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Isolation of a small molecule with anti-MRSA activity from a mangrove symbiont Streptomyces ***-1 and its biomedical studies in Zebrafish embryos

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Asian Pacific Journal of Tropical Biomedicine 2011年第5期1卷 341-347页

作者： Rajaretinam Rajesh Kannan Appadurai Muthamil Iniyan Vincent Samuel Gnana Prakashy International Centre for Nanobiotechnology(ICN) Centre for Marine Science and Technology(CMST)Manonmaniam Sundaranar University Xpression Biotek Pvt.Ltd PammamMarthandamKanyakumari Dist

Objective:The aim of the present study was to isolate the anti-MRSA(Methicillin Resistant Staphylococcus aureus)molecule from the Mangrove symbiont Streptomyces and its biomedical studies in Zebrafish ***:MRSA was isolated from the pus samples of Colachal hospitals and confirmed by amplification of mecA ***-MRSA molecule producing strain was identified by!6s rRNA gene ***-MRSA compound production was optimized by Solid State Fermentation(SSF)and the purification of the active molecule was carried out by TLC and *** inhibitory concentration and LC_(50)were calculated using Statistical software *** Biomedical studies including the cardiac assay and organ toxicity assessment were carried out in ***:The bioactive anti-MRSA small molecule A,was purified by TLC with Rf value of 0.37 with 1.389 retention time at *** Inhibitory Concentration of the purified molecule A_2 was 30μg/mL but,the inhibitory concentration of the MRSA in the infected embryo was 32-34μg/mL for TLC purified molecule A,with LC_(50)mean value was61.504μg/*** toxicity was assessed in 48-60μg/mL by observing the physiological deformities and the heart beat rates(HBR)of embryos for anti MRSA molecule showed the mean of 41.33-41.67 HBR/15 seconds for 40μg/mL and control was 42.33-42.67 for 15 seconds which significantly showed that the anti-MRSA molecule A_2 did not affected the ***:Anti-MRSA molecule from Streptomyces sp PVRK-I was isolated and biomedical studies in Zebrafish model assessed that the molecule was non toxic at the minimal inhibitory concentration of MRSA.

关键词： Methicillin resistant Staphylococcus aureus Small molecule Mangrove RP-HPLC Streptomyces Cardiac assay Organogenesis biochemial study Zebrafish embryo Minimal inhibitory concentration

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