Abstract:
:Luminal hydrogen sulfide (H(2)S), a gasotransmitter, causes colonic pain / referred hyperalgesia in mice, most probably via activation of T-type Ca(2+) channels. Here we analyzed the mechanisms for H(2)S-induced facilitation of colonic pain signals. Intracolonic administration of NaHS, an H(2)S donor, evoked visceral pain-like nociceptive behavior and referred hyperalgesia in mice, an effect abolished by NNC 55-0396, a selective T-type Ca(2+)-channel blocker, or by knockdown of Ca(v)3.2. AP18, a TRPA1 blocker, also prevented the NaHS-induced colonic pain and referred hyperalgesia. These findings demonstrate that H(2)S-induced colonic pain and referred hyperalgesia require activation of both Ca(v)3.2 and TRPA1 channels in mice.
journal_name
J Pharmacol Scijournal_title
Journal of pharmacological sciencesauthors
Tsubota-Matsunami M,Noguchi Y,Okawa Y,Sekiguchi F,Kawabata Adoi
10.1254/jphs.12086scsubject
Has Abstractpub_date
2012-01-01 00:00:00pages
293-6issue
3eissn
1347-8613issn
1347-8648pii
DN/JST.JSTAGE/jphs/12086SCjournal_volume
119pub_type
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