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Articles by Tha. Thayumanavan
Total Records ( 2 ) for Tha. Thayumanavan
  R. Subashkumar , Tha. Thayumanavan , C. Thilagavathy G. Vivekanandhan , K. Savithamani and P. Lakshmanaperumalsamy
  A total of 105 milk samples were analysed for Aeromonas hydrophila and 17.14% of the milk samples were found to be contaminated with A. hydrophila. Out of the milk samples, 30.5% were found to be of poor quality. The A. hydrophila strains were resistant to bacitracin, cefazolin and novobiocin and sensitive to gentamycin, kanamycin, neomycin and polymyxin-B. About 94.4% of strains were found to be haemolysin producers. Proteolytic activity was exhibited by all the isolates. The environmental factors such as NaCl and pH were influencing the growth of the A. hydrophila isolates. None of the RAPD and ERIC profiles were found identical. This clearly revealed the wide genetic heterogeneity among the strains tested.
  R. Subashkumar , Tha. Thayumanavan , G. Vivekanandhan and P. Lakshmanaperumalsamy
  Of the samples examined, 25.7% of children diarrhoeal samples harbored Aeromonas spp. Among them 16.7% were A. hydrophila. Though all the isolates were resistant to all β-lactam antibiotics (except carbapenem) and non β-lactam antibiotics tested and further studied for the presence of plasmid in all the strains. The majority of isolates were resistant to clarithromycin and vancomycin. Thirty one (77.5%) of the 40 isolates harbored plasmids, with sizes ranging from 2.6 to 15.2 kb. These results indicate that multiple antibiotic resistant and genetically diverse aeromonads are easily available among the children diarrhoeal samples collected from the study area. It indicates that the practice of frequent application of therapeutics for the treatment of diseases might have enhanced occurrence of drug resistance and carrying the resistant plasmids.
 
 
 
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