記述言語：英語   出版者・発行元：Cancers  

This retrospective multicenter study aimed to analyze the clinical features and prognosis of 24 patients diagnosed with LGMS between 2002 and 2019 in the Japanese sarcoma network. Twenty-two cases were surgically treated and two cases were treated with radical radiotherapy (RT). The pathological margin was R0 in 14 cases, R1 in 7 cases, and R2 in 1 case. The best overall response in the two patients who underwent radical RT was one complete response and one partial response. Local relapse occurred in 20.8% of patients. Local relapse-free survival (LRFS) was 91.3% at 2 years and 75.4% at 5 years. In univariate analysis, tumors of 5 cm or more were significantly more likely to cause local relapse (p < 0.01). In terms of the treatment of relapsed tumors, surgery was performed in two cases and radical RT was performed in three cases. None of the patients experienced a second local relapse. Disease-specific survival was 100% at 5 years. A wide excision aimed at the microscopically R0 margin is considered the standard treatment for LGMS. However, RT may be a viable option in unresectable cases or in cases where surgery is expected to cause significant functional impairment.

DOI： 10.3390/cancers15082314

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Cancer Medicine  

Background: The treatment of choice for desmoid-type fibromatosis (DF) has been changed to active surveillance (AS). However, few studies have reported clinical outcomes of AS modality in Asian countries. This study aimed to clarify the significance of AS as a DF treatment modality. Methods: A total of 168 lesions from 162 patients with extra-abdominal DF were included. The mean age at diagnosis was 39 years (1–88 years), and the median maximum tumor diameter at the first visit was 64.1 mm (13.2–255.8 mm). The clinical outcomes of AS and the risk factors requiring active treatment (AT) (defined as an event) from AS modality were investigated. Results: Of the 168 lesions, 94 (56%) were able to continue AS, with a 5-year event-free survival of 54.8%. Of the 68 lesions with PD, 21 (30.9%) lesions were able to continue AS. Neck location (p = 0.043) and CTNNB1 S45F mutation (p = 0.003) were significantly associated with the transition to AT, and S45F mutation was a significant factor associated with the transition to AT by multivariate analysis (hazard ratio: 1.96, p = 0.048). AT outcomes after AS were evaluable in 65 lesions, and 49 (75%) lesions did not require a transition to a second AT. Conclusions: AS was revealed as an effective treatment modality. The transition to AT needs to be considered for neck location and CTNNB1 S45F mutation DF. Good results can be obtained by selecting a treatment method that considers the tumor location even in cases that require intervention.

DOI： 10.1002/cam4.5329

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：European Journal of Surgical Oncology  

Background: Dedifferentiated liposarcoma occurs predominantly in the retroperitoneum. Given the paucity of cases, information on the clinical characteristics of this entity in the extremities and trunk wall is quite limited. In particular, the significance of preoperative evaluation and principles of intraoperative management of the different components, i.e., well-differentiated and dedifferentiated areas, are still to be defined. Methods: Clinical characteristics, treatment outcomes, and risk factors for poor oncological outcomes in cases of dedifferentiated liposarcoma in the extremity or trunk wall were analyzed by a retrospective, multicentric study. Results: A total of 132 patients were included. The mean duration from the initial presentation to dedifferentiation was 101 months in dedifferentiation-type cases. The 5-year local recurrence-free survival, metastasis-free survival, and disease-specific survival rates were 71.6%, 75.7%, and 84.7%, respectively. Among 32 patients with metastasis, 15 presented with extrapulmonary metastasis. A percentage of dedifferentiated area over 87.5%, marginal/intralesional margin, and R1/2 resection in the dedifferentiated area were independent risk factors for local recurrence. Dedifferentiated areas over 36 cm2, French Federation of Cancer Centers Sarcoma Group grade III, and intralesional or marginal resection were independent risk factors for metastasis. A dedifferentiated area over 77 cm2 and lung metastasis were independent risk factors for disease-specific mortality. Conclusions: The typical clinical characteristics of dedifferentiated liposarcoma in the extremity and trunk wall were reconfirmed in the largest cohort ever. The evaluation of the dedifferentiated area in terms of grade, extension, and pathological margin, together with securing adequate surgical margins, was critical in the management of this entity.

DOI： 10.1016/j.ejso.2022.08.024

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：BMC Cancer  

Background: The high rate of aseptic loosening of cemented stems has led to their frequent use in endoprosthetic reconstruction. However, problems, such as stem breakage and stress shielding at the insertion site, remain. The Japanese Musculoskeletal Oncology Group (JMOG) has developed Kyocera Modular Limb Salvage System (KMLS) cementless stems with a unique tapered press-fit and short fixation design. This study aimed to clarify the short-term postoperative outcomes of this prosthesis and validate the stem design. Methods: One hundred cases of KMLS cementless stems (51 male patients; median age, 49 years; mean follow-up period, 35 months), with a minimum follow-up of 2 years, for the proximal femur (PF), distal femur (DF), and proximal tibia were prospectively registered for use. Prosthesis survival, complication rates, postoperative functional, and radiographical evaluation were analyzed. Complications or failures after insertion of the KMLS endoprostheses were classified into five types and functional results were analyzed according to the MSTS scoring system at postoperative 1 year. The diaphyseal interface and anchorage were graded by the ISOLS system at postoperative 2 years. Results: The overall prosthesis survival rates at 2 and 4 years were 88.2 and 79.6%, respectively. The prosthesis-specific survival rate excluding infection and tumor recurrence was 90.2 and 87.9%, respectively. Younger age (p = 0.045) and primary tumor (p = 0.057) were associated with poor prognosis of prosthesis-specific survival excluding infection and tumor recurrence. Complications were observed in 31 patients, 13 patients underwent revision surgery. The mean MSTS functional score at 1 year postoperatively was 68%. Early implant loosening was significantly more common in the DF (p = 0.006) and PF/DF straight stem (p = 0.038). The ISOLS radiographic evaluation at 2 years after surgery revealed good bone remodeling and anchorage in most cases (bone remodeling: 90% / excellent and good, anchorage: 97% / excellent and good). Conclusions: Tumor endoprosthesis long-term fixation to the diaphysis of the lower extremity remains challenging. The KMLS cementless stem with a unique tapered press fit design showed good short-term results in maintaining bone stock. To prevent early loosening, a curved stem should be used in PF and DF, but long-term follow-up is necessary.

