title: Pharmacology of the lower urinary tract.
abstract: Pharmacology of the lower urinary tract provides the basis for medical treatment of lower urinary tract symptoms (LUTS). Therapy of LUTS addresses obstructive symptoms (frequently explained by increased prostate smooth muscle tone and prostate enlargement) in patients with benign prostate hyperplasia (BPH) and storage symptoms in patients with overactive bladder (OAB). Targets for medical treatment include G protein-coupled receptors (α1-adrenoceptors, muscarinic acetylcholine receptors, β3-adrenoceptors) or intracellular enzymes (5α-reductase; phosphodiesterase-5, PDE5). Established therapies of obstructive symptoms aim to induce prostate smooth muscle relaxation by α1-blockers or PDE5 inhibitors, or to reduce prostate growth and volume with 5α-reductase inhibitors. Available options for treatment of OAB comprise anitmuscarinics, β3-adrenoceptor agonists, and botulinum toxin A, which improve storage symptoms by inhibition of bladder smooth muscle contraction. With the recent approval of β3-antagonists, PDE inhibitors, and silodosin for therapy of LUTS, progress from basic research of lower urinary tract pharmacology was translated into new clinical applications. Further targets are in preclinical stages of examination, including modulators of the endocannabinoid system and transient receptor potential (TRP) channels.
authors.affiliation: Department of Urology, Ludwig-Maximilans University, Munich, Germany.
authors.forename: Martin
authors.initials: M
authors.lastname: Hennenberg
authors.affiliation: Department of Urology, Ludwig-Maximilans University, Munich, Germany.
authors.forename: Christian G
authors.initials: CG
authors.lastname: Stief
authors.affiliation: Department of Urology, Ludwig-Maximilans University, Munich, Germany.
authors.forename: Christian
authors.initials: C
authors.lastname: Gratzke
keywords: 5 alpha reductase; Alpha1 adrenoreceptor; arginine vasopressors; endocannabinoids; muscarinic receptors; phosphodiesterase; vitamin D
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