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Marrow Fat Quality Differences by Sex in Healthy Adults
Jamilly G Maciel1, Iana M de Araújo1, Adriana L Carvalho1
1Department of Internal Medicine, Ribeirao Preto Medical School, University of Sao Paulo (USP), Ribeirão Preto, Brazil.
Summary
Bone marrow adiposity (BMAT) and bone mineral density (BMD) decrease with age. Women have higher unsaturated lipids in bone marrow than men, despite similar BMD.
Area of Science:
- Biomedical Imaging
- Bone Physiology
- Metabolic Research
Background:
- Bone marrow adiposity (BMAT) is linked to bone mass.
- Assessing BMAT quantity and quality noninvasively is crucial.
Purpose of the Study:
- To quantitatively and qualitatively analyze BMAT.
- To investigate BMAT's association with bone mineral density (BMD) in healthy adults.
Main Methods:
- 1.5 T 1H magnetic resonance spectroscopy of the lumbar spine.
- Dual-energy X-ray absorptiometry for BMD measurement.
- Correlation analysis of lipid fractions, BMD, and age.
Main Results:
- BMD and BMAT inversely correlate with age, with saturated lipids showing a stronger correlation.
- Women exhibit significantly higher unsaturated lipids (UL) in bone marrow than men.
- Despite similar BMI and BMD, men and women show distinct bone marrow lipid profiles.
Conclusions:
- Bone marrow lipid composition differs between sexes, even with comparable BMD and BMI.
- Higher UL in women warrants further investigation into its role in bone health.
- Findings offer new insights into the complex factors influencing bone integrity.
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