Volume 21 Issue 1
Jan.  2023
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GAO Jing-jing, LI Cong, GAO Lei, BAO Peng, FEI Ai-hua, GAO Yan-hong. Changes in bone mineral density, bone metabolism and its influencing factors in early-onset type 2 diabetes mellitus[J]. Chinese Journal of General Practice, 2023, 21(1): 24-27. doi: 10.16766/j.cnki.issn.1674-4152.002803
Citation: GAO Jing-jing, LI Cong, GAO Lei, BAO Peng, FEI Ai-hua, GAO Yan-hong. Changes in bone mineral density, bone metabolism and its influencing factors in early-onset type 2 diabetes mellitus[J]. Chinese Journal of General Practice, 2023, 21(1): 24-27. doi: 10.16766/j.cnki.issn.1674-4152.002803

Changes in bone mineral density, bone metabolism and its influencing factors in early-onset type 2 diabetes mellitus

doi: 10.16766/j.cnki.issn.1674-4152.002803
Funds:

 82071575

 20ZR1435100

  • Received Date: 2022-03-24
    Available Online: 2023-04-07
  •   Objective  To analyse the changes in bone mineral density, bone metabolism and its influencing factors in early-onset type 2 diabetes mellitus (T2DM).  Methods  We performed a retrospective analysis of 201 patients with T2DM who were diagnosed with diabetes aged ≤ 40 years old in the Department of Endocrinology, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine from January 2018 to December 2021. These subjects were classified as the early-onset group. In addition, we selected 107 non-diabetic patients matched with the early-onset group with regard to age and sex ratio as the control group. The general clinical data, biochemical indexes, mean bone mineral density (BMD) of lumbar spine L1-4 and bone metabolism markers were compared between the two groups.  Results  (1) After correcting the BMI, no statistically significant difference in BMD was observed between the early-onset group and control group (F=1.004, P>0.05). The levels of type Ⅰ procollagen amino-terminal peptide, osteocalcin, 25(OH)D3 and parathyroid hormone of the early-onset group were lower than those in the control group (t=3.941, 6.556, 7.123, 4.620, all P < 0.05), whereas no significant difference in β-carboxyl terminal peptide (β-CTX) was found between the two groups (t=1.684, P>0.05). (2) Correlation analysis results showed that BMD was independently and negatively correlated with age (95% CI: -0.007 to -0.001, P=0.012) but was independently and positively correlated with BMI (95% CI: 0.004 to 0.014, P=0.001) and HbA1c (95% CI: 0.002 to 0.021, P=0.014). β-CTX was independently and negatively correlated with age (95% CI: -0.013 to -0.003, P=0.001) and TC (95% CI: -0.079 to -0.015, P=0.004). In addition, the female gender was an independent risk factor for decreased β-CTX (95% CI: -0.177 to -0.020, P=0.014). P1NP was independently and negatively correlated with age (95% CI: -0.831 to -0.137, P=0.007), FPG (95% CI: -1.815 to -0.333, P=0.005) and TG (95% CI: -0.635 to -0.508, P=0.004).  Conclusion  There is no significant difference in BMD amongst patients with early-onset type 2 diabetes compared with non-diabetic people, but the markers of bone formation decrease. The age, gender, BMI, blood glucose and blood lipid levels are independent influencing factors of changes in BMD and bone metabolism in patients.

     

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