Acinetobacter baumannii became a serious endemic and widespread pathogen responsible for causing nosocomial infections due to restricted treatment options. This study was conducted to evaluate the role of both antibiotic resistance and genetic pattern in infection caused by MBLs resistance A. baumannii isolated in Baghdad hospitals. Finally, developing selective media in order to detect multidrug resistance A. baumannii isolates according to colony shape appearance changing. Collected 124 isolates from various clinical and environmental sources. Biofilm Formation was detected, Antibiotic sensitive for 21 antibiotic discs were determined, MDR index calculated, PCR was performed to investigate MBLs genes bla (IMP2,
Escherichia coli remain significant problem caused urinary tract infection; Results indicated a higher urinary tract infection in women compared with men across all age groups. Phylogenetic analysis showed that majority of uropathogenic isolated E. coli belong to phylogroup B2 followed by D. The isolates showed the existence of the first type of fimbriae, maximum P fimbriae positive isolates 74/94 (80.43%) were widely correlating with common UTI. colony adhesion factor (CAFÐ) represented in 40 (43.47%) and 5 (5.43%) colony adhesion factor (CAFØ). Six major clusters (A-F) were identified depending on antibiograms typing. B2 is the most phylogenetic type showed wide range of resistant from 1 to 12 resistant to antibiotic of remaining strains. 14 isolates (15.21%) were detected as ESâLs producers and 30 isolates (32.60%) of them were AmpC b-lactamases producers. prevalence of virulent genes occurred in 51 papC (55.43%), 66 fim H (71.73%) and SfaDE detected in low occurrence 21(22.82). These results emphasize the low or moderate resistant to antibiotics focused in isolates with high genetic content .These results indicated that the greater the resistance to antibiotics the less the genetic expression of the virulence factors, this confirms the reverse relationship. The genes required for uropathogenicity in a single isolate may not reflect virulence in another isolate. Pathogenicity is a multi-factor characteristic, the result of adhesion-related genes which interact in separate set in various genetic backgrounds.
Recently, Pseudomonas aeruginosa infections proportions have increased significantly. Molecular typing and virulence analysis are good techniques, which can lead us to know P. aeruginosa infections. P. aeruginosa isolates were identified by using molecular method (16S rDNA gene) via PCR technique for accurate identification. The highest percent 41.26% of P. aeruginosa bacteria was found in the burn infections followed by 28.57% in wound swabs, 17.46% in ear discharge and lowest percentage were obtained from sputum samples. All isolates classified into six groups (A-F) according to classes of antibiotics. Of the 63 bacterial isolates, 100% were resistant to carbencillin, whereas 31.74% were resistant to ticarcillin and all isolates susceptible to imipenem. In addition all of clinical isolates indicated multidrug resistant (MDR) patterns, the highest rate of MDR was observed with pattern C these isolates were able to resist (9-12) antibiotics. All isolates were typed genotypically by using two methods of amplification, ERIC and RAPD-PCR. The results of the ERIC-PCR typing of P. aeruginosa bacteria that 96.82% showed amplification bands ERIC-PCR also revealed 17 groups of genotypes (A-R) and 4 unique isolates. The results of RAPD-PCR fingerprint revealed 12 groups of genotypes (A-M) of 40–90% similarity according to coefficient values and 4 unique isolates, except 7.93% were untypeble. QS genes (lasI, lasR, rhlI, rhlR), screen showed all isolates 100% were positive for one or more QS genes, in the other hand 82.53% carrying lasI, lasR, rhlI, and rhlR, while the 15.87% carrying lasI, rhlI, and rhlR and 1.58% carrying lasI, lasR, and rhlR genes. ERIC genotyping significantly correlated resistance patterns but not with virulence control QS genes. RAPD genotyping significantly correlated with source of infection, resistance patterns and virulence control QS genes. These results can help initial diagnosis MDR P. aeruginosa outbreaks associated with specific genotyping patterns.
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