What are steroid hormones? Steroid hormones are a group of compounds with a cyclopentane polyhydrophenanthrene structure formed by cholesterol catalyzed by cytochrome P450 enzymes. Steroid hormones are divided into four main groups: progesterone, corticosteroid, estrogen, and androgen. Steroid hormones play an important role in regulating human metabolism, maintaining the stability of the internal environment, growth, […]

Phosphatidylcholine (PC) consists of a glycerol group, a fatty acid group, a phosphate group and choline. The fatty acid groups often include palmitic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, and arachidonic acid. Function and application of phosphatidylcholine PC not only provides essential phosphorus for human growth and development, but also is a major […]