Type

Journal Article

Authors

D C Winter
A W Baird
M M Skelly
A M Hogan
D Collins

Subjects

Pharmacology

Topics
administration dosage intestinal mucosa humans pharmacology metabolism chlorides female enzyme linked immunosorbent assay dose response relationship drug analogs derivatives colon cyclic amp male diffusion chambers culture dinoprost al 8810 electrophysiology

Cyclic AMP-mediated chloride secretion is induced by prostaglandin F2alpha in human isolated colon. (2009)

Abstract Prostaglandin F(2alpha) (PGF(2alpha)) is implicated in the pathogenesis of inflammatory bowel disease and colorectal cancer. This study investigates the effects of PGF(2alpha) on electrophysiological parameters in isolated human colonic mucosa. Ion transport was measured as changes in short-circuit current across human colonic epithelia mounted in Ussing chambers. Colonic crypts were isolated by calcium chelation and cyclic adenosine monophosphate (cAMP) was measured by ELISA. PGF(2alpha) stimulated chloride secretion in a concentration-dependent manner with an EC(50) of 130 nM. The PGF(2alpha) induced increase in chloride secretion was inhibited by AL8810 (10 microM), a specific PGF(2alpha) receptor antagonist. In addition, PGF(2alpha) (1 microM) significantly increased levels of cAMP in isolated colonic crypts. PGF(2alpha) stimulated chloride secretion in samples of human colon in vitro through a previously unrecognizd cAMP-mediated mechanism. These findings have implications for inflammatory states.
Collections Ireland -> University College Dublin -> PubMed

Full list of authors on original publication

D C Winter, A W Baird, M M Skelly, A M Hogan, D Collins

Experts in our system

1
Desmond C. Winter
University College Dublin
Total Publications: 53
 
2
Alan W. Baird
University College Dublin
Total Publications: 70
 
3
Denis M Collins
Dublin City University
Total Publications: 26