Title |
The roles of acid-sensing ion channel 1a and ovarian cancer G protein-coupled receptor 1 on passive Mg2+ transport across intestinal epithelium-like Caco-2 monolayers
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Published in |
The Journal of Physiological Sciences, December 2013
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DOI | 10.1007/s12576-013-0301-8 |
Pubmed ID | |
Authors |
Narongrit Thongon, Pattamaporn Ketkeaw, Chanin Nuekchob |
Abstract |
Intestinal passive Mg(2+) absorption, which is vital for normal Mg(2+) homeostasis, has been shown to be regulated by luminal proton. We aimed to study the regulatory role of intestinal acid sensors in paracellular passive Mg(2+) transport. Omeprazole enhanced the expressions of acid-sensing ion channel 1a (ASIC1a), ovarian cancer G protein-coupled receptor 1 (OGR1), and transient receptor potential vanilloid 4 in Caco-2 cells. It also inhibited passive Mg(2+) transport across Caco-2 monolayers. The expression and activation of OGR1 resulted in the stimulation of passive Mg(2+) transport via phospholipase C- and protein kinase C-dependent pathways. ASIC1a activation, on the other hand, enhanced apical HCO3 (-) secretion that led, at least in part, by a Ca(2+)-dependent pathway to an inhibition of paracellular Mg(2+) absorption. Our results provided supporting evidence for the roles of OGR1 and ASIC1a in the regulation of intestinal passive Mg(2+) absorption. |
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Geographical breakdown
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United States | 1 | 33% |
Unknown | 2 | 67% |
Demographic breakdown
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Scientists | 2 | 67% |
Members of the public | 1 | 33% |
Mendeley readers
Geographical breakdown
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Unknown | 12 | 100% |
Demographic breakdown
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Researcher | 3 | 25% |
Student > Master | 3 | 25% |
Student > Ph. D. Student | 2 | 17% |
Other | 1 | 8% |
Unknown | 3 | 25% |
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Biochemistry, Genetics and Molecular Biology | 1 | 8% |
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Neuroscience | 1 | 8% |
Other | 2 | 17% |
Unknown | 4 | 33% |