Key result
Short-term antidepressants are linked to increased KCNE1 and SCN5A methylation and corresponding ECG alterations.
Why the study?
To investigate the influence of antidepressant drugs on the methylation status of KCNE1, KCNH2, and SCN5A promoters and ECG parameters in adult psychiatric patients.
Does short-term antidepressant therapy alter DNA methylation of ion channel genes and ECG parameters in adult psychiatric patients?
Observational (n=34)
Does short-term antidepressant therapy alter DNA methylation of ion channel genes and ECG parameters in adult psychiatric patients?
Short-term antidepressant use increases DNA methylation in KCNE1 and SCN5A promoters, which correlates with ECG alterations in psychiatric patients.
Answers are grounded in this paper and cite their sources.
Antidepressant-associated KCNE1/SCN5A methylation changes correlated with ECG alterations; hypothesis-generating for arrhythmia risk and should not yet change practice.
Aim: This study investigated the influence of antidepressant drugs on methylation status of KCNE1, KCNH2 and SCN5A promoters and ECG parameters in adult psychiatric patients. Materials & methods: Electrocardiographic evaluation (24 h) and blood samples were obtained from 34 psychiatric patients before and after 30 days of antidepressant therapy. Methylation of promoter CpG sites of KCNE1, KCNH2 and SCN5A was analyzed by pyrosequencing. Results: Three CpG and four CpG sites of KCNE1 and SCN5A, respectively, had increased % methylation after treatment. Principal component analysis showed correlations of the methylation status with electrocardiographic variables, antidepressant doses and patient age. Conclusion: Short-term treatment with antidepressant drugs increase DNA methylation in KCNE1 and SCN5A promoters, which may induce ECG alterations in psychiatric patients.
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Nascimento et al. (2022) conducted an observational in Psychiatric patients (n=34). Antidepressant drugs vs. Baseline (before treatment) was evaluated on Methylation status of KCNE1, KCNH2 and SCN5A promoters and ECG parameters. Short-term treatment with antidepressant drugs increased DNA methylation in KCNE1 and SCN5A promoters, which correlated with ECG alterations in psychiatric patients.
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