Schizophrenia Clinical Trial
Official title:
Effects of Intermittent Theta Burst Stimulation (iTBS) on Increased Appetite Induced by Antipsychotics in Patients With Schizophrenia
Antipsychotics are prone to cause metabolic side effects, including weight gain, hyperglycemia, insulin resistance, hyperlipidemia and so on, leading to a 2-3 times higher risk of death in patients with schizophrenia compared to healthy people. Conventional high-frequency rTMS have been used to treat people with obesity and showed certain effectiveness. However, studies involving schizophrenia patients and intermittent theta burst (iTBS) mode are rarely seen. The goal of this clinical trial is to evaluate the efficacy and safety of iTBS on ameliorating increased appetite induced by antipsychotics in people with schizophrenia.
The study will evaluate the efficacy and safety of iTBS on ameliorating increased appetite induced by antipsychotics in people with schizophrenia by measuring changes in clinical ratings at baseline, after all the treatments, and 2 weeks, 4 weeks after intervention. 60 schizophrenia patients will be randomized to receive active or sham interventions administered to the left dorsolateral prefrontal cortex. The experimental group will be applied to active iTBS rTMS involving 600 pulses (3 minutes), 5x daily at 60 minutes intervals for 5 days. Changes in appetite from baseline to the end of the study will be measured by Three Factor Eating Questionnaire (TFEQ), Food Cravings Questionnaire-Trait (FCQ-T), Food Cravings Questionnaire-State (FCQ-S) and Visual Analogue Scale (VAS). Clinical symptoms and mood status will be assessed by Positive and Negative Symptom Scale (PANSS), the Calgary Depression Scale for Schizophrenia (CDSS) and Clinical Global Impression (CGI). Improvement of cognition could be measured by Delay Discounting Task (DDT), Stop-signal task (SST) and MATRICS (Measurement and Treatment Research to Improve Cognition in Schizophrenia) Consensus Cognitive Battery (MCCB). Changes of appetite related Indicators of glycolipid metabolism and neuroregulatory factor, along with microflora before and after intervention will be recorded by collecting blood and feces specimens. The adverse effect will be evaluated by Treatment Emergent Symptom Scale (TESS) and Adverse Event Record Form (AERF). Task-based magnetic resonance imaging (MRI) and arterial spin labeling (ASL) will be used to measure changes of brain activity associated with food stimuli and cerebral blood flow(CBF) before and after treatment. ;
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