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Related Experiment Videos

Plasma lipoprotein (a) concentrations in hypothyroid, euthyroid and hyperthyroid subjects.

C Erem1, O Değer, M Bostan

  • 1Department of Internal Medicine, Karadeniz Technical University Faculty of Medicine, Turkey.

Acta Cardiologica
|June 23, 1999
PubMed
Summary

Thyroid dysfunction affects lipid profiles, with hypothyroidism linked to higher lipoprotein (a) [Lp(a)] levels. Impaired metabolism of apo B and Lp(a) likely explains these changes in hypothyroid patients.

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Area of Science:

  • Endocrinology
  • Lipid Metabolism
  • Cardiovascular Research

Background:

  • Thyroid hormones critically regulate lipid metabolism, influencing pathways like the LDL receptor.
  • Existing knowledge suggests a link between thyroid status and lipoprotein (a) [Lp(a)] metabolism.

Purpose of the Study:

  • To investigate plasma Lp(a) concentrations in hypothyroid and hyperthyroid patients.
  • To explore correlations between Lp(a) levels and thyroid hormone status.

Main Methods:

  • Studied Lp(a) concentrations in 16 hypothyroid, 22 hyperthyroid, and 26 euthyroid subjects.
  • Analyzed plasma Lp(a) levels and their correlation with total T4.
  • Assessed lipid profiles including HDL-C, LDL-C, total cholesterol, and apo B.

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Main Results:

  • Plasma Lp(a) was significantly higher in hypothyroid patients compared to hyperthyroid patients.
  • Negative correlations were observed between plasma Lp(a) and total T4 in both hypo- and hyperthyroid groups.
  • Hypothyroid patients showed increased LDL-C and decreased HDL-C, while hyperthyroid patients exhibited decreased LDL-C and increased HDL-C.

Conclusions:

  • Plasma Lp(a) concentrations are elevated in hypothyroid individuals.
  • Impaired catabolism of apo B and Lp(a) likely underlies the observed relationship between hypothyroidism and increased Lp(a) levels.