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Iranian Journal of Microbiology، جلد ۳، شماره ۳، صفحات ۱۳۵-۱۳۹
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عنوان انگلیسی Evaluation of pathogenic serovars of Leptospira interrogans in dairy cattle herds of Shahrekord by PCR
چکیده انگلیسی مقاله Background and objectives: Leptospirosis is an important zoonotic disease caused by Leptospira interrogans . Leptospirosis leads to economical losses in dairy farm industry. The objective of this study was to evaluate the pathogenic serovars of Leptospira interrogans in dairy cattle herds of Shahrekord by PCR. Materials and Methods: Two hundred samples (100 urine and 100 blood) were collected from 100 cows randomly and delivered to the laboratory. Samples were stored at −20 °C. DNA was extracted and purified from the plasma and urine samples and concentrated on diatoms in the presence of guanidine thiocyanate (GuSCN). PCR products were detected and identified as Leptospira by ilumination of the expected size of DNA bands after staining of the agarose gel with ethidium bromide gels. PCR products were purified and sequenced. Results: The results showed that 28% of urine samples and 23% of plasma samples were contaminated. The major serotypes were Icterohaemorrhagiae (50%) and Pomona (37.5%). The urine samples of 17 cows were positive for Leptospira without positive plasma samples. This indicated that these cows are reservoirs in dairy herds of Shahrekord and dangerous for human health. The plasma samples of twelve cows were positive for Leptospira without positive urine samples. Conclusions : Leptospira serotypes can be maintained in relatively dry regions and must be considered when dealing with leptospirosis in dairy farms of Shahrekord and human health.
کلیدواژه‌های انگلیسی مقاله Leptospira,Shahrekord,Cattle,PCR
نویسندگان مقاله a جعفری دهکردی | a jafari dehkordi
department of large animal internal medicine,veterinary faculty of shahrekord university, iran.


hr shahbazkia | hr shahbazkia
biochemistry veterinary faculty, shahrekord university, iran.


n رونق | n ronagh
veterinary faculty, shahrekord university, shahrekord, iran.
نشانی اینترنتی http://ijm.tums.ac.ir/index.php/ijm/article/view/102
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