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Neurologic control of prostatic secretion in the dog
Investigative Urology
|January 1, 1978
Summary
A new model quantifies prostatic secretions, revealing parasympathetic stimulation increases flow and sympathetic stimulation aids expulsion during sexual function. This clarifies autonomic nervous system roles in male reproductive physiology.
Area of Science:
- Urology
- Neuroendocrinology
- Reproductive Physiology
Background:
- The prostate gland plays a crucial role in male reproductive function, producing a significant portion of seminal fluid.
- Understanding the autonomic nervous system's control over prostatic secretion is vital for comprehending male sexual physiology and dysfunction.
Purpose of the Study:
- To develop a model for measuring prostatic secretion volume.
- To investigate the influence of the autonomic nervous system (parasympathetic and sympathetic) on prostatic secretion.
- To correlate autonomic nervous system activity with normal sexual function stages.
Main Methods:
- Development of a model to record prostatic secretion volume.
- Pharmacologic stimulation and blockade of autonomic nervous system divisions.
- Direct electrical nerve stimulation of the prostate.
Main Results:
- Parasympathetic stimulation led to increased prostatic secretion.
- Sympathetic stimulation caused contraction of prostatic smooth muscle, expelling secretions into the urethra.
- Parasympathetic activity correlates with increased secretion during sexual excitation.
- Sympathetic activity correlates with emission and expulsion of prostatic fluid during orgasm.
Conclusions:
- The autonomic nervous system differentially regulates prostatic secretion and expulsion.
- Parasympathetic nerves stimulate secretion, while sympathetic nerves trigger expulsion via smooth muscle contraction.
- These mechanisms are integral to the phases of male sexual function, from excitation to emission.