Quantification of 16 bile acids in bile and serum based on LC-MS/MS
A bile acid and serum technology, applied in the field of mass spectrometry detection, can solve problems such as difficulty in simultaneous separation and detection
Inactive Publication Date: 2018-01-23
上海可力梅塔生物医药科技有限公司 +3
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Problems solved by technology
Because the structural properties of bile acids and their conjugates are very different, for example, unconjugated bile acids have poor water solubility and pKa values are generally between 3 and 5, while conjugated bile acids have better water solubility and lower pKa. Due to the low concentration of bile acids in serum and the possible presence of multiple isomers at the same time, it is very difficult to separate and detect them at the same time
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Embodiment 1
[0056] Using the method as described in the present invention, the serum bile acid content of 63 normal people has been measured, see Table 5, including the maximum value and minimum value of the average value and 2.5%-97.5% normal population, which is consistent with the reference value reported in the literature The range is basically the same, indicating that the method is accurate. At the same time, in addition to being applicable to the detection of bile acids in serum, the method is also applicable to the detection of diluted bile samples, and has universal applicability.
[0057] Table 5 Serum bile acid assay results (n=63)
[0058]
[0059]
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The invention discloses quantification of 16 bile acids in the bile and serum based on LC-MS / MS. Specifically, the invention provides a detection kit for bile acids through a high performance liquid chromatography and mass spectrometry method. The kit comprises a quality control substance, an isotope internal standard extracted liquid, a diluent, a conversion liquid, a reconstitution fluid, a mobile phase additive A and a mobile phase additive B. The kit can be used for detecting 16 bile acids, respectively, and is less in time consumption and high in detection efficiency.
Description
technical field [0001] The invention relates to the field of mass spectrometry detection, in particular to various detection kits for bile acids by high performance liquid chromatography mass spectrometry. Background technique [0002] Bile acid is the product of cholesterol oxidation by cytochrome in the liver, and plays an important role in the digestion and absorption of fat in the intestine and the maintenance of cholesterol balance in the body. Bile acid is the main component of bile and one of the important physiological media in the human body environment, mainly including cholic acid, chenodeoxycholic acid, deoxycholic acid, lithocholic acid and ursodeoxycholic acid, and these five kinds of free bile acid counterparts glycine and taurine-binding bile acids. In the bile and peripheral blood of healthy people, the components of the bile acid spectrum are relatively constant; when various diseases such as cholelithiasis, atherosclerosis, and hypertension occur, it will...
Claims
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IPC IPC(8): G01N30/02
Inventor 朱监宝官培龙郭孟磊
Owner 上海可力梅塔生物医药科技有限公司