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Wang M, Hu S, Fu X, Zhou H, Yang S, Yang C. Neurosteroids: A potential target for neuropsychiatric disorders. J Steroid Biochem Mol Biol 2024; 239:106485. [PMID: 38369032 DOI: 10.1016/j.jsbmb.2024.106485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 02/14/2024] [Accepted: 02/15/2024] [Indexed: 02/20/2024]
Abstract
Neurosteroids are steroids produced by endocrine glands and subsequently entering the brain, and also include steroids synthesis in the brain. It has been widely known that neurosteroids influence many neurological functions, including neuronal signaling, synaptic adaptations, and neuroprotective effects. In addition, abnormality in the synthesis and function of neurosteroids has been closely linked to neuropsychiatric disorders, such as Alzheimer's disease (AD), schizophrenia (SZ), and epilepsy. Given their important role in brain pathophysiology and disorders, neurosteroids offer potential therapeutic targets for a variety of neuropsychiatric diseases, and that therapeutic strategies targeting neurosteroids probably exert beneficial effects. We therefore summarized the role of neurosteroids in brain physiology and neuropsychiatric disorders, and introduced the recent findings of synthetic neurosteroid analogues for potential treatment of neuropsychiatric disorders, thereby providing insights for further research in the future.
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Affiliation(s)
- Mengyu Wang
- Department of Anesthesiology and Perioperative Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Suwan Hu
- Department of Anesthesiology and Perioperative Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Xinghuo Fu
- Department of Anesthesiology and Perioperative Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Huixuan Zhou
- Department of Anesthesiology and Perioperative Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Siqi Yang
- Department of Anesthesiology and Perioperative Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China.
| | - Chun Yang
- Department of Anesthesiology and Perioperative Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China.
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Hiller JK, Jangmo A, Tesli MS, Jaholkowski PP, Hoseth EZ, Steen NE, Haram M. Lipid Biomarker Research in Bipolar Disorder: A Scoping Review of Trends, Challenges, and Future Directions. BIOLOGICAL PSYCHIATRY GLOBAL OPEN SCIENCE 2023; 3:594-604. [PMID: 37881590 PMCID: PMC10593953 DOI: 10.1016/j.bpsgos.2023.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 07/10/2023] [Accepted: 07/13/2023] [Indexed: 10/27/2023] Open
Abstract
Bipolar disorder (BD) is a disabling disorder with heterogeneous symptom profiles and trajectories. Like many other neuropsychiatric disorders, clinical decision making related to diagnoses and choice of treatment is based on clinical assessments alone, and risk prediction for treatment success or resistance at an individual level remains sparse. An enormous effort to add biological markers to this risk prediction is ongoing. The role of lipids in normal brain functioning is well established, and several hypotheses about the role of lipids in the pathogenesis of neuropsychiatric disorders, including BD, have been made. The frequent comorbidity between neuropsychiatric disorders and cardiovascular disease, the genetic overlap of risk genes for severe mental disorders and genes involved in lipid regulation, and the lipid-altering effects of antipsychotics and mood stabilizers indicate that lipids could hold promise as biomarkers for neuropsychiatric disorders, including BD. To date, reviews of lipid biomarkers in schizophrenia and major depression have noted caveats for future investigations, while reviews of lipid biomarker research in BD is missing. In the current scoping review, we present a comprehensive overview of trends in previous research on lipid biomarkers in BD. The current literature varies greatly in the phenotypes investigated and study designs, leading to divergent findings. Small sample size; potential confounders related to physical activity, nutritional status, and medication use; and cross-sectional designs were frequently reported limitations. Future research may benefit from pivoting toward utilization of newer laboratory techniques such as lipidomics, but consistent use of study methods across cohorts is also needed.
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Affiliation(s)
| | - Andreas Jangmo
- Department of Mental Disorders, Norwegian Institute of Public Health, Oslo, Norway
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden
| | - Martin Steen Tesli
- Department of Mental Disorders, Norwegian Institute of Public Health, Oslo, Norway
- Centre for Research and Education in Forensic Psychiatry, Department of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
| | - Piotr Pawel Jaholkowski
- Norwegian Centre for Mental Disorders Research, Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Eva Zsuzsanna Hoseth
- Clinic of Mental Health and Addiction, Møre and Romsdal Health Trust, Kristiansund, Norway
| | - Nils Eiel Steen
- Norwegian Centre for Mental Disorders Research, Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Marit Haram
- Department of Mental Disorders, Norwegian Institute of Public Health, Oslo, Norway
- Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
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Yu YH, Su HM, Lin SH, Hsiao PC, Lin YT, Liu CM, Hwang TJ, Hsieh MH, Liu CC, Chien YL, Kuo CJ, Hwu HG, Chen WJ. Niacin skin flush and membrane polyunsaturated fatty acids in schizophrenia from the acute state to partial remission: a dynamic relationship. SCHIZOPHRENIA 2022; 8:38. [PMID: 35853900 PMCID: PMC9261101 DOI: 10.1038/s41537-022-00252-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Accepted: 03/28/2022] [Indexed: 11/13/2022]
Abstract
Despite the consistent finding of an attenuated niacin-induced flush response in schizophrenia, its long-term stability and relationship to the membrane polyunsaturated fatty acid (PUFA) levels remain unknown. We conducted niacin skin tests and measured the membrane PUFAs using gas chromatography among 46 schizophrenia inpatients and 37 healthy controls at the baseline and the 2-month follow-up. Attenuated flush responses were persistently observed in schizophrenia patients in both acute and partial remission states, whereas an increased flush response was found in the controls. A persistent decrease in both dihomo-gamma-linolenic acid and docosahexaenoic acid and an increased turnover of arachidonic acid (ARA) via endogenous biosynthesis were found in schizophrenia patients. A composite niacin flush score by combining those with a control-to-case ratio of >1.4 (i.e., scores at 5 min of 0.1 M, 0.01 M, and 0.001 M + 10 min of 0.01 M and 0.001 M + 15 min of 0.001 M) at the baseline was correlated positively with ARA levels among controls but not among schizophrenia patients, whereas the flush score at the 2-month follow-up was correlated positively with ARA levels among patients. The 2-month persistence of attenuated niacin-induced flush response in schizophrenia patients implies that the niacin skin test might tap a long-term vulnerability to schizophrenia beyond acute exacerbation.
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Mandal PK, Gaur S, Roy RG, Samkaria A, Ingole R, Goel A. Schizophrenia, Bipolar and Major Depressive Disorders: Overview of Clinical Features, Neurotransmitter Alterations, Pharmacological Interventions, and Impact of Oxidative Stress in the Disease Process. ACS Chem Neurosci 2022; 13:2784-2802. [PMID: 36125113 DOI: 10.1021/acschemneuro.2c00420] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Psychiatric disorders are one of the leading causes of disability worldwide and affect the quality of life of both individuals and the society. The current understanding of these disorders points toward receptor dysfunction and neurotransmitter imbalances in the brain. Treatment protocols are hence oriented toward normalizing these imbalances and ameliorating the symptoms. However, recent literature has indicated the possible role of depleted levels of antioxidants like glutathione (GSH) as well as an alteration in the levels of the pro-oxidant, iron in the pathogenesis of major psychiatric diseases, viz., schizophrenia (Sz), bipolar disorder (BD), and major depressive disorder (MDD). This review aims to highlight the involvement of oxidative stress (OS) in these psychiatric disorders. An overview of the clinical features, neurotransmitter abnormalities, and pharmacological treatments concerning these psychiatric disorders has also been presented. Furthermore, it attempts to synthesize literature from existing magnetic resonance spectroscopy (MRS) and quantitative susceptibility mapping (QSM) studies for these disorders, assessing GSH and iron, respectively. This manuscript is a sincere attempt to stimulate research discussion to advance the knowledge base for further understanding of the pathoetiology of Sz, BD, and MDD.
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Affiliation(s)
- Pravat K Mandal
- Neuroimaging and Neurospectroscopy (NINS) Laboratory, National Brain Research Centre, Manesar, Haryana 122050, India.,The Florey Institute of Neuroscience and Mental Health, Melbourne School of Medicine Campus, Melbourne 3052, Australia
| | - Shradha Gaur
- Neuroimaging and Neurospectroscopy (NINS) Laboratory, National Brain Research Centre, Manesar, Haryana 122050, India
| | - Rimil Guha Roy
- Neuroimaging and Neurospectroscopy (NINS) Laboratory, National Brain Research Centre, Manesar, Haryana 122050, India
| | - Avantika Samkaria
- Neuroimaging and Neurospectroscopy (NINS) Laboratory, National Brain Research Centre, Manesar, Haryana 122050, India
| | | | - Anshika Goel
- Neuroimaging and Neurospectroscopy (NINS) Laboratory, National Brain Research Centre, Manesar, Haryana 122050, India
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Li M, Gao Y, Wang D, Hu X, Jiang J, Qing Y, Yang X, Cui G, Wang P, Zhang J, Sun L, Wan C. Impaired Membrane Lipid Homeostasis in Schizophrenia. Schizophr Bull 2022; 48:1125-1135. [PMID: 35751100 PMCID: PMC9434453 DOI: 10.1093/schbul/sbac011] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
BACKGROUND AND HYPOTHESIS Multiple lines of clinical, biochemical, and genetic evidence suggest that disturbances of membrane lipids and their metabolism are probably involved in the etiology of schizophrenia (SCZ). Lipids in the membrane are essential to neural development and brain function, however, their role in SCZ remains largely unexplored. STUDY DESIGN Here we investigated the lipidome of the erythrocyte membrane of 80 patients with SCZ and 40 healthy controls using ultra-performance liquid chromatography-mass spectrometry. Based on the membrane lipids profiling, we explored the potential mechanism of membrane phospholipids metabolism. STUDY RESULTS By comparing 812 quantified lipids, we found that in SCZ, membrane phosphatidylcholines and phosphatidylethanolamines, especially the plasmalogen, were significantly decreased. In addition, the total polyunsaturated fatty acids (PUFAs) in the membrane of SCZ were significantly reduced, resulting in a decrease in membrane fluidity. The accumulation of membrane oxidized lipids and the level of peripheral lipid peroxides increased, suggesting an elevated level of oxidative stress in SCZ. Further study of membrane-phospholipid-remodeling genes showed that activation of PLA2s and LPCATs expression in patients, supporting the imbalance of unsaturated and saturated fatty acyl remodeling in phospholipids of SCZ patients. CONCLUSIONS Our results suggest that the mechanism of impaired membrane lipid homeostasis is related to the activated phospholipid remodeling caused by excessive oxidative stress in SCZ. Disordered membrane lipids found in this study may reflect the membrane dysfunction in the central nervous system and impact neurotransmitter transmission in patients with SCZ, providing new evidence for the membrane lipids hypothesis of SCZ.
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Affiliation(s)
- Minghui Li
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, China
| | - Yan Gao
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, China
| | - Dandan Wang
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaowen Hu
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, China
| | - Jie Jiang
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, China
| | - Ying Qing
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, China
| | - Xuhan Yang
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, China
| | - Gaoping Cui
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, China
| | - Pengkun Wang
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, China
| | - Juan Zhang
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, China
| | - Liya Sun
- To whom correspondence should be addressed; Bio-X Institutes, Shanghai Jiao Tong University, 1954 Huashan Road, Shanghai 200030, China, tel: +86-021-62822491, fax: +86-021-62932059, e-mail: (C.W.), (L.S.)
| | - Chunling Wan
- To whom correspondence should be addressed; Bio-X Institutes, Shanghai Jiao Tong University, 1954 Huashan Road, Shanghai 200030, China, tel: +86-021-62822491, fax: +86-021-62932059, e-mail: (C.W.), (L.S.)
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Li Z, Zhang T, Xu L, Wei Y, Cui H, Tang Y, Liu X, Qian Z, Zhang H, Liu P, Li C, Wang J. Plasma metabolic alterations and potential biomarkers in individuals at clinical high risk for psychosis. Schizophr Res 2022; 239:19-28. [PMID: 34800912 DOI: 10.1016/j.schres.2021.11.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 10/21/2021] [Accepted: 11/08/2021] [Indexed: 01/10/2023]
Abstract
BACKGROUND Early identification and treatment of clinical high-risk for psychosis (CHRP) are critical to prevent the onset of psychosis, but there is no objective biomarker for CHR-P diagnosis. METHODS Ninety medication naïve CHR-P subjects and eighty-six healthy controls (HCs) were recruited. The metabolic profiles of plasma samples were acquired using an untargeted metabolomics approach based on ultra-high-performance liquid chromatography equipped with quadrupole time-of-flight mass spectrometry. The obtained data were further mapped on the Kyoto Encyclopedia of Genes and Genomes for pathway analysis, and an ensemble learning method was applied to identify diagnostic biomarkers. Bayesian linear regression model was then used to explore predicative biomarkers of conversion to psychosis. Receiver-operating characteristic (ROC) curve analysis was performed to evaluate the diagnostic or predicative value of potential biomarkers. RESULTS A total of one hundred and four differential metabolites and forty-eight differential pathways were identified. A panel of five metabolites was found that could effectively discriminate CHR-P from HCs with area under the ROC curve of 1 in the training set (70% of the samples) and 0.997 in the testing set (30% of the samples). The biosynthesis of unsaturated fatty acids pathway perturbed most significantly in CHR-P subjects. Twenty-three CHR-P subjects converted to psychotic disorders during two-year follow-up, and increased 1-stearoyl-2-arachidonoyl-sn-glycerol in plasma was potentially associated with the higher risk of conversion to psychosis. CONCLUSIONS These findings demonstrate the alterations of plasma metabolic profiles in CHR-P population, which may deliver valuable biomarkers for early identification and outcome prediction of CHR-P.
