Late Life Depression Clinical Trial
Official title:
Theta Burst Stimulation, Transcranial Magnetic Stimulation, Late Life Depression, Suicidal Ideation, Functional Magnetic Resonance Imaging, Dorsolateral Prefrontal Cortex, Ventrolateral Prefrontal Cortex
Transcranial magnetic stimulation (TMS) is a noninvasive brain stimulation technique, its approved therapeutic indication is high-frequency stimulation to the left dorsolateral prefrontal cortex (DLPFC) for treatment resistant.
investigators design a prospective three-year study to exam the effect of TBS on reducing suicidality targeted at left DLPFC vs VLPFC, and guided by task fMRI neuronavigation and sham. Investigators will adopt personalized left DLPFC and VLPFC localization from baseline task fMRI data. Due to the global brain atrophic changes in the older adults, this issue has been even more important. Investigators will enroll 163 late life depression cases, they will be randomly allocated to either DLPFC group (65 cases), or VLPFC group (65 cases) and sham group (33 cases). To sum up, investigators seek to evaluate the impact of an acute course of TBS guided by tsked fMRI neuronavigation on suicidal ideation, and through follow-up for 6 months, investigators expect to examine (1) suicidal ideation, structural and functional brain differences, inflammatory markers pre/post TBS treatment, explore the link between the mechanism underlying of TBS on brain connectivity and therapeutic effects (2) Association of suicide ideation and neurocognitive function, inflammatory factors and brain imaging data. Exploratory analysis will assess suicide ideation as mediator in the association of neurocognitive deficit and functional connectivity or neurocognitive deficit as mediator in the association of suicide ideation and brain imaging data (3) The trajectories of suicidal ideation in late life depression, to analysis whether the association of cognitive dysfunction and suicidal ideation occurs across time and the prediction of neurocognitive function.(4) Explore the association of suicidal ideation the depression severity, to test if suicidal ideation could be an independent treatment target (5) Investigate the plausible predictors of neuropsychological profiles or neuroimaging findings associated to the effect of TBS in reducing suicidal ideation, which could provide a more efficient strategy for suicide prevention in the elder. ;
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