ژنوتایپینگ سویه‌های سالمونلا انتریکا سروتایپ انتریتیدیس جداشده از نمونه‌های بالینی به روش پالس‌فیلد ژل الکتروفورزیس

نوع مقاله : مقاله های پژوهشی

نویسندگان

1 کارشناس ارشد، مرکز تحقیقات بیولوژی مولکولی، دانشگاه علوم پزشکی بقیه‌اله (عج)، تهران، ایران

2 دانشیار، مرکز تحقیقات بیولوژی مولکولی، دانشگاه علوم پزشکی بقیه‌اله (عج)، تهران، ایران

چکیده

مقدمه: شیوع عفونت‌های ناشی از سالمونلا انتریکا سروتایپ انتریتیدیس در بسیاری از کشورهای توسعه‌یافته و در حال توسعه در حال افزایش می‌باشد. هدف از این مطالعه بررسی ارتباط ژنتیکی بین سویه‌های سالمونلا انتریتیدیس با استفاده از روش پالس‌فیلد ژل الکتروفورزیس بود.روش‌ها: در یک مطالعه‌ی توصیفی، طی سال‌های 89-1387 طبق روش استاندارد، سویه‌های سالمونلا انتریکا از بیماران مشکوک به عفونت با سالمونلا از چند بیمارستان در تهران جمع‌آوری گردید. سویه‌های سالمونلا انتریتیدیس با روش‌های استاندارد میکروبی و سرولوژیکی شناسایی گردیدند. ارتباط ژنتیکی میان سویه‌های مورد بررسی با استفاده از روش پالس فیلد ژل الکتروفورزیس مورد آنالیز قرار گرفت.یافته‌ها: 40 ایزوله‌ی سالمونلا انتریکا سروتایپ انتریتیدیس شناسایی شدند و وارد مطالعه گردیدند. نتایج حاصل از پالس‌فیلد ژل الکتروفورزیس و مشاهده‌ی تشابه باندی ژنتیکی نشان داد که 32 ایزوله (80 درصد) در کلاستر A و 8 ایزوله (20 درصد) در کلاستر B، که الگوهای ژنتیکی یکسانی داشتند، قرار گرفتند. بر اساس الگوهای پالس‌فیلد مشاهده‌شده، الگویی که بیشترین تکرار را داشت الگوی 9 باندی بود که در 28 ایزوله (70 درصد) و در کلاستر A قرار گرفت.نتیجه‌گیری: نتایج به دست‌آمده در این مطالعه، حکایت از آن داشت که سویه‌های در گردش سالمونلا انتریکا سروتایپ انتریتیدیس در بیمارستان‌های مورد مطالعه در تهران، کلون‌هایی با ژنوتایپ نزدیک به یکدیگر داشتند.

کلیدواژه‌ها


عنوان مقاله [English]

Genotyping of Salmonella Enterica Serovar Enteritidis Strains Isolated from Clinical Samples by Pulsed-Field Gel Electrophoresis (PFGE)

نویسندگان [English]

  • Zeinab Ahmadi 1
  • Reza Ranjbar 2
  • Meysam Sarshar 1
1 Molecular Biology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
2 Associate Professor, Molecular Biology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
چکیده [English]

Background: The infections caused by Salmonella enterica serovar enteritidis (Salmonella enteritidis) have been increasing in developed and developing countries. The aim of this study was to investigate the genetic relationship between the strains of Salmonella enteritidis.Methods: In a descriptive study from 2008 to 2010, clinical Salmonella enteritidis strains were collected from the patients referred to different hospitals in Tehran. The strains identified by biochemical and serological methods. Genetic relationships between the isolates were investigated using pulsed field gel electrophoresis (PFGE) method.Findings: Of 40 Salmonella enteritidis isolated strains, two PFGE profiles were obtained which among them, 32 (80%) and 8 (20%) of isolates belonged to cluster A and cluster B, respectively. Based on PFGE patterns, 28 (70%) strains exhibited nine bands and were belonged to cluster A.Conclusion: The result of this study indicated that isolated Salmonella enteritidis strains belonged to the closed clones.

کلیدواژه‌ها [English]

  • Salmonella enteritidis
  • Genotyping
  • Pulsed-field gel electrophoresis
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