Faculty Profiles - YATSUYA Hiroshi

Papers - YATSUYA Hiroshi

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Self-Reported Eczema in Relation with Mortality from Cardiovascular Disease in Japanese: the Japan Collaborative Cohort Study Reviewed

Nishida Yoko, Kubota Yasuhiko, Iso Hiroyasu, Tamakoshi Akiko, Tamakoshi Akiko, Mori Mitsuru, Kaneko Yoshihiro, Tsuji Ichiro, Nakamura Yosikazu, Iso Hiroyasu, Yamagishi Kazumasa, Mikami Haruo, Kurosawa Michiko, Hoshiyama Yoshiharu, Tanabe Naohito, Tamakoshi Koji, Wakai Kenji, Ando Masahiko, Suzuki Koji, Hashimoto Shuji, Yatsuya Hiroshi, Kikuchi Shogo, Wada Yasuhiko, Kawamura Takashi, Watanabe Yoshiyuki, Ozasa Kotaro, Mikami Kazuya, Date Chigusa, Sakata Kiyomi, Kurozawa Yoichi, Fujino Yoshihisa, Shibata Akira

JOURNAL OF ATHEROSCLEROSIS AND THROMBOSIS Vol. 26 ( 9 ) page： 775 - 782 2019

Smoking results in accumulation of ectopic fat in the liver. Reviewed

Smoking results in accumulation of, ectopic fat in, the, liver, Kato A, Li Y, Ota A, Naito H, Yamada H, Nihashi T, Hotta Y, Chiang C, Hirakawa Y, Aoyama A, Tamakoshi K, Yatsuya H

Diabetes Metab Syndr Obes Vol. 9 ( 12 ) page： 1075 - 1080 2019

MULTICENTER FEASIBILITY STUDY OF BOWEL PREPARATION WITH CASTOR OIL FOR COLON CAPSULE ENDOSCOPY Reviewed International journal

OHMIYA Naoki, HOTTA Naoki, MITSUFUJI Shoji, NAKAMURA Masanao, OMORI Takafumi, MAEDA Kohei, OKUDA Kotaro, YATSUYA Hiroshi, TAJIRI Hisao

GASTROENTEROLOGICAL ENDOSCOPY Vol. 61 ( 12 ) page： 2646 - 2655 2019

Language：English Publishing type：Research paper (scientific journal) Publisher：Japan Gastroenterological Endoscopy Society

Background and Aim: Extensive use of laxatives and incomplete excretion rates are problematic for colon capsule endoscopy (CCE). The aim of the present study was to determine the effectiveness of castor oil as a booster.Methods: At four Japanese hospitals, 319 examinees undergoing CCE were enrolled retrospectively. Before and after the introduction of castor oil, other preparation reagents were unchanged.Results: Of 319 examinees who underwent CCE, 152 and 167 examinees took regimens with castor oil (between November 2013 and June 2016) and without castor oil (between October 2015 and September 2017), respectively. Capsule excretion rates within its battery life in the groups with and without castor oil were 97% and 81%, respectively (P＜0.0001). Multivariate analysis showed that ages younger than 65 years (adjusted odds ratio [OR], 3.00; P=0.0048), male gender (adjusted OR, 3.20; P=0.0051), and use of castor oil (adjusted OR, 6.29; P=0.0003) were predictors of capsule excretion within its battery life. Small bowel transit time was shorter and total volume of lavage and fluid intake was lower with castor oil than without (P = 0.0154 and 0.0013, respectively). Overall adequate cleansing level ratios with and without castor oil were 74% and 83%, respectively (P = 0.0713). Per-examinee sensitivity for polyps ≥6 mm with and without castor oil was 83% and 85%, respectively, with specificities of 80% and 78%, respectively.Conclusion: Bowel preparation with castor oil was effective for improving capsule excretion rate and reducing liquid loading.

