Determination of serum 25-hydroxyvitamin D(3) levels in early postmenopausal Iranian women: relationship with bone mineral density.
Serum levels of 25-hydroxyvitamin D(3) (25-OHD(3)) and bone mineral density (BMD) were determined in 73 selected, early postmenopausal women referred to the Bone Densitometry Center, Loghman-Hakim Hospital, Tehran, Iran. The relationship between them was also assessed. 25-OHD(3) levels were measured using high-performance liquid chromatography. BMD was measured with dual-energy X-ray absorptiometry of the lumbar spine and proximal femur regions. 25-OHD(3) levels ranged from 3.8 to 64.0 ng/mL (mean +/- SD: 17.1 +/- 11.3). Twenty-six subjects (36%) were vitamin D-deficient (<12 ng/mL). In the lumbar spine (L2-4) BMD measurements, 28 subjects (38%) were normal (T score > -1), 26 (36%) were osteopenic (T < or = -1 to >-2.5), and 19 (26%) were osteoporotic (T < -2.5). In the hip (total) BMD measurements, 41 subjects (56.1%) were normal, 31 (42.5%) were osteopenic, and 1 (1.4%) was osteoporotic. There was a significant correlation between spine BMD (Z score) and 25-OHD(3) (r = 0.23, p < 0.05), but the correlation was not significant for hip BMD. It was concluded that vitamin D deficiency was evident in early postmenopausal Iranian women, and serum 25-OHD(3) was weakly correlated with spine BMD, which may have physiological significance.
Rassouli
A
A
Department of Pharmacology, Iran University of Medical Sciences, Tehran, Iran.
Milanian
I
I
Moslemi-Zadeh
M
M
D015519:Bone Density; D002112:Calcifediol / Q000097:blood*; D005260:Female; D006621:Hip Joint / Q000473:pathology; D006801:Humans; D007492:Iran; D008159:Lumbar Vertebrae / Q000473:pathology; D008875:Middle Aged; D010024:Osteoporosis / Q000097:blood / Q000473:pathology; D017698:Postmenopause / Q000378:metabolism*
D002112:Calcifediol