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Affiliation(s)
- Zhixing Li
- Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Psychotic Disorders, Shanghai 200030, PR China
| | - Tianhong Zhang
- Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Psychotic Disorders, Shanghai 200030, PR China.
| | - Lihua Xu
- Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Psychotic Disorders, Shanghai 200030, PR China
| | - Yanyan Wei
- Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Psychotic Disorders, Shanghai 200030, PR China
| | - Huiru Cui
- Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Psychotic Disorders, Shanghai 200030, PR China
| | - Yingying Tang
- Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Psychotic Disorders, Shanghai 200030, PR China
| | - Xiaohua Liu
- Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Psychotic Disorders, Shanghai 200030, PR China
| | - Zhenying Qian
- Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Psychotic Disorders, Shanghai 200030, PR China
| | - Hu Zhang
- School of Pharmacy, Brain Health Research Centre, Brain Research New Zealand, University of Otago, Dunedin, New Zealand
| | - Ping Liu
- Department of Anatomy, School of Biomedical Sciences, Brain Health Research Centre, Brain Research New Zealand, University of Otago, Dunedin, New Zealand.
| | - Chunbo Li
- Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Psychotic Disorders, Shanghai 200030, PR China
| | - Jijun Wang
- Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Psychotic Disorders, Shanghai 200030, PR China; CAS Center for Excellence in Brain Science and Intelligence Technology (CEBSIT), Chinese Academy of Science, Shanghai 200031, PR China; Institute of Psychology and Behavioral Science, Shanghai Jiao Tong University, Shanghai 200030, PR China.
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Wang D, Sun X, Maziade M, Mao W, Zhang C, Wang J, Cao B. Characterising phospholipids and free fatty acids in patients with schizophrenia: A case-control study. World J Biol Psychiatry 2021; 22:161-174. [PMID: 32677491 DOI: 10.1080/15622975.2020.1769188] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
OBJECTIVES Previous studies have indicated that schizophrenia (SCZ) is linked to abnormal phospholipid and fatty acid metabolism. However, comprehensive analysis of phospholipids and free fatty acids (FFAs) for SCZ is very limited. Herein, we sought to compare serum levels of phospholipids and FFAs between patients with SCZ and healthy controls (HCs). METHODS One hundred and nineteen SCZ patients and 109 HCs were enrolled in the study. The levels of 177 phospholipids and FFAs were measured in serum samples using a targeted liquid chromatography-mass spectrometry (LC-MS)-based platform. RESULTS One hundred and ten metabolites, including 16 FFAs, 25 phosphatidylcholines, 23 lysophosphatidylcholines, 11 phosphatidylcholine plasmalogens, 7 phosphatidylethanolamines, 9 lysophosphatidylethanolamines, 6 phosphatidylethanolamine plasmalogens, and 13 sphingomyelins, were observed to be significantly altered in SCZ patients compared to HCs. These disturbances may represent underlying pathophysiology, including but not limited to altered activity of phospholipases and acyltransferases, increased oxidative stress, dysfunctional oligodendrocyte glycosynapses, and elevated lipid mobilisation and β-oxidation. CONCLUSIONS Our findings suggest that complex lipid profile abnormalities are associated with SCZ. This study may contribute to investigating the role of phospholipid and FFA alterations in the pathoetiology of SCZ.
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Affiliation(s)
- Dongfang Wang
- Institute of Blood Transfusion, Chongqing Blood Center, Chongqing, P. R. China.,Department of Laboratorial Science and Technology, School of Public Health, Peking University, Beijing, P. R. China
| | - Xiaoyu Sun
- Department of Laboratorial Science and Technology, School of Public Health, Peking University, Beijing, P. R. China
| | - Michel Maziade
- Centre de recherche CERVO, Centre Intégré Universitaire de Santé et des Services Sociaux de la Capitale-Nationale, Québec, Canada.,Département de Psychiatrie et Neurosciences, Faculté de Médecine, Université Laval, Québec, Canada
| | - Wei Mao
- Institute of Blood Transfusion, Chongqing Blood Center, Chongqing, P. R. China
| | - Chuanbo Zhang
- Psychiatric Department, Weifang Mental Health Center, Weifang, P. R. China
| | - Jingyu Wang
- Department of Laboratorial Science and Technology, School of Public Health, Peking University, Beijing, P. R. China.,Peking University Medical and Health Analysis Center, Peking University, Beijing, P. R. China.,Vaccine Research Center, School of Public Health, Peking University, Beijing, P. R. China
| | - Bing Cao
- School of Psychology and Key Laboratory of Cognition and Personality (Ministry of Education), Southwest University, Chongqing, P. R. China
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Longitudinal investigation of the relationship between omega-3 polyunsaturated fatty acids and neuropsychological functioning in recent-onset psychosis: A randomized clinical trial. Schizophr Res 2021; 228:180-187. [PMID: 33444934 PMCID: PMC8898050 DOI: 10.1016/j.schres.2020.11.050] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 10/20/2020] [Accepted: 11/29/2020] [Indexed: 11/20/2022]
Abstract
Alterations in polyunsaturated fatty acids (PUFAs), including omega-3 and omega-6, have been implicated in the pathophysiology of psychotic disorders, but little is known about their associations with neuropsychological functioning. The present study includes 46 recent-onset psychosis patients who participated in a larger (n = 50) double blind, placebo-controlled randomized clinical trial comparing 16 weeks of treatment with either risperidone + fish oil (FO) (EPA 740 mg and DHA 400 mg daily) or risperidone + placebo and completed neuropsychological assessments at the baseline timepoint. We investigated the relationship between baseline omega-3 (i.e., eicosapentaenoic acid, EPA; docosapentaenoic acid, DPA and docosahexaenoic acid, DHA) and omega-6 (i.e., arachidonic acid, AA) PUFA with baseline MATRICS Consensus Cognitive Battery (MCCB) and Brief Psychiatric Rating Scale (BPRS) scores. Twenty-five patients had neuropsychological data available at 16 weeks following participation in the clinical trial, which included 12 patients assigned to risperidone + FO and 13 patients assigned to risperidone + placebo. At baseline both higher DHA and EPA correlated significantly with better social cognition after controlling for functioning on other neuropsychological domains, total BPRS score, AA level and substance use. Also, at baseline higher AA correlated significantly with hostility/uncooperativeness after controlling for DHA + EPA + DPA, overall neuropsychological functioning and substance use. Patients treated with risperidone + FO demonstrated a significant longitudinal increase in social cognition that was significantly higher at 16 weeks compared to patients treated with risperidone + placebo. DHA also correlated significantly with social cognition at the 16-week timepoint. This study provides novel evidence for a differential role of omega-3 vs. omega-6 PUFA in neuropsychological deficits and symptoms in recent-onset psychosis and its treatment.
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Ansarey SH. Inflammation and JNK's Role in Niacin-GPR109A Diminished Flushed Effect in Microglial and Neuronal Cells With Relevance to Schizophrenia. Front Psychiatry 2021; 12:771144. [PMID: 34916973 PMCID: PMC8668869 DOI: 10.3389/fpsyt.2021.771144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Accepted: 11/02/2021] [Indexed: 12/28/2022] Open
Abstract
Schizophrenia is a neuropsychiatric illness with no single definitive aetiology, making its treatment difficult. Antipsychotics are not fully effective because they treat psychosis rather than the cognitive or negative symptoms. Antipsychotics fail to alleviate symptoms when patients enter the chronic stage of illness. Topical application of niacin showed diminished skin flush in the majority of patients with schizophrenia compared to the general population who showed flushing. The niacin skin flush test is useful for identifying patients with schizophrenia at their ultra-high-risk stage, and understanding this pathology may introduce an effective treatment. This review aims to understand the pathology behind the diminished skin flush response, while linking it back to neurons and microglia. First, it suggests that there are altered proteins in the GPR109A-COX-prostaglandin pathway, inflammatory imbalance, and kinase signalling pathway, c-Jun N-terminal kinase (JNK), which are associated with diminished flush. Second, genes from the GPR109A-COX-prostaglandin pathway were matched against the 128-loci genome wide association study (GWAS) for schizophrenia using GeneCards, suggesting that G-coupled receptor-109A (GPR109A) may have a genetic mutation, resulting in diminished flush. This review also suggests that there may be increased pro-inflammatory mediators in the GPR109A-COX-prostaglandin pathway, which contributes to the diminished flush pathology. Increased levels of pro-inflammatory markers may induce microglial-activated neuronal death. Lastly, this review explores the role of JNK on pro-inflammatory mediators, proteins in the GPR109A-COX-prostaglandin pathway, microglial activation, and neuronal death. Inhibiting JNK may reverse the changes observed in the diminished flush response, which might make it a good therapeutic target.
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Affiliation(s)
- Sabrina H Ansarey
- Department of Neuroscience and Psychology, University of Glasgow, Glasgow, United Kingdom
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10
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Qiao Y, Liu CP, Han HQ, Liu FJ, Shao Y, Xie B. No Impact of Omega-3 Fatty Acid Supplementation on Symptoms or Hostility Among Patients With Schizophrenia. Front Psychiatry 2020; 11:312. [PMID: 32372988 PMCID: PMC7186329 DOI: 10.3389/fpsyt.2020.00312] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 03/30/2020] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVE This study was aimed to explore the impact of fish oil (Omega-3 fatty acids) on hostility and psychopathology among patients with acute violent schizophrenia. METHOD Sixty seven acute hospitalized patients demonstrating violent behavior in the context of a schizophrenic illness, treated with antipsychotics, were randomly assigned to a supplement with either fish oil (N=32) or placebo (N=35) in a double-blind, placebo-controlled trial. Assessments were conducted at the baseline, week 4 and week 8. RESULTS The symptoms and hostility decreased after treatment for 4 and 8 weeks in both groups, with no group differences. CONCLUSIONS The current study did not find improvements in symptoms or hostility from the Omega-3 fatty acid supplementation in patients with schizophrenia. The implication is that Omega-3 fatty acids do not reduce psychopathology and hostility in acute patients with schizophrenia.
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Affiliation(s)
- Yi Qiao
- *Correspondence: Yi Qiao, ; Yang Shao, ; Bin Xie,
| | | | | | | | - Yang Shao
- Shanghai Mental Health Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Bin Xie
- Shanghai Mental Health Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Nadalin S, Jonovska S, Šendula Jengić V, Buretić-Tomljanović A. An association between niacin skin flush response and plasma triglyceride levels in patients with schizophrenia. Prostaglandins Leukot Essent Fatty Acids 2020; 155:102084. [PMID: 32126479 DOI: 10.1016/j.plefa.2020.102084] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 02/03/2020] [Accepted: 02/18/2020] [Indexed: 01/31/2023]
Abstract
The available data suggest that abnormalities of arachidonic acid-related signaling may be of relevance in attenuated niacin-induced flush responses and lipid and glucose metabolism disturbances, which are all common among individuals with schizophrenia. We previously demonstrated attenuated skin flush responses to niacin in patients with schizophrenia. Here we investigated whether these niacin responses might be associated with elevated plasma lipid and glucose concentrations in this patient group. We found that higher plasma triglyceride levels were associated with higher total volumetric niacin response (VNR) values and that the VNR accounted for ~14.2% of the variability in triglyceride levels. Triglyceride levels were significantly higher in patients with a positive niacin skin flush response compared to those with absent niacin skin flushing at the 5-minute interval with niacin concentrations of 0.1 and 0.01 M, and at the 10- and 15-minute intervals with a niacin concentration of 0.001 M.