DOI： 10.1186/s12885-022-09873-x

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.3390/jcm11195695

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担当区分：筆頭著者   記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1038/s41598-022-20359-5

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1007/s00428-021-03218-y

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.wneu.2021.09.130

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記述言語：日本語   出版者・発行元：Medicine (United States)  

Rationale:Fibrous dysplasia is a rare disorder that results in fractures, pain, and disability and can affect any bone in the body. The treatment of symptomatic fibrous dysplasia is determined based on the affected bones. Although some lesions are often too extensive for surgical procedures, there are currently no effective or recommended medical treatments available for them.Patient concerns:A 27-year-old woman developed right buttock pain and was diagnosed with a bone tumor in the right ilium. Clinical images revealed an expansive osteolytic lesion with thinning of the cortex and cystic change from the acetabulum to the sacroiliac joint.Diagnosis:An incisional biopsy was performed, and the lesion was diagnosed as cystic fibrous dysplasia. Occasional osteoclast-like giant cells and woven bone were observed. The patient had no evidence of polyostotic lesions or findings of McCune-Albright syndrome. Biochemical blood test results showed no obvious abnormal values, except for an increase in serum tartrate-resistant acid phosphatase 5b to 459 mU/dL.Interventions:Since surgical treatment appeared to be challenging, she was treated with denosumab with decreased dose-intensity schedules.Outcomes:The administration of denosumab caused osteosclerosis within the lesion, resulting in the elimination of bone pain. The patient received denosumab treatment for 18 months. Pain relief and lesion radiodensity were maintained for 9 months after denosumab discontinuation. The serum level of tartrate-resistant acid phosphatase 5b was measured to monitor the response to denosumab, which was suppressed during denosumab treatment.Lessons:We described successful denosumab treatment in a patient with cystic fibrous dysplasia (FD) who maintained efficacy for 9 months after treatment. Although the use of denosumab in fibrous dysplasia is currently off-label, our experience with this patient supports the potential of denosumab therapy for patients for whom surgical treatment is challenging.

DOI： 10.1097/MD.0000000000028138

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担当区分：筆頭著者   記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.knee.2021.09.006

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.injury.2021.07.032

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1038/s41598-021-98775-2

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1038/s41598-021-96795-6

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.7759/cureus.17078

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1186/s13018-021-02590-4

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1038/s41598-021-91345-6

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1038/s41598-021-86730-0

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1111/cas.14802

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.18999/nagjms.83.1.217

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掲載種別：研究論文（学術雑誌）  

CiNii Research

掲載種別：研究論文（学術雑誌）  

CiNii Research

担当区分：筆頭著者   掲載種別：研究論文（学術雑誌）  

CiNii Research

記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1111/cas.14626

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1002/jor.24629

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1038/s41598-020-68641-8

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1093/jjco/hyaa039

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掲載種別：研究論文（学術雑誌）   出版者・発行元：株式会社医学書院  

DOI： 10.11477/mf.1408201651

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.heliyon.2020.e03499

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

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掲載種別：研究論文（学術雑誌）   出版者・発行元：株式会社医学書院  

DOI： 10.11477/mf.1408201410

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：日本語   出版者・発行元：(公社)日本整形外科学会  

記述言語：日本語   出版者・発行元：(公社)日本整形外科学会  

記述言語：日本語   出版者・発行元：(公社)日本整形外科学会  

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Journal of Orthopaedic Research  

Hyaluronan (HA) plays crucial roles in the maintenance of high-quality cartilage extracellular matrix. Several studies have reported the HA in synovial fluid in patients with osteoarthritis (OA), but few have described the changes of HA in articular cartilage of OA or idiopathic osteonecrosis of the femoral head (ONFH). KIAA1199 was recently reported to have strong hyaluronidase activity. The aim of this study was to clarify the HA metabolism in OA and ONFH, particularly the involvement of KIAA1199. Immunohistochemical analysis of KIAA1199 and HA deposition was performed for human OA (n = 10), ONFH (n = 10), and control cartilage (n = 7). The concentration and molecular weight (MW) of HA were determined by competitive HA ELISA and Chromatography, respectively. Regarding HA metabolism-related molecules, HAS1, HAS2, HAS3, HYAL1, HYAL2, and KIAA1199 gene expression was assessed by reverse transcriptase polymerase chain reaction. Histological analysis showed the overexpression of KIAA1199 in OA cartilage, which was accompanied by decreased hyaluronic acid binding protein (HABP) staining compared with ONFH and control. Little KIAA1199 expression was observed in cartilage at the collapsed area of ONFH, which was accompanied by a slight decrease in HABP staining. The messenger RNA (​​​​​mRNA) expression of HAS2 and KIAA1199 was upregulated in OA cartilage, while the mRNA expression of genes related to HA catabolism in ONFH cartilage showed mostly a downward trend. The MW of HA in OA cartilage increased while that in ONFH cartilage decreased. HA metabolism in ONFH is suggested to be generally indolent, and is activated in OA including high expression of KIAA1199. Interestingly, MW of HA in OA cartilage was not reduced.

DOI： 10.1002/jor.25364

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

Anticancer drugs and molecular targeted therapies are used for refractory desmoid-type fibromatosis (DF), but occasionally cause severe side effects. The purpose of this study was to identify an effective drug with fewer side effects against DF by drug repositioning, and evaluate its efficacy. FDA-approved drugs that inhibit the proliferation of DF cells harboring S45F mutations of CTNNB1 were screened. An identified drug was subjected to the investigation of apoptotic effects on DF cells with analysis of Caspase 3/7 activity. Expression of β-catenin was evaluated with western blot analysis, and immunofluorescence staining. Effects of the identified drug on in vivo DF were analyzed using Apc1638N mice. Auranofin was identified as a drug that effectively inhibits the proliferation of DF cells. Auranofin did not affect Caspase 3/7 activity compared to control. The expression level of β-catenin protein was not changed regardless of auranofin concentration. Auranofin effectively inhibited the development of tumorous tissues by both oral and intraperitoneal administration, particularly in male mice. Auranofin, an anti-rheumatic drug, was identified to have repositioning effects on DF. Since auranofin has been used for many years as an FDA-approved drug, it could be a promising drug with fewer side effects for DF.

DOI： 10.1038/s41598-022-15756-9

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記述言語：日本語   出版者・発行元：(公社)日本整形外科学会  

記述言語：日本語   出版者・発行元：(公社)日本整形外科学会  

記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：(公社)日本整形外科学会  

記述言語：日本語   掲載種別：研究論文（学術雑誌）  

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Cancers  

Several types of soft tissue sarcomas have peripheral infiltrative growth characteristics called tail‐like lesions. The efficacy of neoadjuvant therapy for tumors with tail‐like lesions has not been elucidated. From 2012 to 2019, we analyzed 36 patients with soft tissue sarcoma with tail‐like lesions treated with neoadjuvant therapy, including chemotherapy, radiotherapy, or both. The effect of neoadjuvant therapy on the tail sign was investigated by analyzing the change in tail‐like lesions during neoadjuvant therapy and histological responses. The median length of the tail‐like lesion reduced from 29.5 mm at initiation to 19.5 mm after neoadjuvant therapy. The extent of shrinkage in tail‐like lesions was related to the histopathological responses in the main part of the tumor. Complete disappearance of the tail‐like lesion was observed in 12 patients; however, it was not related to achieving a microscopically negative margin. The oncologic outcomes did not significantly differ between cases with and without the complete disappearance of tail‐like lesions. This study indicated that the shrinkage of tail‐like lesions did not have a significant effect on complete resection or improvements of clinical outcomes. A more comprehensive evaluation is needed to elaborate on the surgical strategy.

