Evidence for the localization of porcine reproductive and respiratory syndrome virus (PRRSV) antigen and RNA in ovarian follicles in gilts

J. H. Sur, Alan R Doster, J. A. Galeota, F. A. Osorio

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The pathogenesis of porcine reproductive and respiratory syndrome virus (PRRSV) infection in ovary was studied in sexually mature, cycling, nonsynchronized gilts infected with the PRRSV 16244B, a virulent field strain. Previous studies have shown that PRRSV can be isolated from ovaries and is transplacentally passed from gilts to the fetuses. The cause of infertility following PRRSV infection is not known. In this study, we identified the tropism of PRRSV in ovarian tissue from experimentally infected gilts in samples collected between 7 and 21 days postinfection (DPI). Tissues were collected and examined by virus isolation, in situ hybridization (ISH), immunohistochemistry (IHC), and double labeling to identify PRRSV-infected cell types. PRRSV was isolated in ovarian follicles at 7 days DPI. The IHC and ISH indicated that PRRSV-positive cells in ovaries were predominantly macrophages, which were numerous in atretic follicles. No evidence of infection and/or perpetuation of PRRSV in ova was observed, indicating that the female gonad is an unlikely site of persistence. No alteration of the normal ovarian architecture that would support a possible role of PRRSV infection in porcine female infertility was observed.

Original languageEnglish (US)
Pages (from-to)58-66
Number of pages9
JournalVeterinary pathology
Volume38
Issue number1
DOIs
StatePublished - Dec 1 2001

Fingerprint

Porcine respiratory and reproductive syndrome virus
Ovarian Follicle
Porcine reproductive and respiratory syndrome virus
ovarian follicles
gilts
RNA
antigens
Antigens
Virus Diseases
Ovary
infection
in situ hybridization
In Situ Hybridization
immunohistochemistry
Immunohistochemistry
Female Infertility
follicular atresia
tropisms
Tropism
female fertility

Keywords

  • Double labeling
  • Gilts
  • Granulosa cells
  • Immunohistochemistry
  • In situ hybridization
  • Ovary
  • PRRSV
  • Resident macrophages of the ovary

ASJC Scopus subject areas

  • veterinary(all)

Cite this

Evidence for the localization of porcine reproductive and respiratory syndrome virus (PRRSV) antigen and RNA in ovarian follicles in gilts. / Sur, J. H.; Doster, Alan R; Galeota, J. A.; Osorio, F. A.

In: Veterinary pathology, Vol. 38, No. 1, 01.12.2001, p. 58-66.

Research output: Contribution to journalArticle

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