Comparison of Theta Burst versus 10 Hz Repetitive Transcranial Magnetic Stimulation for Craving in Smokers

Date Added
February 6th, 2024
PRO Number
Pro00121128
Researcher
Xingbao Li

List of Studies


Keywords
Brain, Healthy Volunteer Studies, Smoking
Summary

Smoking is one of the main public health problems. Smoking cessation is difficult because of nicotine dependence. Repetitive transcranial magnetic stimulation (rTMS) over the frontal head has shown to be effective in the reduction of cigarette consumption and craving. In this study, we will evaluate the efficiency of a new form of rTMS called intermittent theta-burst stimulation (iTBS) for smoking cessation.

Institution
MUSC
Recruitment Contact
Morgan Dancy
843 8765-141
maddoxm@musc.edu

RTMS manipulates imbalanced drive-reward and executive control circuitry for smoking cessation

Date Added
March 2nd, 2021
PRO Number
Pro00105723
Researcher
Xingbao Li

List of Studies


Keywords
Brain, Healthy Volunteer Studies, Smoking
Summary

Cigarette smoking is a significant public health concern. Transcranial magnetic stimulation (TMS) is a non-invasive form of brain stimulation that has already displayed remarkable potential for producing novel, non-pharmacological interventions for depression and cigarette smokers. In this study, we will use brain MRI to guide TMS therapy for smoking cessation.

Institution
MUSC
Recruitment Contact
Xingbao Li
(843) 792-5729
lixi@musc.edu

Repetitive TMS Modulates Dorsal Lateral Prefrontal-Ventral Medial Prefrontal Pathway to Decrease Craving in Smokers

Date Added
March 4th, 2014
PRO Number
Pro00032649
Researcher
Xingbao Li

List of Studies


Keywords
Brain, Smoking
Summary

Cigarette smoking causes significant morbidity and mortality in the United States. Smoking cessation is difficult, with the average smoker attempting to quit five times before permanent success. Moreover, the majority of smoking quit attempts result in relapse. Brain stimulation for smoke cessation is an exciting new area that builds on advancing neuroscience knowledge concerning the functional neurocircuitry of addiction. Cortical stimulation can now be performed non-invasively by transcranial magnetic stimulation (TMS). Several studies have shown that TMS can reduce cue-elicited craving in smokers. Previous research by our group has shown that a single session of 15 minutes high frequency (10 Hz) repetitive TMS (rTMS) at 100% motor threshold over the left dorsal lateral prefrontal cortex (DLPFC) can reduce cue-induced craving compared to sham TMS. However, the mechanism by which craving is reduced by rTMS is poorly understood both at behavioral and neural levels. Neuroimaging studies in nicotine dependence have revealed cue-related responses in numerous brain areas, including frontal, parietal cortices and subcortical areas. Recently functional magnetic resonance imaging (fMRI) studies by our group have shown that cue-induced craving induced brain activation in ventral medial prefrontal cortex (VMPFC), including medial frontal, orbital frontal and anterior cingulate. This Chair Research Development Fund (CRDF) pilot proposal will integrate two new techniques- TMS and fMRI to investigate DLPFC-VMPFC pathway in smokers. Using double-masked methods we hypothesize that cue-induced exposure will induce brain activity in VMPFC, and 15 minutes rTMS over DLPFC will reduce cue-induced craving through modulating DLPFC-VMPFC pathway (increased activity DLPFC and decreased activity VMPFC). In the one year of project, we plan to recruit 10 non-treatment-seeking nicotine-dependent cigarette smokers and 20 non-smoking participants, both males and females of all ethnic and racial groups between the ages of 18 and 60 to participate in the study. The participants will randomly receive two different types of brain stimulation: active rTMS or sham rTMS over the left DLPFC with a 1 week interval between treatments. MRI scans will be completed pre and post rTMS. The data from this pilot will provide the information needed for submitting a larger-scale investigation (R01) to investigate cue craving neutral pathway and develop a potential clinical applications of TMS in smoke cessation.

Institution
MUSC
Recruitment Contact
Xingbao Li
843 7925729
lixi@musc.edu



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