بهداشت و بیماری‌های عفونی دام

بهداشت و بیماری‌های عفونی دام

جستجوی ژنومی کوکسیلا بورنتی در نمونه‌های شیر گوسفندان خرم‌آباد و پلدختر، استان لرستان

نوع مقاله : مقاله پژوهشی

نویسندگان
گروه میکروبیولوژی و بهداشت مواد غذایی، دانشکده دامپزشکی، دانشگاه لرستان، خرم آباد، ایران
چکیده
مقدمه و هدف: مطالعه حاضر به منظور جستجو و ردیابی مولکولی و ژنومی کوکسیلا بورنتی در نمونه‌های شیر خام جمع‌آوری شده از گوسفندان در سطح غرب ایران (استان لرستان و منطقه خرم آباد و پل دختر) انجام شده است.
روش کار: این کار بصورت مقطعی و توصیفی انجام شده است. تعداد کلی 150 نمونه شیر به طور تصادفی از گله‌های گوسفند متعلق مناطق (خرم‌آباد، پلدختر) استان لرستان، جمع‌آوری شد. نمونه‌های شیر در فصل زمستان سال 1400 براساس منطقه جغرافیایی جمع‌آوری و همچنین سن حیوانات نیز ثبت گردید. از همه نمونه‌های شیر گوسفندان DNA استخراج شد. سپس برای تشخیص کوکسیلا بورنتی براساس ژن ترانسپوزونی IS1111 از واکنش Nested-PCR استفاده شده است.
یافته‌ها: نتایج: نتایج بدست آمده از تکثیر ترانسپوزونی IS1111 نشان داده است که 4 درصد (95 درصد CI: 55- 7/0 درصد) از نمونه-های شیر گوسفند مورد بررسی، از ژنومی آلوده به کوکسیلا بورنتی بودند. و همچنین تفاوت معنی‌داری در دفع کوکسیلا بورنتی در شیر، بین مناطق پلدختر و خرم‌آباد وجود نداشت.
نتیجه‌گیری: براساس یافته‌های این مطالعه می‌توان به این نتیجه رسید که شیر گوسفند می‌تواند به عنوان یکی از منابع مهم در انتقال باکتری کوکسیلا بورنتی به میزبان‌های بعدی در نظر گرفته شود. بنابراین، به دلیل ماندگاری بالای کوکسیلا بورنتی به علت وجود فرم شبه اسپور، خطر انتقال کوکسیلا بورنتی از طریق شیر خام و محصولات لبنی پاستوریزه نشده قابل اغماض نیست. بنابراین، شیر گوسفند باید به عنوان یک عامل مهم در اپیدمیولوژی تب کیو و سلامت عمومی در مناطق پلدختر و خرم آباد استان لرستان در نظر گرفته شود.
کلیدواژه‌ها
موضوعات

عنوان مقاله English

Genomic Detection of Coxilla burnetii in the milk samples of Khoramabad and Poldokhtar sheep, Lorestan province.

نویسندگان English

Negin Faraji
Mahmood Mohammadi
Department of Microbiology and Food Hygiene, Faculty of Veterinary Medicine, Lorestan University, Khorramabad, Iran.
چکیده English

Introduction and Objective: The present study was conducted to molecularly search for Coxiella burnetii in raw milk samples collected from cows in western Iran (Lorestan Province).
Materials and methods: This was a cross-sectional and descriptive study. A total of 150 milk samples were collected from sheep herds in the regions of Khoramabad and Poldokhtar in Lorestan Province. In the winter of 2021, a series of milk samples were collected, with the geographical area and the age of the animals being recorded. Extraction of deoxyribonucleic acid (DNA) was conducted from all samples of milk. Subsequently, the nested-PCR reaction was utilized for the detection of C. burnetii, with the IS1111 transposon gene serving as the diagnostic target.
Results: The results obtained from the IS1111 transposon amplification assay revealed that 95% of the examined milk samples (with a 95% confidence interval of 0.7-55%) were from a genome infected with C. burnetii. There was no significant difference in the excretion of C. burnetii in milk between the Pol-e Dokhtar and Khorramabad regions.
Conclusion: The present study has demonstrated that sheep milk can be regarded as a significant source of transmission for the bacterium C. burnetii to subsequent hosts. It is imperative to acknowledge the considerable persistence of C. burnetii, attributable to its spore-like form, in order to fully comprehend the gravity of the risk posed by its transmission via raw milk and unpasteurized dairy products. Consequently, sheep milk should be regarded as a significant element in the epidemiology of Q fever and public health in Pol-e Dokhtar and Khorramabad regions of Lorestan province.

کلیدواژه‌ها English

Milk
sheep
nested polymerase chain reaction
coxilla borneti
 
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  • تاریخ دریافت 17 مهر 1404
  • تاریخ بازنگری 01 آبان 1404
  • تاریخ پذیرش 12 آذر 1404
  • تاریخ اولین انتشار 12 آذر 1404
  • تاریخ انتشار 01 دی 1404