Determination of Significance:
Hepatic lipase (HL) is a lipolytic enzyme synthesized in liver parenchymal cells. It is present on the surface of the liver sinusoidal endothelial cells and the surface of the hepatocyte microvilli in the sinusoidal space, and can hydrolyze various lipoproteins. The triglycerides (TG) and phospholipids (PL) in the medium change the size and density of various lipoprotein particles. When the HL and its activity in the plasma increasing, it can lead to low density lipoprotein (LDL) levels in the plasma, increase and accelerate the occurrence and development of atherosclerosis.
Measurement Principle:
HL hydrolyzes α-naphthyl acetate to produce α-naphthol, which can form a purple-red azo compound with fast blue B salt. It has a characteristic absorption peak at 595 nm, and its color depth is positively correlated with liver esterase activity within a certain range.
Self Provided:
Spectrophotometer/ microplate reader, water bath, balance, centrifuge, adjustable transferpettor, micro glass cuvette/ 96 well flat-bottom plate, mortar/homogenizer/ sonicator, ice and distilled water.
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