DOI： 10.11280/gee.61.2646

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Perception and practice of 'healthy' diet in relation to noncommunicable diseases among the urban and rural people in northern Ethiopia: a community-based qualitative study Reviewed International coauthorship

Gebremariam Lemlem Weldegerima, Aoyama Atsuko, Kahsay Alemayehu Bayray, Hirakawa Yoshihisa, Chiang Chifa, Yatsuya Hiroshi, Matsuyama Akiko

NAGOYA JOURNAL OF MEDICAL SCIENCE Vol. 80 ( 4 ) page： 451 - 464 2018.11

Language：English Publishing type：Research paper (scientific journal)

Dietary habits are related to the risks of noncommunicable diseases (NCDs), such as cardiovascular disease and diabetes, of which burdens are increasing in low-income countries including Ethiopia. Although several epidemiological studies of NCD risk factors were conducted in Ethiopia, qualitative studies on people's dietary habit in relation to NCDs have not been conducted yet. This study aims to describe people's perception and practice of 'healthy' diet, and barriers to practice 'healthy' diet, paying attention to the dynamics between the perception and practice. We conducted 16 key informant interviews and eight focus group discussions in an urban and a rural areas in northern Ethiopia between November 2014 and January 2016. Audio-records in local language were transcribed word-for-word, and translated into English. English text data were analyzed qualitatively, through constant comparative analysis following the principles of the grounded theory. Three themes have emerged: (1) dietary habit perceived as 'good' or 'bad' for health; (2) reasons for continuing current 'unhealthy' dietary habit; and (3) current dietary habit perceived as 'traditional.' People's practice was mostly consistent with their perception, while they sometimes practiced contrary to the perception because of personal preference and physical or financial obstacles. People were often indifferent of health implications of their habitual dietary practice, such as drinking a lot of sweet coffee. We showed dynamics between perception and practice of 'healthy' diet among people in northern Ethiopia. It is needed to increase awareness of NCDs both among the urban and rural people and to improve the social environment for removing the obstacles.

DOI： 10.18999/nagjms.80.4.451

Perceptions and behavior related to noncommunicable diseases among slum dwellers in a rapidly urbanizing city, Dhaka, Bangladesh: a qualitative study Reviewed International coauthorship

Al-Shoaibi Abubakr Ahmed Abdullah, Matsuyama Akiko, Khalequzzaman Md, Haseen Fariha, Choudhury Sohel Reza, Hoque Bilqis Amin, Chiang Chifa, Hirakawa Yoshihisa, Yatsuya Hiroshi, Aoyama Atsuko

NAGOYA JOURNAL OF MEDICAL SCIENCE Vol. 80 ( 4 ) page： 559 - 569 2018.11

Language：English Publishing type：Research paper (scientific journal)

The increasing burden of noncommunicable diseases (NCDs) in Bangladesh can be attributable to rapid urbanization and coinciding changes in lifestyle accompanied by nutrition transition. The objective of this study is to explore respondents' lived experiences and perceptions relating to NCDs and nutrition change in an urban slum community in Dhaka. Qualitative methods were employed to explore a general understanding of behavior related to NCDs among residents of the slum community. We conducted key informant interviews of six men and seven women of various backgrounds and five focus group discussions to focus salient topics emerged from the interviews. The transcriptions of the audio-recordings were thematically analyzed, using the constant comparison method. Four major themes emerged: (1) financial hardship influencing health; (2) urbanized lifestyle affecting diet; (3) tobacco and sweetened tea as cornerstones of social life; and (4) health-seeking behavior utilizing local resources. One notable finding was that even with general economic improvement, respondents perceived poverty to be one of the major causes of NCDs. A promising finding for potentially curbing NCDs was the current trend for women to walk for exercise contrary to the commonly held notion that urban dwellers generally lead sedentary lifestyles. This study described how urban slum dwellers in Dhaka, experiencing a transition from a traditional to urbanized lifestyle, perceived their daily practices in relation to NCDs and nutrition. Our research revealed both adverse and encouraging elements of perceptions and behavior related to NCDs, which may contribute to the optimal design of NCD prevention and health promotion programs.

