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Xu C, Wang Z, Liu Y, Duan K, Guan J. Delivery of miR-15b-5p via magnetic nanoparticle-enhanced bone marrow mesenchymal stem cell-derived extracellular vesicles mitigates diabetic osteoporosis by targeting GFAP. Cell Biol Toxicol 2024; 40:52. [PMID: 38967699 PMCID: PMC11226493 DOI: 10.1007/s10565-024-09877-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 05/15/2024] [Indexed: 07/06/2024]
Abstract
Diabetic osteoporosis (DO) presents significant clinical challenges. This study aimed to investigate the potential of magnetic nanoparticle-enhanced extracellular vesicles (GMNPE-EVs) derived from bone marrow mesenchymal stem cells (BMSCs) to deliver miR-15b-5p, thereby targeting and downregulating glial fibrillary acidic protein (GFAP) expression in rat DO models. Data was sourced from DO-related RNA-seq datasets combined with GEO and GeneCards databases. Rat primary BMSCs, bone marrow-derived macrophages (BMMs), and osteoclasts were isolated and cultured. EVs were separated, and GMNPE targeting EVs were synthesized. Bioinformatic analysis revealed a high GFAP expression in DO-related RNA-seq and GSE26168 datasets for disease models. Experimental results confirmed elevated GFAP in rat DO bone tissues, promoting osteoclast differentiation. miR-15b-5p was identified as a GFAP inhibitor, but was significantly downregulated in DO and enriched in BMSC-derived EVs. In vitro experiments showed that GMNPE-EVs could transfer miR-15b-5p to osteoclasts, downregulating GFAP and inhibiting osteoclast differentiation. In vivo tests confirmed the therapeutic potential of this approach in alleviating rat DO. Collectively, GMNPE-EVs can effectively deliver miR-15b-5p to osteoclasts, downregulating GFAP expression, and hence, offering a therapeutic strategy for rat DO.
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Affiliation(s)
- Chen Xu
- Department of Orthopedics, Bengbu Medical University Affiliated to First Hospital, Anhui Province Key Laboratory of Tissue Transplantation (Bengbu Medical College), 2600 Donghai Avenue, No. 287, Changhuai Road, Longzihu District, Bengbu, 233000, Anhui Province, China
- Anhui Province Key Laboratory of Tissue Transplantation (Bengbu Medical College), 2600 Donghai Avenue, Bengbu, 233030, China
| | - Zhaodong Wang
- Department of Orthopedics, Bengbu Medical University Affiliated to First Hospital, Anhui Province Key Laboratory of Tissue Transplantation (Bengbu Medical College), 2600 Donghai Avenue, No. 287, Changhuai Road, Longzihu District, Bengbu, 233000, Anhui Province, China
- Anhui Province Key Laboratory of Tissue Transplantation (Bengbu Medical College), 2600 Donghai Avenue, Bengbu, 233030, China
| | - Yajun Liu
- Department of Orthopedics, Bengbu Medical University Affiliated to First Hospital, Anhui Province Key Laboratory of Tissue Transplantation (Bengbu Medical College), 2600 Donghai Avenue, No. 287, Changhuai Road, Longzihu District, Bengbu, 233000, Anhui Province, China
- Anhui Province Key Laboratory of Tissue Transplantation (Bengbu Medical College), 2600 Donghai Avenue, Bengbu, 233030, China
| | - Keyou Duan
- Department of Orthopedics, Bengbu Medical University Affiliated to First Hospital, Anhui Province Key Laboratory of Tissue Transplantation (Bengbu Medical College), 2600 Donghai Avenue, No. 287, Changhuai Road, Longzihu District, Bengbu, 233000, Anhui Province, China
- Anhui Province Key Laboratory of Tissue Transplantation (Bengbu Medical College), 2600 Donghai Avenue, Bengbu, 233030, China
| | - Jianzhong Guan
- Department of Orthopedics, Bengbu Medical University Affiliated to First Hospital, Anhui Province Key Laboratory of Tissue Transplantation (Bengbu Medical College), 2600 Donghai Avenue, No. 287, Changhuai Road, Longzihu District, Bengbu, 233000, Anhui Province, China.
- Anhui Province Key Laboratory of Tissue Transplantation (Bengbu Medical College), 2600 Donghai Avenue, Bengbu, 233030, China.
