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THE INFLUENCE OF HEAVY METALS AND ANTIMICROBIAL ON STAPHYLOCOCCUS AUREUS AND PSEUDOMONAS AEROGINOSA ISOLATES | ||
| Basrah Journal of Veterinary Research | ||
| Article 1, Volume 9, Issue 2, 2010, Pages 22-38 PDF (0 K) | ||
| DOI: 10.33762/bvetr.2010.55047 | ||
| Author | ||
| Mohammed H. Khudor | ||
| Abstract | ||
| Two isolates of Staphylococcus aureus and Pseudomonas aeroginosa of bacteria were exposed to different concentrations ( 5 , 10 or 25 mg /l )of heavy metals ions ( Silver Ag2+ , Cobalt Co2+ or Lead Pb2+) for different exposure periods ( 0 , 1, 2, 24 and 48 hrs.) .The results showed that the inhibitory effect of these metals on the growth of the two isolates were in the following sequences :- Pb < Co < Ag Some of these metals caused an elongation of lag phase in liquid medium for these isolates . Whene antibiotic discs ( chloramphenicol 30 mcg , clindamycin 2 mcg , erythromycin 15 mcg , gentamycin 10 mcg ,tetracyclin 30 mcg and vancomycin 30 mcg ) were added to solid medium which was previously supplemented with the above heavy metals ions , a synergestics effect was observed between antibiotics and heavy metals ions ( specially silver ions at 25 mg/ l )to increase the inhibition zone significantly ( P < 0.01 ) for both isolates . | ||
| Keywords | ||
| Staphylococcus aureus; gentamycin; Chloramphenicol | ||
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