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- W3211066970 abstract "Porcine pseudorabies virus (PRV) infection is a major disease in swine. It is challenging to eradicate the virus entirely after it has invaded Chinese farms, resulting in significant economic losses. This study aimed to explore the histopathological correlation of brain regions in PRV-infected pigs. Twenty pigs were randomly divided into two experimental groups (the PRV-infected and sham-inoculated groups; n = 10 per group). The pigs were then observed for clinical signs at specified time points. Brain tissue samples were collected for histopathological examination on days 3, 10, and 14. The correlation analysis was based on clinical observation, lesion characterization, and pathogen location. Clinical observation showed that the severity of clinical neurological signs increased with time. Pathological dissection and microscopic observation revealed gross pathological changes such as degeneration and necrosis of nerve cells, increase in microglia, eosinophilic inclusion body, lymphocyte infiltration, and loose cortical tissue structure. Immunohistochemistry showed that the virus was mainly localized in neurons, microglia, nerve fibers, cerebellar granular layer, and Purkinje cell layer. The virus invasion route was from the cerebrum to the cerebellum and eventually to the brainstem, and the severity of brain damage increased with time. The route of virus infection was from the olfactory bulb to the hippocampus and eventually to the medulla oblongata, and the viral expression increased with time. Of note, brain injury, viral expression, and clinical neurological signs were positively correlated with the infection period; similarly, the severity and degrees of their changes were positively correlated." @default.
- W3211066970 created "2021-11-08" @default.
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- W3211066970 date "2021-12-01" @default.
- W3211066970 modified "2023-09-27" @default.
- W3211066970 title "Histopathology of brain functional areas in pigs infected by porcine pseudorabies virus" @default.
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- W3211066970 doi "https://doi.org/10.1016/j.rvsc.2021.10.011" @default.
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