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4-day dietary effect of fast food vs Mediterranean diet to HDL lipidome

ABSTRACT: In this randomized order cross-over study, ten healthy subjects consumed a Mediterranean (Med) and a fast food (FF) diet for 4 days, with a 4-day wash-out between treatments. Lipidomic composition was analyzed in isolated HDL fractions by an untargeted LC-MS method with 15 internal standards. HDL PE content was increased by FF diet, and 41 out of 170 lipid species were differentially affected by diet. Saturated fatty acids (FA) and odd chain FA were enriched after FF diet, while very-long chain FA and unsaturated FA were enriched after Med diet. The composition of PC, TG and CE were significantly altered to reflect the FA composition of the diet whereas the composition of SM and ceramides were generally unaffected, indicating that glycerolipids may be sensitive markers of dietary intake, whereas sphingolipids are more indicative of non-dietary factors. Results from this study indicate that the HDL lipidome is widely remodeled within 4 days of diet change and that certain lipid classes are more sensitive markers of diet whereas other lipid classes are better indicators of non-dietary factors

ORGANISM(S): Human Homo Sapiens

TISSUE(S): Blood

SUBMITTER: Angela Zivkovic

PROVIDER: ST001151 | MetabolomicsWorkbench | Thu Mar 14 00:00:00 GMT 2019

REPOSITORIES: MetabolomicsWorkbench

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