DOI： 10.3390/cancers13153901

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記述言語：日本語   出版者・発行元：(公社)日本整形外科学会  

記述言語：日本語   掲載種別：研究論文（学術雑誌）  

記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Genes Chromosomes and Cancer  

Dedifferentiated liposarcoma (DDLPS) is a relatively common soft tissue sarcoma that results from the progression of well-differentiated liposarcoma (WDLPS). This study aimed to investigate the progression process and to clarify the pathological and genetic factors related to poor prognosis in DDLPS. In 32 DDLPS cases and five WDLPS cases, genetic factors were analyzed by custom comparative genomic hybridization (CGH) array, which was designed to densely cover gene regions known to be frequently amplified in WD/DDLPS. The analyses comparing primary and metastatic lesions and those comparing histologically different areas in the same tumor revealed intra-tumoral genetic heterogeneity and progression. According to a prognostic analysis comparing the good-prognosis and the poor-prognosis groups, we selected MDM2 and HMGA2 as candidate genes associated with poor and good prognosis, respectively. The ratios of the amplification or gain levels of MDM2 and HMGA2 expressed in log ratios (log[MDM2/HMGA2] = log[MDM2]-log[HMGA2]) were significantly associated with prognosis. An amplification or gain level of MDM2 that was more than twice that of HMGA2 (MDM2/HMGA2 > 2, log[MDM2/HMGA2] > 1) was strongly related to poor OS (P <.001) and poor distant metastasis-free survival (DMFS) (P <.001). In the pathological analysis of 44 cases of DDLPS, histological tumor grade, cellular atypia, and MDM2 immunoreactivity were related to overall survival (OS), while HMGA2 immunoreactivity tended to be associated with OS. Cellular atypia was also associated with DMFS. In conclusion, histological grade and MDM2 expression were determined to be prognostically important, and the MDM2/HMGA2 amplification or gain ratio was found to have significant prognostic value by the custom CGH array analysis.

DOI： 10.1002/gcc.22899

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：World Journal of Surgical Oncology  

Background: Myxoid liposarcoma is well known to have an unusual proclivity for extrapulmonary metastasis. However, cardiac metastasis of myxoid liposarcoma is very rare, even in patients with advanced disease. Case presentation: A 40-year-old man was diagnosed with myxoid liposarcoma of the right thigh and treated with wide resection. Two years after the surgery, a low-density area in the left ventricle was found on follow-up chest computed tomography, and was suspected of being metastatic disease. He underwent surgical treatment, and the lesion was pathologically confirmed as metastasis of myxoid liposarcoma. Fifteen months later, he complained of slight dyspnea and developed metastatic disease in the right atrium. He was treated with surgical excision, followed by radiotherapy. Although there was no recurrence in the heart since the second cardiac metastasectomy, multiple metastases occurred in the abdominal cavity, lungs, and muscles. He finally died of the disease 2 years after the second cardiac metastasectomy. Conclusion: We experienced a case of primary myxoid liposarcoma in the thigh, accompanied by ectopic and metachronous cardiac metastases. Although this condition is rare, we should follow-up patients with myxoid liposarcoma, considering the possibility of cardiac metastasis.

DOI： 10.1186/s12957-020-02009-0

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：International Journal of Cancer  

Bone modifying agents (BMAs) have become a standard treatment to prevent skeletal-related events (SREs) in bone metastases (BMs). The aim of our study is to determine the clinical value of serum bone resorption markers for predicting clinical outcomes after using BMAs in patients with BM. Patients were enrolled between May 2013 and October 2017 at the Nagoya University Hospital, Japan. We prospectively observed changes in pyridinoline cross-linked carboxyterminal telopeptide of type I collagen (ICTP) and tartrate-resistant acid phosphatase 5b (TRACP-5b) during treatment with BMAs. The relationship between serum markers before and after treatment and clinical outcomes such as progression of bone disease (BD), SREs and overall survival (OS) were evaluated. Pearson chi-square test and Kaplan–Meier product limit methods were used for analysis. Sixty-seven patients were analyzed. The primary tumor sites were 21 lung, 16 breast and 30 others. Forty and 27 patients were treated with Denosumab and Zoledronic acid, respectively. Progression of BDs, SREs and death were observed in 10, 16 and 31 cases, respectively. The median follow-up period after using BMAs was 12.3 (range 0.3–66.3) months. ICTP at 3–4 weeks was significantly correlated with increasing BD progression, SREs and death after treatment in both the whole and lung cancer cohorts. Base line ICTP and TRACP-5b were also associated with increasing BD progression in the whole cohort. Our study showed that early posttreatment ICTP is useful for predicting BD progression, SREs and OS after use of BMAs in patients with BM and even in patients with lung cancer BM.

DOI： 10.1002/ijc.32836

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その他リンク： https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ijc.32836

DOI： 10.1186/s40792-020-00865-2

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Journal of Medical Imaging and Radiation Oncology  

Introduction: This study aimed to determine the clinical significance of MRI characteristics as a possible predictor of responsiveness to meloxicam treatment in patients with desmoid-type fibromatosis (DF). Additionally, it analysed the correlation between CTNNB1 mutation status and signal intensity of MRI. Methods: Forty-six patients consecutively treated with meloxicam composed this study. The low-intensity area (LIA) on T2-weighted MRI was determined. We divided patients into two groups based on the efficacy of meloxicam: a clinical benefit group (CB group, including CR: complete response; PR: partial response; and SD: stable disease) and non-clinical benefit group (NB group, including PD: progressive disease). Correlations of the efficacy with LIA and CTNNB1 mutation status with LIA were investigated. Results: In total, 11, 17 and 18 patients showed PR, SD and PD, respectively. The mean LIA ratio before treatment was significantly higher (P < 0.001) in the CB group than in the NB group. For predicting the efficacy, sensitivity was 68%, and specificity was 89% when setting the cut-off value as 20% for LIA. Mean changes in the LIA ratio before and after treatment were significantly higher (P = 0.01) in the CB group than in the NB group. Mean LIA ratio before treatment was significantly lower (P < 0.001) in the S45F mutation group than in the other mutation group. In multivariate analysis, the LIA ratio before treatment was a significant predictor of responsiveness (P = 0.02). Conclusions: MRI characteristics were a useful predictor of the efficacy of meloxicam in DF patients. It may be possible to predict the clinical outcome more accurately when combined with other factors, such as CTNNB1 mutantion status.

DOI： 10.1111/1754-9485.12940

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Clinical and Experimental Metastasis  

The efficacy and safety of eribulin in Japanese patients with advanced soft-tissue sarcomas (STS) have not been evaluated in a large-scale cohort study. Thus, we aimed to investigate the clinical outcome of 82 Japanese patients with STS receiving eribulin across multiple study centers retrospectively. Of 82 STS patients receiving eribulin treatment, 13 were treated for locally unresectable tumor, 46 for metastasis, and 23 for both. The primary endpoint of this study was to evaluate the efficacy of eribulin against STS. The median age was 60 years. Thirty-seven were diagnosed with L-sarcoma (leiomyosarcoma or liposarcoma) and 45 had non-L-sarcoma. The median progression-free survival (PFS) for all patients was 2.7 months, with 3.4 months in those with L-sarcoma and 2.2 months in those with non-L-sarcoma. Patients with L-sarcoma showed a better PFS than those with non-L-sarcoma. Overall, the median survival time was 11.1 months, and 12.3 months and 7.9 months in patients with L-sarcoma and non-L-sarcoma, respectively; however, there was no significant differences between the groups. The prognostic significance of PS = 0 and both existence of local and metastatic STS was evaluated by multivariate analysis. We also evaluated the overall survival (OS) in patients with undifferentiated pleomorphic sarcoma (UPS) and other non-L-sarcomas. Patients with UPS had better OS than those with the other non-L-sarcomas. In conclusion, there was a significant difference in PFS between patients with L-sarcoma and non-L-sarcoma following treatment with eribulin. The anti-tumor potential of eribulin was evident in patients with UPS.

