Ontology highlight
ABSTRACT:
SUBMITTER: Saslowsky DE
PROVIDER: S-EPMC2626619 | biostudies-literature | 2009 Jan
REPOSITORIES: biostudies-literature
Saslowsky David E DE Tanaka Noriyuki N Reddy Krishna P KP Lencer Wayne I WI
FASEB journal : official publication of the Federation of American Societies for Experimental Biology 20080926 1
Sphingomyelinases (SMases) hydrolyze membrane sphingomyelin to ceramide and are expressed by diverse host and microbial cell types populating mucosal surfaces. Exogenous bacterial SMase acts on the basolateral membrane of polarized human intestinal epithelial cells to repress the cAMP-induced Cl(-) secretory response, but how this occurs is unknown. We show here that SMase acts by down-regulating a cAMP-gated basolateral membrane K(+) conductance. Neither phosphocholine, ceramide-1-phosphate, no ...[more]