Triglyceride (TG) is a component of lipid, which is formed by glycerol and three fatty acids. Lipid composition is complex, including cholesterol, phospholipids, fatty acids and a small amount of other lipids in addition to triglycerides. Under normal circumstances, the triglyceride in plasma keeps a dynamic balance.

Extended data

1, the role of triglycerides

Triglyceride is the main energy storage of human body, which will be decomposed according to the needs of the body. Most tissues can use the decomposition products of triglycerides to supply energy, and tissues such as liver and fat can also synthesize triglycerides and store them in adipose tissues.

Although triglyceride has many physiological functions, too much triglyceride will lead to the change of adipocyte function and the increase of blood viscosity, which will increase the risk of coronary heart disease. Moreover, high triglycerides in the blood can also cause diseases such as acute pancreatitis.

2, the source of triglycerides

There are two main sources of triglycerides in plasma.

① Exogenous: Fat ingested from food is absorbed by intestinal mucosa under the action of bile acid and lipase, and triglycerides are synthesized in intestinal mucosal epithelial cells.

② Endogenous: The triglyceride synthesized by oneself in the body is mainly in the liver, followed by adipose tissue. The main function of triglycerides is to supply and store energy, and also to fix and protect internal organs. The determination of serum triglyceride is a routine item of blood lipid analysis.

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