Stiftung Tierärztliche Hochschule Hannover (TiHo)

Facets of Theiler's murine encephalomyelitis virus-induced diseases : an update

Gerhauser, Ingo ORCID; Hansmann, Florian GND; Ciurkiewicz, Malgorzata GND; Löscher, Wolfgang GND; Beineke, Andreas GND

Theiler's murine encephalomyelitis virus (TMEV), a naturally occurring, enteric pathogen of mice is a Cardiovirus of the Picornaviridae family. Low neurovirulent TMEV strains such as BeAn cause a severe demyelinating disease in susceptible SJL mice following intracerebral infection. Furthermore, TMEV infections of C57BL/6 mice cause acute polioencephalitis initiating a process of epileptogenesis that results in spontaneous recurrent epileptic seizures in approximately 50% of affected mice. Moreover, C3H mice develop cardiac lesions after an intraperitoneal high-dose application of TMEV. Consequently, TMEV-induced diseases are widely used as animal models for multiple sclerosis, epilepsy, and myocarditis. The present review summarizes morphological lesions and pathogenic mechanisms triggered by TMEV with a special focus on the development of hippocampal degeneration and seizures in C57BL/6 mice as well as demyelination in the spinal cord in SJL mice. Furthermore, a detailed description of innate and adaptive immune responses is given. TMEV studies provide novel insights into the complexity of organ- and mouse strain-specific immunopathology and help to identify factors critical for virus persistence.

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Gerhauser, Ingo / Hansmann, Florian / Ciurkiewicz, Malgorzata / et al: Facets of Theiler's murine encephalomyelitis virus-induced diseases. an update. Hannover 2019. Tierärztliche Hochschule Hannover.

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