The majority of schizophrenia-affected individuals display deficiencies in multiple cognitive domains such as attention, working memory, long-term memory, and learning, deficiencies that are stable throughout the disease. The purpose of this narrative review was to examine the effect of antipsychotics on several cognitive domains affected by schizophrenia. We searched MEDLINE, Elsevier, Scopus, and DOAJ databases for randomized controlled trials and other studies investigating the effects of typical and atypical antipsychotics on cognition in patients with schizophrenia in studies conducted in the last decade. The majority of studies included in this review showed that antipsychotics (especially SGAs) have positive effects on both cognition and general psychopathology of schizophrenia. We mention that treatment with antipsychotic substances represents an ongoing effort of the researchers, who are constantly searching for the best approach to meet the mental health needs of schizophrenia patients. Even with those positive results, it should be noted that more studies are needed in order to fully observe the various effects of certain antipsychotic substances on cognition.
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http://dx.doi.org/10.3390/brainsci14040359 | DOI Listing |
Pharmacol Res
December 2024
UniSA Clinical & Health Sciences, University of South Australia, Adelaide, South Australia 5000, Australia. Electronic address:
Gut microbial dysbiosis or altered gut microbial consortium, in schizophrenia suggests a pathogenic role through the gut-brain axis, influencing neuroinflammatory and neurotransmitter pathways critical to psychotic, affective, and cognitive symptoms. Paradoxically, conventional psychotropic interventions may exacerbate this dysbiosis, with antipsychotics, particularly olanzapine, demonstrating profound effects on microbial architecture through disruption of bacterial phyla ratios, diminished taxonomic diversity, and attenuated short-chain fatty acid synthesis. To address these challenges, novel therapeutic strategies targeting the gut microbiome, encompassing probiotic supplementation, prebiotic compounds, faecal microbiota transplantation, and rationalised co-pharmacotherapy, show promise in attenuating antipsychotic-induced metabolic disruptions while enhancing therapeutic efficacy.
View Article and Find Full Text PDFBrain Res
December 2024
Ningxia Clinical Research Institute, People's Hospital of Ningxia Hui Autonomous Region, Yinchuan, Ningxia, PR China.
The study aimed to examine the effects of Quetiapine, an atypical antipsychotic medication with purported neuroprotective qualities, on cognitive function and synaptic plasticity in epileptic rats. This investigation also sought to elucidate the mechanisms by which quetiapine influences the activity of the cyclic adenylate response element binding protein (CREB)/brain-derived neurotrophic factor (BDNF) signaling pathway and metallomatrix proteinase-9 (MMP9) expression in the context of epilepsy. The epileptic model was induced in rats through the administration of pilocarpine, with normal rats serving as the control group.
View Article and Find Full Text PDFSchizophr Bull
December 2024
Clinical and Translational Sciences Lab, Douglas Research Centre, Montreal, Quebec H4H 1R3, Canada.
Background And Hypothesis: Cognitive impairments are particularly disabling for patients with a psychotic disorder and often persist despite optimization of antipsychotic treatment. Thus, motivating an extension of the research focus on the endocannabinoid system. The aim of this study was to evaluate group differences in brain fatty acid amid hydrolase (FAAH), an endocannabinoid enzyme between first-episode psychosis (FEP), individuals with clinical high risk (CHR) for psychosis and healthy controls (HCs).
View Article and Find Full Text PDFSchizophr Bull
December 2024
Department of Psychiatry, Affiliated Brain Hospital of Nanjing Medical University, Nanjing, 210029, China.
Background And Hypothesis: Respective abnormal structural connectivity (SC) and functional connectivity (FC) have been reported in individuals with schizophrenia. However, transmodal associations between SC and FC following antipsychotic treatment, especially in female schizophrenia, remain unclear. We hypothesized that increased SC-FC coupling may be found in female schizophrenia, and could be normalized after antipsychotic treatment.
View Article and Find Full Text PDFNeurol Int
December 2024
Natural and Humanities Sciences Center (CCNH), Experimental Morphophysiology Laboratory, Federal University of ABC (UFABC), São Bernardo do Campo 09606-070, Brazil.
Background/objectives: Antipsychotic medicines are used to treat several psychological disorders and some symptoms caused by dementia and schizophrenia. Haloperidol (Hal) is a typical antipsychotic usually used to treat psychosis; however, its use causes motor or extrapyramidal symptoms (EPS) such as catalepsy. Hal blocks the function of presynaptic D2 receptors on cholinergic interneurons, leading to the release of acetylcholine (ACh), which is hydrolyzed by the enzyme acetylcholinesterase (AChE).
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