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Revised method for preparation of simulated body fluid for assessment of the apatite-forming ability of bioactive materials: proposal of mixing two stock solutions 査読有り Open Access

14 巻頁： 38660 - 38667 2024年12月

Apatite Formation on α-Tricalcium Phosphate Modified with Bioresponsive Ceramics in Simulated Body Fluid Containing Alkaline Phosphatase 査読有り

Taishi Yokoi, Shinji Tomita, Jin Nakamura, Ayae Sugawara-Narutaki, Yuko Matsukawa, Masakazu Kawashita and Chikara Ohtsuki

Biomimetics 9 巻 ( 8 ) 頁： 502 2024年8月

Loading of antibiotic molecules into organically modified layered calcium silicate

Nakamura, J; Kato, H; Miyazaki, T; Ohtsuki, C

JOURNAL OF ASIAN CERAMIC SOCIETIES 12 巻 ( 3 ) 頁： 227 - 233 2024年7月

In Situ and Ex Situ Studies of Ring-Like Assembly of Silica Nanoparticles in the Presence of Poly(propylene oxide)–Poly(ethylene oxide) Block Copolymers 査読有り

Rintaro Takahashi, Kazuki Yamamoto, Ryo Sugahara, Ryusuke Otake, Keisuke Hayashi, Jin Nakamura, Chikara Ohtsuki, Sadahito Aoshima, Ayae Sugawara-Narutaki

Langmuir 2023年8月

Biological properties of self-assembled nanofibers of elastin-like block polypeptides for tissue-engineered vascular grafts: platelet inhibition, endothelial cell activation and smooth muscle cell maintenance 査読有り国際誌

Natsume, K; Nakamura, J; Sato, K; Ohtsuki, C; Sugawara-Narutaki, A

REGENERATIVE BIOMATERIALS 10 巻 ( rbac111 ) 頁： rbac111 2023年1月

Transformation behaviour of salts composed of calcium ions and phosphate esters with different linear alkyl chain structures in a simulated body fluid modified with alkaline phosphatase

Yokoi, T; Mio, A; Nakamura, J; Sugawara-Narutaki, A; Kawashita, M; Ohtsuki, C

SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 23 巻 ( 1 ) 頁： 341 - 351 2022年12月

Organic modification of layered zirconium phosphate/phosphonate for controlled release of therapeutic inorganic ions

Nakamura, J; Ito, R; Kozaki, R; Sugawara-Narutaki, A; Ohtsuki, C

SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 22 巻 ( 1 ) 頁： 1000 - 1012 2021年12月

Selective adsorption of dyes on TiO<sub>2</sub>-modified hydroxyapatite photocatalysts morphologically controlled by solvothermal synthesis

Goto, T; Cho, SH; Ohtsuki, C; Sekino, T

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 9 巻 ( 4 ) 頁： 105738 2021年8月

Thixotropic Hydrogels Composed of Self-Assembled Nanofibers of Double-Hydrophobic Elastin-Like Block Polypeptides

Sugioka, Y; Nakamura, J; Ohtsuki, C; Sugawara-Narutaki, A

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES 22 巻 ( 8 ) 頁： 4104 2021年4月

Incorporation of tetracarboxylate ions into octacalcium phosphate for the development of next-generation biofriendly materials

Yokoi, T; Goto, T; Hara, M; Sekino, T; Seki, T; Kamitakahara, M; Ohtsuki, C; Kitaoka, S; Takahashi, S; Kawashita, M

COMMUNICATIONS CHEMISTRY 4 巻 ( 1 ) 頁： 4 2021年1月

Preparation of layered calcium silicate organically modified with two types of functional groups for varying chemical stability

Nakamura, J; Suzuki, Y; Narukawa, R; Sugawara-Narutaki, A; Ohtsuki, C

JOURNAL OF ASIAN CERAMIC SOCIETIES 9 巻 ( 1 ) 頁： 90 - 100 2021年1月

Behaviour of calcium phosphate ester salts in a simulated body fluid modified with alkaline phosphatase: a new concept of ceramic biomaterials 査読有り

Yokoi, T; Ujiyama, T; Nakamura, J; Kawashita, M; Ohtsuki, C

MATERIALS ADVANCES 1 巻 ( 9 ) 頁： 3215 - 3220 2020年12月

Human stem cell response to layered zirconium phosphate 査読有り

Jin Nakamura, Kanta Endo, Ayae Sugawara-Narutaki, Chikara Ohtsuki(DOI: 10.1039/d0ra04924g)

