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Wei Y, Xue K, Yang M, Wang H, Chen J, Han S, Wang X, Li H, Zhang Y, Song X, Cheng J. Aberrant Cerebello-Thalamo-Cortical Functional and Effective Connectivity in First-Episode Schizophrenia With Auditory Verbal Hallucinations. Schizophr Bull 2022; 48:1336-1343. [PMID: 36029238 PMCID: PMC9673260 DOI: 10.1093/schbul/sbab142] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The thalamus is known to be impaired in schizophrenia patients with auditory verbal hallucinations (AVHs). Abnormal filtering function of the thalamus has been found in schizophrenia patients with AVHs. However, a whole-structure approach has commonly been adopted when investigating thalamic dysconnectivity in patients with AVHs, and it remains unclear which thalamic nucleus is the critical structure underlying AVHs. Here, we investigated voxel-wise resting-state functional connectivity (rsFC) of the thalamic nucleus in drug-naïve patients with first-episode schizophrenia (FES) with AVHs. In addition, dynamic causal modeling was applied to compute effective connectivity and estimate causal relationships that could explain aberrant rsFC. Compared with the FES patients without AVH (NAVH) and normal controls, patients with AVHs had weaker rsFC of the bilateral medial pulvinar (PuM) nucleus-cerebellum. Moreover, compared with the normal control group, the AVH and NAVH groups had significantly stronger rsFC of the bilateral PuM nucleus-cerebral cortex, as well as weaker rsFC of the right medial geniculate nucleus-cerebral cortex. Compared with the NAVH and normal control groups, dynamic causal modeling revealed significantly stronger effective connectivity from the left PuM nucleus to the right inferior frontal gyrus in the AVH group. These findings indicate that the critical structure in the thalamus underlying AVHs is the PuM nucleus, and provide direct evidence that the cerebello-thalamo-cortical circuit is associated with AVHs.
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Affiliation(s)
- Yarui Wei
- Department of Magnetic Resonance Imaging, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Kangkang Xue
- Department of Magnetic Resonance Imaging, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Meng Yang
- Department of Magnetic Resonance Imaging, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Huan Wang
- Hefei National Laboratory for Physical Sciences at Microscale, School of Life Science, University of Science and Technology of China, Hefei 230027, China
| | - Jingli Chen
- Department of Magnetic Resonance Imaging, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Shaoqiang Han
- Department of Magnetic Resonance Imaging, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Xiaoxiao Wang
- Hefei National Lab for Physical Sciences at the Microscale and Centers for Biomedical Engineering, University of Science and Technology of China, Hefei 230027,China
| | - Hong Li
- Department of Psychiatry, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052,China
| | - Yong Zhang
- Department of Magnetic Resonance Imaging, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Xueqin Song
- Department of Psychiatry, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052,China
| | - Jingliang Cheng
- Department of Magnetic Resonance Imaging, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Shao X, Liao Y, Gu L, Chen W, Tang J. The Etiology of Auditory Hallucinations in Schizophrenia: From Multidimensional Levels. Front Neurosci 2021; 15:755870. [PMID: 34858129 PMCID: PMC8632545 DOI: 10.3389/fnins.2021.755870] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 10/14/2021] [Indexed: 11/25/2022] Open
Abstract
Enormous efforts have been made to unveil the etiology of auditory hallucinations (AHs), and multiple genetic and neural factors have already been shown to have their own roles. Previous studies have shown that AHs in schizophrenia vary from those in other disorders, suggesting that they have unique features and possibly distinguishable mechanisms worthy of further investigation. In this review, we intend to offer a comprehensive summary of current findings related to AHs in schizophrenia from aspects of genetics and transcriptome, neurophysiology (neurometabolic and electroencephalogram studies), and neuroimaging (structural and functional magnetic resonance imaging studies and transcriptome–neuroimaging association study). Main findings include gene polymorphisms, glutamate level change, electroencephalographic alterations, and abnormalities of white matter fasciculi, cortical structure, and cerebral activities, especially in multiple regions, including auditory and language networks. More solid and comparable research is needed to replicate and integrate ongoing findings from multidimensional levels.