DOI： 10.18999/nagjms.80.4.559

Clinical course of human herpesvirus 6 infection in pediatric living donor liver transplantation. Reviewed International journal

Yasui T, Suzuki T, Yoshikawa T, Yatsuya H, Kawamura Y, Miura H, Hara F, Watanabe S, Uga N, Naoe A

Pediatric transplantation Vol. 22 ( 7 ) page： e13239 2018.11

Language：English Publishing type：Research paper (scientific journal)

Differentiation between active and latent viral infection is critical for analysis of HHV-6-associated disease. HHV-6 infection has been associated with several clinical manifestations; however, the precise role of HHV-6 in pediatric LDLT remains unclear. This retrospective cohort study included 33 pediatric patients who received LDLT. All of the recipients were monitored for HHV-6 infection using viral isolation and real-time PCR. HHV-6 infection was observed in 14 of 33 (42.4%) recipients, and HHV-6B infection occurred within 2 weeks after LDLT in 10 of 14 (71.4%) recipients. HHV-6 was isolated from 10 of 33 (30.3%) recipients. Multivariate analysis showed that independent predictors of HHV-6B infection were age (OR 0.975; 95% CI 0.943-0.999; P = .041), PELD (OR 1.091; P = .038), and biliary atresia (OR 16.48; P = .035). The occurrence of unexplained fever was significantly higher in recipients with HHV-6B infection (11/14) compared with uninfected recipients (6/19) (P = .013). Additionally, ALT levels at 8 and 9 weeks after transplantation were significantly higher in the recipients with HHV-6B infection. Younger age, high MELD/PELD score, and biliary atresia as an underlying disease were identified as risk factors for viral infection.

DOI： 10.1111/petr.13239

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HYPERTENSION DETECTION, TREATMENT AND CONTROL RATES IN URBAN SLUM POPULATION IN BANGLADESH Reviewed International coauthorship

Choudhury Sohel, Al-Shoaibi Abubakr Ahmed Abdullah, Khalequzzaman Mohammad, Al Mamun Mohammad Abdullah, Chiang Chifa, Yatsuya Hiroshi, Aoyama Atsuko

JOURNAL OF HYPERTENSION Vol. 36 page： E337 - E338 2018.10

Dietary magnesium intake and risk of incident coronary heart disease in men: A prospective cohort study. Reviewed International journal

Kokubo Y, Saito I, Iso H, Yamagishi K, Yatsuya H, Ishihara J, Maruyama K, Inoue M, Sawada N, Tsugane S, JPHC Study Group

Clinical nutrition (Edinburgh, Scotland) Vol. 37 ( 5 ) page： 1602 - 1608 2018.10

Language：English Publishing type：Research paper (scientific journal)

BACKGROUND & AIMS: The associations between dietary magnesium intake and stroke and coronary heart disease (CHD) incidences are inconsistent and not established in Asian. We aimed to determine the association between dietary magnesium intake and the risk of stroke and CHD in a Japanese population. SUBJECTS/METHODS: We studied 85,293 Japanese subjects by questionnaire at baseline (age 45-74 years, without cardiovascular disease or cancer in 1995 and 1998 for Cohorts I and II, respectively). The participants were followed until the end of 2009 and 2010 in Cohorts I and II, respectively. Dietary magnesium intake was estimated from a self-administered 138-item food-frequency questionnaire. RESULTS: After 1,305,738 person-years of follow-up, 4110 strokes and 1283 cases of CHD were documented. The multivariable-adjusted hazard ratios (HRs, 95% confidence intervals, 95%CIs) of CHD for the fourth and fifth quintiles of dietary magnesium intake were 0.70 (0.50-0.99) and 0.66 (0.44-0.97) in men (P for trend = 0.036), respectively, and third quintile of dietary magnesium intake was 0.61 (0.39-0.96) in women (P for trend = 0.241), compared with the lowest quintile in men and women. We observed no decreased risks of incident stroke in men or women with higher dietary magnesium intakes. CONCLUSIONS: Higher dietary magnesium intake was associated with a reduced risk of CHD in Japanese men.

