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Updated: Jun 4, 2026
Exploring the Two Herb Combination Strategy to Treat Injured PC12 Cells
Published on: November 18, 2022
[Primary investigation of methamphetamine-induced toxicity in PC12 cells]
Li-zeng Li1, Hui-jun Wang, Jiang-wei Lan
1Department of Forensic Medicine, Southern Medical Univesity, Guangzhou 510515, China. lilizeng520@sina.com
Objective:
To investigate the mechanism of methamphetamine (METH)-induced toxicity in PC12 cells.
Methods:
PC12 cells were treated with METH for 24 h at the doses of 0, 0.5, 1.0, 1.5, 2.0, or 2.5 mmol/L. The morphological changes of the cells were observed under inverted microscope after the treatment. MTT assay and flow cytometry were used to assess the cell viability and apoptotic rates, respectively, and the level of nitric oxide (NO) was measured by enzyme reduction method.
Results:
The PC12 cells exposed to METH were morphologically featured by cell shrinkage, dendrite disruption and disappearance of cell reticular formation. METH exposure caused a dose-dependent reduction in the cell viability (P<0.01), resulting in also increased cell apoptotic rate and significant elevation of NO in the cell culture supernatant (P<0.05).
Conclusion:
METH exposure induces cytotoxicity and injury of differentiated PC12 cells, leading to decreased cell viability and increased cell apoptosis and NO level. Cell apoptosis and excessive NO production are involved in METH-induced cytotoxicity.
Insights
Methamphetamine (METH) causes PC12 cell damage, reducing viability and increasing apoptosis and nitric oxide (NO) levels. These findings highlight METH
Area of Science:
- Neuroscience
- Toxicology
- Cell Biology
Context:
- Methamphetamine (METH) is a potent neurotoxin.
- Understanding METH's cellular mechanisms is crucial for neuroprotection strategies.
- PC12 cells are a widely used model for neuronal function and toxicity studies.
Purpose:
- To elucidate the mechanism of METH-induced toxicity in differentiated PC12 cells.
- To quantify the impact of METH on cell viability, apoptosis, and nitric oxide (NO) production.
Summary:
- PC12 cells treated with METH exhibited morphological changes including cell shrinkage and dendrite disruption.
- METH exposure resulted in a dose-dependent decrease in cell viability and a significant increase in apoptotic rates.
- Elevated levels of nitric oxide (NO) were observed in the cell culture supernatant following METH treatment.
Impact:
- METH-induced cytotoxicity in PC12 cells involves decreased cell viability and increased apoptosis.
- Excessive nitric oxide (NO) production is implicated as a key mediator in METH-induced cellular injury.
- This study provides insights into the cellular pathways affected by METH, informing potential therapeutic interventions.
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