Borquez Cuevas Mercedes Yannin, Hernández Chávez Juan Francisco, Armenta Leyva Betsy, Cedillo Cobián Jesús Raymundo, Molina Barrios Ramón Miguel
Departamento de Ciencias Agronómicas y Veterinarias, Instituto Tecnológico de Sonora, Antonio Caso S/N C.P. 85093 Cd. Obregón, Sonora, Mexico.
Case Rep Vet Med. 2021 Feb 4;2021:6623888. doi: 10.1155/2021/6623888. eCollection 2021.
Ovine progressive pneumonia (OPP) is the most severe presentation of small ruminant lentivirus (SRLV) infection known as Maedi-Visna. Serological evidence in Mexico of the presence of this lentivirus was published in 1986. After that, studies revealed that SRLVs have a broad distribution in Mexico by detecting antibodies or/and molecular tests; however, a descriptive case of the disease has not been published. This work's objective was to describe the diagnosis of a case of OPP through lesion description, serology, and molecular test. The histopathological study showed that lymph follicular hyperplasia, interstitial pneumonia, and smooth muscle hyperplasia were presented. The serological test demonstrated specific antibodies against the Maedi-Visna virus, and PCR analysis demonstrated a positive outcome. These results include the criteria for the diagnosis of OPP. The serological prevalence of this disease is presented, contributing to the knowledge of the ecology of this disease in the world. This work is the first case report of ovine progressive pneumonia in Mexico and evidence of seroprevalence in sheep herds from Sonora, Mexico.
绵羊进行性肺炎（OPP）是小反刍兽慢病毒（SRLV）感染的最严重表现形式，称为梅迪-维斯纳病。1986年发表了关于这种慢病毒在墨西哥存在的血清学证据。此后，研究通过检测抗体或/和分子检测发现SRLV在墨西哥广泛分布；然而，尚未发表该病的描述性病例。这项工作的目的是通过病变描述、血清学和分子检测来描述一例OPP病例的诊断。组织病理学研究显示存在淋巴滤泡增生、间质性肺炎和平滑肌增生。血清学检测显示针对梅迪-维斯纳病毒的特异性抗体，PCR分析显示呈阳性结果。这些结果包括OPP的诊断标准。介绍了该病的血清学流行情况，有助于了解这种疾病在世界范围内的生态学。这项工作是墨西哥绵羊进行性肺炎的首例病例报告，也是墨西哥索诺拉州绵羊群血清流行率的证据。