DOI： 10.1007/s10585-019-09980-3

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：The Lancet Oncology  

DOI： 10.1016/S1470-2045(19)30398-5

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記述言語：日本語   出版者・発行元：(公社)日本整形外科学会  

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記述言語：日本語   出版者・発行元：Journal of Surgical Oncology  

Background: Biological reconstruction with recycled heat-treated autografts has been an option for a segmental skeletal defect after intercalary resection for malignant musculoskeletal tumors in the extremity. This study was undertaken to evaluate the clinical outcomes in patients treated with this procedure and identify factors affecting the incidence of complications. Methods: We retrospectively reviewed 24 patients treated with heat-treated autografts after intercalary resection at our institution between 1992 and 2015. Results: The survival rate of the heat-treated autografts was 70.1% at 10 years. Of the 48 host-graft junctions in the 24 patients, nonunion occurred in 18 junctions (38%). In the univariate analysis, location in the upper extremity, intercalary grafts without vascularized fibula autografts (VFG), and junction at the diaphysis significantly increased the rate of nonunion (P = 0.003, P = 0.003, and P = 0.031, respectively). Location in the upper extremity was an independent factor associated with nonunion in the multivariate analysis (P = 0.006). Upper extremity location and intercalary grafts without VFG were also significant factors for bone absorption (P = 0.042 and P < 0.001, respectively). Conclusions: Our results can provide useful information to devise possibly novel clinical approaches to patients requiring intercalary reconstruction of the extremity.

DOI： 10.1002/jso.25028

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記述言語：日本語   出版者・発行元：Journal of Orthopaedic Research  

Hyaluronan (HA) has been shown to play crucial roles in the tumorigenicity of malignant tumors. Chondrosarcoma, particularly when low-grade, is characterized by the formation of an extracellular matrix (ECM) containing abundant HA, and its drug/radiation resistance has become a clinically relevant problem. This study aimed to evaluate the effects of an HA synthesis inhibitor, 4-methylumbelliferone (MU), on ECM formation as well as antitumor effects in chondrosarcoma. We investigated the effects of MU on rat chondrosarcoma (RCS) cells with a grade I histological malignancy in vitro and in vivo grafted model. HA binding protein (HABP) stainability on and around the RCS cells was effectively reduced with treatment of MU. ECM formation was markedly suppressed by MU at a dose of 1.0 mM. Cell proliferation was significantly reduced by MU at 24 h. Cell motility and invasion were suppressed in a dose-dependent manner by MU. No significant changes in mRNA expression of Has1−3 were observed. Furthermore, MU inhibited the growth of grafted tumors in vivo. Histologically, chondrosarcoma cells of control tumors showed a cell-clustering structure. HABP stainability was markedly decreased in the MU-treated group. These results suggest that MU exhibits antitumor effects on low-grade chondrosarcoma, via inhibition of HA accumulation and ECM formation. MU, which is an approved drug in bile therapy, could be a new off-label medication for chondrosarcomas. © 2017 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:1573–1580, 2018.

DOI： 10.1002/jor.23794

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記述言語：日本語   出版者・発行元：Modern Rheumatology  

Objectives: Gliostatin (GLS) has angiogenic and arthritogenic activities and enzymatic activity as thymidine phosphorylase. Aberrant GLS production has been observed in the synovial membranes of patients with rheumatoid arthritis (RA). Matrix metalloproteinases (MMPs) are involved in joint destruction. Promoters of GLS and some MMP genes contain Sp1 binding sites. We examined the inhibitory effect of the Sp1 inhibitor mithramycin on GLS-induced GLS and MMP expression in cultured fibroblast-like synoviocytes (FLSs). Methods: Synovial tissue samples were obtained from patients with RA. FLSs pretreated with mithramycin were cultured with GLS. The mRNA expression levels of GLS and MMP-1, MMP-2, MMP-3, MMP-9, and MMP-13 were determined using reverse transcription polymerase chain reactions. Protein levels were measured using enzyme immunoassay and gelatin zymography. Results: GLS upregulated the expression of GLS itself and of MMP-1, MMP-3, MMP-9, and MMP-13, an effect significantly reduced by treatment with mithramycin. GLS and mithramycin had no effect on MMP-2 expression. Conclusions: Mithramycin downregulated the increased expression of GLS and MMP-1, MMP-3, MMP-9, and MMP-13 in FLSs treated with GLS. Because GLS plays a pathological role in RA, blocking GLS stimulation using an agent such as mithramycin may be a novel approach to antirheumatic therapy.

DOI： 10.1080/14397595.2017.1350332

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：World Journal of Surgical Oncology  

Background: Thyroid metastasis of soft tissue sarcoma is very rare, and the diagnosis is especially difficult when only a single lesion is present. Case presentation: A 50-year-old man was diagnosed with myxoid liposarcoma of the right thigh and treated with wide resection. Two and a half years after the surgery, a growing low-density area was incidentally observed in the right lobe of his thyroid gland on follow-up chest computed tomography. Fine needle aspiration biopsy was performed twice, and the thyroid mass was suspected of being a sarcoma metastasis. He was treated by hemithyroidectomy, and the lesion was pathologically confirmed as a metastasis of myxoid liposarcoma. Conclusion: We experienced single thyroid gland metastasis in patients with myxoid liposarcoma in whom a growing mass is observed in the thyroid gland after radical surgery of the primary site.

DOI： 10.1186/s12957-018-1370-1

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記述言語：日本語   出版者・発行元：British Journal of Surgery  

Background: Little is known about the value of portal vein (PV) resection in distal cholangiocarcinoma. The aim of this study was to evaluate the clinical significance of PV resection in distal cholangiocarcinoma. Methods: Patients who underwent pancreatoduodenectomy (PD) for distal cholangiocarcinoma between 2001 and 2010 at one of 31 hospitals in Japan were reviewed retrospectively with special attention to PV resection. Short- and long-term outcomes were evaluated. Results: In the study interval, 453 consecutive patients with distal cholangiocarcinoma underwent PD, of whom 31 (6·8 per cent) had combined PV resection. The duration of surgery (510 versus 427 min; P = 0·005) and incidence of blood transfusion (48 versus 30·7 per cent; P = 0·042) were greater in patients who had PV resection than in those who did not. Postoperative morbidity and mortality were no different in the two groups. Several indices of tumour progression, including high T classification, lymphatic invasion, perineural invasion, pancreatic invasion and lymph node metastasis, were more common in patients who had PV resection. Consequently, the incidence of R1/2 resection was higher in this group (32 versus 11·8 per cent; P = 0·004). Survival among the 31 patients with PV resection was worse than that for the 422 patients without PV resection (15 versus 42·4 per cent at 5 years; P < 0·001). Multivariable analyses revealed that age, blood loss, histological grade, perineural invasion, pancreatic invasion, lymph node metastasis and surgical margin were independent risk factors for overall survival. PV resection was not an independent risk factor. Conclusion: PV invasion in distal cholangiocarcinoma is associated with locally advanced disease and several negative prognostic factors. Survival for patients who have PV resection is poor even after curative resection.

