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Longitudinal Evaluation of Mouse Hind Limb Bone Loss After Spinal Cord Injury using Novel, in vivo, Methodology
Published on: December 7, 2011
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Multimodal MRI reveals hypothalamic structural-functional alterations associated with bone mineral density loss in
Xiyong Dai1,2, Zhijie Gao1,2, Lei Gao3
1The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China.
Brain Imaging and Behavior
|February 11, 2026
Summary
Central nervous system dysregulation, particularly in the hypothalamus, is linked to osteoporosis. This study found structural and functional brain changes in postmenopausal women with bone density loss.
Area of Science:
- Neuroscience
- Endocrinology
- Radiology
Background:
- Central nervous system (CNS) dysregulation is increasingly implicated in osteoporosis pathogenesis.
- The hypothalamus, a key homeostatic regulator, has an under-explored role in human bone health.
- Understanding hypothalamic involvement is crucial for novel therapeutic targets in osteoporosis.
Purpose of the Study:
- To investigate structural and functional alterations in hypothalamic subregions associated with bone mineral density (BMD) loss in postmenopausal women.
- To explore the relationship between hypothalamic neuroimaging markers and osteoporosis using multimodal MRI.
- To identify potential neuroimaging biomarkers for fracture risk stratification.
Main Methods:
- Fifty-four postmenopausal women (osteoporosis, osteopenia, controls) underwent 3T MRI.
- Deep learning-based segmentation identified hypothalamic subregions.
- Seed-based functional connectivity and white matter shape analyses were performed, correlated with BMD.
Main Results:
- Region-specific hypothalamic volume changes were observed (e.g., decreased right anterior inferior hypothalamus in osteoporosis).
- Enhanced functional connectivity was found between the left anterior inferior hypothalamus and the left superior lateral occipital cortex/precuneus.
- A positive correlation between right anterior superior hypothalamus volume and BMD was noted in the osteopenia group.
Conclusions:
- Preliminary in vivo evidence suggests multimodal hypothalamic alterations in postmenopausal osteoporosis.
- Structural and functional hypothalamic changes, including connectivity with visual-attentional networks, may be associated with BMD loss.
- The right anterior inferior hypothalamus volume shows potential as a neuroimaging biomarker for osteoporosis assessment.
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