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Determination of prostatic secretion in rats: Effect of neurotransmitters and testosterone by Jin-Min Wang; Kevin E. McKenna; Dr. Chung Lee is a Medicine article available to read on EtoBox.
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To study the neuronal and hormonal control of prostatic secretion, the prostatic urethra was cannulated in urethane anesthetized rats. The volume of prostatic secretion was measured following infusion of cholinergic and adrenergic agonists intact animals. Prostatic secretion was elicited by norepinephrine, phenylephrine and carbachol; but not by clonidine, isoproterenol, pilocarpine, or acetylcholine. Phenylephrine and norepinephrine infusions caused a high initial rate of secretion, which then declined rapidly. Carbachol infusion, in contrast, produced a low but constant rate of secretion that was maintained for up to 1 hour. Histological examination of the prostate revealed contraction of smooth muscle surrounding prostatic ducts after infusion of phenylephrine and norepinephrine, but not carbachol. Prostatic secretion was also measured in castrated rats supplemented with various doses of testosterone. Testosterone exerted a dose dependent control of prostatic weight and secretory volume. These results indicate 1) alpha 1 receptor agonists can cause contraction of smooth muscle to expel fluid from the rat prostate, 2) carbachol induces prostatic secretion through a mechanism othe
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- Author
- Jin-Min Wang; Kevin E. McKenna; Dr. Chung Lee
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0270-4137)
- Published
- 1990
- Language
- EN
- Field
- Medicine (Health Sciences)