The relationship between subjective appraisal of cognitive deficits and symptom severity in schizophrenia is unclear. Insight reportedly affects both factors. Our aim is to further asses the relationship between subjective perception of cognitive deficits, symptom severity and lack of insight as a mediator variable. 109 subjects with schizophrenia were evaluated. Positive and Negative Syndrome Scale (PANSS) was modelled as independent variable, Subjective Scale to Investigate Cognition in Schizophrenia (SSTICS) as dependent and "Lack of Insight" (LoI) PANSS Item as mediator one. Mediation was assessed using bootstrap estimation approach. LoI acts as a suppressor variable (i.e., it enhances the relation between the independent and dependent variable) between Negative Symptoms and SSTICS, while showing a mediation effect between Depressive symptoms and SSTICS. LoI has a central role in mediating the relationship between negative and depressed symptoms on the one hand and self-appraisals of cognitive deficits (SACD) assessed with SSTICS on the other. Its suppressor role between negative symptoms and STICSS favour a direct effect of negative symptoms on SACD. On the other hand, its mediator role between depression and SSTICS is consistent with several reports of the 'insight paradox' of an enhanced severity of depression in patients with higher awareness of their disability.
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http://dx.doi.org/10.1007/s00406-019-01082-1 | DOI Listing |
Front Neurol
January 2025
Department of Radiology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.
Objective: To investigate the altered characteristics of cortical morphology and individual-based morphological brain networks in type 2 diabetes mellitus (T2DM), as well as the neural network mechanisms underlying cognitive impairment in T2DM.
Methods: A total of 150 T2DM patients and 130 healthy controls (HCs) were recruited in this study. The study used voxel- and surface-based morphometric analyses to investigate morphological alterations (including gray matter volume, cortical thickness, cortical surface area, and localized gyrus index) in the brains of T2DM patients.
Tzu Chi Med J
August 2024
Institute of Medical Sciences, Tzu Chi University, Hualien, Taiwan.
Schizophrenia (SCZ) is a chronic psychotic disorder that profoundly alters an individual's perception of reality, resulting in abnormal behavior, cognitive deficits, thought distortions, and disorientation in emotions. Many complicated factors can lead to SCZ, and investigations are ongoing to understand the neurobiological underpinnings of this condition. Presynaptic Netrin G1 and its cognate partner postsynaptic Netrin-G-Ligand-1 (NGL-1) have been implicated in SCZ.
View Article and Find Full Text PDFMater Today Bio
December 2024
Department of Pharmacology, Nanomedicine Engineering Laboratory of Jilin Province, College of Basic Medical Sciences, Jilin University, Changchun, 130021, China.
Alzheimer's disease (AD) is characterized by progressive cognitive decline due to neuronal damage and impaired neurogenesis. Preserving neuronal integrity and stimulating neurogenesis are promising therapeutic strategies to combat AD-related cognitive dysfunction. In this study, we synthesized metformin carbon dots (CMCDs) using a hydrothermal method with metformin hydrochloride and citric acid as precursors.
View Article and Find Full Text PDFJMIR Hum Factors
January 2025
Medical Informatics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany.
Background: Dementia is a widespread syndrome that currently affects more than 55 million people worldwide. Digital screening instruments are one way to increase diagnosis rates. Developing an app for older adults presents several challenges, both technical and social.
View Article and Find Full Text PDFJ Clin Res Pediatr Endocrinol
January 2025
Cam and Sakura City Hospital Department of Pediatrics, Division of Pediatric Endocrinology, Istanbul, Turkey.
Objectives: Neudesin is a newly discovered protein mainly secreted from adipose tissue and the brain. It plays a role as a neurotrophic factor in the brain and a negative regulator of energy expenditure. Neurodevelopmental delay and cognitive dysfunction are common features in cases with congenital hypothyroidism (CH) without treatment.
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