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Research Paper | Microbiology | Iraq | Volume 3 Issue 8, August 2014
Using of astA and uidA Genes Characterization in Detection of Escherichia coli Prevalence from Human Gallstone
Abdalnabi J. Abid | Sama J. AL-zuwainy
Abstract: A total of 150 Gallstones samples were collected from patients undergoing cholecystectomy at the general teaching Hilla Hospital from November 2011 to June 2012. All samples were surveyed and examined for the presence of the Escherichia coli and differentiate it from other bacterial species. The Bacterial isolates were identified by using morphological and biochemical diagnostic investigations methods; Samples were cultured on Eosin Methylene Blue Agar (EMB), incubated at 37C for 24 hrs, and then cultured on MacConkey Agar ( MAC).50 bacterial isolates were identified as Escherichia coli. By using traditional biochemical tests. The Bacterial isolates were further identified by using Single Polymerase Chain Reaction (SPCR) technique for the presence or absence of 2 genes ( astA, uidA) that encode for main virulence factors to diagnose E. coli isolated from Gallstones by using specific primers for these genes. Appearance of ustA and uidA in E. coli that isolated from gallstone confirmed the importance of these genes in gallstone formation through their ability to encoded B-glucuronidase.
Keywords: gallstone, Ecoli, uidA, astA, PCR
Edition: Volume 3 Issue 8, August 2014,
Pages: 935 - 939
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