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Updated: May 14, 2026
08:49
Murine Prostate Micro-dissection and Surgical Castration
Published on: May 11, 2016
Contractile signaling pathways in mouse prostate smooth muscle
1Boston Biomedical Research Institute, Watertown, Massachusetts 02472, USA. kitazawa@bbri.org
The Prostate
|February 8, 2013
Summary
Mouse prostate smooth muscle contraction varies by lobe. Noradrenaline-induced contractions in the ventral prostate involve calcium release, influx, and sensitization pathways, offering insights into benign prostate hyperplasia.
Area of Science:
- Urology
- Physiology
- Pharmacology
Background:
- Prostate smooth muscle is crucial for fluid ejection and benign prostate hyperplasia (BPH) pathogenesis.
- Mice are valuable models for disease research, yet mouse prostate contraction mechanisms are poorly understood.
Purpose of the Study:
- To investigate the contractile mechanisms of mouse prostate smooth muscle.
- To elucidate the signaling pathways involved in prostate smooth muscle contraction.
Main Methods:
- Isometric contractions of mouse prostate smooth muscle rings were measured.
- Contractile responses to high potassium, noradrenaline (NA), and acetylcholine (ACh) were assessed with various antagonists and inhibitors.
Main Results:
- Agonist-induced contraction amplitudes differed significantly across prostate lobes.
- Ventral and dorsal prostate rings showed strong contractions to NA and ACh, unlike lateral and anterior rings.
- NA-induced contractions in ventral prostate smooth muscle involved calcium release, influx, and ROCK/PKC-mediated sensitization.
Conclusions:
- Prostate smooth muscle contraction is differentially regulated among mouse prostate lobes.
- Understanding these mechanisms in mouse models aids in studying BPH-related smooth muscle changes.
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