Carrasco L, Ruiz-Villamor E, Gómez-Villamandos JC, Salguero FJ, Bautista MJ, Maciá M, Quezada M, Jover A. Classical swine fever: morphological and morphometrical study of pulmonary intravascular macrophages.
J Comp Pathol 2001;
125:1-7. [PMID:
11437510 DOI:
10.1053/jcpa.2001.0470]
[Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
To gain further insight into the pathogenesis of classical swine fever (CSF), the changes induced by hog cholera (HC) virus in pulmonary intravascular macrophages (PIMs) were examined. Twelve pigs were inoculated by the intramuscular route with a virulent strain of HC virus (Quillota strain) and killed in groups of three at 4, 7, 10 and 14 days post-inoculation. Immunohistochemical and ultrastructural examination revealed HC virus infection in endothelial cells, PIMs, and interstitial and alveolar macrophages. In addition to viral replication, a predominant feature was the secretory activation of PIMs, characterized by expanded rough endoplasmic reticulum and hyperplastic Golgi complexes. The results obtained suggest that macrophage activation and the subsequent release of pro-inflammatory mediators play an important role in the pathogenesis of CSF.
Collapse