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Affiliation(s)
- Sergej Nadalin
- Department of Medical Biology and Genetics, School of Medicine, University of Rijeka, Braće Branchetta 20, 51000 Rijeka, Croatia.
| | | | | | - Alena Buretić-Tomljanović
- Department of Medical Biology and Genetics, School of Medicine, University of Rijeka, Braće Branchetta 20, 51000 Rijeka, Croatia
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Marrone MC, Coccurello R. Dietary Fatty Acids and Microbiota-Brain Communication in Neuropsychiatric Diseases. Biomolecules 2019; 10:E12. [PMID: 31861745 PMCID: PMC7022659 DOI: 10.3390/biom10010012] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 12/16/2019] [Accepted: 12/17/2019] [Indexed: 12/13/2022] Open
Abstract
The gut-brain axis is a multimodal communication system along which immune, metabolic, autonomic, endocrine and enteric nervous signals can shape host physiology and determine liability, development and progression of a vast number of human diseases. Here, we broadly discussed the current knowledge about the either beneficial or deleterious impact of dietary fatty acids on microbiota-brain communication (MBC), and the multiple mechanisms by which different types of lipids can modify gut microbial ecosystem and contribute to the pathophysiology of major neuropsychiatric diseases (NPDs), such as schizophrenia (SCZ), depression and autism spectrum disorders (ASD).
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Affiliation(s)
- Maria Cristina Marrone
- European Brain Research Institute (EBRI), Fondazione Rita Levi-Montalcini, 00161 Rome, Italy;
| | - Roberto Coccurello
- National Research Council (CNR), Institute for Complex System (ISC), 00185 Rome, Italy
- IRCCS–S. Lucia Foundation (FSL), 00143 Rome, Italy
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13
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Miller TM, Poloyac SM, Anderson KB, Waddell BL, Messamore E, Yao JK. A rapid UPLC-MS/MS assay for eicosanoids in human plasma: Application to evaluate niacin responsivity. Prostaglandins Leukot Essent Fatty Acids 2018; 136:153-159. [PMID: 28111064 DOI: 10.1016/j.plefa.2017.01.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 01/15/2017] [Accepted: 01/16/2017] [Indexed: 10/20/2022]
Abstract
A rapid and sensitive method using ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) was developed to simultaneously quantify hydroxyeicosatetraenoic (HETE), dihydroxyeicosatrienoic (DiHETrE), epoxyeicosatrienoic acid (EET), and prostaglandin metabolites of arachidonic acid in human plasma. Sample preparation consisted of solid phase extraction with Oasis HLB (30mg) cartridges for all metabolites. Separation of HETEs, EETs, and DiHETrEs was achieved on an Acquity UPLC BEH C18, 1.7µm (100×2.1mm) reversed-phase column (Waters Corp, Millford, MA) with negative electrospray ionization mass spectrometric detection. A second injection of the same extracted sample allowed for separation and assessment of prostaglandin metabolites under optimized UPLC-MS/MS conditions. Additionally, the endogenous levels of these metabolites in five different matrices were determined in order to select the optimal matrix for assay development. Human serum albumin was shown to have the least amount of endogenous metabolites, a recovery efficiency of 79-100% and a matrix effect of 71 - 100%. Linear calibration curves ranging from 0.416 to 66.67ng/ml were validated. Inter-assay and intra-assay variance was less than 15% at most concentrations. This method was successfully applied to quantify metabolite levels in plasma samples of healthy control subjects receiving niacin administration to evaluate the association between niacin administration and eicosanoid plasma level response.
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Affiliation(s)
- Tricia M Miller
- Department of Pharmaceutical Sciences, University of Pittsburgh School of Pharmacy, Pittsburgh, PA 15216, United States
| | - Samuel M Poloyac
- Department of Pharmaceutical Sciences, University of Pittsburgh School of Pharmacy, Pittsburgh, PA 15216, United States
| | - Kacey B Anderson
- Department of Pharmaceutical Sciences, University of Pittsburgh School of Pharmacy, Pittsburgh, PA 15216, United States
| | - Brooke L Waddell
- Department of Pharmaceutical Sciences, University of Pittsburgh School of Pharmacy, Pittsburgh, PA 15216, United States
| | - Erik Messamore
- Department of Psychiatry, Northeast Ohio Medical University, Rootstown, OH 44272, United States
| | - Jeffrey K Yao
- Department of Pharmaceutical Sciences, University of Pittsburgh School of Pharmacy, Pittsburgh, PA 15216, United States; Medical Research Service, VA Pittsburgh Healthcare System, Pittsburgh, PA 15240, United States; Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, United States.
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14
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Alterations of eicosanoids and related mediators in patients with schizophrenia. J Psychiatr Res 2018; 102:168-178. [PMID: 29674269 DOI: 10.1016/j.jpsychires.2018.04.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 03/22/2018] [Accepted: 04/04/2018] [Indexed: 02/08/2023]
Abstract
Schizophrenia (SCZ) is a multifactorial psychiatric disorder. Currently, its molecular pathogenesis remains largely unknown, and no reliable test for diagnosis and therapy monitoring is available. Polyunsaturated fatty acids (PUFAs) and their derived eicosanoid signaling abnormalities are relevant to the pathophysiology of schizophrenia. However, comprehensive analysis of eicosanoids and related mediators for schizophrenia is very rare. In this study, we applied a targeted liquid chromatography-mass spectrometry based method to monitor 158 PUFAs, eicosanoids and related mediators from enzyme-dependent or independent pathways, in the serum samples of 109 healthy controls, and 115 schizophrenia patients at baseline and after an 8-week period of antipsychotic therapy. Twenty-three metabolites were identified to be significantly altered in SCZ patients at baseline compared to healthy controls, especially arachidonic acid (AA) derived eicosanoids. These disturbances may be related to altered immunological reactions and neurotransmitter signaling. After 8-week antipsychotic treatment, there were 22 metabolites, especially AA and linoleic acid derived eicosanoids, significantly altered in posttreatment patients. Some metabolites, such as several AA derived prostaglandins, thromboxanes, and di-hydroxy-eicosatrienoic acids were reversed toward normal levels after treatment. Based on univariate analysis and orthogonal partial least-squares discriminant analysis, anandamide, oleoylethanolamine, and AA were selected as a panel of potential biomarkers for differentiating baseline SCZ patients from controls, which showed a high sensitivity (0.907), good specificity (0.843) and excellent area under the receiver operating characteristic curve (0.940). This study provided a new perspective to understand the pathophysiological mechanism and identify potential biomarkers of SCZ.
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Thesing CS, Bot M, Milaneschi Y, Giltay EJ, Penninx BWJH. The association of omega-3 fatty acid levels with personality and cognitive reactivity. J Psychosom Res 2018; 108:93-101. [PMID: 29602331 DOI: 10.1016/j.jpsychores.2018.02.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 02/27/2018] [Accepted: 02/27/2018] [Indexed: 02/08/2023]
Abstract
OBJECTIVE Low omega (n)-3 polyunsaturated fatty acid (PUFA) levels have been found in patients with various major psychiatric disorders. This study aims to identify whether psychological vulnerabilities (personality and cognitive reactivity) underlying these psychiatric conditions are also associated with n-3 PUFA blood levels. METHODS Data was used from 2912 subjects (mean age 41.9 years, 66.4% female) from the Netherlands Study of Depression and Anxiety (NESDA). Five personality dimensions (NEO Five Factor Inventory) and cognitive reactivity measures (Leiden Index of Depression Sensitivity-Revised and Anxiety Sensitivity Index) were assessed. Plasma n-3 PUFA and docosahexaenoic acid (DHA) levels (as ratios against total fatty acids; mmol%) were assessed using a nuclear magnetic resonance platform. RESULTS Low n-3 PUFA and DHA levels were associated with high neuroticism (Standardized beta (Beta) = -0.045, 95% Confidence Interval (CI) = -0.079 to -0.010, p = 0.011; Beta = -0.058, 95%CI = -0.093 to -0.022, p = 0.001), low extraversion (Beta = 0.065, 95%CI = 0.031 to 0.099, p < 0.001; Beta = 0.074, 95%CI = 0.039 to 0.109, p < 0.001) and low conscientiousness (Beta = 0.060, 95%CI = 0.027 to 0.093, p < 0.001; Beta = 0.074, 95%CI = 0.039 to 0.108, p < 0.001). Low n-3 PUFA and DHA levels were related to high hopelessness/suicidality (Beta = -0.059, 95%CI = -0.096 to -0.023, p = 0.001; Beta = -0.078, 95%CI = -0.116 to -0.041, p < 0.001), but not with other cognitive reactivity measures. Directions of associations were generally consistent in subjects with and without a current depressive disorder. CONCLUSION Low n-3 PUFA and DHA levels are associated with personality (high neuroticism, low extraversion and low conscientiousness) and cognitive reactivity (high hopelessness/suicidality). Effect sizes were rather small, but in line with previous research on personality and chronic diseases. Future research should examine which lifestyle and/or biological pathways underlie these associations.
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Affiliation(s)
- Carisha S Thesing
- Department of Psychiatry, Amsterdam Public Health Research Institute and Amsterdam Neuroscience, VU University Medical Center, Amsterdam, The Netherlands.
| | - Mariska Bot
- Department of Psychiatry, Amsterdam Public Health Research Institute and Amsterdam Neuroscience, VU University Medical Center, Amsterdam, The Netherlands
| | - Yuri Milaneschi
- Department of Psychiatry, Amsterdam Public Health Research Institute and Amsterdam Neuroscience, VU University Medical Center, Amsterdam, The Netherlands
| | - Erik J Giltay
- Department of Psychiatry, Leiden University Medical Center, Leiden, The Netherlands
| | - Brenda W J H Penninx
- Department of Psychiatry, Amsterdam Public Health Research Institute and Amsterdam Neuroscience, VU University Medical Center, Amsterdam, The Netherlands
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Cai H, Cao T, Zhou X, Yao JK. Neurosteroids in Schizophrenia: Pathogenic and Therapeutic Implications. Front Psychiatry 2018; 9:73. [PMID: 29568275 PMCID: PMC5852066 DOI: 10.3389/fpsyt.2018.00073] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 02/21/2018] [Indexed: 12/11/2022] Open
Abstract
Neurosteroids are a group of important endogenous molecules affecting many neural functions in the brain. Increasing evidence suggests a possible role of these neurosteroids in the pathology and symptomatology of schizophrenia (SZ) and other mental disorders. The aim of this review is to summarize the current knowledge about the neural functions of neurosteroids in the brain, and to evaluate the role of the key neurosteroids as candidate modulators in the etiology and therapeutics of SZ. The present paper provides a brief introduction of neurosteroid metabolism and distribution, followed by a discussion of the mechanisms underlying neurosteroid actions in the brain. The content regarding the modulation of the GABAA receptor is elaborated, given the considerable knowledge of its interactions with other neurotransmitter and neuroprotective systems, as well as its ameliorating effects on stress that may play a role in the SZ pathophysiology. In addition, several preclinical and clinical studies suggested a therapeutic benefit of neurosteroids in SZ patients, even though the presence of altered neurosteroid pathways in the circulating blood and/or brain remains debatable. Following treatment of antipsychotic drugs in SZ, therapeutic benefits have also been linked to the regulation of neurosteroid signaling. Specifically, the neurosteroids such as pregnenolone and dehydroepiandrosterone affect a broad spectrum of behavioral functions through their unique molecular characteristics and may represent innovative therapeutic targets for SZ. Future investigations in larger cohorts with long-term follow-ups will be required to ascertain the neuropsychopharmacological role of this yet unexploited class of neurosteroid agents.
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Affiliation(s)
- HuaLin Cai
- Department of Pharmacy, The Second Xiangya Hospital of Central South University, Changsha, China
- The Institute of Clinical Pharmacy, Central South University, Changsha, China
| | - Ting Cao
- Department of Pharmacy, The Second Xiangya Hospital of Central South University, Changsha, China
- The Institute of Clinical Pharmacy, Central South University, Changsha, China
| | - Xiang Zhou
- Medical Research Service, VA Pittsburgh Healthcare System, Pittsburgh, PA, United States
- Department of Pharmaceutical Sciences, University of Pittsburgh School of Pharmacy, Pittsburgh, PA, United States
| | - Jeffrey K. Yao
- Medical Research Service, VA Pittsburgh Healthcare System, Pittsburgh, PA, United States
- Department of Pharmaceutical Sciences, University of Pittsburgh School of Pharmacy, Pittsburgh, PA, United States
- Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
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17
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Sethi S, Hayashi MA, Sussulini A, Tasic L, Brietzke E. Analytical approaches for lipidomics and its potential applications in neuropsychiatric disorders. World J Biol Psychiatry 2017; 18:506-520. [PMID: 26555297 DOI: 10.3109/15622975.2015.1117656] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVES In this review, the authors discuss an overview of lipidomics followed by in-depth discussion of its application to the study of human diseases, including extraction methods of lipids, analytical techniques and clinical research in neuropsychiatric disorders. METHODS Lipidomics is a lipid-targeted metabolomics approach aiming at the comprehensive analysis of lipids in biological systems. Recent technological advancements in mass spectrometry and chromatography have greatly enhanced the development and applications of metabolic profiling of diverse lipids in complex biological samples. RESULTS An effective evaluation of the clinical course of diseases requires the application of very precise diagnostic and assessment approaches as early as possible. In order to achieve this, "omics" strategies offer new opportunities for biomarker identification and/or discovery in complex diseases and may provide pathological pathways understanding for diseases beyond traditional methodologies. CONCLUSIONS This review highlights the importance of lipidomics for the future perspectives as a tool for biomarker identification and discovery and its clinical application.
