Composition of plasmalogens in serum lipoproteins from patients with non-alcoholic steatohepatitis and their susceptibility to oxidation

Clinica Chimica Acta; International Journal of Clinical Chemistry
Akiko IkutaHitoshi Chiba

Abstract

Plasmalogens are ether phospholipids (PL) with an alkenyl group including vinyl ether bound at the sn-1 position and a polyunsaturated fatty acid bound at the sn-2 position, and are susceptible to oxidation. To date, there are no reports on the relationship between plasmalogen in serum lipoproteins and non-alcoholic steatohepatitis (NASH), caused by multiple factors including oxidative stress. Here, we have investigated the distribution of plasmalogens in serum lipoproteins isolated from NASH patients and healthy volunteers. Serum lipoproteins were separated by gel-filtration chromatography, and analyzed for ethanolamine and choline plasmalogens using liquid chromatography-mass spectrometry. Both plasmalogen levels were higher in HDL than in VLDL or LDL. The plasmalogens/PL ratio was significantly lower in NASH than controls, for all lipoprotein fractions. Ethanolamine plasmalogens containing 20:4 and 22:6 at the sn-2 position and choline plasmalogens containing 16:0 at the sn-1 position were predominant in each group. In oxidation test using LDL from healthy serum, both types of plasmalogens were decreased during the early stages of oxidation. Plasmalogens could be a potential biomarker for evaluating the early stages of oxida...Continue Reading

Citations

Jun 11, 2020·The American Journal of Clinical Nutrition·Paulette D ChandlerKathryn M Rexrode
Dec 7, 2020·Electrophoresis·Asmin AndriesAnn Van Schepdael
Nov 24, 2021·Hepatology Communications·Jeremy P KoelmelVasilis Vasiliou

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