Olfaction plays a key role in our daily life, influencing food enjoyment, threat detection, mood and social relationships. Numerous studies have provided evidence of abnormal olfactory function in schizophrenia and other psychotic disorders. This pre-registered meta-analysis was conducted to (a) provide an updated overview of olfactory function in schizophrenia-spectrum disorders, and (b) examine the modulatory effects of demographic and clinical variables on distinct olfactory abilities. We complied with the PRISMA guidelines, searching throughout PubMed, MEDLINE, and PsycInfo, until the 12th of August 2023. A total of 73 publications were included, comprising data from 3282 patients and 3321 healthy controls. Results revealed that (a) patients performed significantly worse in higher-order olfactory tests (identification and discrimination) compared to healthy controls, while no differences were observed in odor sensitivity; (b) patients' performance in odor identification was moderated by education, as well as disease duration and negative symptoms. Our findings support the presence of olfactory impairments in schizophrenia-spectrum disorders, leading to significantly poorer performance in both odor identification and discrimination, but not sensitivity, when compared to healthy controls.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.schres.2024.12.001 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Olfactory Network Disruptions as Mediators of Cognitive Impairment in De Novo Parkinson's Disease.
CNS Neurosci Ther
January 2025
Department of Neurology, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China.
Objectives: Parkinson's disease (PD) is characterized by olfactory dysfunction (OD) and cognitive deficits at its early stages, yet the link between OD and cognitive deficits is also not well-understood. This study aims to examine the changes in the olfactory network associated with OD and their relationship with cognitive function in de novo PD patients.
Methods: A total of 116 drug-naïve PD patients and 51 healthy controls (HCs) were recruited for this study.
Evaluating diagnostic performance: A comparative analysis of cell-free DNA and serological test in hepatic cystic Echinococcosis.
J Helminthol
January 2025
Hacettepe University, Faculty of Medicine, Department of Radiology, Ankara, Turkiye.
Cystic Echinococcosis (CE) is a zoonotic disease caused by sensu lato. Diagnosing CE primarily relies on imaging techniques, and there is a crucial need for an objective laboratory test to enhance the diagnostic process. Today, cell-free DNAs (cfDNAs) have gained importance regarding their biomarker potential.
View Article and Find Full Text PDFRare Cell Population Analysis in Early-Stage Breast Cancer Patients.
Breast Cancer (Auckl)
January 2025
Department of Surgery, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.
Background: Circulating rare cells participate in breast cancer evolution as systemic components of the disease and thus, are a source of theranostic information. Exploration of cancer-associated rare cells is in its infancy.
Objectives: We aimed to investigate and classify abnormalities in the circulating rare cell population among early-stage breast cancer patients using fluorescence marker identification and cytomorphology.
Unlabelled: is one of the three most frequently mutated genes in age-related clonal hematopoiesis (CH), alongside and . CH can progress to myeloid malignancies including chronic monomyelocytic leukemia (CMML), and is also strongly associated with inflammatory cardiovascular disease and all-cause mortality in humans. DNMT3A and TET2 regulate DNA methylation and demethylation pathways respectively, and loss-of-function mutations in these genes reduce DNA methylation in heterochromatin, allowing de-repression of silenced elements in heterochromatin.
View Article and Find Full Text PDFObjective: To explore whether the inflammatory activity is higher in white matter (WM) tracts disrupted by paramagnetic rim lesions (PRLs) and if inflammation in PRL-disrupted WM tracts is associated with disability in people with multiple sclerosis (MS).
Methods: Forty-four MS patients and 16 healthy controls were included. 18 kDa-translocator protein positron emission tomography (TSPO-PET) with the C-PK11195 radioligand was used to measure the neuroinflammatory activity.
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!