Title : l-ornithine activates Ca2+ signaling to exert its protective function on human proximal tubular cells.

Pub. Date : 2020 Mar

PMID : 31770578






3 Functional Relationships(s)
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1 While the mechanism in unknown, we tested the effect of l-ornithine, since it is abundantly present in PT luminal fluid and can activate calcium-sensing receptor (CaSR), a GPCR, expressed in the PT luminal membrane. polyornithine calcium sensing receptor Homo sapiens
2 We used human kidney 2 (HK-2) cells, a PT cells line, and performed Ca2+ imaging and electrophysiological experiments to show that l-ornithine has a concentration-dependent effect on CaSR activation. polyornithine calcium sensing receptor Homo sapiens
3 Moreover, l-ornithine-activation of CaSR can reverse ROS production and apoptosis via mitogen-activated protein kinase p38 activation. polyornithine calcium sensing receptor Homo sapiens