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Goudarzi Afshar S, Tamri P, Nourian A, Mahmoudi A. Catechin Hydrate Improves Hypertrophic Scar in Rabbit Ear Model via Reduction of Collagen Synthesis. rbmb.net 2024; 13 (1) :13-22
URL: http://rbmb.net/article-1-1337-en.html
URL: http://rbmb.net/article-1-1337-en.html
Department of Pharmacology &Toxicology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran.
Abstract: (652 Views)
Background: Hypertrophic scar (HS) is a cutaneous condition results from abnormal wound healing following deep tissue injury. To date, there is no optimal treatment for this skin disorder. Catechins possess anti-inflammatory, antioxidant and anti-fibrotic properties. In this study we investigated the effects of catechin hydrate (CH) in rabbit ear model of HS.
Methods: A rabbit ear model of hypertrophic scar was set up. Ten New Zealand white rabbit were divided into 5 equal groups: non-treatment group, vehicle control, treated with intralesional injection of dimethyl sulfoxide (DMSO), and test groups, received intralesional injection of CH/DMSO solution at concentration of 0.25, 1.25 and, 2.5 mg/ml, respectively. The treatments were initiated 35 days after wounding once a week for 4 weeks. The scar elevation index (SEI) and the epidermal thickness index (ETI) were measured using Hematoxylin and Eosin (H&E) staining and the amount of collagen deposition were determined after Masson' trichrome staining. In addition, the enzyme-linked immunosorbent assay (ELISA) method was used to determine the levels of type І and ІІІ collagen and matrix metalloproteinase 1 (MMP1) in scar tissues.
Results: CH improved abnormal scarring at concentrations of 1.25 and 2.5 mg/ml and significantly (P<0.001) reduced the SEI and ETI. The levels of collagen type І and type ІІІ, and total collagen deposition were significantly (P<0.05) decreased in scar tissues of CH treated groups and no significant effect on MMP1 levels.
Conclusion: Our findings demonstrated that CH has the potential for the treatment of HSs.
Methods: A rabbit ear model of hypertrophic scar was set up. Ten New Zealand white rabbit were divided into 5 equal groups: non-treatment group, vehicle control, treated with intralesional injection of dimethyl sulfoxide (DMSO), and test groups, received intralesional injection of CH/DMSO solution at concentration of 0.25, 1.25 and, 2.5 mg/ml, respectively. The treatments were initiated 35 days after wounding once a week for 4 weeks. The scar elevation index (SEI) and the epidermal thickness index (ETI) were measured using Hematoxylin and Eosin (H&E) staining and the amount of collagen deposition were determined after Masson' trichrome staining. In addition, the enzyme-linked immunosorbent assay (ELISA) method was used to determine the levels of type І and ІІІ collagen and matrix metalloproteinase 1 (MMP1) in scar tissues.
Results: CH improved abnormal scarring at concentrations of 1.25 and 2.5 mg/ml and significantly (P<0.001) reduced the SEI and ETI. The levels of collagen type І and type ІІІ, and total collagen deposition were significantly (P<0.05) decreased in scar tissues of CH treated groups and no significant effect on MMP1 levels.
Conclusion: Our findings demonstrated that CH has the potential for the treatment of HSs.
Type of Article: Original Article |
Subject:
Cell Biology
Received: 2024/02/5 | Accepted: 2024/03/3 | Published: 2024/10/22
Received: 2024/02/5 | Accepted: 2024/03/3 | Published: 2024/10/22
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