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首页> 外文期刊>Tropical Animal Health and Production >Prevalence of renal lesions in slaughtered cattle in Shiraz, Iran, and detection of Leptospira in them by nested PCR-RFLP
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Prevalence of renal lesions in slaughtered cattle in Shiraz, Iran, and detection of Leptospira in them by nested PCR-RFLP

机译：伊朗设拉子屠宰牛的肾脏病变患病率及巢式PCR-RFLP检测钩端螺旋体

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摘要

Renal diseases in cattle are frequently not recognized due to the subclinical conditions. Some species of Leptospira are the main cause of infectious agents that damage the kidneys and lead to abortion and economic losses in cattle and are also of major concern in the public health. This study was aimed to assess the prevalence of renal lesions of slaughtered cattle in the Shiraz abattoir and to determine the correlation between rejected kidneys and infection with Leptospira using nested PCR-restriction fragment length polymorphism (RFLP) techniques. Out of 1000 inspected animals, 205 (20.5 %) revealed the renal lesions. Chronic nephritis (7.5 %), white-spotted kidney (7.3 %), and petechial hemorrhage (3.5 %) were the most prevalent forms of the lesions. A direct correlation between increasing the age and significant increase in the rate of lesions was also observed (P = 0.03). Using nested PCR-RFLP assay, 40.8 % of the tested kidneys were turned to be infected to the pathogenic species of Leptospira. The risk of infection of the kidneys with white spot to pathogenic species of Leptospira (53.8 %) was more than that of the kidneys with other lesions (25.0 %) (P = 0.014). The odd ratio indicates that the kidneys with white spot lesions are likely to be infected with pathogenic species of Leptospira, five times greater than other lesions. This study showed that renal lesions especially white-spotted kidney, which were considerably associated with Leptospira in slaughtered cattle in Shiraz, were very high. This is important in terms of public health and in particular, increases the risk of transmission of disease to human specially in the high-risk careers including farmers, veterinarians, and abattoir workers.
机译：由于亚临床情况，通常不认识牛的肾脏疾病。钩端螺旋体的某些种类是导致肾脏受损并导致牛流产和经济损失的传染原的主要原因，也是公共卫生中的主要关注点。这项研究的目的是使用巢式PCR限制性片段长度多态性（RFLP）技术评估设拉子屠宰场屠宰牛的肾脏病变患病率，并确定拒绝的肾脏与钩端螺旋体感染之间的相关性。在检查的1000只动物中，有205只（20.5％）显示出肾脏损害。慢性肾炎（7.5％），白点肾（7.3％）和足膜出血（3.5％）是最常见的病变形式。还观察到年龄的增加和病变率的显着增加之间的直接相关性（P = 0.03）。使用巢式PCR-RFLP分析，将40.8％的受试肾脏感染钩端螺旋体病原体。白斑病的肾脏感染钩端螺旋体病原体的风险（53.8％）高于其他病变的肾脏（25.0％）（P = 0.014）。奇数比表明具有白斑病变的肾脏很可能感染了钩端螺旋体的致病菌种，是其他病变的五倍。这项研究表明，设拉子宰杀的牛的肾脏损害，特别是白斑状肾脏，与钩端螺旋体有相当大的关联。这对于公共卫生而言非常重要，尤其是在包括农民，兽医和屠宰场工人在内的高风险职业中，增加了疾病传播给人类的风险。

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