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Affiliation(s)
- Xu Shao
- Department of Psychiatry, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yanhui Liao
- Department of Psychiatry, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Lin Gu
- RIKEN AIP, Tokyo, Japan.,Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan
| | - Wei Chen
- Department of Psychiatry, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jinsong Tang
- Department of Psychiatry, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
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Liu C, Song S, Zhang J, Li X, Gao H. Effects of GSTA1 and GPX3 Polymorphisms on the Risk of Schizophrenia in Chinese Han Population. Neuropsychiatr Dis Treat 2020; 16:113-118. [PMID: 32021204 PMCID: PMC6957098 DOI: 10.2147/ndt.s236298] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 12/23/2019] [Indexed: 01/23/2023] Open
Abstract
PURPOSE Several lines of evidence support the fact that the presence of oxidative stress plays an important role in the pathophysiological mechanisms of schizophrenia (SCZ). The glutathione peroxidases (GPXs) and glutathione S-transferases (GSTs) are the major antioxidant enzymes. Polymorphic variants of GPX and GST can affect the antioxidant activities of their encoded enzymes. This study explored the possible associations of the GSTA1 and GPX3 gene polymorphisms and schizophrenia in Chinese Han population. METHODS DNA from 648 healthy controls and 617 schizophrenic patients was genotyped for single-nucleotide polymorphisms (SNPs) rs3957357 in GSTA1 and rs736775 in GPX3 using a PCR-LDR genotyping assay. The χ2 test compared differences in genetic distributions between the two groups in a case-control study. The generalized multifactor dimensionality reduction (GMDR) was used to explore the interaction between the GSTA1 gene and the GPX3 gene on the risk of SCZ. RESULTS Significant differences in allelic and genotypic frequencies of GSTA1 rs3957357 were present between SCZ and control groups (GSTA1 rs3957357 χ2=6.172, P=0.046 by genotype, χ2=5.847, P=0.016, odds ratio=1.329, 95% confidence interval=1.055-1.674 by allele). No significant differences in allelic or genotypic frequencies of GPX3 rs736775 were detected between cases and controls (GPX3 rs736775: χ2=2.058, P=0.357 by genotype, χ2=1.853, P=0.173, odds ratio=1.131, 95% confidence interval=0.953-1.342 by allele). Moreover, the GMDR model showed that the interaction between GSTA1 rs3957357 and GPX3 rs736775 was associated significantly with SCZ risk, P=0.0107. CONCLUSION Our results suggest that GSTA1 rs3957357 SNP has an effect on the risk of SCZ and the interaction between GSTA1 rs3957357and GPX3 rs736775 may affect the development of SCZ in Chinese Han population. However, these results should be validated by replication in different populations with large sample sizes.