DOI： 10.1002/bjs.10596

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Diagnostic Pathology  

Background: Immunohistochemical staining with conventional anti-β-catenin antibody has been applied as a diagnostic tool for desmoid-type fibromatosis (DF). This study aimed to evaluate the diagnostic and prognostic value of immunohistochemical staining with anti-non-phospho β-catenin antibody, which might more accurately reflect the aggressiveness of DF, in comparison to the conventional anti-β-catenin antibody. Methods: Between 2003 and 2015, 40 patients with extra-peritoneal sporadic DF were prospectively treated with meloxicam or celecoxib, a COX-2 inhibitor, therapy. The efficacy of this treatment was evaluated according to Response Evaluation Criteria in Solid Tumors (RECIST). Immunohistochemical staining was performed on formalin-fixed material to evaluate the expression of β-catenin and non-phospho β-catenin, and the positivity was grouped as negative, weak, moderate, and strong. DNA was isolated from frozen tissue or formalin-fixed materials, and the CTNNB1 mutation status was determined by direct sequencing. Results: Of the 40 patients receiving COX-2 inhibitor treatment, there was one with complete remission, 12 with partial remission, 7 with stable disease, and 20 with progressive disease. The mutation sites in CTNNB1 were detected in 22 (55%) of the 40 cases: T41A (17 cases), S45F (3 cases), and T41I and S45P (1 each). The positive nuclear expression of non-phospho β-catenin showed a significant correlation with positive CTNNB1 mutation status detected by Sanger method (p = 0.025), and poor outcome in COX-2 inhibitor therapy (p = 0.022). In contrast, nuclear expression of β-catenin did not show a significant correlation with either CTNNB1 mutation status (p = 0.43) or outcome of COX-2 inhibitor therapy (p = 0.38). Conclusions: Nuclear expression of non-phospho β-catenin might more appropriately reflect the biological behavior of DF, and immunohistochemical staining with non-phospho β-catenin could serve as a more useful diagnostic and prognostic tool of COX-2 inhibitor therapy for patients with DF.

DOI： 10.1186/s13000-017-0654-z

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記述言語：日本語   出版者・発行元：Scientific Reports  

The catabolism of hyaluronan in articular cartilage remains unclear. The aims of this study were to investigate the effects of hyaluronidase 2 (Hyal2) knockdown in articular cartilage on the development of osteoarthritis (OA) using genetic manipulated mice. Destabilization of the medial meniscus (DMM) model of Col2a promoter specific conditional Hyal2 knockout (Hyal -/- ) mice was established and examined. Age related and DMM induced alterations of articular cartilage of knee joint were evaluated with modified Mankin score and immunohistochemical staining of MMP-13, ADAMTS-5, KIAA11199, and biotinylated- hyaluronan binding protein staining in addition to histomorphometrical analyses. Effects of Hyal2 suppression were also analyzed using explant culture of an IL-1α induced articular cartilage degradation model. The amount and size of hyaluronan in articular cartilage were higher in Hyal2 -/- mice. Hyal2 -/- mice exhibited aggravated cartilage degradation in age-related and DMM induced mice. MMP-13 and ADAMTS-5 positive chondrocytes were significantly higher in Hyal2 -/- mice. Articular cartilage was more degraded in explant cultures obtained from Hyal2 -/- mice. Knockdown of Hyal2 in articular cartilage induced OA development and progression possibly mediated by an imbalance of HA metabolism. This suggests that Hyal2 knockdown exhibits mucopolysaccharidosis-like OA change in articular cartilage similar to Hyal1 knockdown.

DOI： 10.1038/s41598-017-07376-5

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記述言語：日本語   出版者・発行元：(一社)日本形成外科学会  

記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：PLoS ONE  

A recent study reported that heat stress stimulates osteogenesis in an in vivo rat model using alginate gel and magnetite cationic liposomes. However, for clinical use, the efficacy for promoting osteogenesis needs to be investigated using clinically approved materials, and preferably with animals larger than rats. The aim of this study was to evaluate multiple heat stimuli-triggered osteogenesis in rat tibial defect models using already clinically applicable materials (Resovist® and REGENOS®) and determine the efficacy also in the rabbit. Fifty-eight rats and 10 rabbits were divided into two groups, respectively, with or without hyperthermia treatment at 45C for 15 min. (hyperthermia; 20 rats once a week, 8 rats three times a week, 5 rabbits once a week, control; 30 rats and 5 rabbits). Micro-CT assessment at 4 weeks revealed that a significantly stimulated osteogenesis was observed in the once a week group of both rats and rabbits as compared to the control group (p = 0.018 and 0.036, respectively). In contrast, the three times a week group did not show enhanced osteogenesis. Histological examination and image analysis showed consistent results in which the area of mineralized bone formation in the once a week hyperthermia group was significantly increased compared with that in the control group at four weeks (rat; p = 0.026, rabbit; p = 0.031). Newly formed bone was observed in the grafted materials from the periphery toward the center, and more osteoclasts were found in the once a week group. Heat stress also induced enhanced alkaline phosphatase expression in cultured osteoblastic cells, MC3T3, in vitro (p = 0.03). On the other hand, heat stress had no obvious effects on chondrogenic differentiation using ATDC5 cells. Our study demonstrates that heat-stimuli with clinically applicable novel heating materials can promote significant osteogenesis, and may thus be a promising treatment option for diseases associated with bone defects.

DOI： 10.1371/journal.pone.0181404

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記述言語：日本語   出版者・発行元：British Journal of Surgery  

Background: Few studies have been conducted on patterns of recurrence after resection for distal cholangiocarcinoma (DCC). The aim of this study was to investigate the incidence and pattern of recurrence after resection of DCC, and to evaluate prognostic factors for time to recurrence and recurrence-free survival (RFS). Methods: Patients who underwent pancreatoduodenectomy with curative intent for DCC between 2001 and 2010 at one of 30 hospitals in Japan were reviewed retrospectively, with special attention to recurrence patterns. The Cox proportional hazards model was used for multivariable analysis. Results: In the study interval, 389 patients underwent pancreatoduodenectomy for DCC with R0/M0 status. Recurrence developed in 213 patients (54·8 per cent). The estimated cumulative probability of recurrence was 54·3 per cent at 5 years. An initial locoregional recurrence occurred in 55 patients (14·1 per cent) and initial distant recurrence in 168 (43·2 per cent), most commonly in the liver. Isolated initial locoregional recurrence occurred in 45 patients (11·6 per cent). Independent prognostic factors for time to recurrence and RFS were perineural invasion (P = 0·001 and P = 0·009 respectively), pancreatic invasion (both P < 0·001) and lymph node metastasis (both P < 0·001). RFS worsened as the number of risk factors increased: the 5-year RFS rate was 70·6 per cent for patients without any risk factors, 50·3 per cent for patients with one factor, 31·8 per cent for those with two factors, and 13·4 per cent when three factors were present. Conclusion: More than half of patients with DCC experienced recurrence after R0 resection, usually within 5 years. Perineural invasion, pancreatic invasion and positive nodal involvement are risk factors for recurrence.

