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[Copper nanoparticles as modulators of apoptosis and structural changes in some organs]
Morfologiia (Saint Petersburg, Russia)
|March 6, 2014
Summary
Repeated copper nanoparticle (CNP) injections caused tissue-specific structural changes and toxicity in rat organs. Caspase 3 expression can serve as a safety indicator for CNP administration.
Area of Science:
- Nanotoxicology
- Cellular Biology
- Histopathology
Context:
- Copper nanoparticles (CNP) are increasingly used in biomedical applications.
- Understanding their in vivo effects is crucial for safety assessments.
- Previous studies have not fully elucidated the long-term organ-specific toxicity of CNP.
Purpose:
- To investigate the effects of repeated intramuscular copper nanoparticle (CNP) injections on rat organs.
- To evaluate CNP distribution, tissue-specific structural changes, and cellular toxicity.
- To determine the utility of cell apoptosis markers in assessing CNP safety.
Summary:
- Male Wistar rats received weekly intramuscular CNP injections (103 nm diameter) for 12 weeks.
- Histological, immunohistochemical, and morphometric analyses revealed CNP distribution and organ-specific structural alterations.
- Toxicity was observed in microgliocytes (2 mg/kg), liver, and kidneys (6 mg/kg), with higher doses inducing dystrophy and necrosis.
Impact:
- Demonstrates CNP-induced toxicity in liver, spleen, kidneys, and brain.
- Highlights the dose-dependent nature of CNP toxicity.
- Proposes caspase 3 expression as a reliable biomarker for evaluating CNP injection safety.
