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- W4328103738 abstract "Depression is reportedly associated with alterations in kynurenine pathway metabolites (kynurenines). Several kynurenines are involved in glutamate signaling, and some have potentially neurotoxic effects while others are considered neuroprotective. The pathway is upregulated under inflammatory conditions, which is associated with depression. Modulation of kynurenine metabolism has been investigated as a potential mechanism in electroconvulsive therapy (ECT), an effective treatment for major depressive disorder, particularly in late-life depression. However, results have been inconclusive. Here we aimed to investigate changes in tryptophan and kynurenines in older patients treated with ECT. We analyzed levels of tryptophan, eight kynurenine pathway metabolites and the inflammation marker neopterin in serum samples collected at baseline and after a full ECT series for 48 patients with late-life depression from the Dutch MODECT study. There were no significant changes in the concentration of single metabolites after ECT, but a significant reduction in the ratio of kynurenic acid to 3-hydroxykynurenine (KA/HK). Analyses of change in kynurenines after ECT in remitters and non-remitters revealed no clear patterns or link to the therapeutic effect of ECT. There was considerable covariation between neopterin and several kynurenines. Variations in diet and serum collection timing may have impacted the results. This study did not show consistent changes in the kynurenine pathway activation or balance between neuroactive metabolites after ECT. Still, changes in kynurenines were strongly related to changes in neopterin concentrations. This demonstrates the importance of considering inflammation when investigating the effect of ECT on the kynurenine pathway." @default.
- W4328103738 created "2023-03-22" @default.
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- W4328103738 date "2023-04-01" @default.
- W4328103738 modified "2023-10-14" @default.
- W4328103738 title "The effect of electroconvulsive therapy (ECT) on serum kynurenine pathway metabolites in late-life depression" @default.
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- W4328103738 doi "https://doi.org/10.1016/j.jadr.2023.100578" @default.
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