Background And Hypothesis: Convergent evidence shows the presence of brain metabolic abnormalities in psychotic disorders. This study examined brain reductive stress and energy metabolism in people with psychotic disorders with impaired or average range cognition. We hypothesized that global cognitive impairment would be associated with greater brain metabolic dysregulation.
Study Design: Participants with affective and non-affective psychosis (n = 62) were administered the MATRICS Consensus Cognitive Battery (MCCB) and underwent a 31P-magnetic resonance spectroscopy scan at 4T. We used a cluster-analysis approach to identify 2 clusters of participants with and without cognitive dysfunction. We compared clusters on brain redox balance or reductive stress, measured by the ratio of nicotinamide adenine dinucleotide (NAD+) and its reduced form NADH, in addition to creatine kinase (CK) enzymatic activity and pH.
Study Results: The mean (SD) age of participants was 25.1 (6.3) years. The mean NAD+/NADH ratio differed between groups, with lower NAD+/NADH ratio, suggesting more reductive stress, in the impaired cognitive cluster (t = -2.60, P = .01). There was also a significant reduction in CK activity in the impaired cognitive cluster (t = -2.19, P = .03). Intracellular pH did not differ between the 2 cluster groups (t = 1.31, P = .19). The clusters did not significantly differ on severity of mood and psychotic symptomatology or other measures of illness severity.
Conclusions: Our results demonstrate that psychotic disorders with greater cognitive impairment have greater brain metabolic dysregulation, with more reductive stress and decrease in energy metabolic rate markers. This provides new evidence for the potential of emerging metabolic therapies to treat cognitive deficits in psychotic disorders.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1093/schbul/sbaf003 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Transcutaneous vagus nerve stimulation for Parkinson's disease: a systematic review and meta-analysis.
Front Aging Neurosci
January 2025
Affiliated Rehabilitation Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China.
Background: Transcutaneous vagus nerve stimulation (tVNS) has emerged as a novel noninvasive adjunct therapy for advanced Parkinson's disease (PD), yet no quantitative analysis had been conducted to assess its therapeutic effect.
Objectives: This review aimed to investigate the efficacy of tVNS on motor function, other potential clinical targets and its safety in various treatment conditions.
Methods: We searched six databases for randomized controlled trials (RCTs) that involved treating PD patients with tVNS.
Exploring the Effect of Brief Preventive Videos on Mental Health Help-Seeking for Early Psychosis in a Young Community Sample.
Early Interv Psychiatry
February 2025
University. Grenoble Alpes, University Savoie Mont Blanc, Grenoble, France.
Introduction: A key factor influencing the duration of untreated psychosis is that young individuals typically do not seek help during their initial psychotic experiences. This online study aimed to explore the efficacy of preventive video interventions providing information on psychosis on the attitudes towards seeking mental health care among young adults from the general population.
Methods: Participants (N = 147) were randomised to one of the following online conditions: a short 3-min video of an empowered patient or of a psychiatrist describing different aspects of mental illness, a short control video or no video.
Evaluating Response to a Cognitive Behavioural Therapy for Psychosis-Informed Family Intervention at Variable Duration of a Psychotic Illness.
Early Interv Psychiatry
February 2025
Department of Psychiatry and Behavioral Sciences, University of Washington, Seattle, Washington, USA.
Objective: Early intervention in psychosis is associated with favourable outcomes. We investigated whether loved ones' illness duration moderated caregiver outcomes following a Cognitive Behavioural Therapy-informed Family Intervention for psychosis (FIp).
Methods: We conducted a secondary analysis of measures of FIp participants' depression and anxiety symptoms, caregiver appraisals, expressed emotion and foundational psychotherapeutic competencies at pre-, post- and 4-month follow-up.
Involuntary autobiographical memories as a transdiagnostic factor in mental disorders.
Clin Psychol Rev
January 2025
Center on Autobiographical Memory Research, Department of Psychology, Aarhus University, Denmark.
Involuntary autobiographical memories are memories of personal events that come to mind with no preceding retrieval attempts. They have been studied broadly in autobiographical memory for decades and shown to be common and mostly positive in everyday life. Clinical literature has focused on negative intrusive memories of stressful events and tended to neglect other forms of involuntary autobiographical memories.
View Article and Find Full Text PDFObjective: Aim: To investigate the etiology, pathogenesis, and effectiveness of pharmacotherapy and psychotherapeutic modalities of delusions in Schizophrenia spectrum and other Psychotic Disorders.
Patients And Methods: Materials and Methods: In our study, we included English-language studies from online databases such as Web of Science, Scopus, Google Scholar, PubMed, and the Cochrane Library conducted until January 2024 using the following keywords "delusions", "Schizophrenia spectrum and other Psychotic Disorders", "pharmacotherapy", "psychotherapy", and "antipsychotics". Scientific novelty: There is already published evidence that has studied Schizophrenia spectrum disorders from definition to treatment.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!