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Yermakovich D, André M, Brucato N, Kariwiga J, Leavesley M, Pankratov V, Mondal M, Ricaut FX, Dannemann M. Denisovan admixture facilitated environmental adaptation in Papua New Guinean populations. Proc Natl Acad Sci U S A 2024; 121:e2405889121. [PMID: 38889149 PMCID: PMC11214076 DOI: 10.1073/pnas.2405889121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Accepted: 05/16/2024] [Indexed: 06/20/2024] Open
Abstract
Neandertals and Denisovans, having inhabited distinct regions in Eurasia and possibly Oceania for over 200,000 y, experienced ample time to adapt to diverse environmental challenges these regions presented. Among present-day human populations, Papua New Guineans (PNG) stand out as one of the few carrying substantial amounts of both Neandertal and Denisovan DNA, a result of past admixture events with these archaic human groups. This study investigates the distribution of introgressed Denisovan and Neandertal DNA within two distinct PNG populations, residing in the highlands of Mt Wilhelm and the lowlands of Daru Island. These locations exhibit unique environmental features, some of which may parallel the challenges that archaic humans once confronted and adapted to. Our results show that PNG highlanders carry higher levels of Denisovan DNA compared to PNG lowlanders. Among the Denisovan-like haplotypes with higher frequencies in highlander populations, those exhibiting the greatest frequency difference compared to lowlander populations also demonstrate more pronounced differences in population frequencies than frequency-matched nonarchaic variants. Two of the five most highly differentiated of those haplotypes reside in genomic areas linked to brain development genes. Conversely, Denisovan-like haplotypes more frequent in lowlanders overlap with genes associated with immune response processes. Our findings suggest that Denisovan DNA has provided genetic variation associated with brain biology and immune response to PNG genomes, some of which might have facilitated adaptive processes to environmental challenges.
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Affiliation(s)
- Danat Yermakovich
- Center of Genomics, Evolution and Medicine, Institute of Genomics, University of Tartu, Tartu51010, Estonia
| | - Mathilde André
- Center of Genomics, Evolution and Medicine, Institute of Genomics, University of Tartu, Tartu51010, Estonia
| | - Nicolas Brucato
- Centre de Recherche sur la Biodiversité et l'Environnement, Université de Toulouse, Centre National de la Recherche Scientifique, Institut de Recherche pour le Développement, Toulouse Institut National Polytechnique, Université Toulouse 3–Paul Sabatier, cedex 9, Toulouse31062, France
| | - Jason Kariwiga
- Strand of Anthropology, Sociology and Archaeology, School of Humanities and Social Sciences, University of Papua New Guinea, PO Box 320, University 134, National Capital District, Papua New Guinea
- School of Social Science, University of Queensland, St. Lucia, QLD4072, Australia
| | - Matthew Leavesley
- Strand of Anthropology, Sociology and Archaeology, School of Humanities and Social Sciences, University of Papua New Guinea, PO Box 320, University 134, National Capital District, Papua New Guinea
- The Australian Research Council Centre of Excellence for Australian Biodiversity and Heritage & College of Arts, Society and Education, James Cook University, Cairns, QLD4870, Australia
| | - Vasili Pankratov
- Center of Genomics, Evolution and Medicine, Institute of Genomics, University of Tartu, Tartu51010, Estonia
| | - Mayukh Mondal
- Center of Genomics, Evolution and Medicine, Institute of Genomics, University of Tartu, Tartu51010, Estonia
- Institute of Clinical Molecular Biology, Christian-Albrechts-Universität zu Kiel, Kiel24118, Germany
| | - François-Xavier Ricaut
- Centre de Recherche sur la Biodiversité et l'Environnement, Université de Toulouse, Centre National de la Recherche Scientifique, Institut de Recherche pour le Développement, Toulouse Institut National Polytechnique, Université Toulouse 3–Paul Sabatier, cedex 9, Toulouse31062, France
| | - Michael Dannemann
- Center of Genomics, Evolution and Medicine, Institute of Genomics, University of Tartu, Tartu51010, Estonia
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de Vries LE, Jongejan A, Monteiro Fortes J, Balesar R, Rozemuller AJM, Moerland PD, Huitinga I, Swaab DF, Verhaagen J. Gene-expression profiling of individuals resilient to Alzheimer's disease reveals higher expression of genes related to metallothionein and mitochondrial processes and no changes in the unfolded protein response. Acta Neuropathol Commun 2024; 12:68. [PMID: 38664739 PMCID: PMC11046840 DOI: 10.1186/s40478-024-01760-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 03/10/2024] [Indexed: 04/28/2024] Open
Abstract
Some individuals show a discrepancy between cognition and the amount of neuropathological changes characteristic for Alzheimer's disease (AD). This phenomenon has been referred to as 'resilience'. The molecular and cellular underpinnings of resilience remain poorly understood. To obtain an unbiased understanding of the molecular changes underlying resilience, we investigated global changes in gene expression in the superior frontal gyrus of a cohort of cognitively and pathologically well-defined AD patients, resilient individuals and age-matched controls (n = 11-12 per group). 897 genes were significantly altered between AD and control, 1121 between resilient and control and 6 between resilient and AD. Gene set enrichment analysis (GSEA) revealed that the expression of metallothionein (MT) and of genes related to mitochondrial processes was higher in the resilient donors. Weighted gene co-expression network analysis (WGCNA) identified gene modules related to the unfolded protein response, mitochondrial processes and synaptic signaling to be differentially associated with resilience or dementia. As changes in MT, mitochondria, heat shock proteins and the unfolded protein response (UPR) were the most pronounced changes in the GSEA and/or WGCNA, immunohistochemistry was used to further validate these processes. MT was significantly increased in astrocytes in resilient individuals. A higher proportion of the mitochondrial gene MT-CO1 was detected outside the cell body versus inside the cell body in the resilient compared to the control group and there were higher levels of heat shock protein 70 (HSP70) and X-box-binding protein 1 spliced (XBP1s), two proteins related to heat shock proteins and the UPR, in the AD donors. Finally, we show evidence for putative sex-specific alterations in resilience, including gene expression differences related to autophagy in females compared to males. Taken together, these results show possible mechanisms involving MTs, mitochondrial processes and the UPR by which individuals might maintain cognition despite the presence of AD pathology.
