PLASMID MEDIATED ANTIBIOTICS RESISTANCE PROFILE AND NUCLEOTIDE SEQUENCE OF A NOVEL BROAD SPECTRUM β-LACTAMASE FROM UROPATHOGENIC ESCHERICHIA COLI BY

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dc.contributor.authorNTIEJUMOKWU, SUNDAY
dc.date.accessioned2014-02-06T11:15:58Z
dc.date.available2014-02-06T11:15:58Z
dc.date.issued1998-07
dc.descriptionA THESIS SUBMITTED TO THE POSTGRADUATE SCHOOL, AHMADU BELLO UNIVERSITY, ZARIA, IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD OF DOCTOR OF PHILOSOPHY IN PHARMACEUTICAL MICROBIOLOGYen_US
dc.description.abstractABSTRACT Genetic determinants responsible for bacterial resistance to commonly used and newly introduced antibiotics in Nigeria were investigated. Of the 150 E. coli isolates from urinary tract infections surveyed, 149 (99%) were resistant to at least two different antibiotics, and 131 (87%) were resistant to Unasyn(Ii). The commonest resistance pattern was combined resistance to ampicillin, ampicillin/sulbactam, cefuroxime, tetracycline, trimethoprim/ sulfamethoxazole, and sulfamethoxazole Seventy two (48%) of the tested isolates transferred resistant plasmids to a recipient strain, E. coli K12CV601. Results showed that urinary tract infection is caused by genetically unrelated strains of E. coli in the geographical regions of this country studied. In this study a high incidence (87.3%) of resistance to ampicillin/sulbactam was observed in UTI isolates from this country Whereas there was complete sensitivity to amoxycillin/clavulanate and tiearcillin/elavulanate, the combination of ampicillin and sulbactam, which combines a β-lactam antibiotic with a β-lactamase inhibitor was grossly ineffective. This study indicates that the attempt at using sulbactam as a component of Unasyn(R) in dealing with all types of β-lactamasc-mediatcd antibiotic resistance in Nigeria is only marginally effective since only 16 out of 147 (1 1%) isolates resistant to ampicillin were sensitive to the combination. The ampicillin/sulbactam combination would be expected to be more effective for bacterial infections not involving E. coli producing extended broad spectrum bcta-lactamase.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/452
dc.language.isoen_USen_US
dc.subjectPLASMIDen_US
dc.subjectMEDIATEDen_US
dc.subjectANTIBIOTICSen_US
dc.subjectRESISTANCEen_US
dc.subjectPROFILE ANDen_US
dc.subjectNUCLEOTIDE SEQUENCEen_US
dc.subjectNOVELen_US
dc.subjectBROAD SPECTRUMen_US
dc.subject-LACTAMASEen_US
dc.subjectFROMen_US
dc.subjectUROPATHOGENICen_US
dc.subjectESCHERICHIA COLIen_US
dc.titlePLASMID MEDIATED ANTIBIOTICS RESISTANCE PROFILE AND NUCLEOTIDE SEQUENCE OF A NOVEL BROAD SPECTRUM β-LACTAMASE FROM UROPATHOGENIC ESCHERICHIA COLI BYen_US
dc.typeThesisen_US
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