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Gold Nanoparticle Synthesis
Published on: July 10, 2021
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Size dependent effects of Gold Nanoparticles in ISO-induced Hyperthyroid Rats
Jingwen Zhang1, Yanbo Xue1, Yajuan Ni2
1Department of Cardiovascular Medicine, First Affiliated Hospital of Xi'an Jiaotong University, Shaanxi Key Laboratory of Molecular Cardiology, Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi, China.
Scientific Reports
|July 21, 2018
Summary
Gold nanoparticles (Au-NPs) show size-dependent effects on heart disease. Smaller Au-NPs offer cardiac protection in hyperthyroid rats, while larger ones induce pathological changes in healthy hearts.
Area of Science:
- Biomedical Engineering
- Nanomedicine
- Cardiovascular Research
Background:
- Hyperthyroid heart disease (HHD) poses significant cardiovascular risks.
- Gold nanoparticles (Au-NPs) are being explored for therapeutic applications.
- Understanding nanoparticle behavior in disease models is crucial for clinical translation.
Purpose of the Study:
- To investigate the size-dependent effects of gold nanoparticles (Au-NPs) on isoproterenol-induced hyperthyroid heart disease (HHD) in rats.
- To evaluate the cardiac safety and biodistribution of different sized Au-NPs.
- To elucidate the underlying cellular mechanisms of Au-NP interactions in cardiac tissue.
Main Methods:
- Intravenous administration of 5, 40, and 100 nm Au-NPs to HHD rats and control groups.
- Assessment of cardiac function using serum cardiac marker enzymes and ICP-MS for Au-NP accumulation.
- Histological analysis, TUNEL staining, transmission electron microscopy, and western blotting on H9C2 cells.
Main Results:
- A size-dependent effect of Au-NPs on cardiac tissue was observed.
- 5 nm Au-NPs exhibited a protective effect in HHD rats with minimal cardiac accumulation.
- Au-NPs induced pathological alterations in control groups but protected HHD groups from fibrosis and apoptosis, modulating autophagy pathways.
Conclusions:
- Gold nanoparticles demonstrate size-specific therapeutic potential in hyperthyroid heart disease models.
- The findings suggest Au-NPs could be a novel therapeutic strategy for HHD, warranting further investigation.
- This study provides critical in vivo and in vitro data for the clinical consideration of Au-NPs in heart disease treatment.
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