Intra-cortical Inhibition and Cognitive Deficits in Schizophrenia
SchizophreniaCognitive deficit is a core symptom of schizophrenia (SZ), but its pathological mechanism is poorly understood and the treatment effect is poor. The excitatory-inhibitory microcircuit (E-I) function imbalance formed by inhibitory interneurons and excitatory pyramidal cells in the cerebral cortex is a new mechanism of cognitive deficits in SZ discovered in recent years. Cortical E-I is expected to be a new target for the treatment of cognitive deficits in SZ. Paired transcranial magnetic stimulation (ppTMS)-induced intracortical inhibition (ICI) is dependent on cortical E-I functional integrity. We found that ICI deficiency is stable in SZ and is closely related to cognitive function. Therefore, ICI is likely to be a system-level biomarker for cognitive deficits caused by E-I imbalance. However, no study has yet explored the genetic basis of ICI and its impact on the occurrence, development and treatment response of cognitive deficits in SZ. Based on this, we intend to verify the value of ppTMS-induced ICI as a biomarker of E-I imbalance in SZ patients and normal controls at different stages: 1. To explore the correlation of ICI with multidimensional cognitive deficits and E-I pathway genes; 2. To explore ICI Combining candidate genes and serum inflammatory factors can predict whether TMS can improve the efficacy of cognitive deficits, and can be used for precise treatment of SZ cognitive deficits at the level of pathological mechanisms.
A Study To Evaluate The Effect Of A Supratherapeutic Dose Of MK-8189 On The QTc Interval In Participants...
SchizophreniaThe primary purpose of this study to evaluate the effect of a supratherapeutic dose of 80 mg MK-8189 on the QT interval corrected for heart rate (QTc interval) and to assess the safety and tolerability of multiple once-daily doses of MK-8189 in participants with schizophrenia. The primary hypothesis is that the administration of an 80 mg MK-8189 dose on Day 2 does not prolong the QTc interval to a clinically significant degree. Specifically, the true mean difference (MK-8189 - placebo) in QTc change from baseline is less than 10 milliseconds (msec).
The Effect of Social Skills Intervention on Praxis and Social Functioning in Individuals With Schizophrenia...
SchizophreniaThis study will be carried out with individuals diagnosed with schizophrenia who continue to community mental health. Social skills training will be applied in the study. This study will be conducted to examine the effect of social skills training on praxis and social functionality in individuals with schizophrenia.
A Study of MK-5720 in Participants With Schizophrenia (MK-5720-001)
SchizophreniaThe purpose of this study is to evaluate the safety, tolerability, and pharmacokinetics (PK) of single ascending intramuscular doses of MK-5720, and the safety and tolerability of multiple once-daily oral doses of MK-8189, in participants with schizophrenia. The primary study hypothesis is that the administration of MK-5720 is safe and well tolerated.
The Effects of Non-invasive Neuromodulation on Illness Awareness in Schizophrenia
SchizophreniaAnosognosiaThis study aims to determine the clinical and functional imaging effects of serial CVS on illness awareness in schizophrenia. Specifically, the investigators aim to: Determine if twice-daily CVS for 4 weeks will improve illness awareness compared to the sham condition in participants with schizophrenia. Illness awareness will be assessed at pre- and post-CVS, and weekly thereafter for 4 weeks. Examine changes in brain network activity (blood oxygen level dependent-BOLD in response to an illness awareness task) pre- and post-CVS. This will serve as a biomarker to rigorously test whether repeated CVS engages the PPA associated with illness awareness.
A Study to Assess the Efficacy and Safety of KarXT in Acutely Psychotic Hospitalized Chinese Adult...
SchizophreniaA Phase 3, Multicenter, Two-part Study with a 5-week Double-blind Part (Randomized, Parallel-group, Placebo-controlled) followed by a 12-week Open-label Extension Part, to Evaluate the Efficacy and Safety of KarXT in Acutely Psychotic Hospitalized Chinese Adult Subjects with DSM-5 Schizophrenia
Examining the Efficacy of a Virtual Reality Cognitive Remediation Program for People Living With...
Psychotic DisordersSchizophrenia1 moreIndividuals living with a psychotic disorder often experience changes to their thinking and social skills that can lead to challenges with work, school, relationships and living independently. One intervention to target these areas is cognitive remediation therapy, which can be delivered in virtual reality to help apply the skills and strategies learned to day-to-day life. Over the past few years, our team has co-developed a cognitive remediation program in virtual reality with healthcare professionals and people with lived experiences of psychosis. The current trial tests the feasibility and efficacy of this cognitive remediation program in virtual reality at improving thinking skills, social skills, and daily life functioning.
A Study to Evaluate Safety and Tolerability of CVL-231 (Emraclidine) in Adult Participants With...
SchizophreniaThe primary purpose of this study is to assess the long-term safety and tolerability of oral emraclidine in adult participants with schizophrenia.
Impact of Cerebellar TMS on Brain and Cognitive Functions in Schizophrenia: a Pilot Study
SchizophreniaCerebellar Function1 moreThis is a single-site, sham-controlled, randomized trial in a total of 60 subjects between ages 18 and 40 years with schizophrenia. This study will investigate the effects of 4-week rTMS treatment on brain and cognitive functions in patients. Subjects will be randomized to one of the following arms: Arm 1: Standard of Care (SOC) and active rTMS Arm 2: Standard of Care (SOC) and sham rTMS Each participant will receive rTMS five days per week, for four consecutive weeks. Functional magnetic resonance imaging (fMRI) scans, clinical assessments, and cognitive tests will be performed at baseline, end of the 2nd week, and end of the 4th week.
Study of Two Digital Therapeutics for the Treatment of Experiential Negative Symptoms of Schizophrenia...
SchizophreniaThis study evaluates the efficacy of two prescription digital therapeutics (PDT) in addition to standard of care (SOC) therapy for the treatment of experiential negative symptoms of schizophrenia in late adolescents and adults.