Domestic patents
JPB 3574612 – Collagen supplemented to food and drinks
JPB 3881453 – Calcium absorption-enhancing collagen peptides and their manufacturing method
JPB 4377522 – Method of manufacturing of stable, acidified milk beverage using collagen peptides
JPB 4490498 – Disease-suppressing agent (bones, joints and wound healing)
JPB 4523339 – Agent that enhances bone strength
JPB 4709730 – Chewable tablet
JPB 5361155 – Degraded gelatin powder and its manufacturing method
Registered trademark
No. 5524071 – Wellnex
1. Liu C, Sugita K, Nihei KI, Yoneyama K, Tanaka H: Absorption of hydroxyproline-containing peptides in vascularly perfused rat small intestine in situ. Biosci Biotech Bioch;
73:1741-1747, 2009
2. Nakatani S, Mano H, Sampei C, Shimizu J, Wada M: Chondroprotective effect of the bioactive peptide prolyl-hydroxyproline in mouse articular cartilage in vitro and in vivo.
Osteoarth Cartilage; 17:1620-1627, 2009
3. Sugihara F, Inoue N, KuwamoriM, Taniguchi M: Quantification of hydroxyprolyl-glycine (Hyp-Gly) in human blood after ingestion of collagen hydrolysate. J Biosci Bioeng;
113:202-203, 2012
4. Sugihara F, Inoue N: Clinical effects of collagen hydrolysates ingestion on UV-induced pigmented spots of human skin: A preliminary study. Health Sciences; 28:153-156, 2012
5. Nakatani S, Kobata K, Nakajima H, Kimira Y, Mano H, Sugihara F, Wada M: Transcriptome of ATDC5 Cultured with Glucosamine Hydrochloride and Collagen Hydrolysate Indicates
a New Candidate Gene for the Differentiation of Chondrocytes. J Chitin Chitosan Sci; 2:233-237, 2014
6. Kumar S, Sugihara F, Suzuki K, Inoue N, Venkateswarathirukumara S: A double-blind, placebo-controlled, randomised, clinical study on the effectiveness of collagen peptide on
osteoarthritis. J Sci Food Agric; 95:702-707, 2014
7. Kimira Y, Ogura K, Taniuchi Y, Kataoka A, Inoue N, Sugihara F, Nakatani S, Shimizu J, Wada M, Mano H: Collagen-derived dipeptide prolyl-hydroxyproline promotes differentiation
of MC3T3-E1 osteoblastic cells. Biochem Biophys Res Co; 453:498-501, 2014
8. Sugihara F, Inoue N, Wang X: Clinical effects of ingesting collagen hydrolysate on facial skin properties. Jpn Pharmacol Ther; 43:67-70, 2015
9. Sugihara F, Inoue N, Koizumi S, Sriraam VT: Collagen hydrolysate enhanced pressure ulcer healing in a randomized double-blind placebo-controlled clinical study.
Jpn Pharmacol Ther; 43:1323-1328, 2015
10. Inoue N, Sugihara F, Wang X: Ingestion of bioactive collagen hydrolysates enhance facial skin moisture and elasticity and reduce facial ageing signs in a randomised double-
blind placebo-controlled clinical study. J Sci Food Agric; 2016, in press
11. Castelo-Branco C, Pons F, Gratac E, Fortuny A, Vanrell JA, Gonz疝ez-Merlo J: Relationship between skin collagen and bone changes during aging. Maturitas; 18:199-206, 1994
12. Shigemura Y, Iwai K, Morimatsu F, Iwamoto T, Mori T, Oda C, Taira T, Park EY, Nakamura Y, Sato K: Effect of prolyl-hydroxyproline (Pro-Hyp), a food-derived collagen peptide in
human blood, on growth of fibroblasts from mouse skin. J Agric Food Chem; 57:444-449., 2009
13. Ohara H, Ichikawa S, Matsumoto H, Akiyama M, Fujimoto N, Kobayashi T, Tajima S: Collagen‐derived dipeptide, proline‐hydroxyproline, stimulates cell proliferation and hyaluronic
acid synthesis in cultured human dermal fibroblasts. Journal Dermatol 37:330-338, 2010.
14. Ohara H, Matsumoto H, Ito K, Iwai K, Sato K: Comparison of quantity and structures of hydroxyproline-containing peptides in human blood after oral ingestion of gelatin
hydrolysates from different sources. J Agric Food Chem; 55:1532-1535, 2007
15. Inoue K, Nakamura I, Takasaki M, Maeda R, Saito I, Maeda K, Anaka Y: Nutrition intervention methods based on home-visit nutritional support and verification of the resulting
improvement effects. J Jpn Diet Assoc; 55:656-664, 2012
16. Ichimura T, Yamanaka A, Otsuka T, Yamashita E, Maruyama S: Antihypertensive effect of enzymatic hydrolysate of collagen and Gly-Pro in spontaneously hypertensive rats.
Biosci Biotech Bioch; 73:2317-2319, 2009; Food Sci Technol Res; 2009