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Estrogen-Like Effect of Bazi Bushen Capsule in Ovariectomized Rats
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LIGHT/TNFSF14 regulates estrogen deficiency-induced bone loss
Giacomina Brunetti1, Giuseppina Storlino2, Angela Oranger2
1Department of Basic and Medical Sciences, Neurosciences and Sense Organs, Section of Human Anatomy and Histology, University of Bari, Bari, Italy.
The Journal of Pathology
|January 29, 2020
Summary
Ovariectomy causes bone loss by increasing the T-cell cytokine LIGHT, which affects bone cell activity. Blocking LIGHT may treat postmenopausal osteoporosis by preventing bone loss.
Area of Science:
- Immunology
- Bone Biology
- Endocrinology
Background:
- Ovariectomy-induced bone loss involves complex cellular and molecular mechanisms.
- The precise role of immune cells and cytokines in this process remains incompletely understood.
Purpose of the Study:
- To investigate the role of the T-cell co-stimulatory cytokine LIGHT in ovariectomy-induced bone loss.
- To explore LIGHT as a potential therapeutic target for postmenopausal osteoporosis.
Main Methods:
- Utilized LIGHT-deficient (Tnfsf14-/-) and lymphocyte-deficient (Rag-/-Tnfsf14-/-) mouse models.
- Assessed bone mass and analyzed cytokine expression (TNF, OPG, RANKL) following ovariectomy.
- Measured LIGHT levels in circulating immune cells of postmenopausal osteoporosis patients.
Main Results:
- Ovariectomy increased LIGHT levels, stimulating both osteoblastogenesis and osteoclastogenesis.
- LIGHT-deficient mice were protected from ovariectomy-induced bone loss.
- Postmenopausal osteoporosis patients showed elevated LIGHT in T cells and monocytes.
Conclusions:
- LIGHT is a key mediator of bone loss following ovariectomy.
- Targeting LIGHT may offer a novel therapeutic strategy for postmenopausal osteoporosis.
Keywords:
LIGHT/TNFSF14RANKL/OPGTNFbone lossimmune cellsosteoblastsosteoclastsosteoimmunologyovariectomypostmenopausal osteoporosisMore Related Videos
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