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Abstract Title:

Systemic and topical Ginkgo biloba leaf extract (Egb-761) ameliorated rat paw inflammation in comparison to dexamethasone.

Abstract Source:

J Ethnopharmacol. 2021 Sep 11 ;282:114619. Epub 2021 Sep 11. PMID: 34520829

Abstract Author(s):

Rania A Abdel-Emam, Ahmed M Abd-Eldayem

Article Affiliation:

Rania A Abdel-Emam

Abstract:

ETHNOPHARMACOLOGICAL RELEVANCE: Ginkgo Biloba leaf extract (Egb-761) is used for treating various inflammatory disease conditions therefore this study was performed.

AIM OF THE STUDY: The present study aimed at comparing the ameliorative effects of both systemic and topical Egb-761 versus dexamethasone on carrageenan-induced hind paw inflammation in rats.

MATERIAL AND METHODS: Wistar albino rats were injected with carrageenan solution in the sub-planter region of the right hind paw. Egb-761 and dexamethasone were administered systemically to two groups while Egb-761 ointment 2% and dexamethasone sodium phosphate ointment were applied topically for another two groups. Vernier Caliper was used to assess rat paw thickness. Tissue malondialdehyde (MDA), nitric oxide (NO), and tumor necrosis factor-α (TNF-α) levels have been estimated.

RESULTS: Carrageenan induced a significant rat paw edema and inflammation noticed 1 h post-injection as well as an increase of MDA, NO, and TNF-α in the inflamed skin tissues compared to the control group. Systemic and topical administration of Egb-761 and dexamethasone resulted in a significant reduction in carrageenan-induced rat paw edema. They reduced the tissue levels of MDA, NO, and TNF-α. Dexamethasone showed a little bit superior anti-inflammatory and antioxidant efficacy over Egb-761.

CONCLUSION: Our findings indicate the possibility of the therapeutic value of Egb-761 for alleviation of local inflammation by attenuating the increased MDA, NO and TNF-α levels.

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