Autonomic control of acid phosphatase exocrine secretion by the rat prostate.
In vivo prostatic secretion was collected from retired breeder Sprague Dawley rats using a method for isolated perfusion of the rat prostatic urethra. Enzymatic acid phosphatase determination was performed on the collected effluent. Control acid phosphatase secretion was 24.2 +/- 2.7 nm over 30 minutes. Intravenous phenylephrine 5 mg/kg stimulated a 10 fold increase in acid phosphatase secretion. The secretion seen with phenylephrine was dose dependent and could be blocked with prazosin, but not yohimbine, atropine, or propranolol. Intravenous beta-adrenergic agonist isoproterenol caused no increase in the secretion of rat prostatic acid phosphatase. Intravenous administration of the cholinergic agonist pilocarpine also resulted in a dose dependent rise in acid phosphatase secretion. The stimulation seen could be blocked by atropine but not phentolamine or propranolol. The stimulation of acid phosphatase secretion seen with alpha 1 adrenergic or cholinergic agonists was not additive. Intravenous vasoactive intestinal peptide did not stimulate acid phosphatase secretion nor did it augment the secretion induced by alpha 1 adrenergic or cholinergic agonists. Release of acid phosphatase into rat prostatic exocrine secretion is under both alpha 1 adrenergic and cholinergic control.
Jacobs
S C
SC
Department of Urology, Medical College of Wisconsin, Milwaukee.
Story
M T
MT
D000135:Acid Phosphatase / Q000378:metabolism*; D000818:Animals; D008297:Male; D010275:Parasympathetic Nervous System / Q000502:physiology; D011467:Prostate / Q000294:innervation* / Q000378:metabolism; D051381:Rats; D011919:Rats, Inbred Strains; D013564:Sympathetic Nervous System / Q000502:physiology*
D000135:Acid Phosphatase