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In this work 89 Aeromonas hydrophila and 88 Pseudomonas aeruginosa isolates was recovered from university hospital sewage in Turkey. The resistance of these bacterial isolates to 11 different cephalosporin classes’ antibiotics belonging four generations and to 4 heavy metals was investigated. Among the A. hydrophila isolates it found high incidence of resistance to cefazolin (98.9%), cefaclor (98.9%) and cefprozil (97.8%). Resistance to cefoxitin (30.3%), cefepime (30.3%) and ceftazidime (31.4%) found relatively low. Among the P. aeruginosa isolates resistance to cefazolin (100%), cefuroxime (100%), cefoxitin (100%), cefaclor (100%), cefprozil (98.9%), cefixime (96.6%) and ceftizoxime (85.2%) was found very high. In contrast, none of the P. aeruginosa isolates showed resistance to ceftazidime, cefepime and cefpirome. Among the A. hydrophila isolates multiple antibiotic resistance (MAR) index ranged from 0.27 to 1.0 and among the P. aeruginosa MAR index ranged from 0.46 to 0.72. All of the A. hydrophila and P. aeruginosa isolates showed resistance to cadmium. Whereas, A. hydrophila and P. aeruginosa isolates showed a low resistance to lead of 6.7% and 2.2% respectively. Results indicate that both of the species are easily recovered hospital sewage and these species are gained resistance different generation of cephalosporins and heavy metals. |