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Affiliation(s)
- Sumit Sethi
- a Interdisciplinary Laboratory for Clinical Neuroscience (LiNC), Department of Psychiatry , Universidade Federal De São Paulo - UNIFESP , São Paulo , Brazil
| | - Mirian A Hayashi
- a Interdisciplinary Laboratory for Clinical Neuroscience (LiNC), Department of Psychiatry , Universidade Federal De São Paulo - UNIFESP , São Paulo , Brazil
| | - Alessandra Sussulini
- b Department of Analytical Chemistry , Institute of Chemistry, Universidade Estadual De Campinas - UNICAMP , Campinas , SP , Brazil
| | - Ljubica Tasic
- c Department of Organic Chemistry , Institute of Chemistry, Universidade Estadual De Campinas - UNICAMP , Campinas , SP , Brazil
| | - Elisa Brietzke
- a Interdisciplinary Laboratory for Clinical Neuroscience (LiNC), Department of Psychiatry , Universidade Federal De São Paulo - UNIFESP , São Paulo , Brazil
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18
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Potential drug targets and treatment of schizophrenia. Inflammopharmacology 2017; 25:277-292. [DOI: 10.1007/s10787-017-0340-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 03/17/2017] [Indexed: 12/25/2022]
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19
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Phospholipid-protein balance in affective disorders: Analysis of human blood serum using Raman and FTIR spectroscopy. A pilot study. J Pharm Biomed Anal 2016; 131:287-296. [DOI: 10.1016/j.jpba.2016.08.037] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 08/26/2016] [Accepted: 08/29/2016] [Indexed: 11/23/2022]
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20
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Yao JK, Dougherty GG, Gautier CH, Haas GL, Condray R, Kasckow JW, Kisslinger BL, Gurklis JA, Messamore E. Prevalence and Specificity of the Abnormal Niacin Response: A Potential Endophenotype Marker in Schizophrenia. Schizophr Bull 2016; 42:369-76. [PMID: 26371338 PMCID: PMC4753599 DOI: 10.1093/schbul/sbv130] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The skin flush response to niacin is abnormally blunted among a subset of patients with schizophrenia (SZ), preferentially associates with SZ compared to other mental illnesses, occurs frequently in nonpsychotic members of SZ-affected families, appears heritable, and shows evidence of genetic association. The niacin response abnormality (NRA) may prove to be a useful SZ endophenotype. Using a laser Doppler flowmeter, we undertook this study to estimate the prevalence of NRA in SZ (n = 70), bipolar disorder (BP, n = 59), and healthy control (HC, n = 87) groups, and to estimate its specificity for the illness. From the dose-response curves, we calculated the concentration of methylnicotinate required to elicit a half-maximal blood flow (MBF) response (EC50 value) and MBF value for each subject. The median log10EC50 of the SZ was above the third quartile of log10EC50 of either the HC or BP groups, whereas the MBF was significantly lower in the SZ than in the HC or BP groups. With a definition of NRA of having both EC50 above the ninetieth percentile of the control samples and MBF response below the sixtieth percentile for the control range, the NRA predicted SZ with 31% sensitivity and 97% specificity. Moreover, the NRA was not influenced by age, gender, race, and cigarette smoking. In summary, the NRA may define a SZ subtype with a clinically significant phospholipid signaling defect. Understanding its molecular origins may shed light on the pathophysiology of SZ and suggest new tools for its early diagnosis and treatment.
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Affiliation(s)
- Jeffrey K. Yao
- *To whom correspondence should be addressed; VA Pittsburgh Healthcare System, B1-2E-140, University Drive C, Pittsburgh, PA 15240, US; tel: 412-360-6781, fax: 412-360-1159, e-mail:
| | - George G. Dougherty
- Medical Research Service, VA Pittsburgh Healthcare System, Pittsburgh, PA;,Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Clara H. Gautier
- Medical Research Service, VA Pittsburgh Healthcare System, Pittsburgh, PA
| | - Gretchen L. Haas
- Medical Research Service, VA Pittsburgh Healthcare System, Pittsburgh, PA;,Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Ruth Condray
- Medical Research Service, VA Pittsburgh Healthcare System, Pittsburgh, PA
| | - John W. Kasckow
- Medical Research Service, VA Pittsburgh Healthcare System, Pittsburgh, PA;,Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | | | - John A. Gurklis
- Medical Research Service, VA Pittsburgh Healthcare System, Pittsburgh, PA
| | - Erik Messamore
- Department of Psychiatry, University of Cincinnati and Lindner Center for Hope, Cincinnati, OH
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21
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Medema S, Mocking RJT, Koeter MWJ, Vaz FM, Meijer C, de Haan L, van Beveren NJM, Kahn R, de Haan L, van Os J, Wiersma D, Bruggeman R, Cahn W, Meijer C, Myin-Germeys I. Levels of Red Blood Cell Fatty Acids in Patients With Psychosis, Their Unaffected Siblings, and Healthy Controls. Schizophr Bull 2016; 42:358-68. [PMID: 26385764 PMCID: PMC4753602 DOI: 10.1093/schbul/sbv133] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Two recent meta-analyses showed decreased red blood cell (RBC) polyunsaturated fatty acids (FA) in schizophrenia and related disorders. However, both these meta-analyses report considerable heterogeneity, probably related to differences in patient samples between studies. Here, we investigated whether variations in RBC FA are associated with psychosis, and thus may be an intermediate phenotype of the disorder. METHODS For the present study, a total of 215 patients (87% outpatients), 187 siblings, and 98 controls were investigated for multiple FA analyses. Based on previous studies, we investigated docosahexaenoic acid (DHA), docosapentaenoic acid (DPA), arachidonic acid (AA), linoleic acid (LA), nervonic acid (NA), and eicasopentaenoic acid (EPA). On an exploratory basis, a large number of additional FA were investigated. Multilevel mixed models were used to compare the FA between the 3 groups. RESULTS Compared to controls, both patients and siblings showed significantly increased DHA, DPA, AA, and NA. LA was significantly higher in siblings compared to controls. EPA was not significantly different between the 3 groups. Also the exploratory FA were increased in patients and siblings. CONCLUSIONS We found increased RBC FA DHA, DPA, AA, and NA in patients and siblings compared to controls. The direction of change is similar in both patients and siblings, which may suggest a shared environment and/or an intermediate phenotype. Differences between patient samples reflecting stage of disorder, dietary patterns, medication use, and drug abuse are possible modifiers of FA, contributing to the heterogeneity in findings concerning FA in schizophrenia patients.
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Affiliation(s)
- Suzanne Medema
- Department of Psychiatry, Antes Center for Mental Health Care, Rotterdam, The Netherlands; Department of Psychiatry, Academic Medical Center, Amsterdam, The Netherlands
| | - Roel J T Mocking
- Department of Psychiatry, Academic Medical Center, Amsterdam, The Netherlands
| | - Maarten W J Koeter
- Department of Psychiatry, Academic Medical Center, Amsterdam, The Netherlands
| | - Frédéric M Vaz
- Laboratory of Genetic and Metabolic Diseases, Academic Medical Center, Amsterdam, The Netherlands
| | - Carin Meijer
- Department of Psychiatry, Academic Medical Center, Amsterdam, The Netherlands
| | - Lieuwe de Haan
- Department of Psychiatry, Academic Medical Center, Amsterdam, The Netherlands
| | - Nico J M van Beveren
- Department of Psychiatry, Antes Center for Mental Health Care, Rotterdam, The Netherlands; Department of Psychiatry, Erasmus MC, Rotterdam, The Netherlands; Department of Neuroscience, Erasmus MC, Rotterdam, The Netherlands;
| | - René Kahn
- Department of Psychiatry, University Medical Centre Utrecht, Rudolf Magnus Institute of Neuroscience, The Netherlands
| | - Lieuwe de Haan
- Department of Psychiatry, Academic Medical Center, Amsterdam, The Netherlands
| | - Jim van Os
- Department of Psychiatry and Psychology, Maastricht University Medical Center, The Netherlands
| | - Durk Wiersma
- Department of Psychiatry, University Medical Center Groningen, The Netherlands
| | - Richard Bruggeman
- Department of Psychiatry, University Medical Center Groningen, The Netherlands
| | - Wiepke Cahn
- Department of Psychiatry, University Medical Centre Utrecht, Rudolf Magnus Institute of Neuroscience, The Netherlands
| | - Carin Meijer
- Department of Psychiatry, Antes Center for Mental Health Care, Rotterdam, The Netherlands
| | - Inez Myin-Germeys
- Department of Psychiatry and Psychology, Maastricht University Medical Center, The Netherlands
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22
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Pu S, Nakagome K, Yamada T, Matsumura H, Yokoyama K, Kaneko K, Kurosawa Y. Association between Fish Consumption and Prefrontal Function during a Cognitive Task in Male Japanese Workers: A Multi-Channel Near-Infrared Spectroscopy Study. PLoS One 2015; 10:e0123972. [PMID: 25919586 PMCID: PMC4412671 DOI: 10.1371/journal.pone.0123972] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2014] [Accepted: 02/24/2015] [Indexed: 11/18/2022] Open
Abstract
The purpose of this study was to examine the relationship between fish consumption and prefrontal function during a cognitive task in male Japanese workers. The study included 208 male workers who underwent medical health examinations 3 months after a change in their work assignment. We measured the hemoglobin concentration changes in the prefrontal region during working memory tasks using 52-channel near-infrared spectroscopy. The frequency of fish consumption was calculated on the basis of the subjects' self-reported customary intake frequency over the previous 3 months. A significant positive relationship was observed between fish consumption and left dorsolateral prefrontal function during a working memory task. To our knowledge, this is the first study to report an association between fish consumption and functional cortical activity with an ample sample size, suggesting that fish consumption modulates functional activity in the left dorsolateral prefrontal cortex.
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Affiliation(s)
- Shenghong Pu
- Division of Neuropsychiatry, Department of Brain and Neuroscience, Tottori University Faculty of Medicine, Yonago, Tottori, Japan
| | - Kazuyuki Nakagome
- Department of Psychiatry, National Center of Neurology and Psychiatry Hospital, Tokyo, Japan
| | - Takeshi Yamada
- Division of Neuropsychiatry, Department of Brain and Neuroscience, Tottori University Faculty of Medicine, Yonago, Tottori, Japan
| | - Hiroshi Matsumura
- Division of Neuropsychiatry, Department of Brain and Neuroscience, Tottori University Faculty of Medicine, Yonago, Tottori, Japan
| | - Katsutoshi Yokoyama
- Division of Neuropsychiatry, Department of Brain and Neuroscience, Tottori University Faculty of Medicine, Yonago, Tottori, Japan
| | - Koichi Kaneko
- Division of Neuropsychiatry, Department of Brain and Neuroscience, Tottori University Faculty of Medicine, Yonago, Tottori, Japan
| | - Yoichi Kurosawa
- Division of Health Administration and Promotion, Department of Social Medicine, Faculty of Medicine, Tottori University, Yonago, Tottori, Japan
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23
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Dietrich-Muszalska A. Oxidative Stress in Schizophrenia. OXIDATIVE STRESS IN APPLIED BASIC RESEARCH AND CLINICAL PRACTICE 2015. [DOI: 10.1007/978-1-4939-0440-2_2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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24
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Zugno AI, Chipindo H, Canever L, Budni J, Alves de Castro A, Bittencourt de Oliveira M, Heylmann AS, Gomes Wessler P, da Rosa Silveira F, Damázio LS, Mastella GA, Kist LW, Bogo MR, Quevedo J, Gama CS. Omega-3 fatty acids prevent the ketamine-induced increase in acetylcholinesterase activity in an animal model of schizophrenia. Life Sci 2014; 121:65-9. [PMID: 25498892 DOI: 10.1016/j.lfs.2014.11.025] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Revised: 11/14/2014] [Accepted: 11/22/2014] [Indexed: 11/30/2022]
Abstract
AIMS Schizophrenia is a debilitating neurodevelopmental disorder that is associated with dysfunction in the cholinergic system. Early prevention is a target of treatment to improve long-term outcomes. Therefore, we evaluated the preventive effects of omega-3 fatty acids on AChE activity in the prefrontal cortex, hippocampus and striatum in an animal model of schizophrenia. MAIN METHODS Young Wistar rats (30 days old) were initially treated with omega-3 fatty acids or vehicle alone. Animals received ketamine to induce an animal model of schizophrenia or saline plus omega-3 fatty acids or vehicle alone for 7 consecutive days beginning on day 15. A total of 22 days elapsed between the treatment and intervention. Animals were sacrificed, and brain structures were dissected to evaluate AChE activity and gene expression. KEY FINDINGS Our results demonstrate that ketamine increased AChE activity in these three structures, and omega-3 fatty acids plus ketamine showed lower values for the studied parameters, which indicate a partial preventive mechanism of omega-3 fatty acid supplementation. We observed no effect on AChE expression. Together, these results indicate that omega-3 fatty acid supplementation effectively reduced AChE activity in an animal model of schizophrenia in all studied structures. In conclusion, the present study provides evidence that ketamine and omega-3 fatty acids affect the cholinergic system, and this effect may be associated with the physiopathology of schizophrenia. Further studies are required to investigate the mechanisms that are associated with this effect.