DOI： 10.1016/j.clnu.2017.08.006

γGTPとALT追加による10年間の2型糖尿病発症リスク予測能の改善愛知職域コホート Reviewed

金子佳世, 八谷寛, 李媛英, 上村真由, 江啓発, 平川仁尚, 太田充彦, 玉腰浩司, 豊嶋英明, 青山温子

日本公衆衛生学会総会抄録集 Vol. 77回 page： 204 - 204 2018.10

食品摂取の多様性と尿中Na,K排泄量、血圧との関連 NIPPON DATA2010

大塚礼, 八谷寛, 西信雄, 奥田奈賀子, 門田文, 由田克士, 大久保孝義, 岡村智教, 上島弘嗣, 岡山明, 三浦克之

日本公衆衛生学会総会抄録集 Vol. 77回 page： 322 - 322 2018.10

The association between objective measures of residence and worksite neighborhood environment, and self-reported leisure-time physical activities: The Aichi Workers' Cohort Study. Reviewed International journal

Yuanying Li, Hiroshi Yatsuya, Tomoya Hanibuchi, Yoshihisa Hirakawa, Atsuhiko Ota, Mayu Uemura, Chifa Chiang, Rei Otsuka, Chiyoe Murata, Koji Tamakoshi, Hideaki Toyoshima, Atsuko Aoyama

Preventive medicine reports Vol. 11 page： 282 - 289 2018.9

Language：English Publishing type：Research paper (scientific journal)

The possible effects of a neighborhood's built environment on physical activity have not been studied in Asian countries as much as in Western countries. The present study cross-sectionally examined the relationship between geographic information system (GIS) measured residence and worksite neighborhood walkability, and the number of parks/green spaces and sports facilities within a 1 km radius of home and workplace, with self-reported leisure-time habitual (3-4 times per week or more) walking and moderate-to-vigorous intensity habitual exercise among local government workers aged 18 to 64 years living in an urban-suburban area of Aichi, Japan in 2013. A single-level binomial regression model was used to estimate the multivariable odds ratios (ORs) and 95% confidence intervals (95% CIs). Of the 1959 male and 884 female participants, 288 (15%) and 141 (16%) reported habitual walking, respectively, and 18% and 17% reported habitual exercise, respectively. Compared with women who resided in neighborhood with a walkability index of 4-30, those living in an area with that of 35-40 were significantly more likely to engage in leisure-time habitual exercise (multivariable OR: 1.70, 95% CI: 1.08-2.68). Marginally significant positive associations were found between leisure-time habitual exercise and the residential neighborhood's number of parks/green spaces among women, as well as the number of sports facilities among men. In conclusion, a residential neighborhood environment characterized by higher walkability may contribute to the initiation or maintenance of moderate-to-vigorous intensity leisure-time exercise among working women living in an urban-suburban area of Japan.

DOI： 10.1016/j.pmedr.2018.07.007

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Pooled analysis of the associations between body mass index, total cholesterol, and liver cancer-related mortality in Japan Reviewed

Ukawa S, Tamakoshi A, Murakami Y, Kiyohara Y, Yamada M, Nagai M, Satoh A, Miura K, Ueshima H, Okamura T, Imai Y, Ohkubo T, Irie F, Iso H, Kitamura A, Ninomiya T, Nakagawa H, Nakayama T, Okayama A, Sairenchi T, Saitoh S, Sakata K, Tsuji I, Kiyama M, Miyamoto Y, Ishikawa S, Yatsuya H

Asian Pacific Journal of Cancer Prevention Vol. 19 ( 8 ) page： 2089 - 2095 2018.8

