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1996-02-26
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Document 0299
DOCN M9620299
TI Ultrastructural study on experimental infection of rotavirus in a murine
heterologous model.
DT 9602
AU Majerowicz S; Kubelka CF; Stephens P; Barth OM; Departamento de
Virologia, Instituto Oswaldo Cruz, Rio de; Janeiro, Brasil.
SO Mem Inst Oswaldo Cruz. 1994 Jul-Sep;89(3):395-402. Unique Identifier :
AIDSLINE MED/96001440
AB Viral replication, histopathological and ultrastructural changes were
observed for a period of nine days in the small intestine of suckling
mice infected with a simian rotavirus (SA11). Samples taken from
duodenum, jejunum and ileum were prepared for light microscopy,
transmission and scanning electron microscopy analysis. Histopathologic
effect could be detected within 8 hr post-infection, when only a few
altered cells were observed. Damage was extensive after 16 hr
post-infection, showing swollen enterocytes and reduced and irregularly
oriented microvilli at intestinal villi tips. Virus particles were
detected at 16 and 48 hr post-infection, budding from the viroplasm into
the rough endoplasmic reticulum cisternae in ileum enterocytes. Clear
evidence of viral replication, observed by electron microscopy was not
described before in heterologous murine models. Regeneration of the
intestinal villi began at the third day post-infection. Despite some
differences observed in clinical symptoms and microscopic analysis of
homologous and heterologous rotavirus infections, we concluded that
mechanisms of heterologous rotavirus infection in mice follow similar
patterns to those observed in the homologous models.
DE Animal Intestines/PHYSIOPATHOLOGY/ULTRASTRUCTURE/*VIROLOGY Mice
Retroviruses, Simian/GROWTH & DEVELOPMENT/ISOLATION & PURIF/
*ULTRASTRUCTURE Rotavirus Infections/PATHOLOGY/*VIROLOGY Virus
Replication JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).