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Affiliation(s)
- Luuk E de Vries
- Department of Neuroregeneration, Netherlands Institute for Neuroscience, Royal Netherlands Academy of Arts and Sciences, Meibergdreef 47, 1105 BA, Amsterdam, The Netherlands.
| | - Aldo Jongejan
- Amsterdam UMC Location University of Amsterdam, Epidemiology and Data Science, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
- Amsterdam Public Health, Methodology, Amsterdam, The Netherlands
- Amsterdam Infection and Immunity, Inflammatory Diseases, Amsterdam, The Netherlands
| | - Jennifer Monteiro Fortes
- Department of Neuropsychiatric Disorders, Netherlands Institute for Neuroscience, Institute of the Royal Netherlands Academy of Arts and Sciences, Meibergdreef 47, 1105 BA, Amsterdam, The Netherlands
| | - Rawien Balesar
- Department of Neuropsychiatric Disorders, Netherlands Institute for Neuroscience, Institute of the Royal Netherlands Academy of Arts and Sciences, Meibergdreef 47, 1105 BA, Amsterdam, The Netherlands
| | - Annemieke J M Rozemuller
- Department of Pathology, Amsterdam Neuroscience, Amsterdam UMC - Location VUmc, Amsterdam, The Netherlands
| | - Perry D Moerland
- Amsterdam UMC Location University of Amsterdam, Epidemiology and Data Science, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
- Amsterdam Public Health, Methodology, Amsterdam, The Netherlands
- Amsterdam Infection and Immunity, Inflammatory Diseases, Amsterdam, The Netherlands
| | - Inge Huitinga
- Department of Neuroimmunology, Netherlands Institute for Neuroscience, Institute of the Royal Netherlands Academy of Arts and Sciences, Meibergdreef 47, 1105 BA, Amsterdam, The Netherlands
- Center for Neuroscience, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, The Netherlands
| | - Dick F Swaab
- Department of Neuropsychiatric Disorders, Netherlands Institute for Neuroscience, Institute of the Royal Netherlands Academy of Arts and Sciences, Meibergdreef 47, 1105 BA, Amsterdam, The Netherlands
| | - Joost Verhaagen
- Department of Neuroregeneration, Netherlands Institute for Neuroscience, Royal Netherlands Academy of Arts and Sciences, Meibergdreef 47, 1105 BA, Amsterdam, The Netherlands.
- Center for Neurogenomics and Cognitive Research, Neuroscience Campus Amsterdam, VU University, Boelelaan 1085, 1081 HV, Amsterdam, The Netherlands.
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Ås J, Bertulyte I, Norgren N, Johansson A, Eriksson N, Green H, Wadelius M, Hallberg P. Whole genome case-control study of central nervous system toxicity due to antimicrobial drugs. PLoS One 2024; 19:e0299075. [PMID: 38422004 PMCID: PMC10903854 DOI: 10.1371/journal.pone.0299075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 02/03/2024] [Indexed: 03/02/2024] Open
Abstract
A genetic predisposition to central nervous system (CNS) toxicity induced by antimicrobial drugs (antibiotics, antivirals, antifungals, and antiparasitic drugs) has been suspected. Whole genome sequencing of 66 cases and 833 controls was performed to investigate whether antimicrobial drug-induced CNS toxicity was associated with genetic variation. The primary objective was to test whether antimicrobial-induced CNS toxicity was associated with seventeen efflux transporters at the blood-brain barrier. In this study, variants or structural elements in efflux transporters were not significantly associated with CNS toxicity. Secondary objectives were to test whether antimicrobial-induced CNS toxicity was associated with genes over the whole genome, with HLA, or with structural genetic variation. Uncommon variants in and close to three genes were significantly associated with CNS toxicity according to a sequence kernel association test combined with an optimal unified test (SKAT-O). These genes were LCP1 (q = 0.013), RETSAT (q = 0.013) and SFMBT2 (q = 0.035). Two variants were driving the LCP1 association: rs6561297 (p = 1.15x10-6, OR: 4.60 [95% CI: 2.51-8.46]) and the regulatory variant rs10492451 (p = 1.15x10-6, OR: 4.60 [95% CI: 2.51-8.46]). No common genetic variant, HLA-type or structural variation was associated with CNS toxicity. In conclusion, CNS toxicity due to antimicrobial drugs was associated with uncommon variants in LCP1, RETSAT and SFMBT2.
