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Background: Several studies have described the presence of perceived cognitive dysfunction amongst Asian patients with major depressive disorder (MDD). To date, no study has been conducted investigating the predictors of perceived cognitive dysfunction amongst Asian MDD patients.
Methods: This was a post-hoc analysis of the Cognitive Dysfunction in Asian patients with Depression (CogDAD) study. Descriptive statistics were used to describe the most common cognitive complaints by patients. Univariate and multivariate analyses were performed to determine variables associated with perceived cognitive dysfunction (Perceived Deficit Questionnaire-Depression, PDQ-D).
Results: The CogDAD study population is comprised of MDD patients with mild-to-moderate depression (Patient Health Questionnaire 9-item [PHQ-9]: 11.3 ± 6.9) who reported perceived cognitive dysfunction (PDQ-D = 22.6 ± 16.2). The most common cognitive complaints were: mind drifting (42.3%), trouble making decision (39.6%) and trouble concentrating (38.0%). Predictors of perceived cognitive dysfunction were: being Southeast Asians (vs. Taiwanese) (p < 0.001), current episode longer than 8 weeks (vs. 1-8 weeks) (p < 0.05), the presence of disability (vs. no disability) (p < 0.05), younger age (p < 0.01), and higher PHQ-9 total scores (p < 0.001).
Limitations: The causal relationship between predictive variables and PDQ-D could not be tested due to the cross-sectional nature of the study. Furthermore, a neuropsychological test was not included in the CogDAD study and use of concomitant medications, including anti-depressants, could have impacted patient's perceived cognitive ability.
Conclusions: The present study results suggest a potential role for subjective cognitive assessment in patients with MDD who are young, with long durations of depression or severe depression.
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http://dx.doi.org/10.1016/j.jad.2018.02.014 | DOI Listing |
Nature
September 2025
Picower Institute for Learning and Memory, Massachusetts Institute of Technology, Cambridge, MA, USA.
Loss-of-function variants in the lipid transporter ABCA7 substantially increase the risk of Alzheimer's disease, yet how they impact cellular states to drive disease remains unclear. Here, using single-nucleus RNA-sequencing analysis of human brain samples, we identified widespread gene expression changes across multiple neural cell types associated with rare ABCA7 loss-of-function variants. Excitatory neurons, which expressed the highest levels of ABCA7, showed disrupted lipid metabolism, mitochondrial function, DNA repair and synaptic signalling pathways.
View Article and Find Full Text PDFAlcohol Clin Exp Res (Hoboken)
September 2025
Department of Neuroscience and Experimental Therapeutics, Penn State College of Medicine, Hershey, Pennsylvania, USA.
Background: Prenatal alcohol exposure (PAE) causes fetal alcohol spectrum disorder (FASD) and is associated with various cognitive and sensory impairments, including olfactory dysfunction. While both genetic and environmental factors contribute to olfactory dysfunction, PAE is considered a significant factor affecting brain development, including the olfactory system. In this study, we investigated the impact of PAE on the developing olfactory bulb (OB), specifically focusing on OB RGCs-radial glial cells that give rise to OB projection neurons.
View Article and Find Full Text PDFJ Safety Res
September 2025
MAIC/UniSC Road Safety Research Collaboration, University of the Sunshine Coast, 90 Sippy Downs Drive, Sippy Downs, Queensland 4556, Australia.
Introduction: Despite decades of research and intervention, aggressive driving behavior (ADB) remains a prevalent risk on our roads. This study aimed to systematically review how drivers' personality traits, perceptual tendencies, self-regulatory capacity, and psychological functioning, have been linked to the engagement of ADBs.
Method: Under guidance of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses, a literature search was performed in four databases, followed by a manual search in Google Scholar.
Brain Res
September 2025
Department of Neurology, Shanghai Sixth People's Hospital, Shanghai 200233, China. Electronic address:
Migraine is a complex neurological disorder influenced by multiple genetic susceptibility factors, yet current animal models fail to fully recapitulate its human-specific pathophysiology. In this study, we explored the potential mechanisms underlying migraine by examining functional abnormalities and molecular dysregulation in glutamatergic neurons derived from induced pluripotent stem cells (iPSCs) of migraine patients. As key excitatory cells in the central nervous system, glutamatergic neurons are implicated in migraine through altered excitability, ion channel dysfunction, and dysregulation of nociceptive signaling molecules.
View Article and Find Full Text PDFBrain Res Bull
September 2025
Department of Neuroscience of Disease, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan. Electronic address:
Mutations in the UBE3A gene are responsible for neurodevelopmental disorders (NDDs), including Angelman syndrome (AS), which is characterized by developmental delays, impaired motor coordination, and cognitive disabilities. In recent years, UBE3A mutations have also been linked to autism spectrum disorders (ASD), due to their significant role in synaptic plasticity and cognitive function. Although substantial research has utilized mammalian models, the zebrafish (Danio rerio) provides unique opportunities to investigate gene functions owing to their transparent embryos, rapid development, and suitability for large-scale genetic and behavioral studies.
View Article and Find Full Text PDF