View clinical trials related to Schizophrenia.
Filter by:The purpose of this study is to examine changes in serum butyrate levels with the prebiotic: Prebiotin (12g/day), an oligofructose-enriched inulin (OEI); the effect of OEI on the composition of the gastrointestinal microbiota in people with schizophrenia; and the relationship of the composition of the gut microbiota to various clinical, cognitive, and neuroimaging variables.
Based on the hypothesis that high-frequency repetitive transcranial magnetic stimulation(rTMS) on the right dorsolateral prefrontal cortex(DLPFC) and left parietal cortex(LPC) could normalise cognitive abnormalities by promoting hippocampal neurogenesis and cortical-hippocampal function in patients with schizophrenia,this research plan to utilise multimodal functional magnetic imaging method(including structural MRI,resting-state functional magnetic resonance imaging and 1H-MRS) to investigate therapeutic efficacy of intermittent theta burst stimulation (iTBS) on cognitive impairment in SZ patients with memory defects,as well as to elucidate the correlation between treatment effects and hippocampal neuroplasticity.
Recent studies have suggested a strong relationship between cannabis use and the level of thought disorder in subjects with schizophrenia. Moreover, the level of thought disorder has been associated with an increased functional connectivity between the temporal lobe and the Putamen. However, the brain mechanisms underlying these two relationships are still poorly known. Better understanding these mechanisms is important to improve patients' care, in particular among treatment-resistant patients. The objective of the CANDI study consists of assessing whether the level of cannabis use in patients with schizophrenia modulates the level of thought disorder via a modulation of the functional connectivity between the temporal lobe and the Putamen. Analyses will be controlled for the composition of cannabis, in particular the tetrahydrocannabinol / cannabidiol ratio.
In this study, investigators designed a double-blind randomized trial to prove a more reliable evidence to show how the treatment by using high-definition transcranial direct current stimulation (HD-tDCS) can relieve negative symptoms in patients with predominant negative symptoms of schizophrenia, especially on improving participants' anhedonia condition and social cognition, through stimulating the left dorsolateral prefrontal cortex (DLPFC). Participants will be divided into active and sham HD-tDCS groups equally.
Severe mental illness (SMI) refers to the most burdensome psychiatric conditions. The need to pre-empt the onset of SMI is pressing because once SMI develops, quality of life is poor and available treatments have limited efficacy. Most risk factors for SMI are either unchangeable (e.g., genetics) or difficult to alter (e.g., low socio-economic status). In contrast, cannabis use is one specific risk factor that could be avoided. Certain individuals are more vulnerable to the harmful effects of cannabis. Genetic factors can help us identify these high-risk individuals. One in three individuals are carriers of a higher-risk genetic variant, and cannabis users with this genotype are at up to 7-fold increased risk of developing schizophrenia. In our study, genetic counselling will be provided to participants by a board-certified genetic counsellor. During the genetic counselling session, participants will have the option to receive their genotype. Participants will be counselled regarding their individualized risk of developing and of not developing SMI based on family history, whether or not they choose to use cannabis, and genotype (if the participants accept the genetic test results). The investigators hypothesize that this intervention will reduce exposure to cannabis compared to the youth who are not offered the intervention.
1. To evaluate the efficacy and safety of cariprazine at a target dose of 4.5 milligram per day (mg/d) compared with placebo in prevention of relapse in patients with schizophrenia 2. To evaluate the efficacy and safety of cariprazine at a target dose of 3.0 mg/d compared with placebo in prevention of relapse in patients with schizophrenia who were initially stabilized on a target dose of 4.5 mg/d
Recruitment of patients with schizophrenia to clinical trials is difficult and in an ongoing project different methods of recruitment have been used in order to recruit. One of the methods used have been sending potential participant to the study an invitation letter with information of the study and an invitation to make contact with a project nurse. Not many patients have replied. The aim of this study is to examine whether a simplified version of the invitation Letter, in terms of information structure and written style will encourage more patients to make contact to a project nurse.
This study is being done to develop new methods to help smokers with schizophrenia to successfully reduce their smoking and/or quit. This is not a treatment study, but will help find new techniques to create better treatments. Specifically, the investigators are interested in learning more about how thoughts and attention problems associated with schizophrenia might play a role in smoking, as well as the impact of cognitive (thinking, reasoning, and remembering) training and brain stimulation on these symptoms and on actual smoking.
Schizophrenia is associated with long-lasting health, social and financial burden for patients, families, caregivers and society. Unfortunately, 25-30% of schizophrenia patients respond poorly to antipsychotic medication. Moreover, psychotherapeutic treatment alternatives are very limited for this suffering population. This unmet clinical need requires innovation and action. Psychotherapeutic treatment alternatives such as Cognitive Behavior Therapy (CBT) provide at best moderate results. Using immersive virtual reality, we recently tested a novel psychotherapeutic intervention, Avatar Therapy (AT), where the therapist engages in a dialogue with the patient through a virtual representation of the patient's distressing voice. This approach, being both relational and experiential, provides a unique opportunity to aid patients gain control over their voice. The results of our pilot study on AT were clinically promising for the severity and distress related to hallucinations, positive symptomatology and emotion regulation. To further research in this field, the primary goal of this randomized-controlled, single-site parallel study is to show that AT is superior to CBT for the treatment of persistent auditory hallucinations in schizophrenia. Our secondary goal is to examine the effects of these interventions on emotion regulation, mood symptoms (anxiety and depression), self-esteem, level of functioning and quality of life.
This project will explore adaptations of treatments for schizophrenia, with the goal of optimizing their effectiveness in real-world clinical settings and readiness for broad deployment. Schizophrenia is associated with cognitive deficits that negatively impact essential areas of daily functioning. NY State Office of Mental Health (OMH) is the first and largest state system of care to implement a statewide program of cognitive remediation (CR), an evidence-based practice for improving cognition and aiding functional recovery. Through Cognitive Remediation to Promote Recovery (CR2PR), CR is now offered in outpatient programs, with plans to expand to more services and further adapt implementation to improve treatment outcomes. This project will work directly with OMH clinics and clinicians to build upon and improve current CR delivery methods. This project will study the impact of two adaptations. One focuses on increasing the accessibility of the program, which participants report is limited by the requirement of twice weekly attendance. This project will compare the feasibility and acceptability of delivering CR in either two clinic-based sessions (Clinic) or one clinic and one remote session (Hybrid) per week. Qualitative interviews will be conducted with stakeholders to explore the impact of the adaptation. The second adaptation is intended to improve personalization of CR by systematically accounting for individual differences in neurocognitive needs. Drawing upon convergent evidence for tailoring CR based on need for early auditory processing (EAP) training, this project examines whether integrating a measure of EAP into the current baseline assessment facilitates personalization of the menu of restorative computer-based exercises used in CR. Feasibility parameters and qualitative/quantitative data analyses of facilitators and barriers to Hybrid CR delivery will together inform further treatment refinement and the design of a larger effectiveness trial of Clinic versus Hybrid CR. This project will examine how EAP assessment is employed by practitioners to personalize the CR treatment plan and examine if EAP improvement is associated with cognitive outcomes in public practice CR settings. Finally cognitive, functional, and service use outcomes in Hybrid versus Clinic CR will be compared.