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Affiliation(s)
- Joel Ås
- Department of Medical Sciences, Clinical Pharmacogenomics and Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Ilma Bertulyte
- Department of Medical Sciences, Clinical Pharmacogenomics and Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Nina Norgren
- Department of Molecular Biology, National Bioinformatics Infrastructure Sweden, Science for Life Laboratory, Umeå University, Umeå, Sweden
| | - Anna Johansson
- Dept of Cell and Molecular Biology, National Bioinformatics Infrastructure Sweden, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Niclas Eriksson
- Department of Medical Sciences, Clinical Pharmacogenomics and Science for Life Laboratory, Uppsala University, Uppsala, Sweden
- Uppsala Clinical Research Center, Uppsala, Sweden
| | - Henrik Green
- Division of Clinical Chemistry and Pharmacology, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
- Department of Forensic Genetics and Forensic Toxicology, National Board of Forensic Medicine, Linköping, Sweden
| | - Mia Wadelius
- Department of Medical Sciences, Clinical Pharmacogenomics and Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Pär Hallberg
- Department of Medical Sciences, Clinical Pharmacogenomics and Science for Life Laboratory, Uppsala University, Uppsala, Sweden
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Arabfard M, Tajeddin N, Alizadeh S, Salesi M, Bayat H, Khorram Khorshid HR, Khamse S, Delbari A, Ohadi M. Dyads of GGC and GCC form hotspot colonies that coincide with the evolution of human and other great apes. BMC Genom Data 2024; 25:21. [PMID: 38383300 PMCID: PMC10880355 DOI: 10.1186/s12863-024-01207-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 02/11/2024] [Indexed: 02/23/2024] Open
Abstract
BACKGROUND GGC and GCC short tandem repeats (STRs) are of various evolutionary, biological, and pathological implications. However, the fundamental two-repeats (dyads) of these STRs are widely unexplored. RESULTS On a genome-wide scale, we mapped (GGC)2 and (GCC)2 dyads in human, and found monumental colonies (distance between each dyad < 500 bp) of extraordinary density, and in some instances periodicity. The largest (GCC)2 and (GGC)2 colonies were intergenic, homogeneous, and human-specific, consisting of 219 (GCC)2 on chromosome 2 (probability < 1.545E-219) and 70 (GGC)2 on chromosome 9 (probability = 1.809E-148). We also found that several colonies were shared in other great apes, and directionally increased in density and complexity in human, such as a colony of 99 (GCC)2 on chromosome 20, that specifically expanded in great apes, and reached maximum complexity in human (probability 1.545E-220). Numerous other colonies of evolutionary relevance in human were detected in other largely overlooked regions of the genome, such as chromosome Y and pseudogenes. Several of the genes containing or nearest to those colonies were divergently expressed in human. CONCLUSION In conclusion, (GCC)2 and (GGC)2 form unprecedented genomic colonies that coincide with the evolution of human and other great apes. The extent of the genomic rearrangements leading to those colonies support overlooked recombination hotspots, shared across great apes. The identified colonies deserve to be studied in mechanistic, evolutionary, and functional platforms.
