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Protocol for efficient plasma sampling for low density lipoprotein turnover studies.

N A Le, H N Ginsberg, W V Brown

    Journal of Lipid Research
    |December 1, 1984
    PubMed
    Summary
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    This study simplifies low-density lipoprotein (LDL) turnover analysis by reducing blood sample frequency. A new 10-sample schedule accurately estimates LDL apolipoprotein B fractional catabolic rate, easing patient burden.

    Area of Science:

    • Lipid metabolism research
    • Cardiovascular disease biomarker analysis

    Background:

    • Radiolabeled low-density lipoprotein (LDL) is crucial for studying LDL apolipoprotein B (apoB) turnover.
    • Current sampling schedules (20-25 samples over 14 days) are burdensome for subjects and researchers.

    Purpose of the Study:

    • To evaluate reduced blood sampling schedules for accurately estimating LDL apoB fractional catabolic rate (FCR).
    • To improve the feasibility and acceptance of LDL turnover studies.

    Main Methods:

    • Analysis of 36 LDL decay curve datasets from diverse lipoprotein phenotypes.
    • Testing of reduced sampling intervals over a 14-day period.

    Main Results:

    • A specific 10-sample schedule over 14 days accurately determines LDL apoB FCR.

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  • Reduced sampling significantly decreases the burden on participants and investigators.

    • Conclusions:

    • A simplified 10-sample protocol enables accurate LDL apoB FCR estimation.
    • This optimized schedule facilitates outpatient LDL turnover studies in larger cohorts.