Antimicrobial and general toxicity activities of Gymnosperma glutinosum: A comparative study

详细信息    查看全文

• 作者：M. Canales ; T. Herná ; ndez ; R. Serrano ; L.B. Herná ; ndez ; A. Duran ; V. Rí ; os ; S. Sigrist ; H.L.H. Herná ; ndez ; A.M. Garcia ; O. Angeles-Ló ; pez ; et al.
• 关键词：Antibacterial ; Antifungal ; Asteraceae ; General toxicity ; Gymnosperma glutinosum
• 刊名：Journal of Ethnopharmacology
• 出版年：2007
• 出版时间：21 March 2007
• 年：2007
• 卷：110
• 期：2
• 页码：343-347
• 全文大小：152 K

文摘

Gymnosperma glutinosum (Spreng.) Less (Asteraceae) is an important, and an effective herbal medicine which is wide used for the treatment of diarrhoea in Mexico. We examined and compared the antibacterial and antifungal activities through the dilution method and for general toxicity activity by the brine shrimp lethality assay of two samples of Gymnosperma glutinosum from two localities of Mexico: San Rafael-Coxcatlan (Puebla State) and Tepeji del Rio (Hidalgo State). In addition, two bioactive compounds (−)-17-hydroxy-neo-clerod-3-en-15-oic acid (1) and 5,7-dihydroxy-3,6,8,2′,4′,5′-hexamethoxyflavone (2) were isolated. From the hexane extract from both places was obtained a MeOH partition M₂. M₂ of Tepeji del Rio showed the least MICs (<125 μg/ml) in the majority of the bacterial strains. Sarcina lutea was the most sensitive bacteria (MIC< 125 μg/ml). The hexane extract of both localities showed antifungal activity against all tested fungi. San Rafael's hexane extract was significant more activity than Tepeji del Rio. Aspergillus niger (IC₅₀ = 23.79 μg/ml) and Trichophyton mentagrophytes (IC₅₀ = 90.25 μg/ml) were the more sensitive fungus strains. The strongest general toxicity activity was observed with the M₂ partition from Tepeji del Rio (LC₅₀ = 503.7 μg/ml). The results obtained in this investigation, showed differences between the antimicrobial activities of the samples of plants collected in San Rafael (Puebla) and Tepeji del Rio (Hidalgo).