DrugLib.com — Drug Information Portal

Rx drug information, pharmaceutical research, clinical trials, news, and more

Scopolamine effects on the pressor response to thyrotropin-releasing hormone in humans.

Author(s): Molchan SE, Hill JL, Minichiello M, Vitiello B, Sunderland T

Affiliation(s): Section on Geriatric Psychopharmacology, National Institute of Mental Health, Bethesda, MD 20892.

Publication date & source: 1994, Life Sci., 54(13):933-8.

Publication type: Clinical Trial; Randomized Controlled Trial

Thyrotropin-releasing hormone (TRH) produces a marked pressor effect, which may be mediated by central cholinergic neurons, which in turn enhance sympathetic nervous system activity. In this study, 22 subjects (10 patients with Alzheimer's disease and 12 elderly controls) were administered IV scopolamine or placebo prior to administration of IV high-dose TRH (0.5 mg/kg). Systolic blood pressure was less on the day scopolamine was administered prior to TRH administration, as compared with placebo (F[1,20] = 6.12, p < 0.02). Results indicate that the pressor effect of TRH is attenuated by scopolamine, indicating a role of the cholinergic system in this response in humans.

Page last updated: 2006-01-31

-- advertisement -- The American Red Cross
Home | About Us | Contact Us | Site usage policy | Privacy policy

All Rights reserved - Copyright DrugLib.com, 2006-2017