Local Administration of L-Arginine Accelerates Wound Closure
Publish place: Iranian Journal of Basic Medical Sciences، Vol: 12، Issue: 3
Publish Year: 1388
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJBMS-12-3_008
تاریخ نمایه سازی: 30 مهر 1400
Abstract:
Objective(s) The process of wound healing involves tightly integrated events including inflammation, granulation tissue formation and remodeling. Systemic administration of L-arginine promotes wound healing but its global side effects are undesirable. To confine the action of L-arginine at the site of injury, we tested the effects of local administration of L-arginine on the healing of excisional wound in the rat. Materials and Methods Full thickness excisional wounds were generated on the dorsum of adult male rats. The test wounds received ۲۰۰ pm or ۴۰۰ pm of L-arginine on day ۳ and ۵ post-wounding. Normal saline was injected into the sham wounds which were otherwise treated as the test wounds. Control wounds remained unmanipulated. The wound size was monitored daily by imaging. To determine the rate of wound closure, wound images were scanned and the rate of size reduction was analyzed and quantified by ScnImage software. The repaired tissues were harvested on day ۱۲ post-wounding. The tissue sections were prepared and stained for microscopic examination. Results Wounds treated with L-arginine showed a significant increase in the rate of wound closure. The morphology of basal keratinocytes was altered, and the thickness of neoepidermis was markedly reduced in the wounds treated with L-arginine. Both tested dose of L-arginine were equally effective. Conclusion Local administration of L-arginine accelerates wound closure and has profound effects on keratinocytes performance during the process of healing. Therefore, it can be potentially used for treatment of skin disorders, in particular, those characterized by hyperkeratosis.
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Authors
Masoumeh Varedi
Department of Physiology, Medical School, Namazi Hospital, Tissue Transplant Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
Zahra Akbari
Department of Physiology, Bushehr University of Medical Sciences, Bushehr, Iran
Gholam Abbas Dehghani
Department of Physiology, Medical School, Namazi Hospital, Tissue Transplant Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
Sayed Ziaedin Tabei
Department of Pathology, Medical School, Namazi Hospital, Tissue Transplant Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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