期刊
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
卷 24, 期 15, 页码 -出版社
MDPI
DOI: 10.3390/ijms241512425
关键词
animal model; depression; anxiety; absence epilepsy; antidepressant; L-methionine; brain monoamine; WAG; Rij rat
This study found that L-methionine can alleviate depression and anxiety symptoms comorbid with epilepsy and suppress epileptic seizures, in contrast to conventional antidepressant imipramine. This suggests that L-methionine could be a promising new antidepressant drug with anxiolytic properties for the treatment of depression comorbid with epilepsy.
Depression is a severe and widespread psychiatric disease that often accompanies epilepsy. Antidepressant treatment of depression comorbid with epilepsy is a major concern due to the risk of seizure aggravation. SAMe, a universal methyl donor for DNA methylation and the synthesis of brain monoamines, is known to have high antidepressant activity. This study aimed to find out whether L-methionine (L-MET), a precursor of SAMe, can have antidepressant and/or anxiolytic effects in the WAG/Rij rat model of depression comorbid with absence epilepsy. The results indicate that L-MET reduces the level of anxiety and depression in WAG/Rij rats and suppresses associated epileptic seizures, in contrast to conventional antidepressant imipramine, which aggravates absence seizures. The antidepressant effect of L-MET was comparable with that of the conventional antidepressants imipramine and fluoxetine. However, the antidepressant profile of L-MET was more similar to imipramine than to fluoxetine. Taken together, our findings suggest that L-MET could serve as a promising new antidepressant drug with anxiolytic properties for the treatment of depression comorbid with absence epilepsy. Increases in the level of monoamines and their metabolites-DA, DOPAC, HVA, NA, and MHPG-in several brain structures, is suggested to be a neurochemical mechanism of the beneficial phenotypic effect of L-MET.
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