epithelial ion transport

GSK137647A (GSK 137647) 是一种选择性FFA4激动剂，作用于人类和大小鼠FFA4的pEC50分别为6.3、6.1和6.2。

ARN23765 是一种 F508del-CFTR 校正剂，在人支气管上皮细胞中的EC50为 38 pM。它能够改善细胞膜中 F508del-CFTR 的成熟和功能，影响离子的运输与分泌，从而纠正囊性纤维化 (CF) 的病理机制。

Butyrylcholine is a novel colonic ion transport regulator produced by colonic epithelial cells that stimulates nicotine and muscarinic receptors.

20-carboxy Arachidonic acid (20-COOH-AA) is the major metabolite of 20-HETE that is produced in renal tubular epithelial, endothelial, and microvascular smooth muscle cell cultures. This ω-oxidation conversion can take place using purified alcohol dehydrogenases three and four or by microsomes containing recombinant human CYP4F3B. Like 20-HETE, 20-COOH-AA inhibits ion transport in the kidneys. It also produces vasorelaxation of porcine coronary microvessels constricted with endothelin. 20-COOH-AA binds to isolated ligand binding domains of peroxisome proliferator-activated receptor α (PPARα) (Kd = 0.87 ± 0.12 μM) and PPARγ (Kd = 1.7 ± 0.5 μM), and is a dual activator of PPARα and PPARγ in a transiently transfected COS-7 cell reporter system.