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Dinoprost (Prostaglandin F2a) is a naturally occurring prostaglandin. It is used in medicine to induce labor and as an abortifacient.

Progesterone is a steroid hormone that regulates the menstrual cycle and is essential for pregnancy. It is also commonly used to induce melasma models.

1. Spinosin (Flavoayamenin) ameliorated memory impairment induced through AβO, the serotonergic neurotransmitter system, and these effects were regulated, in part, through neuroprotective activity via the anti-inflammatory effects of Spinosin. 2. Spinosin exerts anxiolytic-like effects, and its mechanism of action appears to be modulated by GABAA and 5-HT1A receptors. 3. There was a wide brain regional tissue distribution of Spinosin. The concentrations of Spinosin in corpus striatum and hippocampus were higher than that in other areas.

Isocupressic acid ((+)-Isocupressic acid) is an abortifacient isolated from pine needles and bark that blocks progesterone production in bovine corpus luteum cells.