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  • Title: Role of the central muscarinic receptor of prostaglandin I2 in cardiovascular function in rat.
    Author: Saito R, Kamiya HO, Ono N.
    Journal: Brain Res; 1985 Mar 18; 330(1):167-9. PubMed ID: 3886074.
    Abstract:
    The effects of injection of prostaglandin (PG) I2 into the cerebral ventricle on cardiovascular responses and their modification by intracerebroventricular (i.c.v.) pretreatment with several drugs were studied in male Wistar rats under urethane anesthesia. When injected into the ventricle, PG I2 (50 nmol/kg) caused a decrease in blood pressure and an increase in heart rate which were of short duration and were significantly inhibited by i.c.v. pretreatment with drugs, such as atropine (0.4 mumol/kg) and diphenhydramine (1 mumol/kg), having an anticholinergic effect. The similar effects induced by intravenous (i.v.) injection of PG I2 (5 nmol/kg) were not inhibited by i.v. pretreatment with these drugs. These results suggest that PG I2 play a role in regulation of cardiovascular function through central muscarinic acetylcholine receptors.
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