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Affiliation(s)
- Chao Liu
- College of Pharmacy, Jining Medical University, Rizhao, Shandong, People's Republic of China
| | - Sijia Song
- Rizhao Mental Health Center, Rizhao, Shandong, People's Republic of China
| | - Junkai Zhang
- College of Pharmacy, Jining Medical University, Rizhao, Shandong, People's Republic of China
| | - Xiao Li
- College of Pharmacy, Jining Medical University, Rizhao, Shandong, People's Republic of China
| | - Huijie Gao
- College of Pharmacy, Jining Medical University, Rizhao, Shandong, People's Republic of China
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Michaud V, Tran M, Pronovost B, Bouchard P, Bilodeau S, Alain K, Vadnais B, Franco M, Bélanger F, Turgeon J. Impact of GSTA1 Polymorphisms on Busulfan Oral Clearance in Adult Patients Undergoing Hematopoietic Stem Cell Transplantation. Pharmaceutics 2019; 11:pharmaceutics11090440. [PMID: 31480560 PMCID: PMC6781287 DOI: 10.3390/pharmaceutics11090440] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 08/13/2019] [Accepted: 08/18/2019] [Indexed: 11/23/2022] Open
Abstract
Background: Busulfan pharmacokinetics exhibit large inter-subject variability. Our objective was to evaluate the influence of glutathione S-transferase A1 (GSTA1) gene variants on busulfan oral clearance (CLo) in a population of patients undergoing hematopoietic stem cell transplantation. Methods: This is a quasi-experimental retrospective study in adult patients (n = 87 included in the final analyses) receiving oral busulfan. Pharmacokinetics data (area under the plasma concentration-time curve (AUC) determined from 10 blood samples) were retrieved from patients’ files and GSTA1 *A and *B allele polymorphisms determined from banked DNA samples. Three different limited sampling methods (LSM) using four blood samples were also compared. Results: Carriers of GSTA1*B exhibited lower busulfan CLo than patients with an *A/*A genotype (p < 0.002): Busulfan CLo was 166 ± 31, 187 ± 37 vs. 207 ± 47 mL/min for GSTA1*B/*B,*A/*B and *A/*A genotypes, respectively. Similar results were obtained with the tested LSMs. Using the standard AUC method, distribution of patients above the therapeutic range after the first dose was 29% for GSTA1*A/*A, 50% for *A/*B, and 65% for *B/*B. The LSMs correctly identified ≥91% of patients with an AUC above the therapeutic range. The misclassified patients had a mean difference less than 5% in their AUCs. Conclusion: Patients carrying GSTA1 loss of function *B allele were at increased risk of overdosing on their initial busulfan oral dose. Genetic polymorphisms associated with GSTA1 explain a significant part of busulfan CLo variability which could be captured by LSM strategies.
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Affiliation(s)
- Veronique Michaud
- Faculty of Pharmacy, Université de Montréal, Montreal, QC H3C 3J7, Canada
- CRCHUM, Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, QC H2X 0A9, Canada
| | - My Tran
- College of Pharmacy, Lake Nona Campus, University of Florida, Orlando, FL 32827, USA
| | - Benoit Pronovost
- Faculty of Pharmacy, Université de Montréal, Montreal, QC H3C 3J7, Canada
| | - Philippe Bouchard
- Faculty of Pharmacy, Université de Montréal, Montreal, QC H3C 3J7, Canada
- Hôpital Maisonneuve-Rosemont, Montreal, QC H1T 2M4, Canada
| | - Sarah Bilodeau
- Faculty of Pharmacy, Université de Montréal, Montreal, QC H3C 3J7, Canada
- Hôpital Maisonneuve-Rosemont, Montreal, QC H1T 2M4, Canada
| | - Karine Alain
- Faculty of Pharmacy, Université de Montréal, Montreal, QC H3C 3J7, Canada
- Hôpital Maisonneuve-Rosemont, Montreal, QC H1T 2M4, Canada
| | - Barbara Vadnais
- Faculty of Pharmacy, Université de Montréal, Montreal, QC H3C 3J7, Canada
- Hôpital Maisonneuve-Rosemont, Montreal, QC H1T 2M4, Canada
| | - Martin Franco
- Faculty of Pharmacy, Université de Montréal, Montreal, QC H3C 3J7, Canada
- Hôpital Maisonneuve-Rosemont, Montreal, QC H1T 2M4, Canada
| | - François Bélanger
- CRCHUM, Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, QC H2X 0A9, Canada
| | - Jacques Turgeon
- Faculty of Pharmacy, Université de Montréal, Montreal, QC H3C 3J7, Canada.
- CRCHUM, Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, QC H2X 0A9, Canada.
