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| 1 | Antimicrobial metabolites from marine microorganisms显示文摘Marine ecological niches have recently been described as 'particularly promising' sources for search of new antimicrobials to combat antibiotic-resistant strains of pathogenic microorganisms. Marine organisms are excellent sources for many industrial products, but they are partly explored. Over 30 000 compounds have been isolated from marine sources. Bacteria, fungi, and cyanobacteria obtained from various marine sources secret several industrially useful bioactive compounds, possessing antibacterial, antifungal, and antimycobacterial activities. Sustainable cultivation methods for promising marine organisms and biotechnological processes for selected compounds can be developed, along with the establishment of biosensors for monitoring the target compounds. The semisynthetic modifications of marine-based bioactive compounds produce their new derivatives, structural analogs and mimetics that could serve as novel lead compounds against resistant pathogens. The present review focuses on promising antimicrobial compounds isolated from marine microbes from 1991-2013. | Prasanna Habbu Vijayanand Warad Rajesh Shastri Smita Madagundi Venkatrao H. kulkarni | 2016 | Chinese Journal of Natural Medicines2016，14，2： | 5 |
| 2 | Anti-dermatophytic activity of marine sponge,Sigmadocia carnosa(Dendy)on clinically isolated fungi显示文摘Objective:To screen the anti-fungal effects and find out the active metabolites from sponge, Sigmadocia carnosa(S.carnosa) against four dermatophytic fungi.Methods:The methanol,ethyl acetate and acetone extract of marine sponge,S.carnosa was examined against Trichaphyton mentagrophytes(T.mentagrophytes),Trichophyton rubrum(T.rubrum),Epidermophyton floccosum(E.floccosum) and Microsporum gypseum(M.gypseum) and qualitative analysed to find out the active molecules.Results:The methanol extract of sponge was expressed significant activity than ethyl acetate and acetone.The minimum inhibitory concentration(MIC) of methanol extract of sponge that resulted in complete growth inhibition of T.mentagrophytes,T.rubrum, E.floccosum and M.gypseum were found to 125,250,250 and 250 μg/mL respectively.But, 100%inhibition of fungal spore germination was observed in T.mentagrophytes at 500 μg/mL concentration followed by T.rubrum,E.floccosum and At.gypseum at 1000 μg/mL concentration. Other two extracts showed weak anti spore germination activity against the tested dermatophyte fungi.Methanol extracts showed presence of terpenoids,steroids,alkaloids,saponins and glycosides.Conclusion:Based on the literature,this is the first study which has conducted to inhibit the growth and spore germination of dermatophytic fungi with S.carnosa.Further research also needs to purify and characterize the secondary metabolites from the sponge,5.carnosa for the valuable source of novel substances for future drug discovery. | NB Dhayanithi TT Ajith Kumar M Kalaiselvam T Balasubramanian N Sivakumar | 2012 | Asian Pacific Journal of Tropical Biomedicine2012，2，8： | 0 |
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