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Affiliation(s)
- Alexandra I Zugno
- Laboratório de Neurociências, Programa de Pós-GraduaçãoemCiências da Saúde, UnidadeAcadêmica de Ciências da Saúde, Universidade do ExtremoSulCatarinense, Criciúma, SC, Brazil; Instituto Nacional de Ciência e TecnologiaTranslacionalemMedicina (INCT-TM), Porto Alegre, RS, Brazil.
| | - Helder Chipindo
- Laboratório de Neurociências, Programa de Pós-GraduaçãoemCiências da Saúde, UnidadeAcadêmica de Ciências da Saúde, Universidade do ExtremoSulCatarinense, Criciúma, SC, Brazil
| | - Lara Canever
- Laboratório de Neurociências, Programa de Pós-GraduaçãoemCiências da Saúde, UnidadeAcadêmica de Ciências da Saúde, Universidade do ExtremoSulCatarinense, Criciúma, SC, Brazil
| | - Josiane Budni
- Laboratório de Neurociências, Programa de Pós-GraduaçãoemCiências da Saúde, UnidadeAcadêmica de Ciências da Saúde, Universidade do ExtremoSulCatarinense, Criciúma, SC, Brazil
| | - Adalberto Alves de Castro
- Laboratório de Neurociências, Programa de Pós-GraduaçãoemCiências da Saúde, UnidadeAcadêmica de Ciências da Saúde, Universidade do ExtremoSulCatarinense, Criciúma, SC, Brazil
| | - Mariana Bittencourt de Oliveira
- Laboratório de Neurociências, Programa de Pós-GraduaçãoemCiências da Saúde, UnidadeAcadêmica de Ciências da Saúde, Universidade do ExtremoSulCatarinense, Criciúma, SC, Brazil
| | - Alexandra Stephanie Heylmann
- Laboratório de Neurociências, Programa de Pós-GraduaçãoemCiências da Saúde, UnidadeAcadêmica de Ciências da Saúde, Universidade do ExtremoSulCatarinense, Criciúma, SC, Brazil
| | - Patrícia Gomes Wessler
- Laboratório de Neurociências, Programa de Pós-GraduaçãoemCiências da Saúde, UnidadeAcadêmica de Ciências da Saúde, Universidade do ExtremoSulCatarinense, Criciúma, SC, Brazil
| | - Flávia da Rosa Silveira
- Laboratório de Neurociências, Programa de Pós-GraduaçãoemCiências da Saúde, UnidadeAcadêmica de Ciências da Saúde, Universidade do ExtremoSulCatarinense, Criciúma, SC, Brazil
| | - Louyse S Damázio
- Laboratório de Neurociências, Programa de Pós-GraduaçãoemCiências da Saúde, UnidadeAcadêmica de Ciências da Saúde, Universidade do ExtremoSulCatarinense, Criciúma, SC, Brazil
| | - Gustavo Antunes Mastella
- Laboratório de Neurociências, Programa de Pós-GraduaçãoemCiências da Saúde, UnidadeAcadêmica de Ciências da Saúde, Universidade do ExtremoSulCatarinense, Criciúma, SC, Brazil
| | - Luiza W Kist
- Laboratório de Psiquiatria Molecular, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Instituto Nacional de Ciência e TecnologiaTranslacionalemMedicina (INCT-TM), Porto Alegre, RS, Brazil
| | - Maurício R Bogo
- Laboratório de Psiquiatria Molecular, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Instituto Nacional de Ciência e TecnologiaTranslacionalemMedicina (INCT-TM), Porto Alegre, RS, Brazil
| | - João Quevedo
- Laboratório de Neurociências, Programa de Pós-GraduaçãoemCiências da Saúde, UnidadeAcadêmica de Ciências da Saúde, Universidade do ExtremoSulCatarinense, Criciúma, SC, Brazil; Instituto Nacional de Ciência e TecnologiaTranslacionalemMedicina (INCT-TM), Porto Alegre, RS, Brazil; Center for Experimental Models in Psychiatry, Department of Psychiatry and Behavioral Sciences, The University of Texas Medical School at Houston, Houston, TX, USA
| | - Clarissa S Gama
- Laboratório de Neurociências, Programa de Pós-GraduaçãoemCiências da Saúde, UnidadeAcadêmica de Ciências da Saúde, Universidade do ExtremoSulCatarinense, Criciúma, SC, Brazil; Instituto Nacional de Ciência e TecnologiaTranslacionalemMedicina (INCT-TM), Porto Alegre, RS, Brazil
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Rolim AEH, Henrique-Araújo R, Ferraz EG, de Araújo Alves Dultra FK, Fernandez LG. Lipidomics in the study of lipid metabolism: Current perspectives in the omic sciences. Gene 2014; 554:131-9. [PMID: 25445283 DOI: 10.1016/j.gene.2014.10.039] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Revised: 10/14/2014] [Accepted: 10/23/2014] [Indexed: 11/24/2022]
Abstract
The advances in systems biology and in the development of new technological tools in analysis, as well as in the omic sciences, among which, metabolomics, and more specifically, lipidomics, have made it possible to investigate the structural and functional complexity of lipids in biological systems. Liquid chromatography and mass spectrometry are the analytical approaches most used in lipid research. Biomedical research, with the development of specific markers for lipids, together with new software development, have both enabled the early diagnosis of several illnesses, besides the evaluation of drug activity and treatment efficacy.
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Affiliation(s)
- Ana Emília Holanda Rolim
- Post-graduation Program in Interactive Processes of Organs and Systems, Institute of Health Sciences, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Ricardo Henrique-Araújo
- Post-graduation Program in Interactive Processes of Organs and Systems, Institute of Health Sciences, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Eduardo Gomes Ferraz
- Post-graduation Program in Interactive Processes of Organs and Systems, Institute of Health Sciences, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Fátima Karoline de Araújo Alves Dultra
- Post-graduation Program in Interactive Processes of Organs and Systems, Institute of Health Sciences, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Luzimar Gonzaga Fernandez
- Institute of Health Sciences-ICS, Federal University of Bahia-UFBA, Department of Biofunção, Laboratory of Biochemistry, Biotechnology and Bioproducts-LBBB, Salvador, Bahia, Brazil.
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Dassati S, Waldner A, Schweigreiter R. Apolipoprotein D takes center stage in the stress response of the aging and degenerative brain. Neurobiol Aging 2014; 35:1632-42. [PMID: 24612673 PMCID: PMC3988949 DOI: 10.1016/j.neurobiolaging.2014.01.148] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 01/17/2014] [Accepted: 01/30/2014] [Indexed: 02/08/2023]
Abstract
Apolipoprotein D (ApoD) is an ancient member of the lipocalin family with a high degree of sequence conservation from insects to mammals. It is not structurally related to other major apolipoproteins and has been known as a small, soluble carrier protein of lipophilic molecules that is mostly expressed in neurons and glial cells within the central and peripheral nervous system. Recent data indicate that ApoD not only supplies cells with lipophilic molecules, but also controls the fate of these ligands by modulating their stability and oxidation status. Of particular interest is the binding of ApoD to arachidonic acid and its derivatives, which play a central role in healthy brain function. ApoD has been shown to act as a catalyst in the reduction of peroxidized eicosanoids and to attenuate lipid peroxidation in the brain. Manipulating its expression level in fruit flies and mice has demonstrated that ApoD has a favorable effect on both stress resistance and life span. The APOD gene is the gene that is upregulated the most in the aging human brain. Furthermore, ApoD levels in the nervous system are elevated in a large number of neurologic disorders including Alzheimer's disease, schizophrenia, and stroke. There is increasing evidence for a prominent neuroprotective role of ApoD because of its antioxidant and anti-inflammatory activity. ApoD emerges as an evolutionarily conserved anti-stress protein that is induced by oxidative stress and inflammation and may prove to be an effective therapeutic agent against a variety of neuropathologies, and even against aging.
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Affiliation(s)
- Sarah Dassati
- Department of Neurological Rehabilitation, Private Hospital "Villa Melitta", Bolzano, Italy
| | - Andreas Waldner
- Department of Neurological Rehabilitation, Private Hospital "Villa Melitta", Bolzano, Italy
| | - Rüdiger Schweigreiter
- Division of Neurobiochemistry, Biocenter, Innsbruck Medical University, Innsbruck, Austria.
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Feigenson KA, Kusnecov AW, Silverstein SM. Inflammation and the two-hit hypothesis of schizophrenia. Neurosci Biobehav Rev 2014; 38:72-93. [PMID: 24247023 PMCID: PMC3896922 DOI: 10.1016/j.neubiorev.2013.11.006] [Citation(s) in RCA: 185] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 10/26/2013] [Accepted: 11/07/2013] [Indexed: 12/12/2022]
Abstract
The high societal and individual cost of schizophrenia necessitates finding better, more effective treatment, diagnosis, and prevention strategies. One of the obstacles in this endeavor is the diverse set of etiologies that comprises schizophrenia. A substantial body of evidence has grown over the last few decades to suggest that schizophrenia is a heterogeneous syndrome with overlapping symptoms and etiologies. At the same time, an increasing number of clinical, epidemiological, and experimental studies have shown links between schizophrenia and inflammatory conditions. In this review, we analyze the literature on inflammation and schizophrenia, with a particular focus on comorbidity, biomarkers, and environmental insults. We then identify several mechanisms by which inflammation could influence the development of schizophrenia via the two-hit hypothesis. Lastly, we note the relevance of these findings to clinical applications in the diagnosis, prevention, and treatment of schizophrenia.
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Affiliation(s)
- Keith A Feigenson
- Robert Wood Johnson Medical School at Rutgers, The State University of New Jersey, 675 Hoes Lane, Piscataway, NJ 08854, USA.
| | - Alex W Kusnecov
- Department of Psychology, Behavioral and Systems Neuroscience Program and Joint Graduate Program in Toxicology, Rutgers University, 52 Frelinghuysen Road, Piscataway, NJ 08854-8020, USA.
| | - Steven M Silverstein
- Robert Wood Johnson Medical School at Rutgers, The State University of New Jersey, 675 Hoes Lane, Piscataway, NJ 08854, USA; University Behavioral Health Care at Rutgers, The State University of New Jersey, 671 Hoes Lane, Piscataway, NJ 08855, USA.
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Zhang XY, Yao JK. Oxidative stress and therapeutic implications in psychiatric disorders. Prog Neuropsychopharmacol Biol Psychiatry 2013; 46:197-9. [PMID: 23523744 DOI: 10.1016/j.pnpbp.2013.03.003] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Accepted: 03/15/2013] [Indexed: 11/17/2022]
Abstract
Increasing evidence indicates that disturbances of antioxidant defense system and presence of oxidative stress can play a part in a wide range of neuropsychiatric disorders, including schizophrenia, bipolar disorder, and major depression, as well as antipsychotic-induced tardive dyskinesia (TD). Moreover, researchers have embarked on using antioxidant treatment as adjunct therapy for psychiatry disorders. Evidence from clinical, pre-clinical and epidemiological studies suggests that a benefit of using antioxidant compounds should be considered as an adjunctive therapy in these patients. These are some of the main perspectives that are reviewed by four articles in this special section. Overall, there has been growing recognition of the importance of oxidative stress in the pathophysiology of psychiatric disorders and the development of TD. The collection of articles in this special section will contribute to providing more efficacious treatments arising from a better appreciation of the roles of oxidative stress in these psychiatric disorders.
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Affiliation(s)
- Xiang Yang Zhang
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, USA; Michael E. DeBakey VA Medical Center, Houston, TX, USA; Psychiatry Research Center, Beijing Hui Long Guan Hospital, Peking University, Beijing, China.