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Xavier RM, Vorderstrasse A. Genetic Basis of Positive and Negative Symptom Domains in Schizophrenia. Biol Res Nurs 2017; 19:559-575. [PMID: 28691507 DOI: 10.1177/1099800417715907] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Schizophrenia is a highly heritable disorder, the genetic etiology of which has been well established. Yet despite significant advances in genetics research, the pathophysiological mechanisms of this disorder largely remain unknown. This gap has been attributed to the complexity of the polygenic disorder, which has a heterogeneous clinical profile. Examining the genetic basis of schizophrenia subphenotypes, such as those based on particular symptoms, is thus a useful strategy for decoding the underlying mechanisms. This review of literature examines the recent advances (from 2011) in genetic exploration of positive and negative symptoms in schizophrenia. We searched electronic databases PubMed, Web of Science, and Cumulative Index to Nursing and Allied Health Literature using key words schizophrenia, symptoms, positive symptoms, negative symptoms, cognition, genetics, genes, genetic predisposition, and genotype in various combinations. We identified 115 articles, which are included in the review. Evidence from these studies, most of which are genetic association studies, identifies shared and unique gene associations for the symptom domains. Genes associated with neurotransmitter systems and neuronal development/maintenance primarily constitute the shared associations. Needed are studies that examine the genetic basis of specific symptoms within the broader domains in addition to functional mechanisms. Such investigations are critical to developing precision treatment and care for individuals afflicted with schizophrenia.
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Affiliation(s)
| | - Allison Vorderstrasse
- 2 Duke Center for Applied Genomics and Precision Medicine, Duke University School of Nursing, Durham, NC, USA
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Koga M, Serritella AV, Sawa A, Sedlak TW. Implications for reactive oxygen species in schizophrenia pathogenesis. Schizophr Res 2016; 176:52-71. [PMID: 26589391 DOI: 10.1016/j.schres.2015.06.022] [Citation(s) in RCA: 114] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 06/20/2015] [Accepted: 06/23/2015] [Indexed: 12/18/2022]
Abstract
Oxidative stress is a well-recognized participant in the pathophysiology of multiple brain disorders, particularly neurodegenerative conditions such as Alzheimer's and Parkinson's diseases. While not a dementia, a wide body of evidence has also been accumulating for aberrant reactive oxygen species and inflammation in schizophrenia. Here we highlight roles for oxidative stress as a common mechanism by which varied genetic and epidemiologic risk factors impact upon neurodevelopmental processes that underlie the schizophrenia syndrome. While there is longstanding evidence that schizophrenia may not have a single causative lesion, a common pathway involving oxidative stress opens the possibility for intervention at susceptible phases.
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Affiliation(s)
- Minori Koga
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Meyer 3-166, Baltimore, MD 21287, USA
| | - Anthony V Serritella
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Meyer 3-166, Baltimore, MD 21287, USA
| | - Akira Sawa
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Meyer 3-166, Baltimore, MD 21287, USA
| | - Thomas W Sedlak
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Meyer 3-166, Baltimore, MD 21287, USA.
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Pejovic-Milovancevic MM, Mandic-Maravic VD, Coric VM, Mitkovic-Voncina MM, Kostic MV, Savic-Radojevic AR, Ercegovac MD, Matic MG, Peljto AN, Lecic-Tosevski DR, Simic TP, Pljesa-Ercegovac MS. Glutathione S-Transferase Deletion Polymorphisms in Early-Onset Psychotic and Bipolar Disorders: A Case-Control Study. Lab Med 2016; 47:195-204. [PMID: 27114251 DOI: 10.1093/labmed/lmw017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 02/23/2016] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVE To examine glutathione S-transferase (GST) deletion polymorphisms in development of early-onset severe mental disorders, with the hypothesis that patients with GSTM1-null and GSTT1-null genotypes will develop psychotic disorders at a younger age. METHODS We identified GSTM1 and GSTT1 deletion polymorphisms by multiplex polymerase chain reaction (PCR) in 93 patients with early onset severe mental disorders and 278 control individuals. The diagnoses were confirmed by Schedule for Affective Disorders and Schizophrenia for School-Age Children-Present and Lifetime Version and Schedule for Affective Disorders and Schizophrenia-Life-Time Version (K-SADS-PL) interviews. RESULTS Individuals with the GSTM1-null genotype were at 3.36-fold higher risk of developing early-onset severe mental disorders than carriers of a corresponding active genotype. The risk of those disorders was increased by 6.59-fold in patients with GSTM1-null/GSTT1-active genotype. Patients with the GSTM1-null genotype were at approximately 2-fold increased risk for developing early-onset schizophrenia-spectrum disorder (EOS), early-onset bipolar disorder (EOBD) with psychotic symptoms, or early-onset first-episode psychosis (EOFEP), compared with patients with the GSTM1-active genotype. CONCLUSION The GSTM1-null genotype might be associated with higher risk for early onset severe mental disorders.
