The Role of Peroxisome Proliferator-Activated Receptors in PGF-Induced Luteolysis in the Bovine Corpus Luteum.

The participation of peroxisome proliferator-activated receptors (PPARs) in ovarian function in cattle is still not fully understood. The aim of this in vitro study was to determine: (i) the immunolocalization, mRNA expression and tissue concentration of PPARα, PPARδ and PPARγ in the bovine corpus luteum (CL) ( = 40) throughout the estrous cycle, and (ii) the involvement of PPAR in PGF-induced processes related to luteolysis. CL ( = 9) explants were cultured in the presence of PPAR antagonists (10 M) in combination with or without PGF receptor antagonist (10 M) and PGF (10 M).