Effects of Epicatechin Gallate on Wound Healing and Scar Formation in a Full Thickness Incisional Wound Healing Model in Rats
| Autor: | Ian Appleton, Rowena Howard, Irene Hall, Mohit Kapoor |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2004 |
| Předmět: |
Male
Vascular Endothelial Growth Factor A Antioxidant Time Factors Injections Intradermal medicine.medical_treatment Blotting Western Neovascularization Physiologic Biology Pharmacology Catechin Pathology and Forensic Medicine Rats Sprague-Dawley chemistry.chemical_compound Cicatrix In vivo medicine Animals Protease Inhibitors Nitrites Wound Healing Arginase Proteins Rats Nitric oxide synthase Vascular endothelial growth factor Isoenzymes Vascular endothelial growth factor A Disease Models Animal Epicatechin gallate Biochemistry chemistry Cyclooxygenase 2 Prostaglandin-Endoperoxide Synthases biology.protein Cyclooxygenase Nitric Oxide Synthase Wound healing Regular Articles |
| Popis: | Catechins are naturally occurring polyphenolic compounds with putative anti-inflammatory, antioxidant and free radical scavenging effects in vitro. However, their potential effects in vivo have not been established. Therefore we have investigated the effects of the catechin epicatechin gallate (ECG), on scar formation in a full thickness incisional model of wound healing in rats. ECG showed a significant improvement in the quality of scar formation both in terms of maturity and orientation of the collagen fibers. An increase in inducible nitric oxide synthase and cyclooxygenase-2 and a decrease in arginase-I activity and protein levels were observed at earlier time points. In addition, an increase in the number of new blood vessels was observed in the ECG-treated group. This correlated with the protein levels of vascular endothelial growth factor, the most potent angiogenic protein known. This study has therefore demonstrated, for the first time, that catechins, namely ECG, can significantly improve the quality of wound healing and scar formation. These effects may in part be due to an acceleration of the angiogenic response and an up-regulation of the enzymes nitric oxide synthase and cyclooxygenase. |
| Databáze: | OpenAIRE |
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