Lower LINE-1 methylation in first-episode schizophrenia patients with the history of childhood trauma
2015
Aim: We investigated methylation of DNA repetitive sequences (LINE-1 and BAGE) in peripheral blood leukocytes from first-episode schizophrenia (FES) patients and healthy controls (HCs) with respect to childhood adversities. Materials & methods: Patients were divided into two subgroups based on the history of childhood trauma – FES(+) and FES(-) subjects. The majority of HCs had a negative history of childhood trauma – HCs(-) subjects. Results: FES(+) patients had significantly lower LINE-1 methylation in comparison with FES(-) patients or HC(-) subjects. Emotional abuse and total trauma score predicted lower LINE-1 methylation in FES patients, while general trauma score was associated with lower BAGE methylation in HCs. Conclusion: Childhood adversities might be associated with global DNA hypomethylation in adult FES patients.
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