prostanoid

Prostanoids are a group of naturally occurring lipid compounds that act as chemical messengers in humans and animals. They play a crucial role in regulating essential physiological processes and mediating inflammatory and immune responses. Discovered in human semen in 1935, prostaglandins are synthesized from unsaturated fatty acids containing a five-carbon ring, derived from arachidonic acid.1

These potent substances are found in nearly every tissue and can have diverse effects depending on the tissue and the specific receptor they bind to. Prostanoids are involved in processes such as vasodilation, blood clotting, smooth muscle contraction, and inflammation. For example, some prostaglandins dilate blood vessels, while others, like thromboxanes, promote blood clot formation. Drugs that inhibit prostaglandin synthesis, such as aspirin and ibuprofen, are used to treat pain and inflammation.12