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- W4220808613 abstract "Understanding why intrauterine growth restricted (IUGR) fetuses are more resilient to transplacental porcine reproductive and respiratory syndrome virus-2 (PRRSV-2) infection compared to normal fetuses may lead to alternative approaches to control PRRS. Our objective was to compare gene expression of a subset of tight junction proteins in the endometrium (END) and placenta (PLC) of i) IUGR vs N-IUGR fetuses, and ii) across disease progression phenotypes following PRRSV-2 infection. In experiment 1, snap frozen END and PLC from fetuses of non-infected control dams (CTRL) and from high viral load viable (HVL-VIA) fetuses, with both groups further classified as either IUGR or non(N)-IUGR based on brain: liver weight ratio were strategically selected from a large challenge trial. In experiment 2, similar tissues were randomly selected from CTRL and from uninfected thymus (UNIF), (HVL-VIA) and HVL meconium-stained in the body (HVL-MEC-B) of PRRSV-infected dams. The expression of claudin (CLDN) 1, 3, 4, 5, 6, 7, 10, tight junction protein 1 (TJP1) and occludin (OCLN) genes were evaluated by PCR. There were no significant group differences between IUGR and N-IUGR groups, regardless of infection status, that explained the resilience of IUGR fetuses. Regarding disease progression, elevated CLDN3 was observed in END of UNIF, CLDN6 expression was lower in PLC when the fetus became infected (HVL-VIA), and CLDN10 elevated in PLC in fetuses showing evidence of compromise (HVL-MEC-B). Lastly, OCLN gene expression was higher in the END and PLC following maternal infection. In conclusion, differences in TJ integrity were mainly observed following PRRSV-2 infection with stepwise changes corresponding with disease progression." @default.
- W4220808613 created "2022-04-03" @default.
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- W4220808613 date "2022-05-01" @default.
- W4220808613 modified "2023-09-24" @default.
- W4220808613 title "Effect of porcine reproductive and respiratory syndrome virus 2 on tight junction gene expression at the maternal-fetal interface" @default.
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- W4220808613 doi "https://doi.org/10.1016/j.theriogenology.2022.03.011" @default.
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