Language：English Publisher：Asian Pacific Journal of Cancer Prevention

© 2018 Asian Pacific Organization for Cancer Prevention. Objective: We employed a large-scale pooled analysis to investigate the association of liver cancer-related mortality with being overweight/obese and total cholesterol (TC) levels, since limited and inconsistent data on these associations exist in Japan. Methods: A total of 59,332 participants (23,853 men and 35,479 women) from 12 cohorts without a history of cancer who were followed for a median of 14.3 years were analyzed. A sex-specific stratified Cox proportional hazards model adjusted for age and other potential confounders was used to calculate hazard ratios (HRs) and 95% confidence intervals (CI) for liver cancer-related mortality. Results: A total of 447 participants (266 men and 181 women) died of liver cancer within the follow-up period. Individuals classified as having a high BMI (≥25.0 kg/m2) and low TC levels (< 160 mg/dL) had a significantly increased risk for liver cancer-related mortality (HR 7.05, 95% CI 4.41-11.26 in men; HR 8.07, 95% CI 4.76-13.67 in women) when compared with those in the intermediate BMI (18.5-24.9 kg/m2) and TC (160-219 mg/dL) categories. These associations remained after limiting the

DOI： 10.22034/APJCP.2018.19.8.2089

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Late-phase human herpesvirus 6B reactivation in hematopoietic stem cell transplant recipients. Reviewed International journal

Hiroki Miura, Yoshiki Kawamura, Fumihiko Hattori, Makito Tanaka, Kazuko Kudo, Masaru Ihira, Hiroshi Yatsuya, Yoshiyuki Takahashi, Seiji Kojima, Tetsushi Yoshikawa

Transplant infectious disease : an official journal of the Transplantation Society Vol. 20 ( 4 ) page： e12916 2018.8

Language：English Publishing type：Research paper (scientific journal)

BACKGROUND: We sought to determine whether late-phase human herpesvirus 6B (HHV-6B) infection in hematopoietic stem cell transplant (HSCT) recipients was associated with serious outcomes and mortality. METHODS: The occurrence and course of HHV-6B infection was monitored for at least 60 days after transplant using virus isolation and real-time polymerase chain reaction. Risk factors for late-phase HHV-6B infection were examined, and the propensity score was calculated with significant risk factors. The inverse probability-weighted multivariable logistic regression analysis was performed to estimate odds ratios (ORs) and the 95% confidence intervals (95% CI) for mortality. RESULTS: Late-phase HHV-6B infection was observed in 12/89 (13.5%) of the HSCT recipients. Older age (OR: 10.3, 95% CI: 2.1/72.9, P = .0027), hematologic malignancy (OR: 10.3, 95% CI: 1.8/97.1, P = .0063), unrelated donor transplantation (OR: 5.3, 95% CI: 1.1/36.0, P = .0345), and sex-mismatched donor transplantation (OR: 6.3, 95% CI: 1.4/39.5, P = .0149) were identified as risk factors for late-phase HHV-6B infection. Fifteen subjects died (17%). Inverse probability-weighted multivariable logistic model analysis revealed that late-phase HHV-6B infection was an independent risk factor for mortality (OR: 4.2, 95% CI: 1.7/11.0, P = .0012). Among 5 of the fatal cases of late-phase HHV-6B infection, viral infection might be associated with severe clinical manifestations. CONCLUSION: Late-phase HHV-6B infection in HSCT recipients was associated with worse outcomes. The full spectrum of clinical features of the infection has not been fully elucidated, and therefore, recipients with high-risk factors for late-phase HHV-6B infection should be carefully monitored.

DOI： 10.1111/tid.12916

Cardiovascular disease mortality in relation to physical activity during adolescence and adulthood in Japan: Does school-based sport club participation matter? Reviewed International coauthorship International journal

Krisztina Gero, Hiroyasu Iso, Akihiko Kitamura, Kazumasa Yamagishi, Hiroshi Yatsuya, Akiko Tamakoshi

Preventive Medicine Vol. 113 page： 102 - 108 2018.8

Language：English Publishing type：Research paper (scientific journal) Publisher：Academic Press Inc.

