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Antibiotic resistant Esherichia coli strains from seafood and its susceptibility to seaweed extracts

Asian Pacific Journal of Tropical Medicine 2010年第12期3卷 977-981页

作者： Subramanian Kumaran Balaraman Deivasiganiani kumarappan alagappan Mannikam Sakthivel Rajamani Karthikeyan Faculty of Marine Sciences Annamalai UniversityParangipettaiTamil NaduIndia

Objective:To determine the prevalence and antibiotic resistance of Escherichia coli(E. coli),in seafood obtained from Cuddalore and Parangipettai fish landing ***,to identify the susceptibility of *** against predominant seaweeds red alga Kappaphycus alvarezii(***) and brown alga Padina boergessenii(***) extracts as sulfated polysaccharides and polyphenols ***:A total of 48 samples(Two stations Cuddalore and Parangipettai,Tamil Nadu,India).Sampling area are fish landing centre where fishes caught from sea and estuary,seafood processing plants(packing and ice packed fishes) and local fish markets(fish samples).After isolation totally 80 strains were analyzed for its antimicrobial resistance and sensitivity against commercially 10 *** ampicillin resistant *** CE21 was identified through molecular techniques as I6S rDNA sequencing. Two seaweeds *** and *** were screened lor antibacterial activity against 12 antibiotic resistant *** ***:Totally 48 swabbed samples from two different fish handling area were characterized for total bacterial and *** ***,the *** strains were isolated from fish local market and seafood processing plants before and after packaging *** that maximum 56.25%strains were resistant to ampicillin and the minimum 2.5%strains were resistant to ***,the *** CE21 was identified through molecular techniques ***(GenBank accession number GU065251),The MIC value for polyphenol extract was slightly less than sulfated *** strain isolated from Parangipettai was considerably increased MIC value that ***: The polyphenol and sulfated polysaccharides showed promising inhibitory response against all antimicrobial resistant *** strains and in particular the inhibitory response of ampicillin resistant ***.

关键词： Antibiotic resistant E.coli Antibacterial activity Seaweed extract Seafood

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Antibacterial potential of sponge endosymbiont marine Enterobacter sp at Kavaratti Island,Lakshadweep archipelago

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Asian Pacific Journal of Tropical Medicine 2012年第2期5卷 142-146页

作者： Mohan Gopi Subramanian Kumaran Thipparamalai Thangappanpillai Ajith Kumar Balaraman Deivasigamani kumarappan alagappan Srinivasan Guru Prasad CAS in Marine Biology Faculty of Marine SciencesAnnamalai UniversityParangipettai- 608 502Tamil NaduIndia CMLRE Field Research Station Agatti IslandLakshadweep- 682 553India

Objective:To isolate antibacterial potential of sponge endosymbiotic bacteria from marine sponges at Lakshadweep *** to identify the potent bacteria by 16s rDNA sequencing and determine the antibacterial activity against clinical pathogens by ***: Sponge samples was collected from sub-tidal habitats at Kavaratti Island and *** endosymbiotic bacteria were isolated and selected potential bacteria which show antibacterial activity in preliminary screening against clinical pathogens Staphylococcus aureus(***), Escherichia coli(***),Salmonella typhi(***),Klebsiella pneumoniea(***) and Streptococcus *** disc diffusion *** crude extracts of potential bacteria LB3 was tested against clinical pathogens by *** LB3 strain was identified by 16s rDNA sequencing, 1111 bp was submitted in NCBI(HQ589912) and constructed phylogenetic ***:Sponge sample was identified as Dysidea granulosa(***) and potential bacteria LB3 identified as Enterobacter sp *** screening of sponge isolates against clinical pathogens,LB3 strain was selected as potential producer of secondary metabolites and crude extract was implies on MIC of LB3 have confirmed with lowest concentration of 5.0 mg/mL in broth medium influence of crude extract on growth inhibitory activity after 5 h of incubation period and completed the inhibitory activity at 15 ***:The present study concluded that phylogenetic analysis of endosymbiotic bacteria Enterobacter sp from sponge *** of Lakshadweep islands showed significant antibacterial activity against clinical bacterial pathogens.

关键词： Lakshadweep Sponge 16s rDNA Clinical pathogens

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Immune response of shrimp(Penaeus monodon)against Vibrios furnissii pathogen

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Journal of Coastal Life Medicine 2014年第4期 281-286页

作者： Kumaran Subramanian Deivasigamani Balaraman Dhayanithi Nagarajan Balachandran Rajasekar Thirunavukarasu Suresh Gopal Pugazhvendan Sampath Renuka alagappan kumarappan Sri Sankara Arts and Science College (Affiliated to Madras University)EnathurKanchipuramTamil NaduIndia Annimalai University Centre of Advanced Study in Marine Biology Annamalai UniversityParangipettaiTamil NaduIndia Centre for Biotechnology Anna UniversityChennai–600025Tamil NaduIndia Department of Zoology DDE wingAnnamalai UniversityTamil NaduIndia

Objective:To analyse experimental infection and immune system of shrimp(Penaeus monodon)against Vibrios furnissii(***).Methods:Experimental animals were collected and acclimatized by maintaining specific temperature,pH and salinity to avoid *** were experimentally infected with *** and their immune responses were *** the infection all the shrimps were monitored for any symptoms,death rate in 0,12,24,36,48 *** haemolymph were collected and tetrahydrocannabinol,phenol oxidase,nitroblue tetrazolium and lysozyme were monitored in every 12 h at the interval of 48 ***:Shrimps infected by live *** had showed gradual increase in tetrahydrocannabinol,phenol oxidase activity,nitro-blue-tetrazolium and lysozyme activity comparing with the killed and ***:The live *** had showed infection in the shrimp immune *** live *** shows infection in experimental shrimps comparing with killed *** the *** in nature cause the infection in shrimp Penaeus monodon immune *** report could be applied to control of the infection in shrimp hatchery.

关键词： Shrimp Vibrios furnissii Immune response Pathogenesis

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