DOI： 10.1002/bjs.10452

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記述言語：日本語   出版者・発行元：International Journal of Hematology  

Transfusion is believed to be the main cause of iron overload in Japan. A nationwide survey on post-transfusional iron overload subsequently led to the establishment of guidelines for iron chelation therapy in this country. To date, however, detailed clinical information on the entire iron overload population in Japan has not been fully investigated. In the present study, we obtained and studied detailed clinical information on the iron overload patient population in Japan. Of 1109 iron overload cases, 93.1% were considered to have occurred post-transfusion. There were, however, 76 cases of iron overload of unknown origin, which suggest that many clinicians in Japan may encounter some difficulty in correctly diagnosing and treating iron overload. Further clinical data were obtained for 32 cases of iron overload of unknown origin; median of serum ferritin was 1860.5 ng/mL. As occurs in post-transfusional iron overload, liver dysfunction was found to be as high as 95.7% when serum ferritin levels exceeded 1000 ng/mL in these patients. Gene mutation analysis of the iron metabolism-related genes in 27 cases of iron overload with unknown etiology revealed mutations in the gene coding hemojuvelin, transferrin receptor 2, and ferroportin; this indicates that although rare, hereditary hemochromatosis does occur in Japan.

DOI： 10.1007/s12185-016-2141-9

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：International Journal of Cancer  

Hyaluronan (HA) has been shown to play important roles in the growth, invasion and metastasis of malignant tumors. Our previous study showing that high HA expression in malignant peripheral nerve sheath tumors (MPNST) is predictive of poor patient prognosis, prompted us to speculate that inhibition of HA synthesis in MPNST might suppress the tumorigenicity. The aim of our study was to investigate the antitumor effects of 4-methylumbelliferone (MU), an HA synthesis inhibitor, on human MPNST cells and tissues. The effects of MU on HA accumulation and tumorigenicity in MPNST cells were analyzed in the presence or absence of MU in an in vitro as well as in vivo xenograft model using human MPNST cell lines, sNF96.2 (primary recurrent) and sNF02.2 (metastatic). MU significantly inhibited cell proliferation, migration and invasion in both MPNST cell lines. HA binding protein (HABP) staining, particle exclusion assay and quantification of HA revealed that MU significantly decreased HA accumulation in the cytoplasms and pericellular matrices in both MPNST cell lines. The expression levels of HA synthase2 (HAS2) and HA synthase3 (HAS3) mRNA were downregulated after treatment with MU. MU induced apoptosis of sNF96.2 cells, but not sNF02.2 cells. MU administration significantly inhibited the tumor growth of sNF96.2 cells in the mouse xenograft model. To the best of our knowledge, our study demonstrates for the first time the antitumor effects of MU on human MPNST mediated by inhibition of HA synthesis. Our results suggest that MU may be a promising agent with novel antitumor mechanisms for MPNST.

DOI： 10.1002/ijc.30460

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Clinical and Experimental Metastasis  

The aim of this study is to examine the impact of disease free (DF) status on the prognosis in patients with metastatic non-small round cell soft tissue sarcoma (STS). We retrospectively reviewed 51 metastatic STS patients who were treated in Nagoya University Hospital from 2005 to 2015. The relation between various clinical factors and overall survival (OS) was analyzed. The log rank test and Cox’s proportional hazards test were used to evaluate the differences between groups. p-values of <0.05 were considered to indicate significance. The median follow-up period after first metastasis was 23.5 (1.6–97.1) months. There were 30 males and 21 females with a median age of 62 (15–88) years at first metastasis. The histologic subtypes were 17 undifferentiated pleomorphic sarcoma, 10 liposarcoma, 8 malignant peripheral nerve sheath tumor, and 16 others. Thirty patients had more than 2 metastases, and 15 patients had primary or local recurrent tumors. The metastatic sites were 31 lung only, 8 bone only, and 12 others. Twenty-two patients achieved DF status after surgeries and in one case proton radiotherapy for bone metastasis. DF status was marginally or significantly associated with good prognosis in patients with both pulmonary (p = 0.055) and extrapulmonary metastasis (p = 0.029). On multivariate analysis, DF status (p = 0.010) was an independent good prognostic factors for OS. In metastatic non-small round cell STS, it is an important treatment concept to achieve DF status whenever possible. This concept can apply both to pulmonary and extrapulmonary metastasis.

DOI： 10.1007/s10585-016-9820-z

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Journal of Photochemistry and Photobiology B: Biology  

Impairment of the activities of daily living (ADL) by osteoporosis is an important concern in developed countries with a super-aging population. Vitamin D, which is a crucial molecule in bone metabolism and mainly produced endogenously with ultraviolet (UV) light exposure, is known to be insufficient in the elderly population. We used an UV Light-Emitting Diode (UV-LED) instrument generating a narrow-range wavelength to analyze the efficacy of endogenous vitamin D production. The primary purpose of this study was to examine the effects of UV irradiation at various narrow-range wavelengths using UV-LED on vitamin D supplementation. The second one was to clarify the short-term effects of UV irradiation on bone morphology in mice. Vitamin D-starved C57BL/6 female mice (n = 7 per group) were UV-irradiated (268 nm, 282 nm, 290 nm, 305 nm, and 316 nm) with 1 kJ/m2 twice a week for 4 weeks. UV irradiation using UV-LED had significant effects on increasing serum 25(OH)D levels in all wavelength groups (P < 0.001, all groups) as compared to a control group. Among irradiated groups, wavelength of 316 nm had a less marked effect on 25(OH)D production compared with other wavelengths at 1 week of UV irradiation (P < 0.05). Levels of 1,25(OH)2D were significantly increased after 4 weeks irradiation with UV-B or UV-C irradiation (P < 0.05). mRNA levels of vitamin D 25-hydroxylase were increased with UV-B or UV-C irradiation (268 nm–305 nm), significantly. Micro-CT examination revealed that short-term (4 weeks) UV-irradiation did not induce morphological change of mice in any group. This study provides essential information that narrow-range UV irradiation with LED can increase the endogenous production of vitamin D, and mRNA levels of the responsible enzyme. Although bone morphology was not altered by short-term UV irradiation in this study, an increase of serum vitamin D might improve bone morphology with long-term irradiation.

