Pharmacological evaluation for anti-asthmatic and anti-inflammatory potential of Woodfordia fruticosa flower extracts.

Autor: Hiralal Ghante, Mahavir, Bhusari, Kishore P., Duragkar, Nandkishore J., Ghiware, Nitin B.
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Zdroj: Pharmaceutical Biology; Jul2014, Vol. 52 Issue 7, p804-813, 10p
Abstrakt: Context: Woodfordia fruticosa Kurz. (Lythraceae) flowers are ethnopharmacologically acclaimed in the Indian medicinal system to treat asthma. Objective: To evaluate W. fruticosa flower extracts for anti-asthmatic effect. Materials and methods: Ethyl acetate, acetone, methanol, and hydro-alcohol extracts of W. fruticosa flowers were obtained successively and standardized. Ability of extracts to stabilize free radicals and compound-48/80-induced mast cell degranulation was evaluated. In vitro anti-inflammatory potential of extracts at 100 and 200 µg/ml by membrane stabilization and in vivo inhibition of rat paw edema up to 5 h (100 and 200 mg/ml; p.o.) was evaluated. In vitro bronchorelaxant effect was examined against histamine- and acetylcholine (1 µg/ml; independently)-induced guinea pig tracheal contraction. Extracts were evaluated for bronchoprotection ( in vivo) ability against 0.1% histamine- and 2% acetylcholine-induced bronchospasm in guinea pigs at 100 and 200 mg/ml; p.o. Results: Standardization studies revealed that the methanol extract exhibited highest polyphenolic (62.66 GAE), and flavonoid (6.32 RE) content and HPLC fingerprinting confirmed the presence of gallic acid ( Rt 1.383). IC50 values for DPPH scavenging and metal chelation by the methanol extract were 40.42 and 31.50 µg/ml. Methanol and ethyl acetate extracts at 100 µg/ml exhibited 06.52 and 07.12% of histamine release. Methanol, ethyl acetate, and hydro alcohol extracts at 200 mg/kg demonstrated 32.73, 29.83, 26.75% and 32.46, 9.38, 26.75% inhibition of egg albumin and carrageenan-induced inflammation, respectively. Methanol extract exhibited 100% bronchorelaxation and 48.83% bronchoprotection. Conclusion: Woodfordia fruticosa flower (WFF) extracts exhibited anti-asthmatic effect by demonstrating bronchoprotection, bronchorelaxation, anti-inflammatory, antioxidant, and mast cell stabilization ability. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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