Chronic Ethanol Consumption and Thiamine Deficiency Modulate β-Amyloid Peptide Level and Oxidative Stress in the Brain
| Autor: | Cui-Yi Liang, Kun Hu, Fang-Li Hou, Feng-Lin Song, Yongqing Gao, Yu-Shi Gong, Juan Guo |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Male
0301 basic medicine medicine.medical_specialty Liquid diet medicine.disease_cause Nitric oxide Superoxide dismutase Mice 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Internal medicine mental disorders medicine Animals Thiamine chemistry.chemical_classification Amyloid beta-Peptides Ethanol biology Glutathione peroxidase Brain Thiamine Deficiency General Medicine Malondialdehyde Mice Inbred C57BL Nitric oxide synthase Oxidative Stress 030104 developmental biology Endocrinology chemistry Biochemistry biology.protein 030217 neurology & neurosurgery Oxidative stress |
| Zdroj: | Alcohol and Alcoholism. |
| ISSN: | 1464-3502 0735-0414 |
| DOI: | 10.1093/alcalc/agw095 |
| Popis: | Aims The effects of chronic ethanol (EtOH) consumption, associated or not with thiamine deficiency (TD), on β-amyloid peptide (Aβ) level and oxidative stress in the brain were studied in male C57BL/6 mice. Methods Mice were prepared by feeding with an EtOH liquid diet, thiamine-depleted liquid diet and a thiamine-depleted EtOH liquid diet for 7 weeks. Biochemical parameters were measured by corresponding commercial kits. Results EtOH consumption or TD induced a significant decrease in the thiamine level, but induced increased in the β-amyloid peptide 1–42 and β-amyloid peptide 1–40 (Aβ1–40) levels. EtOH consumption led to a significant increase in the malondialdehyde (MDA) and nitric oxide (NO) levels, total nitric oxide synthase (NOS) activities and inducible nitric oxide synthase (iNOS) activities, but a significant decrease in superoxide dismutase (SOD) and glutathione peroxidase activities. TD significantly elevated the MDA content and total NOS and iNOS activities but lowered SOD activity. Aβ1–40 overproduction, the change in the NO level, and SOD activity in the brain induced by chronic EtOH treatment associated with TD were greater than that induced by EtOH or TD alone. Conclusion Findings from this report suggested that chronic EtOH consumption could induce TD, excess Aβ production and oxidative damage, and the association with TD should have more severe effects on the brain. Short summary Chronic EtOH consumption or thiamine deficiency (TD) treatment could reduce the thiamine level, induce β-amyloid peptide (Aβ) overproduction and oxidative stress in the brain. When associated with TD, EtOH consumption caused Aβ overproduction and oxidative damage more serious. |
| Databáze: | OpenAIRE |
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