Collagen

Publication Title: 
Phytotherapy research: PTR

The effects of topical administration of an alcohol extract of the leaves of an evergreen plant, Terminalia chebula, on the healing of rat dermal wounds, in vivo, was assessed. T. chebula treated wounds healed much faster as indicated by improved rates of contraction and a decreased period of epithelialization. Biochemical studies revealed a significant increase in total protein, DNA and collagen contents in the granulation tissues of treated wounds. The levels of hexosamine and uronic acid in these tissues, also increased upto day 8 post-wounding.

Author(s): 
Suguna, Lonchin
Singh, Surjeet
Sivakumar, Pitchumani
Sampath, Padmavathi
Chandrakasan, Gowri
Publication Title: 
Arthritis and Rheumatism

OBJECTIVE: Chebulagic acid (CHE) from the immature seeds of Terminalia chebula was identified from a natural product library as a potent suppressor of T cell activity. This study examined the effectiveness of CHE against the onset and progression of collagen-induced arthritis (CIA) in mice. METHODS: Arthritis was induced in DBA/1J mice by subcutaneous immunization with bovine type II collagen on days 0 and 21. CHE was administered intraperitoneally for 3 weeks, either as prophylaxis (10 or 20 mg/kg) before disease onset or as therapy (20 mg/kg) after disease onset.

Author(s): 
Lee, Sang-Ik
Hyun, Pung-Mi
Kim, Seung-Hyung
Kim, Kyoung-Shin
Lee, Sang-Keun
Kim, Byoung-Soo
Maeng, Pil Jae
Lim, Jong-Soon
Publication Title: 
Journal of the Science of Food and Agriculture

BACKGROUND: Persistent activation of hepatic stellate cells (HSC-T6) has been known to cause liver fibrosis. In this study, our objective was to investigate the effects of chebulagic acid and chebulinic acid, two hydrolysable tannins of tropical almond (Terminalia chebula) fruits, on collagen synthesis and signal transduction in transforming growth factor-?1-stimulated HSC-T6 cells.

Author(s): 
Chuang, Hsin-Ying
Ng, Lean-Teik
Lin, Liang-Tzung
Chang, Jung-San
Chen, Jen-Yang
Lin, Ta-Chen
Lin, Chun-Ching
Publication Title: 
Biological & Pharmaceutical Bulletin

Advanced glycation end-products (AGEs) have been implicated in the development of diabetic complications. We report the antiglycating activity of chebulic acid (CA), isolated from Terminalia chebula on breaking the cross-links of proteins induced by AGEs and inhibiting the formation of AGEs. Aminoguanidine (AG) reduced 50% of glycated bovine serum albumin (BSA) with glycolaldehyde (glycol-BSA)-induced cross-links of collagen at a concentration of 67.8 ± 2.5 mM, the level of CA required for exerting a similar antiglycating activity was 38.8 ± 0.5 µM.

Author(s): 
Lee, Ji-Young
Oh, Jun-Gu
Kim, Jin Sook
Lee, Kwang-Won
Publication Title: 
Spine

STUDY DESIGN: Nonviral transfection of nucleus pulposus cells with a telomerase expression construct to assess the effects on cellular lifespan, function, karyotypic stability, and transformation properties. OBJECTIVES: To investigate whether telomerase gene therapy can extend the cellular lifespan while retaining functionality of nucleus pulposus cells in a safe manner. SUMMARY OF BACKGROUND DATA: Degeneration of the intervertebral disc is an age-related condition in which cells responsible for the maintenance and health of the disc deteriorate with age.

Author(s): 
Chung, Sylvia A.
Wei, Ai Qun
Connor, David E.
Webb, Graham C.
Molloy, Timothy
Pajic, Marina
Diwan, Ashish D.
Publication Title: 
Nature Communications

With ageing, there is a loss of adult stem cell function. However, there is no direct evidence that this has a causal role in ageing-related decline. We tested this using muscle-derived stem/progenitor cells (MDSPCs) in a murine progeria model. Here we show that MDSPCs from old and progeroid mice are defective in proliferation and multilineage differentiation. Intraperitoneal administration of MDSPCs, isolated from young wild-type mice, to progeroid mice confer significant lifespan and healthspan extension.

Author(s): 
Lavasani, Mitra
Robinson, Andria R.
Lu, Aiping
Song, Minjung
Feduska, Joseph M.
Ahani, Bahar
Tilstra, Jeremy S.
Feldman, Chelsea H.
Robbins, Paul D.
Niedernhofer, Laura J.
Huard, Johnny
Publication Title: 
Experimental Gerontology
Author(s): 
Everitt, A. V.
Publication Title: 
Proceedings of the National Academy of Sciences of the United States of America

A fundamental question in the basic biology of aging is whether there is a universal aging process. If indeed such a process exists, one would expect that it develops at a higher rate in short- versus long-lived species. We have quantitated pentosidine, a marker of glycoxidative stress in skin collagen from eight mammalian species as a function of age. A curvilinear increase was modeled for all species, and the rate of increase correlated inversely with maximum life-span.

Author(s): 
Sell, D. R.
Lane, M. A.
Johnson, W. A.
Masoro, E. J.
Mock, O. B.
Reiser, K. M.
Fogarty, J. F.
Cutler, R. G.
Ingram, D. K.
Roth, G. S.
Monnier, V. M.
Publication Title: 
Medical Science Monitor: International Medical Journal of Experimental and Clinical Research

The approximately 4000 'normal' mammals that synthesize ascorbic acid produce on average circa 50 mg/kg per day routinely. Although humans have the same needs as normal mammals, they do not produce ascorbic acid at all and, on average, ingest only circa 1 mg/kg per day. The normal mammals' much larger production enables them to continually renew structural proteins, including both collagen, a flexible but inelastic tissue, and elastin, the elastic connective tissue.

Author(s): 
Ely, John T.
Publication Title: 
Food & Function

The present study aimed to evaluate the effect of an oral administration of marine collagen peptides (MCPs) pre- and post-acute ethanol intoxication in female Sprague-Dawley (SD) rats. MCPs were orally administered to rats at doses of 0 g per kg bw, 2.25 g per kg bw, 4.5 g per kg bw and 9.0 g per kg bw, prior to or after the oral administration of ethanol.

Author(s): 
Liang, Jiang
Li, Qiong
Lin, Bing
Yu, Yongchao
Ding, Ye
Dai, Xiaoqian
Li, Yong

Pages

Subscribe to RSS - Collagen