Prevalence of Vitamin D insufficiency and low bone mineral density in elderly Thai nursing home residents

BMC Geriatrics

Rajata Rajatanavin¹  Chutintorn Sriphrapradang¹  Ammarin Thakkinstian³  La-or Chailurkit²  Anuk Kruavit⁴ 

[1] Department of Medicine, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok 10400, Thailand;Division of Endocrinology and Metabolism, Department of Medicine, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, 270 Rama 6th Road, Bangkok 10400, Thailand;Research Center, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok 10400, Thailand;Medical Health Maintenance Organization, Eastern Health, Box Hill Hospital, Nelson Road, Box Hill, Melbourne, VIC 3128, Australia

关键词: Collagen type I trimeric cross-linked peptide;    Nursing homes;    Aged;    Bone density;    Osteoporosis;    Vitamin D;   

Others  :  858071
DOI  :  10.1186/1471-2318-12-49

 received in 2012-02-14, accepted in 2012-08-30,  发布年份 2012

【 摘 要 】

Background

Numerous emerging data from research on osteoporosis among Asians found differences from Caucasians. Therefore, the aim of this study was to determine the prevalence of vitamin D insufficiency and osteoporosis in elderly participants from two nursing homes in Thailand, a country located near the equator.

Methods

The subjects of this cross-sectional study comprised 93 elderly Thai women who were living in institutional long-term nursing homes for the aged. Demographic data, daily food and calcium intake, physical activity, and sunlight exposure were measured. Lumbar spine and femoral neck bone mineral density (BMD) and biochemical levels including serum 25 hydroxyvitamin D [25(OH)D] and bone turnover markers were assessed. Vitamin D insufficiency was defined as 25(OH)D level < 70 nmol/l.

Results

The mean age of subjects was 75.2 ± 6.0 (SD) years. Dietary calcium intake was low (322 ± 158 mg/day) The mean 25(OH)D level was 64.3 ± 14.9 nmol/L and the prevalence of vitamin D insufficiency was 38.7% (95% CI: 28.8%, 49.4%). There was no correlation between serum 25(OH)D concentrations and age (r = −.11, p = 0.3). The mean BMD of lumbar spine and femoral neck were 0.92 ± 0.19 and 0.65 ± 0.10 g/cm², respectively. Nearly a half of the subjects had osteopenia (44.1%, 95% CI: 33.8%, 54.8%) and osteoporosis (47.3%, 95% CI: 36.9%, 57.9%). Circulating C-terminal telopeptide of type I collagen (CTx) level correlated significantly with both lumbar spine (r = −0.26, p = 0.01) and femoral neck BMD (r = −0.25, p = 0.02).

Conclusions

More than one-third of Thai elderly women residing in nursing homes had vitamin D insufficiency. Almost all nursing home residents had osteoporosis and/or osteopenia.

【 授权许可】

   
2012 Kruavit et al.; licensee BioMed Central Ltd.

【 图 表 】

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