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Evaluation of Bcl-2 Family Gene Expression in Hippocampus of 3, 4-methylenedioxymethamphetamine Treated Rats
Sara Soleimani Asl1, Mohammad Hassan Farhadi, Kazem Moosavizadeh
11. Department of Anatomical Sciences, Hamadan University of Medical Sciences, Hamadan, Iran.
Objective:
3,4-methylenedioxymethamphetamine (MDMA) is an illicit, recreational drug that causes cellular death and neurotoxicity. This study evaluates the effects of different doses of MDMA on the expression of apoptosis-related proteins and genes in the hippocampus of adult rats.
Materials And Methods:
In this expremental study,a total of 20 male Sprague Dawley rats (200-250 g ) were treated with MDMA (0, 5, 10, 20 mg/kg i.p. twice daily) for 7 days. Seven days after the last administration of MDMA, the rats were killed. Bax and Bcl-2 genes in addition to protein expressions were detected by western blot and reverse transcriptionpolymerase chain reaction (RT-PCR).Results were analyzed using one-way ANOVA and p≤0.05 was considered statistically significant.
Results:
Our results showed that MDMA caused dose dependent up-regulation of Bax and down-regulation of Bcl-2 in the hippocampus. There was a significant alteration in bcl-2 and bax genes density.
Conclusion:
Changes in apoptosis-related proteins and respective genes relating to Bax and Bcl-2 might be involved in the molecular mechanism of MDMA-induced apoptosis.
Insights
3,4-methylenedioxymethamphetamine (MDMA) alters apoptosis by changing Bax and Bcl-2 gene and protein expression in rat hippocampus. This neurotoxic effect is dose-dependent, highlighting MDMA
Area of Science:
- Neuroscience
- Molecular Biology
- Toxicology
Background:
- 3,4-methylenedioxymethamphetamine (MDMA) is a recreational drug known to induce neurotoxicity.
- Cellular death, or apoptosis, is a critical process implicated in neurodegenerative conditions.
Purpose of the Study:
- To investigate the impact of varying MDMA doses on apoptosis-related protein and gene expression.
- Specifically examining the hippocampus, a brain region crucial for memory and cognition.
Main Methods:
- Adult male Sprague Dawley rats were administered MDMA (0, 5, 10, 20 mg/kg) twice daily for seven days.
- Western blot and RT-PCR were employed to quantify Bax and Bcl-2 gene and protein levels.
- Statistical significance was determined using one-way ANOVA (p≤0.05).
Main Results:
- MDMA treatment resulted in a dose-dependent increase in Bax expression.
- Conversely, MDMA led to a dose-dependent decrease in Bcl-2 expression.
- Significant alterations in the density of bcl-2 and bax genes were observed.
Conclusions:
- The study suggests that MDMA-induced apoptosis in the hippocampus involves molecular mechanisms related to Bax and Bcl-2.
- These findings contribute to understanding the neurotoxic potential of MDMA.
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