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. 2020 Feb;21(1):88-97.
doi: 10.1111/pedi.12930. Epub 2019 Oct 27.

Bone Health Index and bone turnover in pediatric patients with type 1 diabetes mellitus and poor metabolic control

Olga Slavcheva-Prodanova  1 , Maia Konstantinova  1 , Adelina Tsakova  2 , Radka Savova  1 , Margarita Archinkova  1
Affiliations

Bone Health Index and bone turnover in pediatric patients with type 1 diabetes mellitus and poor metabolic control

Olga Slavcheva-Prodanova et al. Pediatr Diabetes. 2020 Feb.

Abstract

Background: There is a need for a non-invasive, affordable, and reliable method for bone health screening in pediatric patients at risk.

Objective: To assess Bone Health Index (BHI) in pediatric patients with type 1 diabetes (T1D) and its relation to bone metabolism, age at onset, duration, control, and insulin dose.

Subjects and methods: Left-hand radiographs were obtained from 65 patients with T1D, mean age 11.23 ± 3.89 years, mean disease duration 5.23 ± 3.76 years and mean glycosylated hemoglobin (HbA1c)-83 mmol/mol (9.7%). Blood and 24 hours urine samples were collected for bone and mineral metabolism assessment. BoneXpert was used to determine BHI, Bone Health Index standard deviation score (BHI SDS), and bone age.

Results: Mean BHI SDS was -1.15 ± 1.19 (n = 54). In 20.37% (n = 11) BHI SDS was < -2SD with mean value -2.82 ± 0. 69, P < .001. These patients had lower levels of beta cross laps (0.77 ± 0.33 ng/mL vs 1.17 ± 0.47 ng/mL), osteocalcin (47.20 ± 14.07 ng/mL vs 75.91 ± 32.08 ng/mL), serum magnesium (0.79 ± 0.05 mmol/L vs 0.83 ± 0.06 mmol/L) and phosphorus (1.48 ± 0.29 mmol/L vs 1.71 ± 0.28 mmol/L) but higher ionized calcium (1.29 ± 0.04 mmol/L vs 1.26 ± 0.05 mmol/L), P < .05, compared to patients with BHI SDS in the normal range. We found a positive correlation between BHI SDS and age at manifestation (r = 0.307, P = 0.024) and a negative one with disease duration (r = -0.284, P = .038). No correlations were found with HbA1c, insulin dose, height, weight, BMI.

Conclusions: To the best of our knowledge, this is the first study to assess bone health in pediatric patients with T1D using BHI. We found significantly decreased cortical bone density and bone turnover in 20.37%. Earlier age at onset and diabetes duration may have a negative impact on cortical bone density in patients with poor control. Longitudinal studies are needed to follow changes or to assess future interventions.

Keywords: bone health index; bone turnover; diabetes type 1; pediatrics.

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References

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