Muscarinic receptors of the urinary bladder: Detrusor, urothelial and prejunctional

Research output: Contribution to journalReview articleResearchpeer-review

153 Citations (Scopus)

Abstract

The parasympathetic nervous system is responsible for maintaining normal bladder function, contracting the bladder smooth muscle (detrusor) and relaxing the bladder outlet during micturition. Contraction of the bladder involves direct contraction via M3 receptors and an indirect 're-contraction' via M2-receptors whereby a reduction in adenylate cyclase activity reverses the relaxation induced by β-adrenoceptor stimulation. Muscarinic receptors are also located on the epithelial lining of the bladder (urothelium) where they induce the release of a diffusible factor responsible for inhibiting contraction of the underlying detrusor smooth muscle. The factor remains unidentified but is not nitric oxide, a cyclooxygenase product or adenosine triphosphate. Finally, muscarinic receptors are also located prejunctionally in the bladder on cholinergic and adrenergic nerve terminals, where M1-receptors facilitate transmitter release and M2 or M4-receptors inhibit transmitter release. In pathological states, changes may occur in these receptor systems resulting in bladder dysfunction. Muscarinic receptor antagonists are the main therapeutic agents available for treatment of the overactive bladder, but whether their therapeutic effect involves actions at all three locations (detrusor, prejunctional, urothelial) has yet to be established.

Original languageEnglish
Pages (from-to)133-145
Number of pages13
JournalAutonomic and Autacoid Pharmacology
Volume22
Issue number3
DOIs
Publication statusPublished - Jun 2002
Externally publishedYes

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Muscarinic Receptors
Urinary Bladder
Smooth Muscle
Parasympathetic Nervous System
Urothelium
Overactive Urinary Bladder
Muscarinic Antagonists
Urination
Therapeutic Uses
Prostaglandin-Endoperoxide Synthases
Adenylyl Cyclases
Adrenergic Agents
Adrenergic Receptors
Cholinergic Agents
Nitric Oxide
Adenosine Triphosphate

Cite this

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abstract = "The parasympathetic nervous system is responsible for maintaining normal bladder function, contracting the bladder smooth muscle (detrusor) and relaxing the bladder outlet during micturition. Contraction of the bladder involves direct contraction via M3 receptors and an indirect 're-contraction' via M2-receptors whereby a reduction in adenylate cyclase activity reverses the relaxation induced by β-adrenoceptor stimulation. Muscarinic receptors are also located on the epithelial lining of the bladder (urothelium) where they induce the release of a diffusible factor responsible for inhibiting contraction of the underlying detrusor smooth muscle. The factor remains unidentified but is not nitric oxide, a cyclooxygenase product or adenosine triphosphate. Finally, muscarinic receptors are also located prejunctionally in the bladder on cholinergic and adrenergic nerve terminals, where M1-receptors facilitate transmitter release and M2 or M4-receptors inhibit transmitter release. In pathological states, changes may occur in these receptor systems resulting in bladder dysfunction. Muscarinic receptor antagonists are the main therapeutic agents available for treatment of the overactive bladder, but whether their therapeutic effect involves actions at all three locations (detrusor, prejunctional, urothelial) has yet to be established.",
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Muscarinic receptors of the urinary bladder : Detrusor, urothelial and prejunctional. / Chess-Williams, R.

In: Autonomic and Autacoid Pharmacology, Vol. 22, No. 3, 06.2002, p. 133-145.

Research output: Contribution to journalReview articleResearchpeer-review

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