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Ramos-Loyo J, Medina-Hernández V, Estarrón-Espinosa M, Canales-Aguirre A, Gómez-Pinedo U, Cerdán-Sánchez LF. Sex differences in lipid peroxidation and fatty acid levels in recent onset schizophrenia. Prog Neuropsychopharmacol Biol Psychiatry 2013; 44:154-61. [PMID: 23421976 DOI: 10.1016/j.pnpbp.2013.02.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Revised: 01/17/2013] [Accepted: 02/08/2013] [Indexed: 01/14/2023]
Abstract
Sex differences in the symptomatology and course of illness have been reported among schizophrenic patients. Hence, the principal objective of the present study was to investigate sex differences in the concentrations of the lipid peroxidation metabolites MDA and 4-HNE, and in the membrane phospholipid levels of ARA, EPA and DHA in patients with schizophrenia. A total of 46 paranoid schizophrenics (25 women) with short-term evolution who were in an acute psychotic stage and 40 healthy controls (23 women) participated in the study. Psychopathology was evaluated by BPRS and PANSS. Lipid peroxidation sub-products (MDA, 4-HNE) and fatty acid levels (ARA, EPA, DHA) were determined in erythrocyte membranes. The men in both groups showed higher lipid peroxidation levels and those values were higher in schizophrenic patients than controls, with only EPA fatty acid concentrations found to be lower in the former than the latter. These results suggest that men may suffer greater oxidative neuronal damage than women, and that this could worsen the course of illness and result in greater disease severity.
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Yao JK, Dougherty GG, Reddy RD, Matson WR, Kaddurah-Daouk R, Keshavan MS. Associations between purine metabolites and monoamine neurotransmitters in first-episode psychosis. Front Cell Neurosci 2013; 7:90. [PMID: 23781173 PMCID: PMC3678099 DOI: 10.3389/fncel.2013.00090] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Accepted: 05/22/2013] [Indexed: 12/31/2022] Open
Abstract
Schizophrenia (SZ) is a biochemically complex disorder characterized by widespread defects in multiple metabolic pathways whose dynamic interactions, until recently, have been difficult to examine. Rather, evidence for these alterations has been collected piecemeal, limiting the potential to inform our understanding of the interactions amongst relevant biochemical pathways. We herein review perturbations in purine and neurotransmitter metabolism observed in early SZ using a metabolomic approach. Purine catabolism is an underappreciated, but important component of the homeostatic response of mitochondria to oxidant stress. We have observed a homeostatic imbalance of purine catabolism in first-episode neuroleptic-naïve patients with SZ (FENNS). Precursor and product relationships within purine pathways are tightly correlated. Although some of these correlations persist across disease or medication status, others appear to be lost among FENNS suggesting that steady formation of the antioxidant uric acid (UA) via purine catabolism is altered early in the course of illness. As is the case for within-pathway correlations, there are also significant cross-pathway correlations between respective purine and tryptophan (TRP) pathway metabolites. By contrast, purine metabolites show significant cross-pathway correlation only with tyrosine, and not with its metabolites. Furthermore, several purine metabolites (UA, guanosine, or xanthine) are each significantly correlated with 5-hydroxyindoleacetic acid (5-HIAA) in healthy controls, but not in FENNS at baseline or 4-week after antipsychotic treatment. Taken together, the above findings suggest that purine catabolism strongly associates with the TRP pathways leading to serotonin (5-hydroxytryptamine, 5-HT) and kynurenine metabolites. The lack of a significant correlation between purine metabolites and 5-HIAA, suggests alterations in key 5-HT pathways that may both be modified by and contribute to oxidative stress via purine catabolism in FENNS.
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Affiliation(s)
- Jeffrey K Yao
- Medical Research Service, VA Pittsburgh Healthcare System Pittsburgh, PA, USA ; Department of Psychiatry, University of Pittsburgh School of Medicine Pittsburgh, PA, USA ; Department of Pharmaceutical Sciences, University of Pittsburgh School of Pharmacy Pittsburgh, PA, USA
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Gama CS, Canever L, Panizzutti B, Gubert C, Stertz L, Massuda R, Pedrini M, de Lucena DF, Luca RD, Fraga DB, Heylmann AS, Deroza PF, Zugno AI. Effects of omega-3 dietary supplement in prevention of positive, negative and cognitive symptoms: a study in adolescent rats with ketamine-induced model of schizophrenia. Schizophr Res 2012; 141:162-7. [PMID: 22954755 DOI: 10.1016/j.schres.2012.08.002] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Revised: 07/31/2012] [Accepted: 08/02/2012] [Indexed: 01/26/2023]
Abstract
Omega-3 has shown efficacy to prevent schizophrenia conversion in ultra-high risk population. We evaluated the efficacy of omega-3 in preventing ketamine-induced effects in an animal model of schizophrenia and its effect on brain-derived neurotrophic factor (BDNF). Omega-3 or vehicle was administered in Wistar male rats, both groups at the 30th day of life for 15days. Each group was split in two to receive along the following 7days ketamine or saline. Locomotor and exploratory activities, memory test and social interaction between pairs were evaluated at the 52nd day of life. Prefrontal-cortex, hippocampus and striatum tissues were extracted right after behavioral tasks for mRNA BDNF expression analysis. Bloods for serum BDNF were withdrawn 24h after the end of behavioral tasks. Locomotive was increased in ketamine-treated group compared to control, omega-3 and ketamine plus omega-3 groups. Ketamine group had fewer contacts and interaction compared to other groups. Working memory and short and long-term memories were significantly impaired in ketamine group compared to others. Serum BDNF levels were significantly higher in ketamine plus omega-3 group. There was no difference between groups in prefrontal-cortex, hippocampus and striatum for mRNA BDNF expression. Administration of omega-3 in adolescent rats prevents positive, negative and cognitive symptoms in a ketamine animal model of schizophrenia. Whether these findings are consequence of BDNF increase it is unclear. However, this study gives compelling evidence for larger clinical trials to confirm the use of omega-3 to prevent schizophrenia and for studies to reinforce the beneficial role of omega-3 in brain protection.
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Affiliation(s)
- Clarissa S Gama
- Laboratory of Molecular Psychiatry, INCT for Translational Medicine, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
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Schindler EAD, Harvey JA, Aloyo VJ. Phospholipase C mediates (±)-1-(2,5-dimethoxy-4-iodophenyl)-2-aminopropane (DOI)-, but not lysergic acid diethylamide (LSD)-elicited head bobs in rabbit medial prefrontal cortex. Brain Res 2012; 1491:98-108. [PMID: 23123701 DOI: 10.1016/j.brainres.2012.10.057] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Revised: 10/20/2012] [Accepted: 10/27/2012] [Indexed: 11/24/2022]
Abstract
The phenethylamine and indoleamine classes of hallucinogens demonstrate distinct pharmacological properties, although they share a serotonin(2A) (5-HT(2A)) receptor mechanism of action (MOA). The 5-HT(2A) receptor signals through phosphatidylinositol (PI) hydrolysis, which is initiated upon activation of phospholipase C (PLC). The role of PI hydrolysis in the effects of hallucinogens remains unclear. In order to better understand the role of PI hydrolysis in the MOA of hallucinogens, the PLC inhibitor, 1-[6-((17β-3-methoxyestra-1,3,5(10)-trien-17-yl)amino)hexyl]-1H-pyrrole-2,5-dione (U73122), was used to study the effects of two hallucinogens, the phenethylamine, (±)-1-(2,5-dimethoxy-4-iodophenyl)-2-aminopropane (DOI), and the indoleamine, lysergic acid diethylamide (LSD). PI hydrolysis was quantified through release of [3H]inositol-4-phosphate from living rabbit frontocortical tissue prisms. Head bobs were counted after hallucinogens were infused into the medial prefrontal cortex (mPFC) of rabbits. Both DOI and LSD stimulated PI hydrolysis in frontocortical tissue through activation of PLC. DOI-stimulated PI hydrolysis was blocked by 5-HT(2A/2C) receptor antagonist, ketanserin, whereas the LSD signal was blocked by 5-HT(2B/2C) receptor antagonist, SB206553. When infused into the mPFC, both DOI- and LSD-elicited head bobs. Pretreatment with U73122 blocked DOI-, but not LSD-elicited head bobs. The two hallucinogens investigated were distinct in their activation of the PI hydrolysis signaling pathway. The serotonergic receptors involved with DOI and LSD signals in frontocortical tissue were different. Furthermore, PLC activation in mPFC was necessary for DOI-elicited head bobs, whereas LSD-elicited head bobs were independent of this pathway. These novel findings urge closer investigation into the intracellular mechanism of action of these unique compounds.
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Affiliation(s)
- Emmanuelle A D Schindler
- Drexel University College of Medicine, Department of Pharmacology & Physiology, 245 N. 15th Street, Philadelphia, PA 19102, United States.
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Tang B, Capitao C, Dean B, Thomas EA. Differential age- and disease-related effects on the expression of genes related to the arachidonic acid signaling pathway in schizophrenia. Psychiatry Res 2012; 196:201-6. [PMID: 22397921 PMCID: PMC3361581 DOI: 10.1016/j.psychres.2011.09.026] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2011] [Revised: 09/22/2011] [Accepted: 09/25/2011] [Indexed: 10/28/2022]
Abstract
We have previously identified differential effects of age on global brain gene expression profiles in subjects with schizophrenia compared to normal controls. Here, we have focused on age-related effects of genes associated with the arachidonic acid-related inflammation pathway. Linear correlation analysis of published microarray expression data reveal strong age- and cell-type- specific-effects on the expression of genes related to the arachidonic acid signaling pathway, which differed in control subjects compared to those with schizophrenia. Using real-time qPCR analysis, we validated age and disease effects of arachidonic acid-related genes in a large cohort of subjects with schizophrenia and matched controls (n=76 subjects in total). We found that levels of prostaglandin-endoperoxide synthase 1 (PTGS1; aka COX-1) and prostaglandin-endoperoxide receptor 3 (PTGER3) mRNA are increased, and levels of prostaglandin-endoperoxide synthase 2 (PTGS2; aka COX-2) mRNA are decreased, in older subjects with schizophrenia (> 40years of age) compared to matched normal controls or younger subjects with schizophrenia (< 40years of age). These findings contribute to the accumulating evidence suggesting that inflammatory processes in the CNS contribute to pathophysiology of schizophrenia and further suggest that age may be an important factor in the potential use of anti-inflammatory therapies.
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Affiliation(s)
- Bin Tang
- Department of Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Cristina Capitao
- Department of Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Brian Dean
- The Rebecca L. Cooper Research Laboratories, The Mental Health Research Institute, Locked Bag 11, Parkville, Victoria 3052, Australia
| | - Elizabeth A. Thomas
- Department of Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
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Xuan J, Pan G, Qiu Y, Yang L, Su M, Liu Y, Chen J, Feng G, Fang Y, Jia W, Xing Q, He L. Metabolomic profiling to identify potential serum biomarkers for schizophrenia and risperidone action. J Proteome Res 2011; 10:5433-43. [PMID: 22007635 DOI: 10.1021/pr2006796] [Citation(s) in RCA: 102] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Despite recent advances in understanding the pathophysiology of schizophrenia and the mechanisms of antipsychotic drug action, the development of biomarkers for diagnosis and therapeutic monitoring in schizophrenia remains challenging. Metabolomics provides a powerful approach to discover diagnostic and therapeutic biomarkers by analyzing global changes in an individual's metabolic profile in response to pathophysiological stimuli or drug intervention. In this study, we performed gas chromatography-mass spectrometry based metabolomic profiling in serum of unmedicated schizophrenic patients before and after an 8-week risperidone monotherapy, to detect potential biomarkers associated with schizophrenia and risperidone treatment. Twenty-two marker metabolites contributing to the complete separation of schizophrenic patients from matched healthy controls were identified, with citrate, palmitic acid, myo-inositol, and allantoin exhibiting the best combined classification performance. Twenty marker metabolites contributing to the complete separation between posttreatment and pretreatment patients were identified, with myo-inositol, uric acid, and tryptophan showing the maximum combined classification performance. Metabolic pathways including energy metabolism, antioxidant defense systems, neurotransmitter metabolism, fatty acid biosynthesis, and phospholipid metabolism were found to be disturbed in schizophrenic patients and partially normalized following risperidone therapy. Further study of these metabolites may facilitate the development of noninvasive biomarkers and more efficient therapeutic strategies for schizophrenia.
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Affiliation(s)
- Jiekun Xuan
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200030, China
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Yao JK, Keshavan MS. Antioxidants, redox signaling, and pathophysiology in schizophrenia: an integrative view. Antioxid Redox Signal 2011; 15:2011-35. [PMID: 21126177 PMCID: PMC3159108 DOI: 10.1089/ars.2010.3603] [Citation(s) in RCA: 204] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2010] [Revised: 11/26/2010] [Accepted: 12/02/2010] [Indexed: 12/19/2022]
Abstract
Schizophrenia (SZ) is a brain disorder that has been intensively studied for over a century; yet, its etiology and multifactorial pathophysiology remain a puzzle. However, significant advances have been made in identifying numerous abnormalities in key biochemical systems. One among these is the antioxidant defense system (AODS) and redox signaling. This review summarizes the findings to date in human studies. The evidence can be broadly clustered into three major themes: perturbations in AODS, relationships between AODS alterations and other systems (i.e., membrane structure, immune function, and neurotransmission), and clinical implications. These domains of AODS have been examined in samples from both the central nervous system and peripheral tissues. Findings in patients with SZ include decreased nonenzymatic antioxidants, increased lipid peroxides and nitric oxides, and homeostatic imbalance of purine catabolism. Reductions of plasma antioxidant capacity are seen in patients with chronic illness as well as early in the course of SZ. Notably, these data indicate that many AODS alterations are independent of treatment effects. Moreover, there is burgeoning evidence indicating a link among oxidative stress, membrane defects, immune dysfunction, and multineurotransmitter pathologies in SZ. Finally, the body of evidence reviewed herein provides a theoretical rationale for the development of novel treatment approaches.
