Abstract:
:Older women with type 2 diabetes mellitus (DM) have higher bone mineral density (BMD) but also have higher rates of fracture compared to those without DM. Limited evidence suggests that DM may also be associated with more rapid bone loss. To determine if bone loss rates differ by DM status in older women, we analyzed BMD data in the Study of Osteoporotic Fractures (SOF) between 1986 and 1998. SOF participants were women ≥65 years at baseline who were recruited from four regions in the U.S. DM was ascertained by self-report. BMD was measured with dual-energy x-ray absorptiometry (DXA) at baseline and at least one follow-up visit at the hip (N = 6624) and calcaneus (N = 6700) and, on a subset of women, at the spine (N = 396) and distal radius (N = 306). Annualized percent change in BMD was compared by DM status, using random effects models. Of 6,867 women with at least one follow-up DXA scan, 409 had DM at baseline. Mean age was 70.8 (SD 4.7) years. Baseline BMD was higher in women with DM at all measured sites. In models adjusted for age and clinic, women with prevalent DM lost bone more rapidly than those without DM at the femoral neck (-0.96 vs. -0.59%/year, p < 0.001), total hip (-0.98 vs. -0.70%/year, p < 0.001), calcaneus (-1.64 vs. -1.40%/year, p = 0.005), and spine (-0.33 vs. +0.33%/year, p = 0.033), but not at the distal radius (-0.97 vs. -0.90%/year, p = 0.91). These findings suggest that despite higher baseline BMD, older women with DM experience more rapid bone loss than those without DM at the hip, spine, and calcaneus, but not the radius. Higher rates of bone loss may partially explain higher fracture rates in older women with DM.
journal_name
Front Endocrinol (Lausanne)journal_title
Frontiers in endocrinologyauthors
Schwartz AV,Ewing SK,Porzig AM,McCulloch CE,Resnick HE,Hillier TA,Ensrud KE,Black DM,Nevitt MC,Cummings SR,Sellmeyer DEdoi
10.3389/fendo.2013.00062subject
Has Abstractpub_date
2013-05-30 00:00:00pages
62issn
1664-2392journal_volume
4pub_type
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