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Alleviating anastrozole induced bone toxicity by selenium nanoparticles in SD rats
Kiritkumar K Vekariya1, Jasmine Kaur, Kulbhushan Tikoo
1Laboratory of Chromatin Biology, Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S.A.S. Nagar, Punjab-160062, India.
Toxicology and Applied Pharmacology
|February 19, 2013
Summary
Selenium nanoparticles mitigate bone toxicity from anastrozole, a breast cancer drug. This combination therapy protects bone density and prevents fractures, offering a safer treatment option.
Area of Science:
- Oncology
- Nanotechnology
- Bone Biology
Background:
- Aromatase inhibitors like anastrozole are crucial for breast cancer treatment.
- Chronic anastrozole use leads to significant side effects, including osteoporosis and bone fractures.
- There is a need for strategies to mitigate the skeletal toxicity of aromatase inhibitors.
Purpose of the Study:
- To investigate the potential of selenium nanoparticles (SeNPs) to reduce anastrozole-induced bone toxicity.
- To evaluate the protective effects of SeNPs on bone health in preclinical models.
Main Methods:
- In vitro studies using human osteoblast (HOS) cells treated with anastrozole and SeNPs.
- In vivo studies using female Sprague-Dawley (SD) rats and ovariectomized rat models.
- Assessment of cell viability, bone mineral density, bone resorption markers, and histopathological analysis of bone tissue.
Main Results:
- SeNPs significantly reduced anastrozole-induced cell death in HOS cells.
- SeNPs prevented bone density loss and reduced bone resorption markers in SD rats treated with anastrozole.
- Histological analysis revealed bone restorative effects, including ossification and mineralization, in SeNP-treated groups.
- SeNPs demonstrated a protective effect against osteoporosis in an ovariectomized rat model.
Conclusions:
- Selenium nanoparticles can effectively mitigate the bone toxicity associated with anastrozole treatment.
- Conjugate administration of SeNPs with anastrozole offers a promising strategy for preserving bone health in breast cancer patients.
- SeNPs show potential for preventing and treating bone loss due to estrogen deficiency.
