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A preclinical study of the effects of seabuckthorn (Hippophae rhamnoides L.) leaf extract on cutaneous wound healing in albino rats

A preclinical study of the effects of seabuckthorn (Hippophae rhamnoides L.) leaf extract on cutaneous wound healing in albino rats

International Journal of Lower Extremity Wounds 4(2): 88-92

ISSN/ISBN: 1534-7346

PMID: 15911921

DOI: 10.1177/1534734605277401

Hippophae rhamnoides L. (family Elaeagnaceae), commonly known as seabuckthorn, is a wild shrub growing at high altitude (1200-4500 meters) in adverse climatic conditions. The aim of the present study was to evaluate healing potential of seabuckthorn leaves in a preclinical study on rats using a cutaneous excision-punch wound model. Four full-thickness excision-type wounds of 8.0 mm diameter were created on the dorsal surface of rats under aseptic conditions. The aqueous lyophilized extract of seabuckthorn leaves, at doses of 0.5%, 1.0%, and 1.5% w/v prepared in propylene glycol, were applied topically twice daily for 7 days. Control animals received the vehicle alone in an identical manner. Wound granulation tissues were excised on eighth day postwounding, and the hydroxyproline, hexosamine, total protein content, and antioxidant levels were determined. Wound surface area was also measured on the eighth day before wound excision to determine wound contraction. Topical application of 1.0% seabuckthorn leaf extract statistically significantly augmented the healing process, as evidenced by increases in the content of hydroxyproline and protein as well as the reduction in wound area when compared with similar effects in response to treatment using povidone-iodine ointment (standard care). The reduced glutathione, vitamin C, superoxide dismutase, catalase, and glutathione peroxidase activities showed significant increases in seabuckthorn leaf extract-treated wounds as compared to controls. The lipid peroxide levels were significantly decreased in leaf extract-treated wounds. The results suggest that aqueous leaf extract of seabuckthorn promotes wound healing, which may be due to increased antioxidant levels in the granulation tissue.

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Accession: 048102908

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