Histopathological Diagnosis of Postweaning Multisystemic Wasting Syndrome
نویسندگان
چکیده
Postweaning multisystemic wasting syndrome (PMWS) is a disease of pigs first recognised in North America in 1991 and subsequently reported worldwide that is caused by Porcine circovirus 2 (PCV2), a member of the family Circoviridae. The most consistent feature of PMWS is a generalized depletion of lymphocytes. Secondary infections with opportunistic organisms are common. There is evidence that the destruction of thymic lymphocytes has a central role in the pathogenesis of PMWS.The objective of this paper was to describe the microscopic and ultrastructural pathology associated with natural cases of PCV2, as well as PMWS, a key point in the diagnosis of PCV2 infection and associated diseases.
منابع مشابه
A Field-Based Assessing the Role of PCV-2 and Other Swine Viruses in Postweaning Multisystemic Wasting Syndrome
A case-control study was conducted to assess the association of major swine viral pathogens, including porcine circovirus type 2 (PCV2) with postweaning multisystemic wasting syndrome (PMWS). Cases were defined as individual pigs with a clinical history of progressive weight loss and respiratory signs and that were subsequently diagnosed with PMWS on the basis of characteristic histopathologica...
متن کاملPorcine circovirus type 2 viremia and seroconversion in pigs from a farm affected by postweaning multisystemic wasting syndrome.
The aim of the study was to assess the usefulness of real-time PCR and serological methods as indicators of postweaning multisystemic wasting syndrome (PMWS) occurrence. Significantly higher level of porcine circovirus type 2 (PCV2) viral load in serum and significantly lower titre of specific antibodies in PMWS-affected pigs indicated that combination of quantitative PCR and serological method...
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Porcine dermatitis and nephropathy syndrome (PDNS) is broadly discussed as a porcine circovirus type 2 (PCV2)-associated disease, although PCV2, in contrast to postweaning multisystemic wasting syndrome (PMWS), has to date not been proven to be the aetiologic agent. The clinical signs, gross post-mortem and histopathological changes observed in affected pigs, were similar to those previously de...
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Corrêa A.M.R., Zlotowski P., Rozza D.B., Borba M.R., Leal J.S., Cruz C.E.F. & Driemeier D. 2006. Postweaning multisystemic wasting syndrome in farmed wild boars (Sus scrofa) in Rio Grande do Sul. Pesquisa Veterinária Brasileira 26(3):154-156. Department of Veterinary Pathology, Faculty of Veterinary Medicine, Federal University of Rio Grande do Sul (UFRGS), Av. Bento Gonçalves 9090, Porto Alegr...
متن کاملRecognizing and diagnosing postweaning multisystemic wasting syndrome (PMWS)
http://www.aasp.org/shap/issues/v5n5/index.html ostweaning multisystemic wasting syndrome (PMWS) is a new disease first described in 1996.1,2 In the past 6–8, months the number of affected herds has grown considerably, and there are now confirmed cases in Alberta, Saskatchewan, Manitoba, Quebec, California, Iowa, Indiana, and Spain. Furthermore, since 1994, a similar syndrome—”wasting disease o...
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