Human colonic mucosa possesses a mixed population of 5-HT receptors.

Abstract:

:The aim of this study was to characterise the 5-HT receptor(s) mediating secretory responses of isolated human colonic mucosa to 5-HT. Sheets of muscle-stripped mucosa from proximal (ascending) and distal (sigmoid) human colon were set up in Ussing chambers for measurement of short-circuit current (Isc). Serosal application of 5-HT led to non-neural, concentration-dependent increases in Isc. Desensitisation to 5-HT was observed with ascending and sigmoid colonic mucosa. Using selective 5-HT antagonists we have shown that 5-HT induces secretion in sigmoid colon via a 5-HT2A receptor. In ascending colon a combination of 5-HT2A and 5-HT4 receptors appears to be involved.

journal_name

Eur J Pharmacol

authors

Borman RA,Burleigh DE

doi

10.1016/0014-2999(96)00466-9

subject

Has Abstract

pub_date

1996-08-15 00:00:00

pages

271-4

issue

3

eissn

0014-2999

issn

1879-0712

pii

0014299996004669

journal_volume

309

pub_type

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