Pathology of astrovirus associated diarrhoea in a paediatric bone marrow transplant recipient

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Abstract

Human astrovirus infection often causes outbreaks of self limiting diarrhoea, but may also infect patients who are immunodeficient or immunocompromised. Although there are previous publications relating to various aspects of astroviruses, there is a minimal amount of literature on the histopathological features of gastrointestinal astrovirus infection in humans. We report the histopathological findings, including immunohistochemical and electron microscopic features, of astrovirus infection in a bone marrow transplant recipient aged 4 years with diarrhoea. The appearance of a small intestinal biopsy did not suggest graft versus host disease, but demonstrated villous blunting, irregularity of surface epithelial cells, and an increase in lamina propria inflammatory cell density. Immunohistochemical staining with a murine astrovirus group specific monoclonal antibody demonstrated progressively more extensive staining in the duodenal and jejunal biopsies, predominantly restricted to the luminal surface and cytoplasm of surface epithelial cells, most marked at the villus tips. Electron microscopic examination demonstrated viral particles within the cytoplasm of enterocytes, focally forming paracrystalline arrays.

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APA

Sebire, N. J., Malone, M., Shah, N., Anderson, G., Gaspar, H. B., & Cubitt, W. D. (2004). Pathology of astrovirus associated diarrhoea in a paediatric bone marrow transplant recipient. Journal of Clinical Pathology, 57(9), 1001–1003. https://doi.org/10.1136/jcp.2004.017178

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