Effect of fasting and feeding on apolipoprotein A-I kinetics in preβ1-HDL, α-HDL, and triglyceride-rich lipoproteins
The aim of this study was to compare the kinetics of apolipoprotein (apo)A-I during fed and fasted states in humans, and to determine to what extent the intestine contributes to apoA-I production. A stable isotope study was conducted to determine the kinetics of apoA-I in preβ 1 high-density lipopro...
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Veröffentlicht in: | Scientific reports 2020-09, Vol.10 (1), p.15585-15585, Article 15585 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | The aim of this study was to compare the kinetics of apolipoprotein (apo)A-I during fed and fasted states in humans, and to determine to what extent the intestine contributes to apoA-I production. A stable isotope study was conducted to determine the kinetics of apoA-I in preβ
1
high-density lipoprotein (HDL) and α-HDL. Six healthy male subjects received a constant intravenous infusion of
2
H
3
-leucine for 14 h. Subjects in the fed group also received small hourly meals. Blood samples were collected hourly during tracer infusion and then daily for 4 days. Tracer enrichments were measured by mass spectrometry and then fitted to a compartmental model using asymptotic plateau of very-low-density lipoprotein (VLDL) apoB100 and triglyceride-rich lipoprotein (TRL) apoB48 as estimates of hepatic and intestinal precursor pools, respectively. The clearance rate of preβ
1
-HDL-apoA-I was lower in fed individuals compared with fasted subjects (
p
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ISSN: | 2045-2322 2045-2322 |
DOI: | 10.1038/s41598-020-72323-w |