RSC Advances 10 巻頁： 36051-36057 2020年9月

Tearable and Fillable Composite Sponges Capable of Heat Generation and Drug Release in Response to Alternating Magnetic Field 査読有り

Koichiro Hayashi, Atsuto Tokuda, Jin Nakamura, Ayae Sugawara-Narutaki, Chikara Ohtsuki

Materials 13 巻 ( 16 ) 頁： 3637 2020年8月

Hydroxyapatite Formation from Octacalcium Phosphate and Its Related Compounds: A Discussion of the Transformation Mechanism 査読有り

Yokoi, T; Goto, T; Kato, T; Takahashi, S; Nakamura, J; Sekino, T; Ohtsuki, C; Kawashita, M

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 93 巻 ( 5 ) 頁： 701 - 707 2020年5月

Rheology of Dispersions of High-Aspect-Ratio Nanofibers Assembled from Elastin-Like Double-Hydrophobic Polypeptides 査読有り

Sugawara-Narutaki, A; Yasunaga, S; Sugioka, Y; Le, DHT; Kitamura, I; Nakamura, J; Ohtsuki, C

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES 20 巻 ( 24 ) 2019年12月

Ring-Like Assembly of Silica Nanospheres in the Presence of Amphiphilic Block Copolymer: Effects of Particle Size 査読有り

Atsumi, C; Araoka, S; Landenberger, KB; Kanazawa, A; Nakamura, J; Ohtsuki, C; Aoshima, S; Sugawara-Narutaki, A

LANGMUIR 34 巻 ( 26 ) 頁： 7751 - 7758 2018年7月

Apatite coating on dendrimer-modified buckypaper and the formation of nanoapatite on MWCNTs 査読有り

Tomoyuki Tajima, Tomoaki Tanaka, Hideaki Miyake, Ill Yong Kim, Chikara Ohtsuki and Yutaka Takaguchi

Polymer Journal 2018年5月

Introduction of alkylammonium into calcium silicate hydrate towards application in development of novel biomaterial

Jin Nakamura, Ryosuke Narukawa, Ayae Sugawara-Narutaki, Chikara Ohtsuki

Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy 65 巻 ( 6 ) 頁： 325 - 327 2018年

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 the Japan Society of Powder and Powder Metallurgy

Human body contains trace inorganic elements that play important roles in the regulation of vital reactions. Biomaterials releasing the trace inorganic elements are suggested to be beneficial for tissue reconstruction remedies. The authors focused on inorganic layered compounds that give drug-releasing system tailored by assembling nanosheet-like crystals of the compounds with inserting ions and macromolecules which promote tissue regeneration. In the present study, calcium silicate hydrate (C-S-H) was selected as the framework, and its preparation conditions via precipitation method were explored. Moreover, the incorporation behaviors of alkylammonium molecules into the C-S-H were evaluated by their simultaneous addition during the method. Agglomerates of nanosheet-like C-S-H were precipitated by introducing calcium nitrate aqueous solution into equimolar concentration of sodium silicate aqueous solution in a controlled manner. By soaking C-S-H into simulated body fluid, which mimicked the inorganic elemental composition of human blood plasma, bone-like apatite was precipitated on its surface. The incorporation of tetrabuthylammonium cations (TBA+) were conducted by the addition of its hydroxide into sodium silicate aqueous solution during the preparation. XRD pattern of the sample showed the broadening of a peak, attributed to the interlayer distances in a C-S-H crystal. These results suggested the introduction of TBA+ in the C-S-H.

DOI： 10.2497/jjspm.65.325

Scopus

Periodic Surface-Ring Pattern Formation for Hydroxyapatite Thin Films Formed by Biomineralization-Inspired Processes

Yulai Han, Tatsuya Nishimura, Misato Iimura, Takeshi Sakamoto, Chikara Ohtsuki, Takashi Kato

LANGMUIR 33 巻 ( 38 ) 頁： 10077 - 10083 2017年9月

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

Surface morphology is a key factor that might significantly influence the properties of biomaterials. In this study, periodic surface-ring structures have been constructed for calcium phosphate thin films via biomineralization-inspired crystallization process. The patterned octacalcium phosphate crystals have been obtained on poly(2-hydroxyethyl methacrylate) (PHEMA) matrix in the presence of poly(acrylic acid) (PAA). The patterned surface morphologies of the crystal thin films could be tuned by the amount of PAA additives. In addition, the rapid and topotactic transformation to hydroxyapatite (HAP) thin films with surface-ring structures has also been achieved. This study may provide new strategy toward the design of functional calcium phosphate-based thin-film hybrids.

DOI： 10.1021/acs.langmuir.7b02126

Web of Science

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