Related Experiment Videos
Bone turnover markers and bone density across the menopausal transition
P R Ebeling1, L M Atley, J R Guthrie
1Bone and Mineral Service, University of Melbourne, Royal Melbourne Hospital, Victoria, Australia. p.ebeling@medicine.unimelb.edu.au
The Journal of Clinical Endocrinology and Metabolism
|September 1, 1996
Summary
Perimenopause is linked to increased bone resorption and declining bone mineral density (BMD). Factors beyond estrogen loss may drive postmenopausal osteoporosis, highlighting the need for further research into bone health during menopause.
Area of Science:
- Endocrinology
- Bone Biology
- Reproductive Health
Background:
- Menopause significantly impacts bone health, leading to decreased bone mineral density (BMD).
- Understanding bone turnover markers and hormonal changes during menopausal transition is crucial for osteoporosis prevention.
- Estrogen deficiency is a primary driver of postmenopausal bone loss, but other factors may also contribute.
Purpose of the Study:
- To investigate bone mineral density (BMD) and bone turnover markers across menopausal stages.
- To assess the relationship between hormonal changes (gonadotrophins, estradiol, inhibin) and bone metabolism.
- To identify predictors of BMD in women aged 45-57.
Main Methods:
- Population-based cohort study of 281 women aged 45-57.
- Measurement of lumbar spine and femoral neck bone mineral density (BMD).
- Assessed urine resorption markers, serum formation markers, and hormone concentrations (gonadotrophin, estradiol, inhibin).
Main Results:
- Postmenopausal women had lower BMD than premenopausal women, except for those on hormone replacement therapy (HRT).
- Perimenopausal women showed increased bone resorption markers and gonadotrophin levels but no change in estradiol or bone formation markers.
- Bone turnover markers correlated positively with follicle-stimulating hormone (FSH) levels; age, urine N-telopeptide, bone alkaline phosphatase, and FSH were key BMD predictors.
Conclusions:
- Perimenopause is characterized by elevated bone resorption and declining BMD.
- Factors beyond estrogen deficiency likely contribute to postmenopausal osteoporosis pathogenesis.
- HRT use in postmenopausal women was associated with lower bone resorption markers.