Abstract：
BACKGROUND:Whether or not mild hyperhomocysteinemia and low serum levels of folates or vitamin B12 are risk factors for osteoporosis in the elderly is controversial. AIMS AND METHODS:To investigate whether or not plasma levels of total homocysteine (tHcy) and serum levels of folates and vitamin B12 are associated with bone mineral density (BMD), we carried out a cross-sectional study on 446 post-menopausal women (mean age: 65.1+/-9.4 years), consecutively seen at the Siena Unit (Tuscany region, Central Italy) for BMD evaluation over a two-year period. BMD of the total femur, femoral neck and lumbar spine was detected by dual-energy X-ray absorptiometry. RESULTS:The age-adjusted geometric mean of plasma tHcy levels (micromol/L) was 9.96+/-1.29 in women with normal BMD, 11.06+/-1.32 in those with osteopenia and 11.88+/-1.35 in those with osteoporosis (p<0.0001). On multiple linear regression analysis, adjusting for age, body mass index, folates, vitamin B12, creatinine clearance, smoking habit and alcohol intake, tHcy was negatively related to BMD of the total femur [beta estimate for log-homocysteine: -0.050 (95% CI: -0.100 to -0.001, p=0.048; R(2)=0.02)], but not of femoral neck or lumbar spine. There was no significant association between BMD and serum levels of folates and vitamin B12. CONCLUSIONS:tHcy is negatively associated with BMD of the total femur. The contribution of tHcy to explain the variance of BMD is small (2% of the total variance) but clinically relevant, considering the high prevalence of osteoporosis among post-menopausal women and the possibility to lower tHcy by vitamin supplementation.
journal_name
Eur J Intern Medjournal_title
European journal of internal medicineauthors
Bucciarelli P,Martini G,Martinelli I,Ceccarelli E,Gennari L,Bader R,Valenti R,Franci B,Nuti R,Mannucci PMdoi
10.1016/j.ejim.2010.03.017subject
Has Abstractpub_date
2010-08-01 00:00:00pages
301-5issue
4eissn
0953-6205issn
1879-0828pii
S0953-6205(10)00060-9journal_volume
21pub_type
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