We examined potential associations of sport club participation during adolescence and sports-related physical activity during adulthood with mortality from cardiovascular diseases (CVD) in a Japanese population. Between 1988 and 1990, 29,526 men and 41,043 women aged 40–79 years responded to a questionnaire including questions about the frequency of sports participation at baseline and sport club participation during junior/senior high school. Subjects were followed-up until the end of 2009, and 4230 cardiovascular deaths (870 CHD, 1859 stroke) were identified. Cox proportional-hazard regression models were used to estimate hazard ratios (HR). During the first-two thirds of the follow-up – where the proportional hazards assumption was met – the multivariate-adjusted HR (95% confidence interval) for total CVD mortality was 0.77 (0.61–0.98) among men and 0.82 (0.61–1.10) among women who were physically active at baseline (≥5 h/week versus 1–2 h/week). The corresponding HRs for coronary heart disease (CHD) mortality were 0.65 (0.39–1.07) and 0.40 (0.17–0.91), respectively. The combined associations of sports participation during adulthood and adolescence were also examined. Among men who participated in sports for ≥5 h/week at baseline, the multivariate-adjusted HR for those who also engaged in sport club activities during adolescence was 0.89 (0.61–1.30) for total CVD mortality and 0.24 (0.08–0.71) for CHD mortality when compared to non-participants. Among women, no statistically significant differences were found between sport club participants and non-participants. In conclusion, participating in sport clubs during adolescence might lead to a more pronounced risk-reduction for CHD mortality among men who also participate in sport activities during adulthood.

DOI： 10.1016/j.ypmed.2018.05.012

Effect of laughter yoga on salivary cortisol and dehydroepiandrosterone among healthy university students: A randomized controlled trial Reviewed International journal

Akiko Fujisawa, Atsuhiko Ota, Masaaki Matsunaga, Yuanying Li, Masako Kakizaki, Hisao Naito, Hiroshi Yatsuya

Complementary Therapies in Clinical Practice Vol. 32 page： 6 - 11 2018.8

Language：English Publishing type：Research paper (scientific journal) Publisher：Churchill Livingstone

Objective: To examine whether laughter yoga (LY), i.e., simulated laughter, alters cortisol and dehydroepiandrosterone (DHEA) levels and cortisol/DHEA (C/D) ratios. Methods: In a randomized controlled trial, 120 healthy university students were allocated to experiencing LY, watching a comedy movie (spontaneous laughter), or reading a book. Salivary cortisol and DHEA levels were measured immediately before, immediately after, and 30 min after the intervention. Results: Cortisol levels and C/D ratios significantly decreased by time in the LY and comedy movie groups. Significant group*time interactions were found between these two groups for cortisol levels and C/D ratios. DHEA levels did not change by time in the LY group. Conclusions: LY decreased cortisol levels and C/D ratios but did not affect DHEA levels. Simulated and spontaneous laughter differently affected the dynamics of cortisol levels and C/D ratios. Effect of spontaneous laughter on the cortisol dynamics lasted longer than that of simulated laughter. (UMIN000019409).

DOI： 10.1016/j.ctcp.2018.04.005

Non-communicable disease risk factor profile among public employees in a regional city in northern Ethiopia Reviewed International coauthorship International journal

Lemlem Weldegerima Gebremariam, Chifa Chiang, Hiroshi Yatsuya, Esayas Haregot Hilawe, Alemayehu Bayray Kahsay, Hagos Godefay, Loko Abraham, Yoshihisa Hirakawa, Hiroyasu Iso, Atsuko Aoyama

Scientific Reports Vol. 8 ( 1 ) page： 9298 2018.6

Language：English Publishing type：Research paper (scientific journal) Publisher：Nature Publishing Group