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Affiliation(s)
- M Arabfard
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - N Tajeddin
- Iranian Research Center on Aging, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
- Department of Biology, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | - S Alizadeh
- Iranian Research Center on Aging, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - M Salesi
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
- Research Center for Prevention of Oral and Dental Diseases, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - H Bayat
- Iranian Research Center on Aging, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - H R Khorram Khorshid
- Personalized Medicine and Genometabolomics Research Center, Hope Generation Foundation, Tehran, Iran
| | - S Khamse
- Iranian Research Center on Aging, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - A Delbari
- Iranian Research Center on Aging, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - M Ohadi
- Iranian Research Center on Aging, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
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Pereira CA, Reis-de-Oliveira G, Pierone BC, Martins-de-Souza D, Kaster MP. Depicting the molecular features of suicidal behavior: a review from an "omics" perspective. Psychiatry Res 2024; 332:115682. [PMID: 38198856 DOI: 10.1016/j.psychres.2023.115682] [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: 07/09/2023] [Revised: 12/05/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024]
Abstract
Background Suicide is one of the leading global causes of death. Behavior patterns from suicide ideation to completion are complex, involving multiple risk factors. Advances in technologies and large-scale bioinformatic tools are changing how we approach biomedical problems. The "omics" field may provide new knowledge about suicidal behavior to improve identification of relevant biological pathways associated with suicidal behavior. Methods We reviewed transcriptomic, proteomic, and metabolomic studies conducted in blood and post-mortem brains from individuals who experienced suicide or suicidal behavior. Omics data were combined using systems biology in silico, aiming at identifying major biological mechanisms and key molecules associated with suicide. Results Post-mortem samples of suicide completers indicate major dysregulations in pathways associated with glial cells (astrocytes and microglia), neurotransmission (GABAergic and glutamatergic systems), neuroplasticity and cell survivor, immune responses and energy homeostasis. In the periphery, studies found alterations in molecules involved in immune responses, polyamines, lipid transport, energy homeostasis, and amino and nucleic acid metabolism. Limitations We included only exploratory, non-hypothesis-driven studies; most studies only included one brain region and whole tissue analysis, and focused on suicide completers who were white males with almost none confounding factors. Conclusions We can highlight the importance of synaptic function, especially the balance between the inhibitory and excitatory synapses, and mechanisms associated with neuroplasticity, common pathways associated with psychiatric disorders. However, some of the pathways highlighted in this review, such as transcriptional factors associated with RNA splicing, formation of cortical connections, and gliogenesis, point to mechanisms that still need to be explored.
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Affiliation(s)
- Caibe Alves Pereira
- Laboratory of Translational Neurosciences, Department of Biochemistry, Federal University of Santa Catarina (UFSC), Florianopolis, Santa Catarina, Brazil
| | - Guilherme Reis-de-Oliveira
- Laboratory of Neuroproteomics, Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Bruna Caroline Pierone
- Laboratory of Translational Neurosciences, Department of Biochemistry, Federal University of Santa Catarina (UFSC), Florianopolis, Santa Catarina, Brazil
| | - Daniel Martins-de-Souza
- Laboratory of Neuroproteomics, Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil; Instituto Nacional de Biomarcadores Em Neuropsiquiatria (INBION) Conselho Nacional de Desenvolvimento Científico E Tecnológico, São Paulo, Brazil; Experimental Medicine Research Cluster (EMRC), University of Campinas, Campinas, SP, Brazil; D'Or Institute for Research and Education (IDOR), São Paulo, Brazil; INCT in Modelling Human Complex Diseases with 3D Platforms (Model3D), São Paulo, Brazil.
| | - Manuella Pinto Kaster
- Laboratory of Translational Neurosciences, Department of Biochemistry, Federal University of Santa Catarina (UFSC), Florianopolis, Santa Catarina, Brazil.
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Ruscu M, Capitanescu B, Rupek P, Dandekar T, Radu E, Hermann DM, Popa-Wagner A. The post-stroke young adult brain has limited capacity to re-express the gene expression patterns seen during early postnatal brain development. Brain Pathol 2024:e13232. [PMID: 38198833 DOI: 10.1111/bpa.13232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024] Open
Abstract
The developmental origins of the brain's response to injury can play an important role in recovery after a brain lesion. In this study, we investigated whether the ischemic young adult brain can re-express brain plasticity genes that were active during early postnatal development. Differentially expressed genes in the cortex of juvenile post-natal day 3 and the peri-infarcted cortical areas of young, 3-month-old post-stroke rats were identified using fixed-effects modeling within an empirical Bayes framework through condition-specific comparison. To further analyze potential biological processes, upregulated and downregulated genes were assessed for enrichment using GSEA software. The genes showing the highest expression changes were subsequently verified through RT-PCR. Our findings indicate that the adult brain partially recapitulates the gene expression profile observed in the juvenile brain but fails to upregulate many genes and pathways necessary for brain plasticity. Of the upregulated genes in post-stroke brains, specific roles have not been assigned to Apobec1, Cenpf, Ect2, Folr2, Glipr1, Myo1f, and Pttg1. New genes that failed to upregulate in the adult post-stroke brain include Bex4, Cd24, Klhl1/Mrp2, Trim67, and St8sia2. Among the upregulated pathways, the largest change was observed in the KEGG pathway "One carbon pool of folate," which is necessary for cellular proliferation, followed by the KEGG pathway "Antifolate resistance," whose genes mainly encode the family of ABC transporters responsible for the efflux of drugs that have entered the brain. We also noted three less-described downregulated KEGG pathways in experimental models: glycolipid biosynthesis, oxytocin, and cortisol pathways, which could be relevant as therapeutic targets. The limited brain plasticity of the adult brain is illustrated through molecular and histological analysis of the axonal growth factor, KIF4. Collectively, these results strongly suggest that further research is needed to decipher the complex genetic mechanisms that prevent the re-expression of brain plasticity-associated genes in the adult brain.