DOI： 10.1016/j.jphotobiol.2016.09.036

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Oncology Letters  

Desmoid tumors of the extra-abdominal and abdominal wall have been associated with morbidity due to the aggressive nature of the surgery and high recurrence rates. Surgery that does not cause functional impairment is desired for patients with desmoid tumors. In the present study, among patients with desmoid tumors who were prospectively and consecutively treated with identical conservative treatment with meloxicam, a selected patients of patients were treated with less invasive surgery than wide-resection. Out of 60 patients pathologically diagnosed with desmoid tumors, 9 patients with tumors refractory to conservative treatment and 4 patients who refused to receive this type of treatment were treated with planned simple resection. Subsequently, the clinical outcome of the patients and the mutational status of the catenin β-1 (CTNNB1) gene in the tumors were analyzed. The mean age of the 13 patients that underwent planned simple resection was 39 years, and the tumors were located in the abdominal wall in 6 cases, the chest wall in 4 cases and the neck in 3 cases. All excised specimens were evaluated and positive microscopic margins were identified; however, during the mean follow-up period of 30 months, 12/13 cases, 7 of which had T41A mutations and 5 of which had no mutations (wild-type), did not develop recurrence. Only 1 initial case with an S45F mutation in the CTNNB1 gene developed recurrence. The results of the present prospectively treated with simple resection and retrospectively analyzed study suggest that planned simple resection could serve as a therapeutic modality for extraperitoneal desmoid tumors, particularly truncal ones with a wild-type or T41A mutational status.

DOI： 10.3892/ol.2016.4792

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Cancer Medicine  

Desmoid tumors are benign mesenchymal neoplasms with a locally aggressive nature. The mutational status of β-catenin gene (CTNNB1) is presumed to affect the tumorous activity of the cells. In this study, we isolated three kinds of desmoid cell with different CTNNB1 status, and compared their characteristics. Cells were isolated from three patients with abdominal wall desmoid during surgery, all of which were resistant to meloxicam treatment. The mutational status of the CTNNB1 exon 3 was determined for both parental tumor tissues and isolated cultured cells. β-catenin expression was determined with immunohistochemistry. Responsiveness to meloxicam was investigated with MTS assay together with COX-2 immunostaining. mRNA expressions of downstream molecules of Wnt/β-catenin pathway were determined with real-time RT-PCR. Three kinds of cell isolated from desmoid tumors harboring different CTNNB1 mutation status (wild type, T41A, and S45F), all exhibited a spindle shape. These isolated cells could be cultured until the 20th passage with unchanged proliferative activity. Nuclear accumulation of β-catenin was observed in all cultured cells, particularly in those with S45F. Proliferating activity was significantly suppressed by meloxicam (25 μmol/L, P < 0.007) in all three cell cultures, of which parental desmoid was resistant to meloxicam clinically. The mRNA expressions of Axin2, c-Myc, and Cyclin D1 differently increased in the three cultured cell types as compared with those in human skin fibroblast cells (HDF). Inhibitors of Wnt/β-catenin pathway downregulated Axin2, c-Myc, and Cyclin D1 significantly. Isolated and cultured desmoid tumor cells harboring any one of the CTNNB1 mutation status had unique characteristics, and could be useful to investigate desmoid tumors with different mutation status of CTNNB1.

DOI： 10.1002/cam4.582

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記述言語：日本語   出版者・発行元：International Journal of Clinical Oncology  

Background: This study was conducted to determine the efficacy and safety of low-dose chemotherapy with methotrexate (MTX) and vinblastine (VBL) for patients with desmoid tumors refractory to meloxicam treatment, focusing in particular on the relationship between the efficacy of this chemotherapy and catenin β-1 (CTNNB1) mutation status. Patients and methods: Since March 2003, patients pathologically diagnosed with extraperitoneal desmoid tumors have been prospectively treated with meloxicam, a COX-2 inhibitor, at our institution. Patients with inoperable tumors who were resistant to meloxicam treatment underwent MTX and VBL therapy every other week. The responses of all patients were evaluated, and factors that were correlated with efficacy were analyzed, including CTNNB1 mutation status. Results: Sixty-eight patients were prospectively treated with meloxicam. MTX + VBL therapy was administered in 15 patients. Six patients showed a partial response. Only one patient presented disease progression. A few patients showed grade 3–4 treatment-related toxicity with the administration of MTX and VBL every other week. Intriguingly, CTNNB1 status did not affect the efficacy of this treatment. Conclusion: MTX and VBL treatment every other week is well tolerated and achieved a favorable response in patients resistant to meloxicam treatment, regardless of CTNNB1 mutation status.

DOI： 10.1007/s10147-015-0829-0

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記述言語：日本語   出版者・発行元：Tumor Biology  

Pigmented villonodular synovitis (PVNS) is a benign, translocation-derived neoplasm. Because of its high local recurrence rate after surgery and occurrence of osteochondral destruction, a novel therapeutic target is required. The present study aimed to evaluate the significance of protein expression possibly associated with the pathogenesis during the clinical course of PVNS. In 40 cases of PVNS, positivity of colony-stimulated factor 1 (CSF1), its receptor (CSF1R), and receptor activator of nuclear factor kappa-B ligand (RANKL) were immunohistochemically determined. The relationship between the positivity and clinical outcomes was investigated. High positivity of CSF1 staining intensity was associated with an increased incidence of osteochondral lesions (bone erosion and osteoarthritis) (p = 0.009), but not with the rate of local recurrence. Positivity of CSF1R and RANKL staining was not associated with any clinical variables. The number of giant cells was not correlated with positivity of any of the three proteins, or with the clinical outcome. Focusing on knee cases, CSF1 positivity was also associated with the incidence of osteochondal change (p = 0.02). CSF1R positivity was high in cases which had local recurrence, but not significantly so (p = 0.129). Determination of CSF1 and CSF1R expression may be useful as a prognosticator of the clinical course and/or outcomes of PVNS.

DOI： 10.1007/s13277-015-3197-5

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：日本語   出版者・発行元：Journal of Biological Chemistry  

The highly pathogenic avian influenza (AI) virus, H5N1, is a serious threat to public health worldwide. Both the currently circulating H5N1 and previously circulating AI viruses recognize avian-type receptors; however, only the H5N1 is highly infectious and virulent in humans. The mechanism(s) underlying this difference in infectivity remains unclear. The aim of this study was to clarify the mechanisms responsible for the difference in infectivity between the current and previously circulating strains. Primary human small airway epithelial cells (SAECs) were transformed with the SV40 large T-antigen to establish a series of clones (SAEC-Ts). These clones were then used to test the infectivity of AI strains. Human SAEC-Ts could be broadly categorized into two different types based on their susceptibility (high or low) to the viruses. SAEC-T clones were poorly susceptible to previously circulating AI but were completely susceptible to the currently circulating H5N1. The hemagglutinin (HA) of the current H5N1 virus showed greater membrane fusion activity at higher pH levels than that of previous AI viruses, resulting in broader cell tropism. Moreover, the endosomal pH was lower in high susceptibility SAEC-T clones than that in low susceptibility SAEC-T clones. Taken together, the results of this study suggest that the infectivity of AI viruses, including H5N1, depends upon a delicate balance between the acid sensitivity of the viral HA and the pH within the endosomes of the target cell. Thus, one of the mechanisms underlying H5N1 pathogenesis in humans relies on its ability to fuse efficiently with the endosomes in human airway epithelial cells.

