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| Content Provider | Springer Nature Link |
|---|---|
| Author | Ou, Xiao Ming Johnson, Chandra Lu, Deyin Johnson, Shakevia Paul, Ian A. Austin, Mark C. Iyo, Abiye H. Miguel Hidalgo, Jose Javier Luo, Jia Bell, Richard L. Grunewald, Matthew Wang, Junming Sittman, Donald B. |
| Copyright Year | 2010 |
| Abstract | Brain cell loss has been reported in subjects with alcoholism. However, the molecular mechanisms are unclear. Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and monoamine oxidase B (MAO B) reportedly play a role in cellular dysfunction with regards to ethanol exposure. We have recently reported that GAPDH protein expression was increased in the brains of rats fed with ethanol. Furthermore, GAPDH interacts with the transcriptional activator, transforming growth factor-beta-inducible early gene 2 (TIEG2), to augment TIEG2-mediated MAO B activation, resulting in neuronal cell damage due to ethanol exposure. The current study investigates whether the TIEG2–MAO B cascade is also active in the brains of rats fed with ethanol. Ten ethanol-preferring rats were fed with a liquid diet containing ethanol, with increasing amounts of ethanol up to a final concentration of 6.4% representing a final diet containing 36% of calories for 28 days. Ten control rats were fed the liquid diet without ethanol. The expression of TIEG2 protein, MAO B mRNA levels, MAO B catalytic activity, and the levels of anti-apoptotic protein Bcl 2 and apoptotic protein caspase 3 were determined in the prefrontal cortex of the rats. Ethanol significantly increased protein levels of TIEG2, active caspase 3, MAO B mRNA and enzyme activity, but significantly decreased Bcl 2 protein expression compared to control rats. In summary, ethanol increases the TIEG2–MAO B brain cell death cascade in rat brains, suggesting that the TIEG2–MAO B pathway is a novel pathway for brain cell damage resulting from ethanol exposure, and may contribute to chronic alcohol-induced brain damage. |
| Starting Page | 511 |
| Ending Page | 518 |
| Page Count | 8 |
| File Format | |
| ISSN | 10298428 |
| Journal | Neurotoxicity Research |
| Volume Number | 19 |
| Issue Number | 4 |
| e-ISSN | 14763524 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2010-03-05 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Alcoholism Ethanol-preferring rats Transforming growth factor-beta-inducible early gene 2 Monoamine oxidase B Apoptosis Bcl 2 Active caspase 3 Cell death pathway Neurosciences Pharmacology/Toxicology Neurobiology Cell Biology Neurochemistry Neurology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Neuroscience Toxicology |
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