The burden of non-communicable diseases (NCDs) is increasing in Ethiopia. This study aims to describe the prevalence of NCD risk factors of public employees in a regional city in northern Ethiopia. We conducted a cross-sectional epidemiological study targeting men and women aged 25-64 years employed by public offices in Mekelle. The prevalence was age-standardized to the Ethiopian 2007 population. Among the 1380 subjects (823 men and 557 women), 68.7% had less than 1 serving of fruits and vegetables per day, 41.0% were physically inactive, and 57.3% observed religious fast. The age-standardised prevalence of abdominal obesity was 29.3% in men and 58.5% in women, but that of metabolic syndrome was comparable between men (39.2%) and women (39.0%). The prevalence of diabetes was underestimated if only fasting blood glucose (FBG) was used for the diagnosis compared to combination of FBG and glycated haemoglobin (HbA1c) (6.7% in men and 3.8% in women vs. 12.1% in men and 5.6% in women). More than a quarter (26.1%) of men and 8.7% of women had estimated 10-year risk of cardiovascular disease of 10% or more. This study revealed the high prevalence of NCD metabolic risk factors among the urban public employees in the highland of Ethiopia.

DOI： 10.1038/s41598-018-27519-6

Association of extremely high levels of high-density lipoprotein cholesterol with cardiovascular mortality in a pooled analysis of 9 cohort studies including 43,407 individuals: The EPOCH–JAPAN study Reviewed

Aya Hirata, Daisuke Sugiyama, Makoto Watanabe, Akiko Tamakoshi, Hiroyasu Iso, Kazuhiko Kotani, Masahiko Kiyama, Michiko Yamada, Shizukiyo Ishikawa, Yoshitaka Murakami, Katsuyuki Miura, Hirotsugu Ueshima, Tomonori Okamura, Hirotsugu Ueshima, Tomonori Okamura, Yutaka Imai, Takayoshi Ohkubo, Fujiko Irie, Hiroyasu Iso, Akihiko Kitamura, Toshiharu Ninomiya, Yutaka Kiyohara, Katsuyuki Miura, Yoshitaka Murakami, Hideaki Nakagawa, Takeo Nakayama, Akira Okayama, Toshimi Sairenchi, Shigeyuki Saitoh, Kiyomi Sakata, Akiko Tamakoshi, Ichiro Tsuji, Michiko Yamada, Masahiko Kiyama, Yoshihiro Miyamoto, Shizukiyo Ishikawa, Hiroshi Yatsuya, Evidence for Cardiovascular Prevention from Observational Cohorts in Japan (EPOCH–JAPAN) Research Group

Journal of Clinical Lipidology Vol. 12 ( 3 ) page： 674 - 684.e5 2018.5

Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier Ltd

Background: The effect of very high or extremely high levels of high-density lipoprotein cholesterol (HDL-C) on cardiovascular disease (CVD) is not well described. Although a few recent studies have reported the adverse effects of extremely high levels of HDL-C on CVD events, these did not show a statistically significant association between extremely high levels of HDL-C and cause-specific CVD mortality. In addition, Asian populations have not been studied. Objective: We examine the impact of extremely high levels of HDL-C on cause-specific CVD mortality using pooled data of Japanese cohort studies. Methods: We performed a large-scale pooled analysis of 9 Japanese cohorts including 43,407 participants aged 40–89 years, dividing the participants into 5 groups by HDL-C levels, including extremely high levels of HDL-C ≥2.33 mmol/L (≥90 mg/dL). We estimated the adjusted hazard ratio of each HDL-C category for all-cause death and cause-specific deaths compared with HDL-C 1.04–1.55 mmol/L (40–59 mg/dL) using a cohort-stratified Cox proportional hazards model. Results: During a 12.1-year follow-up, 4995 all-cause deaths and 1280 deaths due to overall CVD were identified. Extremely high levels of HDL-C were significantly associated with increased risk of atherosclerotic CVD mortality (hazard ratio = 2.37, 95% confidence interval: 1.37–4.09 for total) and increased risk for coronary heart disease and ischemic stroke. In addition, the risk for extremely high HDL-C was more evident among current drinkers. Conclusion: We showed extremely high levels of HDL-C had an adverse effect on atherosclerotic CVD mortality in a pooled analysis of Japanese cohorts.

