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Type 2 Diabetes Mellitus is Associated with Better Bone Microarchitecture But Lower Bone Material Strength and Poorer Physical Function in Elderly Women - a Population-Based Study.
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- Nilsson, Anna G, 1968 (författare)
- Gothenburg University,Göteborgs universitet,Centre for Bone and Arthritis Research,Institutionen för medicin, avdelningen för invärtesmedicin och klinisk nutrition,Institute of Medicine, Department of Internal Medicine and Clinical Nutrition
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- Sundh, Daniel, 1985 (författare)
- Gothenburg University,Göteborgs universitet,Centre for Bone and Arthritis Research,Institutionen för medicin, avdelningen för invärtesmedicin och klinisk nutrition,Institute of Medicine, Department of Internal Medicine and Clinical Nutrition
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- Johansson, Lisa (författare)
- Gothenburg University,Göteborgs universitet,Centre for Bone and Arthritis Research,Institutionen för medicin, avdelningen för invärtesmedicin och klinisk nutrition,Institute of Medicine, Department of Internal Medicine and Clinical Nutrition
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- 2017-01-18
- 2017
- Engelska.
- Ingår i: Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research. - : Wiley. - 1523-4681. ; 32:5
- Tidskriftsartikel (refereegranskat)
Abstract
Ämnesord
Stäng
- Type 2 diabetes mellitus (T2DM) is associated with an increased risk of fractures according to several studies. The underlying mechanisms remain unclear, although small case-control studies indicate poor quality of the cortical bone. We have studied a population-based sample of women aged 75-80 in Gothenburg, randomly invited from the population registry. Areal bone mineral density (aBMD) was measured by dual energy x-ray absorptiometry (Hologic Discovery A), bone microarchitecture by high-resolution peripheral quantitative computed tomography (HR-pQCT; ExtremeCT from Scanco Medical AG), and reference point indentation was performed with Osteoprobe (Active Life Scientific). Women with T2DM (n=99) had higher aBMD compared to controls (n=954). Ultradistal tibial and radial trabecular bone volume fraction (+11% and +15%, respectively), distal cortical volumetric BMD (+1.6% and +1.7%), cortical area (+11.5% and +9.3%), and failure load (+7.7% and +12.9%) were higher in diabetics than in controls. Cortical porosity was lower (mean±SD: 1.5±1.1 vs 2.0±1.7%, p=0.001) in T2DM in the distal radius but not in the ultradistal radius or the tibia. Adjustment for covariates (age, body mass index, glucocorticoid treatment, smoking, physical activity, calcium intake, bone-active drugs) eliminated the differences in aBMD but not in HR-pQCT bone variables. However, bone material strength index (BMSi) by reference point indentation was lower in T2DM (74.6±7.6 vs 78.2±7.5, p<0.01), also after adjustment, and women with T2DM performed clearly worse in measures of physical function (one leg standing: -26%, 30s chair-stand test: -7%, timed up and go: +12%, walking speed: +8%; p<0.05-0.001) compared to controls. In conclusion, we observed a more favorable bone microarchitecture but no difference in adjusted aBMD in elderly women with T2DM in the population compared to non-diabetics. Reduced BMSi and impaired physical function may explain the increased fracture risk in T2DM. This article is protected by copyright. All rights reserved.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Endokrinologi och diabetes (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Endocrinology and Diabetes (hsv//eng)
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