Short communicationExpression of Toll-like receptors 2, 4 and 6 in the equine chorioallantois

Add time:08/28/2019    Source:sciencedirect.com

In mares, placental diseases are a common cause of pregnancy failure and they can have an economic impact on the horse breeding industry. To our knowledge no published data on TLR expression in the equine placenta exist. This study examined the expression of TLR 2, 4 and 6 as transcript and protein in the placenta (chorioallantois) of 14 foals born alive. By PCR, all examined placental samples contained TLR 2, 4 and 6 transcripts. Using immunohistochemistry, trophoblasts and allantoic epithelium were immunopositive for TLR 2, 4 and 6 in all placental samples. The majority of placental samples contained TLR 4 and 6 positive stromal cells and vascular smooth muscle cells. Since these results confirm the expression of TLR 2, 4 and 6 in different cell populations of the equine placenta, they are the basis for studies into the pathogenesis of TLR-associated placental diseases in mares.

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