DOI： 10.1016/j.jacl.2018.01.014

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降圧剤の投与は高血圧ラット肝臓Cyp7a1プロモーターのメチル化頻度を低下させる

内藤久雄, 三宅邦夫, 袁援, 橋本沙幸, 浅野友美, 北森一哉, 八谷寛, 那須民江

産業衛生学雑誌 Vol. 60 ( 臨増 ) page： 303 - 303 2018.5

Association between average daily television viewing time and the incidence of ovarian cancer: findings from the Japan Collaborative Cohort Study. Reviewed International journal

Shigekazu Ukawa, Akiko Tamakoshi, Mitsuru Mori, Satoyo Ikehara, Toru Shirakawa, Hiroshi Yatsuya, Hiroyasu Iso

Cancer causes & control : CCC Vol. 29 ( 2 ) page： 213 - 219 2018.2

Language：English Publishing type：Research paper (scientific journal)

PURPOSE: Seventy-five percent of epidemiological studies have reported that sedentary behavior is associated with ovarian cancer incidence. Although Japan has one of the most sedentary populations, with median sitting times of 7 h/day, this association has not been investigated. This study aimed to elucidate the association between average daily television (TV) viewing time, which is a major sedentary behavior, and the incidence of ovarian cancer in a large-scale nationwide cohort study in Japan. METHODS: A total of 34,758 female participants aged 40-79 years without a history of cancer at baseline were included in the study. The inverse probability weighted competing risk model was used to calculate the hazard ratio (HR) and 95% confidence interval (CI) for the incidence of ovarian cancer. RESULTS: During a median follow-up of 19.4 years, 59 participants developed ovarian cancer (ICD-10: C56), 2,706 participants developed other types of cancer, and 4,318 participants died. Participants who watched TV for ≥ 5 h/day were more likely to develop ovarian cancer than those who watched TV for < 2 h/day (HR 2.15; 95% CI 1.54-2.99). CONCLUSION: Our findings suggest that reducing the amount of time spent sedentarily may be beneficial for preventing ovarian cancer.

DOI： 10.1007/s10552-018-1001-8

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Relationships among Socioeconomic Factors and Self-rated Health in Japanese Adults: NIPPON DATA2010. Reviewed

Ota A, Yatsuya H, Nishi N, Okuda N, Ohkubo T, Hayakawa T, Kadota A, Okayama A, Miura K

Journal of epidemiology Vol. 28 ( Supplement_III ) page： S66 - S72 2018

Language：English Publishing type：Research paper (scientific journal)

BACKGROUND: The distributions of socioeconomic status (SES) factors have been changing in Japan. We examined the relationships among SES and self-rated health (SRH) in Japanese adults. METHODS: We analyzed 1,178 men and 1,555 women. We showed the distribution of SRH by sex and age and examined cross-sectional relationships among educational attainment, marital/living statuses, working status, household income and expenditure, and fine SRH (defined as excellent, very good, or good). We adjusted for age, subjective symptoms, visiting doctors, monthly equivalent household expenditure (EHE), and living in their own house. RESULTS: The age-standardized prevalence of fine SRH was 79% and 73% among men and women, respectively. Among men, graduating from high school (adjusted odds ratio [aOR] 1.53; 95% confidence interval [CI], 1.07-2.19, relative to graduating from elementary or junior high school) and university or junior college (aOR 1.74; 95% CI, 1.15-2.62) was associated with fine SRH. Among women, graduating from university or junior college was associated with fine SRH (aOR 1.65; 95% CI, 1.12-2.46). Neither marital/living status nor working status was associated with SRH after adjustments for age in either sex. Among women, high EHE and income were associated with fine SRH (the highest expenditure group: aOR 1.80; 95% CI, 1.22-2.65; the highest income group: aOR 2.15; 95% CI, 1.34-3.46, relative to the corresponding lowest group). These simple relationships were not observed for men. CONCLUSIONS: High educational attainment was associated with fine SRH. Relationships among household income, EHE, and fine SRH differed by sex.

DOI： 10.2188/jea.JE20170246

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