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St. George Hospital, London

Portal vein myocyte Ca2+ channels studied, facilitatory effect defined

Published in Law and Health Weekly, October 1st, 2005

A recent study published from England has reported on the facilitatory effect of inositol 1,4,5-trisphosphate (Ins(1,4,5)P-3) on store-operated Ca2+-permeable cation channels (SOCs) in rabbit portal vein myocytes.

"In rabbit portal vein smooth muscle cells, store-operated SOCs display multi-modal gating mechanisms. SOCs are activated by depletion of intracellular Ca2+ stores but also may be stimulated in a store-independent manner by noradrenaline acting on alpha-adrenoceptors and by diacylglycerol (DAG) via protein kinase C (PKC).

"In the present study we have investigated whether (Ins(1,4,5)P-3) modulates SOC activity in...

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