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Iranian Journal of Medical Sciences، جلد ۴۱، شماره ۵، صفحات ۳۹۹-۰
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عنوان انگلیسی SDS-PAGE Analysis of the Outer Membrane Proteins of Uropathogenic Escherichia coli Isolated from Patients in Different Wards of Nemazee Hospital, Shiraz, Iran
چکیده انگلیسی مقاله Background: Outer membrane proteins (OMPs) constitute the main structure and about half of the cell wall of Gram-negative bacteria. The OMPs of Escherichia coli (E. coli) play an important role in its drug resistance. Previous studies have shown that the OMPs of E. coli enhance its pathogenic effects by helping the bacterium to evade the immune defense and promote its adsorption to host cells. We sought to compare E. coli isolates collected from different hospital wards and to perform a primary investigation of the association between the serotypes and profiles of their OMPs. We also aimed to detect the diversity of the E. coli isolates from the hospitalized patients. Methods: A total of 115 isolates of E. coli were collected from patients hospitalized in Nemazee Hospital, Shiraz, Iran. After biochemical and serological tests, OMPs were extracted by using glass beads and N-Lauroylsarcosine sodium. OMP typing was done by 10% SDS-PAGE and Coomassie brilliant blue staining. In terms of the number of protein bands, OMP-I was detected with 2 bands, OMP-α with 3 bands, and OMP-β with1 band. Results: Of the 115 isolates, 103 were OMP-I and 12 were OMP-α; none of the isolates belonged to OMP-β. Our statistical analyses showed a relationship between OMP patterns and other factors, including hospital wards and source of samples. Serotyping showed that the majority of the isolates were O128. Conclusion: Our results demonstrated some similarities between the OMP band patterns of the analyzed groups of E. coli. Of all the OMPs in the isolates from the hospitalized and outpatient department patients, OmpA and OmpC were the most prevalent proteins in the outer membrane of the studied uropathogenic E. coli.
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نویسندگان مقاله بهزاد دهقانی | behzad dehghani
department of bacteriology and virology, school of medicine, shiraz university of medical sciences, shiraz, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز (Shiraz university of medical sciences)

محمد mottamedifar | mohammad mottamedifar
department of bacteriology and virology, school of medicine, shiraz university of medical sciences, shiraz, iran; and shiraz hiv aids research center shiraz university of medical sciences, shiraz, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز (Shiraz university of medical sciences)

حسین خوشخرام رودمعجنی | hossein khoshkharam roodmajani
department of bacteriology and virology, school of medicine, shiraz university of medical sciences, shiraz, iran;

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز (Shiraz university of medical sciences)

امیر حسن زاده | amir hassanzadeh
department of bacteriology and virology, school of medicine, shiraz university of medical sciences, shiraz, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز (Shiraz university of medical sciences)

کامیار زمردیان | kamyar zomorrodian
basic sciences in infectious disease research center, school of medicine, shiraz university of medical sciences, shiraz, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز (Shiraz university of medical sciences)

امیر رحیمی | amir rahimi
department of molecular medicine, school of advanced medical science and technology, shiraz university of medical sciences, shiraz, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز (Shiraz university of medical sciences)

نشانی اینترنتی http://ijms.sums.ac.ir/index.php/IJMS/article/view/1792
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