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Demonstration of microchimerism in pregnant sows and effects of congenital PRRSV infection

Authors
Journal
Veterinary Research
0928-4249
Publisher
Springer (Biomed Central Ltd.)
Publication Date
Volume
43
Issue
1
Identifiers
DOI: 10.1186/1297-9716-43-19
Keywords
  • Short Report

Abstract

The presence of foreign cells within the tissue/circulation of an individual is described as microchimerism. The main purpose of the present investigation was to study if microchimerism occurs in healthy sows/fetuses and if porcine reproductive and respiratory syndrome virus (PRRSV) infection influences this phenomenon. Six dams were inoculated intranasally with PRRSV and three non-inoculated dams served as controls. Male DNA was detected in female fetal sera of all dams via PCR. Male DNA was also detected in the maternal circulation. Sex-typing FISH showed the presence of male cells in the female fetal organs and vice versa. PRRSV infection did not influence microchimerism, but might misuse maternal and sibling microchimeric cells to enter fetuses.

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