{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T18:58:13Z","timestamp":1791917893724,"version":"4.3.4"},"reference-count":31,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2017,7,3]],"date-time":"2017-07-03T00:00:00Z","timestamp":1499040000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"Gester Foundation, Helsingborg, Sweden"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Neurourology and Urodynamics"],"published-print":{"date-parts":[[2018,2]]},"abstract":"<jats:sec><jats:title>Aims<\/jats:title><jats:p>Mechanoafferent and peristaltic mechanisms of the human ureter involve transient receptor potential V1 (TRPV1)\u2010 and purinoceptor\u2010mediated functions. Hydrogen sulphide, an endogenous TRPA1 ligand, is linked to inhibitory neurotransmission of the pig ureter. No information is available on TRPA1 activity in the human ureter. We therefore examined the distribution and function of TRPA1 in the human ureter.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Expression of TRPA1 in human ureter tissue was studied by Western blot and immunofluorescence. The TRPA1 distribution was compared to TRPV1, calcitonin gene related peptide (CGRP), tyrosine hydroxylase (TH), and vimentin. Effects of the TRPA1 agonists allyl isothiocyanate (AI), cinnamaldehyde (CA), sodium hydrogen sulfide (NaHS), and capsaicin (TRPV1 agonist) on human ureter preparations were studied in organ baths.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>By Western blot, bands were detected at the expected molecular weight for TRPA1. TRPA1\u2010 and TRPV1\u2010immunoreactivities were located on CGRP\u2010positive nerves, but not on TH\u2010positive nerves. TRPA1 was also located in vimentin\u2010positive interstitial cells. In functional experiments, neither of the TRPA1\u2010agonists (1\u2010100\u2009\u03bcM) had any direct effects on ureter tension (baseline\/potassium\u2010induced contractions). However, CA, AI, NaHS, and capsaicin (10\u2009\u03bcM) decreased (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.01\u20100.05) tetrodotoxin\u2010sensitive electrically induced (2,4,8,16,32\u2009Hz) contractions. Inhibitory activities were 50\u201061% (CA), 30\u201056% (AI), 30\u201040% (NaHS), and 37\u201067% (Capsaicin).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>In the human ureter, TRPA1 is located to sensory nerves and interstitial cells. TRPA1 agonists inhibited electrically induced contractions but had no direct effect on smooth muscle tension of the human ureter. A role for TRPA1 in modulating neurotransmission and possibly peristalsis of the human ureter is proposed.<\/jats:p><\/jats:sec>","DOI":"10.1002\/nau.23338","type":"journal-article","created":{"date-parts":[[2017,7,3]],"date-time":"2017-07-03T13:28:59Z","timestamp":1499088539000},"page":"600-608","source":"Crossref","is-referenced-by-count":10,"title":["Transient receptor potential a1 (<scp>TRPA1<\/scp>) agonists inhibit contractions of the isolated human ureter"],"prefix":"10.1002","volume":"37","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9144-9289","authenticated-orcid":false,"given":"Philipp","family":"Weinhold","sequence":"first","affiliation":[{"name":"Department of Urology LMU Munich Germany"},{"name":"Department of Clinical and Experimental Pharmacology Lund Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martin","family":"Hennenberg","sequence":"additional","affiliation":[{"name":"Department of Urology LMU Munich 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