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Affiliation(s)
- Mihai Ruscu
- Vascular Neurology and Dementia, Department of Neurology, University Hospital Essen, Essen, Germany
- University of Medicine and Pharmacy Craiova, Craiova, Romania
| | | | - Paul Rupek
- Chair of Bioinformatics, University of Würzburg, Wuerzburg, Germany
| | - Thomas Dandekar
- Chair of Bioinformatics, University of Würzburg, Wuerzburg, Germany
| | - Eugen Radu
- University of Medicine and Pharmacy Carol Davila, Bucharest, Romania
| | - Dirk M Hermann
- Vascular Neurology and Dementia, Department of Neurology, University Hospital Essen, Essen, Germany
- University of Medicine and Pharmacy Craiova, Craiova, Romania
| | - Aurel Popa-Wagner
- Vascular Neurology and Dementia, Department of Neurology, University Hospital Essen, Essen, Germany
- University of Medicine and Pharmacy Craiova, Craiova, Romania
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8
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Drago A. Genetic signatures of suicide attempt behavior: insights and applications. Expert Rev Proteomics 2024; 21:41-53. [PMID: 38315076 DOI: 10.1080/14789450.2024.2314143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 01/22/2024] [Indexed: 02/07/2024]
Abstract
INTRODUCTION Every year about 800,000 complete suicide events occur. The identification of biologic markers to identify subjects at risk would be helpful in targeting specific support treatments. AREA COVERED A narrative review defines the meta-analytic level of current evidence about the biologic markers of suicide behavior (SB). The meta-analytic evidence gathered so far indicates that the hypothesis-driven research largely failed to identify the biologic markers of suicide. The most consistent and replicated result was reported for: 1) 5-HTR2A T102C, associated with SB in patients with schizophrenia (OR = 1.73 (1.11-2.69)) and 2) BDNF Val66Met (rs6265), with the Met-Val + Val-Val carriers found to be at risk for suicide in the Caucasian population (OR: 1.96 (1.58-2.43)), while Val-Val vs. Val-Met + Met carriers found to be at risk for suicide in the Asian populations (OR: 1.36 (1.04-1.78)). GWAS-based meta-analyses indicate some positive replicated findings regarding the DRD2, Neuroligin gene, estrogen-related genes, and genes involved in gene expression. EXPERT OPINION Most consistent results were obtained when analyzing sub-samples of patients. Some promising results come from the implementation of the polygenic risk score. There is no current consensus about an implementable biomarker for SB.
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Affiliation(s)
- Antonio Drago
- Department of Clinical Medicine, Aalborg University Hospital, Aalborg, Denmark
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Colita D, Burdusel D, Glavan D, Hermann DM, Colită CI, Colita E, Udristoiu I, Popa-Wagner A. Molecular mechanisms underlying major depressive disorder and post-stroke affective disorders. J Affect Disord 2024; 344:149-158. [PMID: 37827260 DOI: 10.1016/j.jad.2023.10.037] [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: 06/08/2023] [Revised: 09/24/2023] [Accepted: 10/08/2023] [Indexed: 10/14/2023]
Abstract
Two of the most common and incapacitating mental health disorders around the world are major depressive disorder (MDD) and post-stroke depression (PSD). MDD is thought to result from abnormal connectivity between the monoaminergic, glutamatergic, GABAergic, and/or cholinergic pathways. Additional factors include the roles of hormonal, immune, ageing, as well as the influence of cellular, molecular, and epigenetics in the development of mood disorders. This complexity of factors has been anticipated by the Swiss psychiatrists Paul Kielholz and Jules Angst who introduced a multimodal treatment of MDD. Depression is the predominant mood disorder, impacting around one-third of individuals who have experienced a stroke. MDD and PSD share common underlying biological mechanisms related to the disruption of monoaminergic pathways. The major contributor to PSD is the stroke lesion location, which can involve the disruption of the serotoninergic, dopaminergic, glutamatergic, GABAergic, or cholinergic pathways. Additionally, various other disorders such as mania, bipolar disorder, anxiety disorder, and apathy might occur post-stroke, although their prevalence is considerably lower. However, there are differences in the onset of MDD among mood disorders. Some mood disorders develop gradually and can persist for a lifetime, potentially culminating in suicide. In contrast, PSD has a rapid onset because of the severe disruption of neural pathways essential for mood behavior caused by the lesion. However, PSD might also spontaneously resolve several months after a stroke, though it is associated with higher mortality. This review also provides a brief overview of the treatments currently available in medical practice.
