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BJU Int. 2015 May;115(5):686-97. doi: 10.1111/bju.12876. Epub 2015 Jan 21.

Transient receptor potential channel modulators as pharmacological treatments for lower urinary tract symptoms (LUTS): myth or reality?

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1
Laboratory of Experimental Urology, Department of Development and Regeneration, KU Leuven, Leuven, Belgium; University Hospitals Leuven, Leuven, Belgium; TRP Research Platform Leuven (TRPLe), Leuven, Belgium.

Abstract

Transient receptor potential (TRP) channels belong to the most intensely pursued drug targets of the last decade. These ion channels are considered promising targets for the treatment of pain, hypersensitivity disorders and lower urinary tract symptoms (LUTS). The aim of the present review is to discuss to what extent TRP channels have adhered to their promise as new pharmacological targets in the lower urinary tract (LUT) and to outline the challenges that lie ahead. TRP vanilloid 1 (TRPV1) agonists have proven their efficacy in the treatment of neurogenic detrusor overactivity (DO), albeit at the expense of prolonged adverse effects as pelvic 'burning' pain, sensory urgency and haematuria. TRPV1 antagonists have been very successful in preclinical studies to treat pain and DO. However, clinical trials with the first generation TRPV1 antagonists were terminated early due to hyperthermia, a serious, on-target, side-effect. TRP vanilloid 4 (TRPV4), TRP ankyrin 1 (TRPA1) and TRP melastatin 8 (TRPM8) have important sensory functions in the LUT. Antagonists of these channels have shown their potential in pre-clinical studies of LUT dysfunction and are awaiting clinical validation.

KEYWORDS:

LUTS; TRP channel; TRPV1; TRPV4; afferent nerve; detrusor overactivity; urothelium

PMID:
25060242
DOI:
10.1111/bju.12876
[Indexed for MEDLINE]
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