AGTR1 and polycystic ovary syndrome: EMPA treatment in PCOS rats downregulated AT1R mRNA expression in the medulla (0.74 ± 0.10 vs. 1.11 ± 0.09, p < 0.05) and cortex (0.79 ± 0.06 vs. 1.14 ± 0.09, p = 0.055).