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Related Experiment Videos

Variations in high-density lipoprotein subclasses during the menstrual cycle

P T Williams1, M A Austin, R M Krauss

  • 1Life Sciences Division, Lawrence Berkeley Laboratory, Berkeley, CA 94720.

Metabolism: Clinical and Experimental
|November 1, 1994
PubMed
Summary

Plasma high-density lipoprotein-2a (HDL2a) levels were higher in the luteal phase compared to the follicular phase in premenopausal women. No significant changes were observed in other HDL subclasses during the menstrual cycle.

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Area of Science:

  • Cardiovascular Health
  • Endocrinology
  • Lipid Metabolism

Background:

  • High-density lipoprotein (HDL) plays a crucial role in reverse cholesterol transport.
  • HDL subclasses vary in size and composition, potentially influencing their atheroprotective functions.
  • Menstrual cycle phases can impact various physiological parameters, including lipid profiles.

Purpose of the Study:

  • To investigate the variations in specific high-density lipoprotein subclasses during different phases of the menstrual cycle.
  • To determine if high-density lipoprotein-2a (HDL2a) levels differ between the luteal and follicular phases in healthy premenopausal women.

Main Methods:

  • The study included 41 healthy premenopausal women.
  • Plasma samples were collected and analyzed during the follicular and luteal phases of the menstrual cycle.

Related Experiment Videos

  • Quantification of high-density lipoprotein-2a (HDL2a), HDL2b, and HDL3 subclasses was performed.

    • Main Results:

    • Plasma HDL2a levels were significantly elevated during the luteal phase compared to the follicular phase.
    • No statistically significant variations were found in HDL2b or HDL3 subclasses between the two menstrual cycle phases.
    • The findings suggest a phase-specific modulation of certain HDL subclasses.

    Conclusions:

    • HDL2a levels exhibit significant fluctuation across the menstrual cycle in premenopausal women.
    • These findings contribute to understanding the dynamic nature of HDL subclasses and their potential hormonal influences.
    • Further research is warranted to explore the clinical implications of these cyclical variations in HDL2a.