Type 1 diabetes

Diabetes Risk Factors and Bone Microarchitecture as Assessed by High-Resolution Peripheral Quantitative Computed Tomography in Adults With Long-standing Type 1 Diabetes

Diabetes CarePublished Cross-sectional study

Authors' conclusion

Type 1 diabetes is associated with lower BMD, larger bone area, and poorer trabecular microarchitecture. Among participants with type 1 diabetes, suboptimal glycemic control, AGE accumulation, and microvascular complications are associated with deficits in bone microarchitecture and lower BMD.

Study context

Population
Adults with long-standing T1D (>30 years of follow-up) from DCCT/EDIC and controls without diabetes; High-resolution peripheral quantitative computed tomography (HR-pQCT) of distal radius and distal and diaphyseal tibia
Participants
183 vs 94
Exposure
T1D vs controls without diabetes
  • EDICn = 183
  • Controln = 94reference
Outcome
Bone geometry and microarchitecture (HR-pQCT)
Methodological detailsembedded in a long-term observational study
  • Embedded in a long-term observational study

Main finding

As reported in the abstract

EDIC vs ControlEstimate (95% CI)P value
EDIC
difference in total BMD, distal radius −7.9 %(−15.2% to −0.6%)
P = 0.030
EDIC
difference in total BMD, distal tibia −11.3 %(−18.5% to −4.2%)
P = 0.001
Larger with EDIC
difference in total area, distal radius 4.7 %(0.5%–8.8%)
P = 0.030
Larger with EDIC
difference in total area, distal tibia 5.9 %(2.1%–9.8%)
P = 0.003
Larger with EDIC
difference in total area, diaphyseal tibia 3.4 %(0.8%–6.1%)
P = 0.011

Observational data: associations, not effects.

Further findings

Diabetes risk factors and bone within EDIC

Higher HbA1c, AGE levels and macroalbuminuria associated with lower total bone mineral density (BMD)
Macroalbuminuria associated with larger total area and lower cortical thickness at distal radius
Higher HbA1c and AGE levels, lower GFR, peripheral neuropathy and retinopathy associated with deficits in trabecular microarchitecture

Original publication

Diabetes Risk Factors and Bone Microarchitecture as Assessed by High-Resolution Peripheral Quantitative Computed Tomography in Adults With Long-standing Type 1 Diabetes. Diabetes Care. Published 29 November 2023. doi:10.2337/dc23-0839

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