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Diabetes Metab Res Rev. 2004 May-Jun;20(3):196-204.

Skeletal involvement in patients with diabetes mellitus.

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  • 1Department of Internal Medicine, Casa Sollievo della Sofferenza IRCCS, San Giovanni Rotondo (FG), Italy.

Abstract

Studies on skeletal involvement in patients with diabetes mellitus have generated conflicting results, largely because of the pathogenetic complexity of the condition. Several mechanisms may contribute to skeletal damage, including the increased urinary excretion coupled with the lower intestinal absorption of calcium, the inappropriate homeostatic response in terms of parathyroid hormone secretion, and also the complex alteration of vitamin D regulation. Decreased or increased insulin and IGF-1 concentrations and the effects of the accumulation of glycation endproducts on the bone tissue could also play a role. A possible genetic predisposition is also currently under investigation. Finally, the role of fat tissue in type 1 and type 2 diabetes and that of diabetic complications also deserve note. As far as bone mass is concerned, in adult patients with type 1 diabetes a moderately reduced bone mineral density has been shown in both axial and appendicular skeleton. On the contrary, patients with type 2 diabetes seem to have higher bone mineral density in respect to healthy control subjects, especially when overweight women are considered. No clear relationship between bone mass measurements and biochemical parameters of mineral metabolism has been shown in the different types of diabetes. Cohort studies recently carried out on large samples indicate that diabetic patients (with both type 1 and type 2 disease) have a higher risk for fracture, in particular for hip fracture, the most dangerous osteoporotic complication. This seems to be dependent both on qualitative and quantitative alterations of the bone, as well as on extra-skeletal factors due to the neuropathic and microangiopathic complications of the disease.

Copyright 2004 John Wiley & Sons, Ltd.

PMID:
15133750
[PubMed - indexed for MEDLINE]
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