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Evidence-Based Complementary and Alternative Medicine
Volume 2015 (2015), Article ID 245328, 4 pages
http://dx.doi.org/10.1155/2015/245328
Research Article

Topical Hypericum perforatum Improves Tissue Regeneration in Full-Thickness Excisional Wounds in Diabetic Rat Model

1Young Researchers and Elite Club, Islamic Azad University, Tehran Medical Sciences Branch, Tehran, Iran
2Student Research Committee, Shahid Beheshti University of Medical Sciences, Tehran, Iran
3Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
4Dezful University of Medical Sciences, Dezful, Iran

Received 20 April 2015; Accepted 18 August 2015

Academic Editor: Cheorl-Ho Kim

Copyright © 2015 Soheila Yadollah-Damavandi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Delayed wound healing process is one of the most important concerns in diabetes. Healing of wounds has four phases, namely, hemostasis, inflammation, proliferation, and remodeling. For a successful repair, all four factors must occur properly. Hence, we aimed to evaluate the healing effects of Hypericum perforatum (HP) on full-thickness diabetic skin wounds by using stereological methods. Forty-eight female diabetic rats were randomly divided into four groups (): gel base treated group, HP 5% gel treated group, HP 10% gel treated group, and the control group which received no treatment. A circular 1 cm2 full-thickness wound was created on the animal’s neck and wound area was measured every three days. After sacrificing the animals, skin samples were fixed and prepared for stereological evaluations. Based on the results, HP treated group showed faster wound closure rate in comparison with control and vehicle groups (). In addition, numerical density of fibroblasts, volume density of collagen bundles, and mean diameter and volume densities of the vessels in HP group were significantly higher than control and vehicle groups. The results of this study showed that HP has the ability to improve tissue regeneration by enhancing fibroblast proliferation, collagen bundle synthesis, and revascularization.