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Affiliation(s)
- Daniela Colita
- Doctoral School, University of Medicine and Pharmacy Carol Davila, 050474 Bucharest, Romania
| | - Daiana Burdusel
- Department of Psychiatry, University of Medicine and Pharmacy, 200349 Craiova, Romania; Chair of Vascular Neurology, Dementia and Ageing, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany
| | - Daniela Glavan
- Department of Psychiatry, University of Medicine and Pharmacy, 200349 Craiova, Romania; Chair of Vascular Neurology, Dementia and Ageing, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany
| | - Dirk M Hermann
- Chair of Vascular Neurology, Dementia and Ageing, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany
| | - Cezar-Ivan Colită
- Doctoral School, University of Medicine and Pharmacy Carol Davila, 050474 Bucharest, Romania
| | - Eugen Colita
- Doctoral School, University of Medicine and Pharmacy Carol Davila, 050474 Bucharest, Romania
| | - Ion Udristoiu
- Department of Psychiatry, University of Medicine and Pharmacy, 200349 Craiova, Romania.
| | - Aurel Popa-Wagner
- Chair of Vascular Neurology, Dementia and Ageing, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany.
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10
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Gawade K, Raczynska KD. Imprinted small nucleolar RNAs: Missing link in development and disease? WILEY INTERDISCIPLINARY REVIEWS. RNA 2023:e1818. [PMID: 37722601 DOI: 10.1002/wrna.1818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/31/2023] [Accepted: 08/31/2023] [Indexed: 09/20/2023]
Abstract
The 14q32.2 (DLK1-DIO3) and 15q11-q13 (SNURF-SNRPN) imprinted gene loci harbor the largest known small nucleolar RNA clusters expressed from the respective maternal and paternal alleles. Recent studies have demonstrated significant roles for the 15q11-q13 located SNORD115-SNORD116 C/D box snoRNAs in Prader-Willi syndrome (PWS), a neurodevelopmental disorder. Even though the effect of SNORD116 deletion is apparent in the PWS phenotype, similar effects of a SNORD113-SNORD114 cluster deletion from the 14q32.2 locus in Kagami-Ogata syndrome (KOS14) and upregulation in Temple syndrome (TS14) remain to be explored. Moreover, apart from their probable involvement in neurodevelopmental disorders, snoRNAs from the SNORD113-SNORD114 cluster have been implicated in multiple biological processes, including pluripotency, development, cancers, and RNA modifications. Here we summarize the current understanding of the system to explore the possibility of a link between developmental disorders and C/D box snoRNA expression from the imprinted 14q32.2 locus. This article is categorized under: RNA in Disease and Development > RNA in Disease RNA in Disease and Development > RNA in Development RNA Processing > Processing of Small RNAs.
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Affiliation(s)
- Kishor Gawade
- Laboratory of RNA Processing, Department of Gene Expression, Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University in Poznan, Poznan, Poland
- Center for Advanced Technology, Adam Mickiewicz University in Poznan, Poznan, Poland
| | - Katarzyna D Raczynska
- Laboratory of RNA Processing, Department of Gene Expression, Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University in Poznan, Poznan, Poland
- Center for Advanced Technology, Adam Mickiewicz University in Poznan, Poznan, Poland
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11
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Sun N, Cui WQ, Min XM, Zhang GM, Liu JZ, Wu HY. A new perspective on hippocampal synaptic plasticity and post-stroke depression. Eur J Neurosci 2023; 58:2961-2984. [PMID: 37518943 DOI: 10.1111/ejn.16093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 07/01/2023] [Accepted: 07/03/2023] [Indexed: 08/01/2023]
Abstract
Post-stroke depression, a common complication after stroke, severely affects the recovery and quality of life of patients with stroke. Owing to its complex mechanisms, post-stroke depression treatment remains highly challenging. Hippocampal synaptic plasticity is one of the key factors leading to post-stroke depression; however, the precise molecular mechanisms remain unclear. Numerous studies have found that neurotrophic factors, protein kinases and neurotransmitters influence depressive behaviour by modulating hippocampal synaptic plasticity. This review further elaborates on the role of hippocampal synaptic plasticity in post-stroke depression by summarizing recent research and analysing possible molecular mechanisms. Evidence for the correlation between hippocampal mechanisms and post-stroke depression helps to better understand the pathological process of post-stroke depression and improve its treatment.