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Affiliation(s)
| | | | - Vesna M Coric
- Faculty of Medicine, University in Belgrade, Belgrade, Serbia Institute of Medical and Clinical Biochemistry, Belgrade, Serbia
| | | | | | - Ana R Savic-Radojevic
- Faculty of Medicine, University in Belgrade, Belgrade, Serbia Institute of Medical and Clinical Biochemistry, Belgrade, Serbia
| | - Marko D Ercegovac
- Faculty of Medicine, University in Belgrade, Belgrade, Serbia Clinic of Neurology, Clinical Centre of Serbia, Belgrade, Serbia
| | - Marija G Matic
- Faculty of Medicine, University in Belgrade, Belgrade, Serbia Institute of Medical and Clinical Biochemistry, Belgrade, Serbia
| | | | - Dusica R Lecic-Tosevski
- Institute of Mental Health, Belgrade, Serbia Faculty of Medicine, University in Belgrade, Belgrade, Serbia Serbian Academy of Science and Arts, Belgrade, Serbia
| | - Tatjana P Simic
- Faculty of Medicine, University in Belgrade, Belgrade, Serbia Institute of Medical and Clinical Biochemistry, Belgrade, Serbia
| | - Marija S Pljesa-Ercegovac
- Faculty of Medicine, University in Belgrade, Belgrade, Serbia Institute of Medical and Clinical Biochemistry, Belgrade, Serbia
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Significance of Polymorphisms and Expression of Enzyme-Encoding Genes Related to Glutathione in Hematopoietic Cancers and Solid Tumors. BIOMED RESEARCH INTERNATIONAL 2015; 2015:853573. [PMID: 26682223 PMCID: PMC4670853 DOI: 10.1155/2015/853573] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 10/13/2015] [Accepted: 11/05/2015] [Indexed: 12/13/2022]
Abstract
Antioxidant compounds such as glutathione and its enzymes have become the focus of attention of medical sciences. Glutathione, a specific tripeptide, is involved in many intercellular processes. The glutathione concentration is determined by the number of GAG repeats in gamma-glutamylcysteine synthetase. GAG polymorphisms are associated with an increased risk of schizophrenia, berylliosis, diabetes, lung cancer, and nasopharyngeal tumors. Cancer cells with high glutathione concentration are resistant to chemotherapy treatment. The oxidized form of glutathione is formed by glutathione peroxidases (GPXs). The changes in activity of GPX1, GPX2, and GPX3 isoforms may be associated with the development of cancers, for example, prostate cancer or even colon cancer. Detoxification of glutathione conjugates is possible due to activity of glutathione S-transferases (GSTs). Polymorphisms in GSTM1, GSTP1, and GSTO1 enzymes increase the risk of developing breast cancer and hepatocellular carcinoma. Gamma-glutamyl transpeptidases (GGTs) are responsible for glutathione degradation. Increased activity of GGT correlates with adverse prognosis in patients with breast cancer. Studies on genes encoding glutathione enzymes are continued in order to determine the correlation between DNA polymorphisms in cancer patients.
