Prostaglandins (PGs) are unsaturated fatty acids synthesized from arachidonic acid in the human body. According to their structure, PGs are classified into types A, B, C, D, E, F, G, H, and I. The vast majority of renal PGs are produced by interstitial cells and collecting duct cells in the papillae of the renal medulla. The human seminal vesicles, lungs, kidneys, brain, and...