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Year : 2014  |  Volume : 41  |  Issue : 1  |  Page : 37-43

Type 2 diabetes raises serum sclerostin levels and disturbs the relation between sclerostin and bone mineral density: a call for caution with antisclerostin therapy in osteoporosis

1 Department of Physical Medicine, Rheumatology, and Rehabilitation, Ain Shams University, Cairo, Egypt
2 Department of Geriatrics and Gerontology, Ain Shams University, Cairo, Egypt
3 Department of Clinical Pathology, Ain Shams University, Cairo, Egypt

Correspondence Address:
Dina S Al-Zifzaf
Department of Physical Medicine, Rheumatology, and Rehabilitation, Faculty of medicine, Ain Shams University, Cairo, Postal code: 11566
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/1110-161X.128136

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Background Sclerostin is an osteocyte-secreted protein that negatively regulates osteoblasts. Wnt signaling may be crucial in the pathogenesis of impaired bone quality in type 2 diabetes mellitus (T2DM). The possibility that currently studied antisclerostin bone-forming agents could be useful to T2DM patients with osteoporosis needs further investigations. Aim The aim of this study was to investigate the relationship between serum sclerostin and bone mineral density in T2DM patients, in comparison with nondiabetic individuals. Patients and Methods This study was conducted on 21 T2DM patients and 22 nondiabetic individuals. All participants were 60 years or older. They underwent history taking, clinical examination, routine lab investigations, and glycated hemoglobin assessment. Serum sclerostin was measured by ELISA. Bone mineral density (BMD) was measured at the left femoral neck and lumbar spine. Results Serum sclerostin level was significantly higher in T2DM patients compared with nondiabetic individuals. Male participants showed significantly higher sclerostin levels among the nondiabetic individuals, whereas this difference was not significant among T2DM patients. The Bone mineral density (BMD) and t-values of T2DM patients and the nondiabetic group were not significantly different. We found a significant positive correlation between sclerostin level and lumbar spine BMD among nondiabetic individuals, whereas among T2DM patients, this correlation was not significant. Sclerostin levels did not show a significant difference between diabetic osteoporotic and diabetic nonosteoporotic patients. Conclusion Patients with T2DM have raised sclerostin levels that, unlike those in nondiabetic individuals, are not correlated with BMD. This pathological condition that is specific to diabetes necessitates further study, careful assessment of the role of antisclerostin therapy, and probable dose adjustment for osteoporosis in T2DM patients.

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