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Affiliation(s)
- Jeffrey K Yao
- Medical Research Service, VA Pittsburgh Healthcare System,7180 Highland Drive, Pittsburgh, PA 15206, USA.
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Krakowski M, Czobor P. Cholesterol and cognition in schizophrenia: a double-blind study of patients randomized to clozapine, olanzapine and haloperidol. Schizophr Res 2011; 130:27-33. [PMID: 21549568 DOI: 10.1016/j.schres.2011.04.005] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Revised: 03/30/2011] [Accepted: 04/05/2011] [Indexed: 11/25/2022]
Abstract
OBJECTIVE A positive relationship between cholesterol levels and cognition has been reported in various human and animal studies, but has never been investigated in schizophrenia. The goal of this study was to examine this relationship in schizophrenic patients randomized to clozapine, olanzapine or haloperidol. METHOD This was a double-blind randomized prospective 12-week study. Participants received a baseline evaluation including a cognitive battery consisting of an evaluation of psychomotor function, general executive function, visual and verbal memory, and visuospatial ability. Their fasting serum cholesterol level was also assessed. The participants were then randomized to clozapine, olanzapine, or haloperidol. They were evaluated at the end of 12 weeks. A general cognitive index (GCI) derived from the cognitive battery was the primary variable. RESULTS 82 patients had both baseline and endpoint neurocognitive assessments and cholesterol levels. There was a statistically and clinically significant positive association between change in cholesterol levels and change in GCI. This association was especially pronounced for verbal memory. There was no interaction between medication grouping and cholesterol level; the positive association was observable separately in each medication group. It was very robust and remained significant after we controlled for glucose and triglyceride levels, anticholinergic side effects, medication serum levels, cholesterol lowering medications, and pre-study antipsychotic medications. CONCLUSIONS Cholesterol levels show a strong association with cognition in schizophrenia in all medication groups. Further research on the role of lipid metabolism in cognition may suggest new treatments for this core deficit of schizophrenia.
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Affiliation(s)
- Menahem Krakowski
- Nathan Kline Institute for Psychiatric Research, 140 Old Orangeburg Road, Orangeburg, NY 10962, United States.
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Examining the association between maternal analgesic use during pregnancy and risk of psychotic symptoms during adolescence. Schizophr Res 2011; 126:220-5. [PMID: 21146371 DOI: 10.1016/j.schres.2010.10.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2010] [Revised: 10/22/2010] [Accepted: 10/24/2010] [Indexed: 11/24/2022]
Abstract
BACKGROUND Children and adolescents who report psychotic symptoms in non-clinical samples are at an increased risk of developing schizophrenia. Study of such 'high risk' groups may increase our understanding of early risk factors for psychotic illnesses. Maternal infection during pregnancy is associated with an increased risk of schizophrenia in the offspring, and it has been hypothesised that exposure to maternal intake of analgesics during pregnancy, taken to alleviate the symptoms of viral infections, may partly explain this association. The aim of this study was to examine the relationship between maternal use of aspirin and other analgesics during pregnancy and the occurrence of psychotic symptoms in the offspring. METHODS This was a longitudinal study of 6437 children belonging to the Avon Longitudinal Study of Parents and Children (ALSPAC) cohort who participated in the psychosis-like-symptoms semi-structured interview (PLIKSi) at 12years of age. Data on in-utero exposure to analgesics were obtained from self-report questionnaires completed by the mothers during pregnancy. RESULTS Increasing frequency of aspirin use during pregnancy was associated with an increased risk of psychotic experiences (adjusted OR 1.44, 95% CI 1.08-1.92). Risk was highest in those whose mothers used aspirin most days or daily (adjusted OR 2.79, 95% CI 1.27-6.07). Paracetamol and other analgesic use during pregnancy were not associated with the risk of offspring psychotic symptoms. CONCLUSIONS Medications such as aspirin that interfere with the prostaglandin pathway, taken during pregnancy, may influence the risk of schizophrenia in the offspring. Other epidemiological studies are needed to examine this association further.
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Condray R, Yao JK. Cognition, dopamine and bioactive lipids in schizophrenia. Front Biosci (Schol Ed) 2011; 3:298-330. [PMID: 21196378 DOI: 10.2741/s153] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Schizophrenia is a remarkably complex disorder with a multitude of behavioral and biological perturbations. Cognitive deficits are a core feature of this disorder, and involve abnormalities across multiple domains, including memory, attention, and perception. The complexity of this debilitating illness has led to a view that the key to unraveling its pathophysiology lies in deconstructing the clinically-defined syndrome into pathophysiologically distinct intermediate phenotypes. Accumulating evidence suggests that one of these intermediate phenotypes may involve phospholipid signaling abnormalities, particularly in relation to arachidonic acid (AA). Our data show relationships between levels of AA and performance on tests of cognition for schizophrenia patients, with defects in AA signaling associated with deficits in cognition. Moreover, dopamine may moderate these relationships between AA and cognition. Taken together, cognitive deficits, dopaminergic neurotransmission, and bioactive lipids have emerged as related features of schizophrenia. Existing treatment options for cognitive deficits in schizophrenia do not specifically target lipid-derived signaling pathways; understanding these processes could inform efforts to identify novel targets for treatment innovation.
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Affiliation(s)
- Ruth Condray
- Department of Psychiatry and Western Psychiatric Institute and Clinic University of Pittsburgh School of Medicine, 3811 O'Hara Street, Pittsburgh, PA 15213, USA
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Messamore E, Hoffman WF, Yao JK. Niacin sensitivity and the arachidonic acid pathway in schizophrenia. Schizophr Res 2010; 122:248-56. [PMID: 20417059 PMCID: PMC2947210 DOI: 10.1016/j.schres.2010.03.025] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2009] [Revised: 03/16/2010] [Accepted: 03/18/2010] [Indexed: 12/20/2022]
Abstract
OBJECTIVE Schizophrenia is associated with a blunted flush response to niacin. Since niacin-induced skin flushing is mediated by vasodilators derived from arachidonic acid (AA), we tested whether the blunted flush response to niacin is a marker of AA deficiency. METHODS Eight concentrations of methylnicotinate were applied to the forearms of 20 adults with schizophrenia and 20 controls. Laser Doppler measurement of blood flow responses was used to derive values for niacin sensitivity (defined as the concentration eliciting half-maximal response, i.e., EC(50) value) and efficacy (defined as the maximal evoked blood flow response). RBC membrane fatty acids were analyzed by gas chromatography. RESULTS Niacin sensitivity and efficacy were reduced in schizophrenia. In the control group, there was significant correlation between AA levels and niacin sensitivity as well as a trend toward correlation between AA levels and niacin efficacy. In contrast, neither sensitivity nor efficacy of niacin correlated with AA levels in schizophrenia. An expected correlation between the levels of AA and its elongation product (adrenic acid) was absent in schizophrenia. Adrenic acid levels correlated with niacin efficacy in schizophrenia. CONCLUSIONS The schizophrenia-associated niacin response abnormality involves both diminished sensitivity and reduced efficacy. The lack of expected correlation between levels of AA and adrenic acid suggests homeostatic imbalance within the n-6 polyunsaturated fatty acid (PUFA) pathway in schizophrenia. Though AA levels were unrelated to measures of niacin response in schizophrenia, the correlation between adrenic acid and niacin efficacy in schizophrenia suggests relevance of the n-6 PUFA pathway to the blunted niacin response.
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Affiliation(s)
- Erik Messamore
- Behavorial Health and Clinical Neurosciences Division, Portland VA Medical Center, Portland, OR 97239, USA.
| | - William F. Hoffman
- Behavorial Health and Clinical Neurosciences Division, Portland VA Medical Center, Portland, Oregon 97239, USA
| | - Jeffrey K. Yao
- VA Pittsburgh Healthcare System, 7180 Highland Drive, Pittsburgh, Pennsylvania 15206, USA,Departments of Psychiatry and Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
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Yao JK, Dougherty GG, Reddy RD, Keshavan MS, Montrose DM, Matson WR, Rozen S, Krishnan RR, McEvoy J, Kaddurah-Daouk R. Altered interactions of tryptophan metabolites in first-episode neuroleptic-naive patients with schizophrenia. Mol Psychiatry 2010; 15:938-53. [PMID: 19401681 PMCID: PMC2953575 DOI: 10.1038/mp.2009.33] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Schizophrenia is characterized by complex and dynamically interacting perturbations in multiple neurochemical systems. In the past, evidence for these alterations has been collected piecemeal, limiting our understanding of the interactions among relevant biological systems. Earlier, both hyper- and hyposerotonemia were variously associated with the longitudinal course of schizophrenia, suggesting a disturbance in the central serotonin (5-hydroxytryptamine (5-HT)) function. Using a targeted electrochemistry-based metabolomics platform, we compared metabolic signatures consisting of 13 plasma tryptophan (Trp) metabolites simultaneously between first-episode neuroleptic-naive patients with schizophrenia (FENNS, n=25) and healthy controls (HC, n=30). We also compared these metabolites between FENNS at baseline (BL) and 4 weeks (4w) after antipsychotic treatment. N-acetylserotonin was increased in FENNS-BL compared with HC (P=0.0077, which remained nearly significant after Bonferroni correction). N-acetylserotonin/Trp and melatonin (Mel)/serotonin ratios were higher, and Mel/N-acetylserotonin ratio was lower in FENNS-BL (all P-values<0.0029), but not after treatment, compared with HC volunteers. All three groups had highly significant correlations between Trp and its metabolites, Mel, kynurenine, 3-hydroxykynurenine and tryptamine. However, in the HC, but in neither of the FENNS groups, serotonin was highly correlated with Trp, Mel, kynurenine or tryptamine, and 5-hydroxyindoleacetic acid (5HIAA) was highly correlated with Trp, Mel, kynurenine or 3-hydroxykynurenine. A significant difference between HC and FENNS-BL was further shown only for the Trp-5HIAA correlation. Thus, some metabolite interactions within the Trp pathway seem to be altered in the FENNS-BL patients. Conversion of serotonin to N-acetylserotonin by serotonin N-acetyltransferase may be upregulated in FENNS patients, possibly related to the observed alteration in Trp-5HIAA correlation. Considering N-acetylserotonin as a potent antioxidant, such increases in N-acetylserotonin might be a compensatory response to increased oxidative stress, implicated in the pathogenesis of schizophrenia.
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Affiliation(s)
- JK Yao
- VA Pittsburgh Healthcare System, Pittsburgh, PA, USA, Department of Psychiatry, Western Psychiatric Institute & Clinic, University of Pittsburgh Medical Center, Pittsburgh, PA, USA, Department of Pharmaceutical Sciences, University of Pittsburgh School of Pharmacy, Pittsburgh, PA, USA
| | - GG Dougherty
- VA Pittsburgh Healthcare System, Pittsburgh, PA, USA, Department of Psychiatry, Western Psychiatric Institute & Clinic, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - RD Reddy
- VA Pittsburgh Healthcare System, Pittsburgh, PA, USA, Department of Psychiatry, Western Psychiatric Institute & Clinic, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - MS Keshavan
- Department of Psychiatry, Western Psychiatric Institute & Clinic, University of Pittsburgh Medical Center, Pittsburgh, PA, USA, Department of Psychiatry and Behavioral Neurosciences, Wayne State University, Detroit, MI, USA, Department of Psychiatry, Beth Israel Deaconess Medical Center and Harvard University, Boston, MA, USA
| | - DM Montrose
- Department of Psychiatry, Western Psychiatric Institute & Clinic, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - WR Matson
- Bedford VA Medical Center, Bedford, MA, USA
| | - S Rozen
- Whitehead Institute for Biomedical Research, Cambridge, MA, USA
| | - RR Krishnan
- Duke University Medical Center, Durham, NC, USA
| | - J McEvoy
- Duke University Medical Center, Durham, NC, USA
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Martins-De-Souza D, Wobrock T, Zerr I, Schmitt A, Gawinecka J, Schneider-Axmann T, Falkai P, Turck CW. Different apolipoprotein E, apolipoprotein A1 and prostaglandin-H2 D-isomerase levels in cerebrospinal fluid of schizophrenia patients and healthy controls. World J Biol Psychiatry 2010; 11:719-28. [PMID: 20446881 DOI: 10.3109/15622971003758748] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
OBJECTIVES To identify proteins differentially expressed in schizophrenia patients, we collected 50 microl cerebrospinal fluid from 17 first-episode schizophrenia patients and 10 healthy controls. METHODS Their proteins were separated by two-dimensional gel electrophoresis without using any depletion method and identified by mass spectrometry. RESULTS Approximately 550 spots were detected, six of which had significantly different intensities in schizophrenia compared to control specimens. We were able to validate in individual samples the upregulation of apolipoprotein E, apolipoprotein A1 and prostaglandin-H2 D-isomerase by Western blot analyses and detect the downregulation of transthyretin, TGF-beta receptor type-1 and coiled-coil domain-containing protein 3 precursor. CONCLUSIONS These findings may help to elucidate the disease mechanisms and confirm the hypothesis of disturbed cholesterol and phospholipid metabolism in schizophrenia, and thus reveal the final role players. Moreover, a grouped protein expression analysis of apolipoprotein E, apolipoprotein A-I, and prostaglandin-H2 D-isomerase in cerebrospinal fluid from patients might be a potential diagnostic tool for schizophrenia.
