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[Hyperlipoproteinemia, the Apo-E genotype and bone density].

T Stulc1, R Ceska, A Horínek

  • 1III. interní klinika 1. LF UK a VFN, Praha.

Casopis Lekaru Ceskych
|August 23, 2000
PubMed
Summary

This study found no link between apolipoprotein E genotype and bone density. However, higher plasma lipid concentrations were negatively associated with bone mineral density in postmenopausal women.

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Area of Science:

  • Endocrinology and Metabolism
  • Bone Biology and Osteoporosis
  • Cardiovascular Disease and Atherosclerosis

Context:

  • Atherosclerosis and osteoporosis frequently coexist, particularly in older individuals, but are often considered distinct conditions.
  • Emerging epidemiological data suggest potential links between these diseases, prompting investigation into shared underlying factors.
  • Genetic, hormonal, and biochemical factors are being explored to explain the observed associations, with a focus on apolipoprotein E and lipid metabolism.

Purpose:

  • To investigate the hypothesis that apolipoprotein E genotype, plasma lipid levels, and bone mineral density are interconnected.
  • To examine the relationship between specific apolipoprotein E genotypes (E2/2 and E4/4 homozygotes) and bone health markers.
  • To assess correlations between lipid profiles (cholesterol, triglycerides) and bone mineral density in postmenopausal women and apolipoprotein E homozygotes.

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Summary:

  • The study analyzed bone mineral density and lipid profiles in 18 apolipoprotein E2/2 and E4/4 homozygotes and 130 postmenopausal women.
  • No significant differences in bone mineral density or bone turnover markers were found between apolipoprotein E2/2 and E4/4 homozygotes.
  • A negative correlation was observed between lumbar spine bone mineral density and cholesterol and triglyceride concentrations in both study groups.

Impact:

  • The findings do not support an association between apolipoprotein E genotype and bone mineral density or bone metabolism markers.
  • The observed negative correlation between plasma lipids and bone mineral density suggests a potential detrimental effect of hyperlipidemia on bone metabolism.
  • This research contributes to understanding the complex interplay between cardiovascular risk factors and skeletal health, particularly in aging populations.