View clinical trials related to Schizophrenia.
Filter by:We investigated the effects of Ginkgo biloba extract on the symptoms and cognitive functioning in patients with schizophrenia
Schizophrenia is a progressive psychiatric disorder with a lifetime prevalence of 1%, its etiology is not fully understood, and it progresses with relapses. There are significant differences between patients in the age of onset, frequency of attacks, response to treatment, and clinical course of the disease. Failure to respond adequately to treatment is defined as resistance to treatment and poses a great challenge in the clinical management of the disease, but the exact cause of treatment resistance has not been clarified yet. Neurodevelopmental hypothesis, neurodegenerative hypothesis, stress-diathesis hypothesis are some of them. In the neurodegenerative hypothesis, it is thought that biochemical changes cause chronic and progressive disorders of the nervous system, and schizophrenia is considered as one of these disorders. S100B, one of the biomarkers released from the central nervous system, is a glycoprotein synthesized by astrocytes; At low concentration, it ensures neuron survival, while at high concentration it causes neuronal cell apoptosis and is associated with neurodegeneration. GFAP on the other hand, can be measured in serum in proportion to the degree of damage by passing into the bloodstream as a result of astrocyte damage. It has been shown that these markers are associated with neurodegenerative diseases, autoimmune diseases and cerebrovascular pathologies and can be measured at a significant level in the blood. As far as is known, neurodegeneration has been found in patients with schizophrenia; however, there are not enough studies in the literature regarding the relationship of this neurodegeneration with treatment response and resistance. In recent years, many biomarker studies related to schizophrenia have been conducted. These studies continue in many different areas such as the early diagnosis of schizophrenia, the treatments to be applied after diagnosis, the response to the treatment given, and the clinical course of the disease, but no biomarker indicating the desired results has yet been found. In this study, measurement of s100B and GFAP serum levels in patients with treatment-resistant schizophrenia, remission schizophrenia and healthy controls, and evaluation of their relationship with response to treatment; Thus, it is aimed to investigate these points that have not been fully elucidated in the pathogenesis of schizophrenia and their use as biomarkers in predicting the response to treatment.
In previous studies the neuropeptide oxytocin has been in particular associated with social enhancing and anxiety relieving effects. The purpose of this study is to investigate the effect of oxytocin on empathy in patients with schizophrenia. On a neurobiological level, social effects mediated by oxytocin are based on oxytocin's influence on the complexly regulated mesocorticolimbic dopamine system. Preliminary studies have already shown that oxytocin increases neuronal connections between social reward expectancy networks and networks for socioemotional processes in the brain, which on a behavioral level leads to increased social activation, motivation, and also improved social perception. Furthermore, an increase in empathy modulated by the amygdala has been shown in healthy individuals following oxytocin administration. In particular, primary psychotic disorders, such as schizophrenia, are associated with deficits in the domain of social cognition, including empathy, with the degree of negative symptoms playing an important mediating role. Another study demonstrated a significantly lower expression of empathy as well as a significantly lower oxytocin level in patients with schizophrenia compared to healthy subjects. According to the hypothesis of social salience, which describes an increased importance of certain social stimuli, the effect of oxytocin varies depending on specific contexts and individual variables of the perceiving person, such as the degree of negative symptoms. Therefore, based on such preliminary findings, the research project will explore an effect of oxytocin on empathy within a positively experienced and controlled context, especially in patients with schizophrenia regarding their negative symptoms.
The purpose of this trial is to characterize the effects of 2 oral doses (over 8 weeks total) of CVL-231 on ambulatory blood pressure and heart rate in patients with stable schizophrenia.
Total cholesterol levels and other lipids are associated with violence in psychiatric patients. There is a paucity of studies on preventive interventions. In this study, an integrated multimodal lifestyle intervention (MLifeI) for management of repetitive violence in schizophrenia is proposed. A controlled clinical trial was carried out to evaluate the effects of MLifeI on management of repetitive violence through regulation of serum lipids, TC in particular, to the recommended levels in schizophrenia. The investigators examined whether the MLifeI could: 1. regulate or balance lipid profiles; 2. reduce violence risk; 3. improve impulsivity; and 4. improve general cognitive functioning.
Moral cognition is an important and multidimensional, but often overlooked, determinant of violence. Very few interventions have systematically examined the role of moral reasoning, anger management and problem-solving together in violence. A randomized controlled trial was conducted to comprehensively evaluate the sustained effects of an integrated Moral Reasoning Development Intervention (MRDI) on management of repetitive violence in schizophrenia. This study placed special emphasis on essential components related to moral reasoning and violence in patients with schizophrenia. Evaluations including measures of violence, moral reasoning, ethical valuation and judgement, decision-making, conflict management style, and personality traits, were performed at baseline, end of intervention, and 1-month follow-up after intervention. MRDI was superior to treatment-as-usual in improving moral reasoning and related variables and violence outcomes. In comparison with the treatment-as-usual group, patients in the MRDI group showed improved levels of moral reasoning whereas decreased levels of violent behaviors. The MRDI participants also experienced significantly greater improvements or changes in their ethical valuation and judgement, decision-making style and preferences, and conflict management style. Our findings provide important implications for risk assessment and violence management and prevention.
This study is a large population-based analysis in the United Kingdom (UK) using routine primary care data to investigate the risk of mental health conditions in children, adolescents and young adults with Inflammatory Bowel Disease, compared to those without Inflammatory Bowel Disease. The study will also compare the impacts on quality-of-life outcomes and use of healthcare services between people with Inflammatory Bowel Disease with and without mental health conditions.
This is an Open-Label, One-Sequence Study to Evaluate the Steady- State Comparative Bioavailability of Intramuscular Risperidone ISM® and EU Risperdal® (Sourced From Germany).
The negative symptoms and cognitive deficits are common in patients with schizophrenia, and do not respond well to antipsychotics. The effective treatments for negative symptoms and cognitive impairment are still to be explored. rTMS is a safe and non-invasive physical treatment, some studies has been indicated that the high frequency rTMS could increase the excitability of cortex, and has potentials to improve negative symptoms and cognitive function in schizophrenia. In this study, we explore the effects of iTBS on negative symptoms and cognitive function based on identifying the brain network connection of schizophrenia symptoms.
The primary purpose of this randomized, double-blind, placebo-controlled cross-over study is to record and measure 40 Hz-auditory steady-state response (ASSR) in healthy controls (HC) and participants with mild-to-moderate schizophrenia (SZ) to determine if the mean inter-trial coherence (ITC) magnitude derived from the 40 Hz-ASSR is lower in SZ than in HC at baseline.