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Song BJ, Elbert A, Rahman T, Orr SK, Chen CT, Febbraio M, Bazinet RP. Genetic Ablation of CD36 Does not Alter Mouse Brain Polyunsaturated Fatty Acid Concentrations. Lipids 2010; 45:291-9. [DOI: 10.1007/s11745-010-3398-z] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2009] [Accepted: 02/08/2010] [Indexed: 12/30/2022]
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McNamara RK. Modulation of polyunsaturated fatty acid biosynthesis by antipsychotic medications: implications for the pathophysiology and treatment of schizophrenia. ACTA ACUST UNITED AC 2009. [DOI: 10.2217/clp.09.62] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Pazvantoglu O, Selek S, Okay IT, Sengul C, Karabekiroglu K, Dilbaz N, Erel O. Oxidative mechanisms in schizophrenia and their relationship with illness subtype and symptom profile. Psychiatry Clin Neurosci 2009; 63:693-700. [PMID: 19788631 DOI: 10.1111/j.1440-1819.2009.02015.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
AIM The aim of the present study was to investigate the differences in the antioxidant-oxidant balance (AO-OB) between schizophrenic patients and healthy individuals and to explore the relationship of AO-OB with illness subtypes and symptom profiles. METHODS After a 15-day drug-free period, schizophrenia patients (n = 50) in a clinical sample, and age- and sex-matched healthy subjects (n = 49) were enrolled. Total antioxidant potentials (TAOP) and total peroxide levels (TPEROX) of all participants were measured and the oxidative stress index (OSI) was calculated. The assessment included structured measurements, including the Positive and Negative Syndrome Scale (PANSS), and the Brief Psychiatric Rating Scale (BPRS). RESULTS TAOP had a significant positive correlation with age at onset of schizophrenia (P = 0.013), a negative correlation with the PANSS negative subscale scores (P = 0.008), a negative correlation with the PANSS total scores (P < 0.001), and a significant negative correlation with BPRS scores (P = 0.001). OSI had a significant negative correlation with age at onset (P = 0.046) and a significant positive correlation with PANSS negative subscale (P = 0.015). A multiple regression model indicated a significant linear combination of age, gender, duration of illness, subtype of schizophrenia, and PANSS scores, in which only the subtype of schizophrenia made a statistically significant contribution to predicting mean OSI (F[5,35] = 2.44, P = 0.04). CONCLUSION Several parameters in the pathogenesis of schizophrenia, such as age of onset, level of negative symptoms, and subtype of illness, but not the presence of the illness itself, are associated with the level of oxidative stress.
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Affiliation(s)
- Ozan Pazvantoglu
- Department of Psychiatry, School of Medicine, Ondokuz Mayis University, Samsun, Turkey
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Is there a role for n-3 long-chain polyunsaturated fatty acids in the regulation of mood and behaviour? A review of the evidence to date from epidemiological studies, clinical studies and intervention trials. Nutr Res Rev 2009; 21:13-41. [PMID: 19079852 DOI: 10.1017/s0954422408998620] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Selected biochemical evidence suggests a potential role for n-3 long-chain PUFA (n-3PUFA) in the regulation of mood and behaviour. The present paper reviews the relevant evidence, to date, from epidemiological studies, clinical studies and intervention trials. Most evidence is available investigating a role for n-3PUFA in depression, depressive illness and suicidal behaviour, but work is also available on anxiety and anxiety-related disorders, fatigue and fatigue-related disorders, aggression, hostility and anti-social behaviour, inattention, impulsivity and attention deficit hyperactivity disorder and schizophrenic disorders. For all these aspects of mood and behaviour, the evidence available is currently limited and highly inconsistent, both in terms of study methodology and study findings. There is a clear need for further work in this area.
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Metabolomics: a global biochemical approach to the study of central nervous system diseases. Neuropsychopharmacology 2009; 34:173-86. [PMID: 18843269 DOI: 10.1038/npp.2008.174] [Citation(s) in RCA: 205] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Metabolomics, the omics science of biochemistry, is a global approach to understanding regulation of metabolic pathways and metabolic networks of a biological system. Metabolomics complements data derived from genomics, transcriptomics, and proteomics to assist in providing a systems approach to the study of human health and disease. In this review we focus on applications of metabolomics for the study of diseases of the nervous system. We share concepts in metabolomics, tools used in metabolic profiling and early findings from the study of neuropsychiatric diseases, and drugs used to treat these diseases. Metabolomics emerges as another powerful tool in central nervous system research.
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Semantic memory in schizophrenia: association with cell membrane essential fatty acids. Schizophr Res 2008; 106:13-28. [PMID: 18929465 PMCID: PMC2962952 DOI: 10.1016/j.schres.2008.03.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2007] [Revised: 02/25/2008] [Accepted: 03/13/2008] [Indexed: 12/24/2022]
Abstract
INTRODUCTION Semantic memory and language deficits are associated with schizophrenia. Understanding how these systems operate in this disorder will likely require a multi-factorial model that explains their linkages with cognition and modulation by dopamine. A biological factor that may provide causal convergence for these connections is cell membrane composition and dynamics. METHODS N400 is an electrophysiological measure of semantic memory and language that is sensitive to deficits in schizophrenia. Relationships among N400, cognition, dopamine, and cell membrane polyunsaturated fatty acids (PUFAs) were examined for patients tested under medicated (haloperidol only) and unmedicated (placebo) conditions. Relationships between these factors and clinical symptoms were also evaluated. The sample included 37 male schizophrenia inpatients and 34 male normal controls. The N400 priming effect was measured from visual event-related potentials recorded during a semantic priming-lexical decision task, in which semantic association (related versus unrelated words) and presentation rate (Stimulus Onset Asynchrony/SOAs: 350 and 950 ms) were varied. RESULTS N400 was associated with cognition (speed, visuoperception, attention) in patients and controls. These relationships were influenced by SOA in both groups, and by pharmacological condition in patients. Levels of total PUFAs and arachidonic acid were associated with N400 in unmedicated patients. Clinical symptoms (paranoia, thought disturbance) were associated with N400, but not with cognition or PUFAs. CONCLUSIONS Results suggest cell membrane fatty acids are associated with semantic memory and language in schizophrenia. Findings also suggest a series of linkages that are modulated by dopamine: cell membrane fatty acids are associated with N400 semantic priming; N400 semantic priming is associated with clinical symptoms.
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Schwarz E, Prabakaran S, Whitfield P, Major H, Leweke FM, Koethe D, McKenna P, Bahn S. High throughput lipidomic profiling of schizophrenia and bipolar disorder brain tissue reveals alterations of free fatty acids, phosphatidylcholines, and ceramides. J Proteome Res 2008; 7:4266-77. [PMID: 18778095 DOI: 10.1021/pr800188y] [Citation(s) in RCA: 137] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A mass spectrometry based high throughput approach was employed to profile white and gray matter lipid levels in the prefrontal cortex (Brodmann area 9) of 45 subjects including 15 schizophrenia and 15 bipolar disorder patients as well as 15 controls samples. We found statistically significant alterations in levels of free fatty acids and phosphatidylcholine in gray and white matter of both schizophrenia and bipolar disorder samples compared to controls. Also, ceramides were identified to be significantly increased in white matter of both neuropsychiatric disorders as compared to control levels. The patient cohort investigated in this study includes a number of drug naive as well as untreated patients, allowing the assessment of drug effects on lipid levels. Our findings indicate that while gray matter phosphatidylcholine levels were influenced by antipsychotic medication, this was not the case for phosphatidylcholine levels in white matter. Changes in free fatty acids or ceramides in either white or gray matter also did not appear to be influenced by antipsychotic treatment. To assess lipid profiles in the living patient, we also profiled lipids of 40 red blood cell samples, including 7 samples from drug naive first onset patients. We found significant alterations in the concentrations of free fatty acids as well as ceramide. Overall, our findings suggest that lipid abnormalities may be a disease intrinsic feature of both schizophrenia and bipolar disorder reflected by significant changes in the central nervous system as well as peripheral tissues.
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Affiliation(s)
- Emanuel Schwarz
- Institute of Biotechnology, University of Cambridge, Cambridge CB2 1QT, United Kingdom
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Conklin SM, Harris JI, Manuck SB, Yao JK, Hibbeln JR, Muldoon MF. Serum omega-3 fatty acids are associated with variation in mood, personality and behavior in hypercholesterolemic community volunteers. Psychiatry Res 2007; 152:1-10. [PMID: 17383013 DOI: 10.1016/j.psychres.2006.10.006] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2006] [Revised: 09/12/2006] [Accepted: 10/01/2006] [Indexed: 10/23/2022]
Abstract
Low dietary intake of omega-3 polyunsaturated fatty acids has been linked to several features of psychiatric symptomatology, including depression, disorders of impulse control, and hostility. Preliminary intervention trials of omega-3 fatty acid supplementation for clinical depression and other disorders have reported benefit. However, few studies have investigated the relationships between these fatty acids and normative variability in mood, behavior and personality. Participants were 105 hypercholesterolemic, but otherwise healthy, non-smoking adults. Fasting serum alpha-linolenic (alpha-LNA), eicosapentaenoic (EPA) and docosahexaenoic acid (DHA) were assayed with gas chromatography. Participants completed the Beck Depression Inventory (BDI), the NEO Five Factor Personality Inventory (NEO-FFI) and the Barratt Impulsiveness Scale (BIS). In multivariate analyses, higher levels of the long chain omega-3 PUFAs, EPA and DHA, were associated with significantly reduced odds of scoring >or=10 on the BDI. Similarly, DHA and EPA covaried inversely with NEO-Neuroticism scores, whereas DHA was positively associated with NEO-Agreeableness. On the BIS, DHA was inversely related to cognitive impulsivity and alpha-LNA was inversely related to motor and total impulsivity. These findings suggest that omega-3 fatty acid status is associated with variability in affect regulation, personality and impulse control.
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Affiliation(s)
- Sarah M Conklin
- Cardiovascular Behavioral Medicine Postdoctoral Training Program, Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA 15260, United States.
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Thomas EA, Yao JK. Clozapine specifically alters the arachidonic acid pathway in mice lacking apolipoprotein D. Schizophr Res 2007; 89:147-53. [PMID: 17011169 DOI: 10.1016/j.schres.2006.08.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2006] [Revised: 08/08/2006] [Accepted: 08/10/2006] [Indexed: 11/29/2022]
Abstract
Apolipoprotein D (apoD), a member of the lipocalin superfamily of lipid-binding proteins, exhibits abundant expression within the CNS of many species, including humans; however, its physiological role remains unclear. Treatment with atypical antipsychotic drugs, especially clozapine, results in elevation of apoD expression levels in rodent brain and in human plasma samples. In order to further explore the role of apoD in mechanisms of clozapine function, we have measured a panel of membrane fatty acids and membrane lipids in brain from drug-treated apoD knock-out mice. Mice received clozapine (10 mg/kg/day) in their drinking water for 28 days and forebrain samples were analyzed using high performance liquid chromatography and capillary gas chromatography. We identified significant differences in the levels of membrane fatty acids in response to clozapine treatment specifically in the brains of apoD knock-out mice, but not wild-type (wt) mice. The most striking observations were decreases in the levels of fatty acids related to metabolism of arachidonic acid (AA), which is a known binding partner for apoD. These include the precursor to arachidonic acid, linoleic acid (LA; 18:2n6c), arachidonic acid itself (20:4n6) and the elongation product of arachidonic acid, adrenic acid (22:4n6). We further report increases in LA, eicosadienoic acid and docosahexaenoic acid in apoD knock-out compared to wild-type mice. These findings implicate an important apoD/AA interaction, which may be necessary for clozapine function.
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Affiliation(s)
- Elizabeth A Thomas
- Department of Molecular Biology, The Scripps Research Institute, 10550 N. Torrey Pines Rd., MB-10, La Jolla, CA 92037, United States.
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