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Effects of short-term, high-frequency repetitive transcranial magnetic stimulation to bilateral dorsolateral prefrontal cortex on smoking behavior and cognition in patients with schizophrenia and non-psychiatric controls.

Abstract：

BACKGROUND:High rates of tobacco smoking and smoking cessation failure in schizophrenia may be related to prefrontal cortical dysfunction. Novel treatment options for tobacco use disorder are needed given the limited efficacy of current pharmacotherapies. Preliminary evidence suggests high-frequency repetitive transcranial magnetic stimulation (rTMS) to bilateral dorsolateral prefrontal cortex (DLPFC) may suppress tobacco craving in smokers with schizophrenia. The goal of this study was to determine effects of rTMS for tobacco craving and cognition using a short-term (3-day) human laboratory paradigm. METHODS:Bilateral active (20Hz) versus sham rTMS stimulation was administered in a counterbalanced, double-blind, cross-over design to thirteen smokers with schizophrenia and n=14 non-psychiatric smoking controls. Participants were studied at baseline (smoking satiated), after 16h of smoking abstinence, and after smoking reinstatement. Primary outcome measures included tobacco craving, withdrawal and cognition. RESULTS:Overnight abstinence produced a significant increase in tobacco craving and withdrawal, and impaired verbal memory and visuospatial working memory in both diagnostic groups; these effects were reversed with smoking reinstatement. However, active rTMS did not modify this pattern of results. Moreover, active versus sham rTMS had no significant effects on cognitive outcomes, and was not associated with significant adverse events. CONCLUSIONS:Our preliminary findings suggest that short-term rTMS administration may not be sufficient enough to modify cognition, craving, and withdrawal outcomes in smokers with schizophrenia (NCT00736710). Longer-term, controlled treatment studies examining effects of rTMS on smoking behaviors and cognition in schizophrenia are warranted.

journal_name

Schizophr Res

journal_title

Schizophrenia research

authors

Kozak K,Sharif-Razi M,Morozova M,Gaudette EV,Barr MS,Daskalakis ZJ,Blumberger DM,George TP

doi

10.1016/j.schres.2018.02.015

subject

Has Abstract

pub_date

2018-07-01 00:00:00

pages

441-443

eissn

0920-9964

issn

1573-2509

pii

S0920-9964(18)30089-6

journal_volume

197

pub_type

信件

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Effects of short-term, high-frequency repetitive transcranial magnetic stimulation to bilateral dorsolateral prefrontal cortex on smoking behavior and cognition in patients with schizophrenia and non-psychiatric controls.