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Wu N, Chen J, Liu H, Zhao L, Liu S, Liu J, Su X, Wu W, Cong J, Qiu G, Wu Z. The involvement of ADAMTS-5 genetic polymorphisms in predisposition and diffusion tensor imaging alterations of lumbar disc degeneration. J Orthop Res 2014; 32:686-94. [PMID: 24415654 DOI: 10.1002/jor.22582] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2013] [Accepted: 12/17/2013] [Indexed: 02/04/2023]
Abstract
Low back pain is a global health problem in which more than 40% is caused by lumbar intervertebral disc degeneration (LDD). ADAMTS-5 (A disintegrin and metalloproteinase with thrombospondin motifs-5) was shown to be involved in LDD by functional analyses. To identify whether there is an association between ADAMTS-5 and LDD, and what is the contribution of ADAMTS-5 genetic polymorphisms to MD (Mean diffusivity) changes in lumbar IVD (Intervertebral disc). We firstly genotyped selected ADAMTS-5 SNPs (Single nucleotide polymorphisms) in a Chinese Han population. After the primary analyses of allelic, genotypic, and haplotypic association, we performed SNP-SNP interaction analysis. We subsequently genotyped another 50 participants and acquired the corresponding MD values from individual lumbar IVDs. The association analysis between the genotypic groups divided by the above positive SNPs and the corresponding MD values were also performed. Significant associations were identified in rs151058, rs229052, and rs162502. None of the 2-SNP haplotypic analysis survived the 10,000 permutation test. The following interaction analysis demonstrated that rs151058 was strong associated with LDD when conditioning on rs162502. Significant difference of MD values between AA and G+ carriers was identified in rs162502. This is the first study indicating that the SNPs of ADAMTS-5 may contribute to predisposition of LDD. An interaction between rs151058 and rs229052 may exist in ADAMTS-5 with LDD. The rs162502 might be associated with altered MD values.
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Affiliation(s)
- Nan Wu
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, No.1 Shuaifuyuan, Beijing, 100730, P.R. China
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Spalletta G, Piras F, Alex Rubino I, Caltagirone C, Fagioli S. Fronto-thalamic volumetry markers of somatic delusions and hallucinations in schizophrenia. Psychiatry Res 2013; 212:54-64. [PMID: 23158777 DOI: 10.1016/j.pscychresns.2012.04.015] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Revised: 02/15/2012] [Accepted: 04/23/2012] [Indexed: 01/03/2023]
Abstract
Although the psychotic phenomena of schizophrenia have been extensively investigated, somatic delusions and hallucinations have seldom been reported and their mechanisms are substantially unexplored. Here, we aimed to identify the brain structural correlates of somatic psychotic phenomena using combined volumetry and diffusivity structural neuroimaging techniques. Seventy-five individuals with a DSM-IV-TR diagnosis of schizophrenia and 75 healthy controls (HC) underwent a comprehensive clinical assessment, a high-resolution T1-weighted magnetic resonance imaging and a diffusion tensor imaging protocol using a 3T MRI scanner. Voxel-based volumetry and mean diffusivity (MD) of gray matter (GM) and fractional anisotropy (FA) of white matter (WM) of the whole brain were calculated for each subject. Reduced left fronto-insular GM volume was found in patients with somatic delusions compared with patients without somatic delusions and HC. Increased GM volume was found in the bilateral thalami, primarily in the right ventral-anterior thalamic nucleus projecting to the prefrontal-temporal cortices and the bilateral pars triangularis of the inferior frontal lobe, of patients with somatic hallucinations and HC compared with patients without somatic hallucinations. No differences emerged in GM MD and in WM FA between patients with and without psychotic somatic phenomena (i.e. delusions or hallucinations). These findings provide the first evidence that a frontal-thalamic structural perturbation mediates somatic psychotic phenomena in schizophrenia.
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Affiliation(s)
- Gianfranco Spalletta
- IRCCS Santa Lucia Foundation, Neuropsychiatry laboratory, Department of Clinical and Behavioral Neurology, Via Ardeatina, 306-00179 Rome, Italy.
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