DOI： 10.1074/jbc.M114.611327

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記述言語：日本語   出版者・発行元：日本レックリングハウゼン病学会  

記述言語：日本語   出版者・発行元：Clinical and Experimental Metastasis  

Brain metastases (BMs) from soft tissue sarcoma (STS) are rare but lethal. We reviewed 187 consecutive patients with STS treated with definitive surgery in Nagoya University Hospital from 2004 to 2014. There were 10 patients with neurofibromatosis-1 (NF-1). We investigated estimated brain metastasis free survival (BMFS) after surgery and overall survival (OS) after BMs in STS. The factors that affected BMFS were also investigated. Eight of 187 patients (4.3 %) developed BM with a median period of 18.2 (range 8.8–42.6) months after surgery. Seven of 8 BM patients had metastases at other sites. Estimated 5 year BMFS rate after surgery was 95.2 %, and 3 month OS rate after BM was 25.0 %. NF-1 (p < 0.0001), histological subtype of MPNST (p = 0.008), and primary tumor size ≥5 cm (p = 0.021) were significantly associated with increasing incidence of BM. In this study, postoperative BMs were common in patients with NF-1, MPNST, and large tumors. Considering the impact of NF-1 on BMFS, careful follow up for BM is necessary for NF-1 patients with metastases at other sites.

DOI： 10.1007/s10585-015-9713-6

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PubMed

記述言語：日本語   出版者・発行元：British Journal of Surgery  

Background: The aim of the study was to investigate the prognostic impact of lymph node metastasis in cholangiocarcinoma using three different classifications. Methods: Patients who underwent pancreaticoduodenectomy for distal cholangiocarcinoma in 24 hospitals in Japan between 2001 and 2010 were included. Survival was calculated by means of the Kaplan-Meier method and differences between subgroups were assessed with the log rank test. The Cox proportional hazards model was used to identify independent predictors of survival. χ2 scores were calculated to determine the cut-off value of the number of involved nodes, lymph node ratio (LNR) and total lymph node count (TLNC) for discriminating survival. Results: Some 370 patients were included. The median (range) TLNC was 19 (3-59). Nodal metastasis occurred in 157 patients (42.4 per cent); the median (range) number of involved nodes and LNR were 2 (1-19) and 0-11 (0.02-0.80) respectively. Four or more involved nodes was associated with a significantly shorter median survival (1.3 versus 2.2years; P = 0.001), as was a LNR of at least 0.17 (1.4 versus 2.3years; P = 0.002). Involvement of nodes along the common hepatic artery, present in 21 patients (13.4 per cent), was also associated with a shorter survival (median 1.3 versus 2.1years; P = 0.046). Multivariable analysis among 157 node-positive patients identified the number of involved nodes as an independent prognostic factor (risk ratio 1.87; P = 0.002). Conclusion: The number of involved nodes was a strong predictor of survival in patients with distal cholangiocarcinoma.

DOI： 10.1002/bjs.9752

Scopus

記述言語：英語   出版者・発行元：International Journal of Hyperthermia  

Several studies have reported that heat stress stimulates the activity of osteoblastic cells in vitro. However, few have addressed the effects of heat stress on osteogenesis in vivo, nor have the optimal temperatures for bone formation been determined. The aim of the present study was to investigate the effects of hyperthermia treatment on osteogenesis in a rat tibial defect model. Forty-four Sprague Dawley rats were divided into two groups with or without hyperthermia treatment. A 3-mm circular defect in the proximal tibia filled with magnetite cationic liposomes embedded in alginate beads was subjected to hyperthermia treatment (4346°C). Radiological assessment at 2 weeks after the treatment showed that significantly stimulated osteogenesis was observed in the hyperthermia group as compared to the control group (p0.003). Histomorphometrical analysis at 2 weeks revealed a significant increase of newly formed bone in the hyperthermia group, compared with the control group (p<0.001). Area of newly formed bone in each hyperthermia group was significantly increased as compared with the control group (43°C; p0.005, 44°C; p0.019, 45°C; p0.003, and 46°C; p0.003, respectively). Alkaline phosphatase was overexpressed at the surfaces of newly formed bone adjacent to magnetite cationic liposome implantation. Our results demonstrate for the first time that heat stimulus accelerates osteogenesis in vivo, and may thus be of interest as a novel and promising tool to induce osteogenesis clinically as well.

DOI： 10.3109/02656736.2014.988662

Web of Science

Scopus

PubMed

J-GLOBAL

記述言語：日本語   掲載種別：記事・総説・解説・論説等（学術雑誌）  

記述言語：日本語   掲載種別：記事・総説・解説・論説等（学術雑誌）  

記述言語：日本語   出版者・発行元：(公社)日本整形外科学会  

記述言語：日本語   出版者・発行元：(公社)日本整形外科学会  

記述言語：日本語   出版者・発行元：(公社)日本整形外科学会  

記述言語：日本語   出版者・発行元：(公社)日本整形外科学会  

記述言語：日本語   出版者・発行元：(公社)日本整形外科学会  

記述言語：日本語   出版者・発行元：(公社)日本整形外科学会  

記述言語：日本語   出版者・発行元：(公社)日本整形外科学会  

記述言語：日本語   出版者・発行元：(公社)日本整形外科学会  

記述言語：日本語   出版者・発行元：(公社)日本整形外科学会  

記述言語：日本語   出版者・発行元：(公社)日本整形外科学会  

記述言語：日本語   掲載種別：速報，短報，研究ノート等（学術雑誌）   出版者・発行元：日本レックリングハウゼン病学会  

その他リンク： http://search.jamas.or.jp/link/ui/2016271263

記述言語：英語   掲載種別：速報，短報，研究ノート等（学術雑誌）  

DOI： 10.1007/s10147-015-0829-0.

記述言語：英語   掲載種別：速報，短報，研究ノート等（学術雑誌）  

DOI： 10.1007/s13277-015-3197-5.

記述言語：英語   掲載種別：研究発表ペーパー・要旨（国際会議）   出版者・発行元：AMER SOC CLINICAL ONCOLOGY  

Web of Science

記述言語：日本語   掲載種別：速報，短報，研究ノート等（学術雑誌）   出版者・発行元：日本レックリングハウゼン病学会  

その他リンク： http://search.jamas.or.jp/link/ui/2015264855

記述言語：英語   掲載種別：速報，短報，研究ノート等（学術雑誌）  

DOI： 10.1007/s10585-015-9713-6.

記述言語：英語   掲載種別：速報，短報，研究ノート等（学術雑誌）  

開催年月日： 2022年4月

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：名古屋  

開催年月日： 2022年2月

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：オンライン  

開催年月日： 2021年7月

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：広島   国名：日本国  

開催年月日： 2021年7月

記述言語：日本語   会議種別：シンポジウム・ワークショップ パネル（公募）  

開催地：広島  

開催年月日： 2021年5月

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：オンライン   国名：日本国  

開催年月日： 2021年5月

記述言語：日本語   会議種別：ポスター発表  

開催地：オンライン   国名：日本国  

開催年月日： 2021年4月

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：オンライン  

開催年月日： 2021年2月

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：オンライン  

開催年月日： 2020年10月

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：オンライン   国名：日本国  

開催年月日： 2020年9月

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：オンライン   国名：日本国  

開催年月日： 2020年2月

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：東京   国名：日本国  

開催年月日： 2019年11月

記述言語：英語   会議種別：ポスター発表  

開催地：Tokyo   国名：日本国  

開催年月日： 2019年10月

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：横浜   国名：日本国  

開催年月日： 2019年7月

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：川越   国名：日本国  

開催年月日： 2019年5月

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：横浜   国名：日本国