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Related Experiment Video

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Culture of myeloid dendritic cells from bone marrow precursors
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Type 2 diabetes affects bone cells precursors and bone turnover.

Francesca Sassi1, Ilaria Buondonno1, Chiara Luppi1

  • 1Department of Medical Science, Gerontology and Bone Metabolic Diseases, University of Torino, Corso Bramante 88/90, 10126, Torino, Italy.

BMC Endocrine Disorders
|August 10, 2018
PubMed
Summary

Type 2 diabetes (T2DM) in women is linked to immature bone cell precursors and lower bone turnover, with altered RANKL and DKK-1 cytokine levels. Bone density and quality remain unchanged, possibly due to BMI matching.

Keywords:
Bone densityDiabetesOsteoblastOsteoclastReceptor activator of nuclear factor κBSclerostin

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Area of Science:

  • Endocrinology
  • Bone Biology
  • Metabolic Diseases

Background:

  • Type 2 diabetes mellitus (T2DM) significantly impacts systemic health, including potential effects on bone metabolism.
  • Understanding T2DM's influence on bone cell precursors and turnover is crucial for managing skeletal health in diabetic patients.

Purpose of the Study:

  • To investigate the effects of T2DM on bone cell precursors, bone turnover markers, and key regulatory cytokines.
  • To compare bone mineral density (BMD) and trabecular bone score (TBS) between T2DM patients and healthy controls.

Main Methods:

  • A cohort of 21 T2DM women and 21 age- and BMI-matched controls were analyzed.
  • Measurements included bone cell precursors, Receptor Activator of Nuclear Factor κB (RANKL), Osteoprotegerin (OPG), Sclerostin (SCL), Dickoppf-1 (DKK-1), BMD, and TBS.
  • Statistical analysis involved ANOVA and Mann-Whitney/Kruskal-Wallis tests.

Main Results:

  • T2DM patients exhibited decreased RANKL and increased DKK-1 levels.
  • Bone turnover was lower in T2DM patients, with more immature bone precursor cells.
  • Osteoclast precursors increased, while osteoblast precursors decreased in T2DM patients.

Conclusions:

  • T2DM is associated with altered bone cell precursor profiles and reduced bone turnover, characterized by decreased RANKL and increased DKK-1.
  • Despite cellular changes, BMD and TBS were not significantly different, potentially due to BMI matching.
  • These findings highlight T2DM-specific alterations in bone metabolism that warrant further investigation.