P2-73 Evaluation of bone fragility of Japanese women according to the range of age: correlation with menopausal reference, bone related indicators and biomarkers

IntroductionTo clarify characteristics of bone fragility in middle-aged Japanese women, we have examined the correlation between bone quality by novel ultrasonic bone densitometry system and several biochemical markers of bone turnover.MethodsSubjects are 121 female applied for this study voluntarily. We evaluated which factors are related with bone quality, bone mineral density or bone elastic modulus as fragile risk in healthy Japanese population. We have measured bone metabolism markers (tartrate-resistant acid phosphatase (TRACP)-5b, bone-specific alkaline phosphatase). For the assessment of examined factors, we have divided the subjects into three subgroups according to the age (Group A: 60) and investigated the correlation of above-mentioned bone fragile index, biomarkers, and the menopausal reference (pre-menopause, peri-menopause, post-menopause).Results90 were included in Group A, 21 in Group B and 10 in Group C. Regarding the menopause status, approximately 90% of subjects in Group A had a menstruation regularly, 25% of subjects in Group B had a irregular menstruation and 60% showed the post-menopause. The bone mineral density and bone elastic modulus showed significantly lower in Group C than in Group A or B. The bone-specific alkaline phosphatase and TRACP-5b were significantly higher in Group B and C than in Group A (p