Biology of reproduction

Noradrenaline stimulates the production of prostaglandin f2alpha in cultured bovine endometrial cells.

PMID 9915991


The stimulatory effect of noradrenaline (NA) as well as oxytocin (OT) on bovine endometrial prostaglandin (PG) F2alpha production, and the intracellular mechanisms of their actions, were investigated in cultured bovine endometrial cells (a mixture of epithelial, stromal, and glandular cells). The cells were cultured in Dulbecco's Modified Eagle's medium and Ham's F-12 medium (1:1 [v:v]) with 10% calf serum. When the cells reached confluence, the culture medium was replaced with fresh medium with 0.1% BSA and various doses of NA (10(-8)-10(-4) M). NA stimulated PGF2alpha production in a dose-dependent manner (p < 0.05). To evaluate the intracellular mechanisms of NA and OT actions, the cells were treated with forskolin (an activator of adenylate cyclase), phorbol 12-myristate 13-acetate (PMA, an activator of protein kinase [PK] C), Rp-cAMP (a competitive cAMP antagonist and an inhibitor of PKA), U-73122 (an inhibitor of phospholipase [PL] C), or anthranilic acid (ACA, an inhibitor of PLA2). Forskolin and PMA stimulated PGF2alpha production in a dose-dependent manner (p < 0.05). Rp-cAMP completely inhibited (p < 0.001) the NA-induced, but not the OT-induced, PGF2alpha production. Although U-73122 inhibited only OT-induced PGF2alpha production (p < 0.001), ACA completely stopped the actions of NA and OT. The overall results indicate that NA as well as OT is involved in the regulation of the endometrial PGF2alpha production in cattle and that the stimulatory effects of NA and OT on PGF2alpha production are mediated via the PKA and PKC pathways, respectively.

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Salbutamol hemisulfate salt, ≥98%
C13H21NO3 · 0.5H2O4S