Yoh-ichi Koyama
17 Papers
194 Citations
Yoh-ichi Koyama is an academic researcher. The author has contributed to research in topics: Decorin & Dermatan sulfate. The author has an hindex of 11, co-authored 17 publications.
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Papers
Effects of Ingestion of Collagen Peptide on Collagen Fibrils and Glycosaminoglycans in the Dermis
Naoya Matsuda,Yoh-ichi Koyama,Yoshinao Z. Hosaka,Hiromi Ueda,Takafumi Watanabe,Takayuki Araya,Shinkichi Irie,Kazushige Takehana +7 more
TL;DR: It is suggested that ingestion of collagen peptide induces increased fibroblast density and enhances formation of collagen fibrils in the dermis in a protein-specific manner.
115
Differential Effects of Cytokines and Immunosuppressive Drugs on CD40, B7–1, and B7–2 Expression on Purified Epidermal Langerhans Cells
Claudio Guedes Salgado,Koichiro Nakamura,Makoto Sugaya,Yayoi Tada,Akihiko Asahina,Kunihiko Tamaki,Satoru Fukuda,Yoh-ichi Koyama,Shinkichi Irie +8 more
TL;DR: A better understanding of the role of selective cytokines and immunosupressive drugs in the modulation of the antigen-presenting capacity of Langerhans cells is provided.
65
Effect of Tenascin-C Deficiency on Chemically Induced Dermatitis in the Mouse
Yoh-ichi Koyama,Masashi Kusubata,Atsushi Yoshiki,Noriko Hiraiwa,Tomoo Ohashi,Shinkichi Irie,Moriaki Kusakabe +6 more
TL;DR: The results suggest that tenascin-C plays a role in vivo in inflammatory responses in the skin, and that the genetic background has profound effects on the function of tenascInC in mouse dermatitis.
54
Effects of ingestion of collagen peptide on collagen fibrils and glycosaminoglycans in Achilles tendon.
Jun Minaguchi,Yoh-ichi Koyama,Natsuko Meguri,Yoshinao Z. Hosaka,Hiromi Ueda,Masashi Kusubata,Arisa Hirota,Shinkichi Irie,Naoki Mafune,Kazushige Takehana +9 more
TL;DR: It is suggested that the ingestion of collagen peptide affects the size of collagen fibrils and composition of glycosaminoglycans in the Achilles tendon and thus may improve the mechanical properties of the Achilles Achilles tendon.
Collagen peptide ingestion alters lipid metabolism-related gene expression and the unfolded protein response in mouse liver.
Chisa Tometsuka,Yoh-ichi Koyama,Tomoko Ishijima,Tsudoi Toyoda,Miki Teranishi,Kazushige Takehana,Keiko Abe,Yuji Nakai +7 more
TL;DR: Analysis of DNA microarray analysis of the liver revealed that lipid metabolism in the liver is altered by CP ingestion, and the decrease in blood cholesterol levels in the CP group is not due to enhancement of the steroid metabolic process.