N-methyl-D-aspartate 2b Receptor Subtype (NR2B) Promoter Methylation in Patients During Alcohol Withdrawal

Overview

Journal J Neural Transm (Vienna)

Specialties Neurology
Physiology

Date 2009 Apr 8

PMID 19350219

Citations 30

Authors

Teresa Biermann

Udo Reulbach

Bernd Lenz

Helge Frieling

Marc Muschler

Thomas Hillemacher

Johannes Kornhuber

Stefan Bleich

Affiliations

Soon will be listed here.

Abstract

NMDA receptors and especially the NR2B receptor subtype play a crucial role during chronic ethanol consumption and alcohol withdrawal. Therefore, the NR2B receptor subtype expression in peripheral blood cells of 32 male patients suffering from alcohol dependency were assessed through quantitative RT-PCR and to explore regulating epigenetic mechanisms, a methylation analysis was conducted using bisulfite sequencing of a fragment of the NR2B promoter region. The expression of the NR2B receptor increased significantly during the first 24 h of withdrawal treatment (day 1; t = 4.1, P = 0.001), and also on and day 3 (t = 2.4; P = 0.029). The severity of alcohol drinking pattern, measured by lifetime drinking and daily ethanol intake, was negatively correlated with the methylation of a defined cluster of five CPG-sites within the NR2B promoter (lifetime drinking: Spearman's rho = -0.55; P = 0.013; daily ethanol intake: rho = -0.46; P = 0.043). These findings might explain the observation of an impact of alcohol consumption patterns on the gravity of withdrawal symptoms.

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