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Affiliation(s)
- Ning Sun
- First College of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Wen-Qiang Cui
- Department of Neurology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Xiao-Man Min
- College of Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Guang-Ming Zhang
- College of Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Jia-Zheng Liu
- College of Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Hong-Yun Wu
- Department of Neurology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
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12
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Kotsiri I, Resta P, Spyrantis A, Panotopoulos C, Chaniotis D, Beloukas A, Magiorkinis E. Viral Infections and Schizophrenia: A Comprehensive Review. Viruses 2023; 15:1345. [PMID: 37376644 DOI: 10.3390/v15061345] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 06/02/2023] [Accepted: 06/08/2023] [Indexed: 06/29/2023] Open
Abstract
Schizophrenia is a complex mental disorder with multiple genetic and environmental factors contributing to its pathogenesis. Viral infections have been suggested to be one of the environmental factors associated with the development of this disorder. We comprehensively review all relevant published literature focusing on the relationship between schizophrenia and various viral infections, such as influenza virus, herpes virus 1 and 2 (HSV-1 and HSV-2), cytomegalovirus (CMV), Epstein-Barr virus (EBV), retrovirus, coronavirus, and Borna virus. These viruses may interfere with the normal maturation of the brain directly or through immune-induced mediators, such as cytokines, leading to the onset of schizophrenia. Changes in the expression of critical genes and elevated levels of inflammatory cytokines have been linked to virally-induced infections and relevant immune activities in schizophrenia. Future research is necessary to understand this relationship better and provide insight into the molecular mechanisms underlying the pathophysiology of schizophrenia.
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Affiliation(s)
- Ioanna Kotsiri
- Department of Internal Medicine, Asklipeion General Hospital, Voulas, 16673 Athens, Greece
| | - Panagiota Resta
- Department of Biomedical Sciences, University of West Attica, 12243 Athens, Greece
- National AIDS Reference Centre of Southern Greece, Department of Public Health Policy, University of West Attica, 11521 Athens, Greece
| | - Alexandros Spyrantis
- Department of Internal Medicine, Asklipeion General Hospital, Voulas, 16673 Athens, Greece
| | | | - Dimitrios Chaniotis
- Department of Biomedical Sciences, University of West Attica, 12243 Athens, Greece
| | - Apostolos Beloukas
- Department of Biomedical Sciences, University of West Attica, 12243 Athens, Greece
- National AIDS Reference Centre of Southern Greece, Department of Public Health Policy, University of West Attica, 11521 Athens, Greece
| | - Emmanouil Magiorkinis
- Department of Laboratory Medicine, Sotiria General Hospital for Chest Diseases, 11527 Athens, Greece
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13
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Yang S, Yi L, Xia X, Chen X, Hou X, Zhang L, Yang F, Liao J, Han Z, Fu Y. Transcriptome comparative analysis of amygdala-hippocampus in depression: A rat model induced by chronic unpredictable mild stress (CUMS). J Affect Disord 2023; 334:258-270. [PMID: 37105469 DOI: 10.1016/j.jad.2023.04.074] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 04/11/2023] [Accepted: 04/16/2023] [Indexed: 04/29/2023]
Abstract
BACKGROUND Depression is a common and complex mental disease, and its pathogenesis involves several brain regions. Abnormalities in the amygdala-hippocampal neural circuits have been shown to be involved in depression. However, the underlying molecular mechanisms remain unclear. METHODS A rat model was used to determine the transcriptome changes in the amygdala-hippocampal neural network under chronic unpredictable mild stress (CUMS). Depression-related modules in this neural network were identified using weighted gene co-expression network analysis (WGCNA). Difference and enrichment analyses were used to determine differential gene expression in the two brain regions. RESULTS The modules in the amygdala and hippocampus associated with depression-like behavior contained 363 and 225 genes, respectively. Forty-two differentially expressed genes were identified in the amygdala candidate module and 37 in the hippocampus. Enrichment analysis showed that candidate genes in the amygdala were associated with neuronal myelination and candidate genes in the hippocampus were associated with synaptic transmission. Finally, based on module hub gene statistics, differential gene expression, and protein-protein interaction networks, 11 central genes were found in the amygdala candidate module, and one central gene was found in the hippocampal module. LIMITATIONS Our study was based on a rat CUMS model. Further evidence is needed to prove that our results are applicable to patients with depression. CONCLUSION This study identified critical modules and central genes involved in the amygdala-hippocampal circuit in the context of depression, and may provide further understanding of the pathogenesis of depression and help identify potential targets for antidepressant therapy.
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Affiliation(s)
- Shu Yang
- Department of Psychiatry, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Li Yi
- Department of Psychiatry, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Xiaodi Xia
- Department of Psychiatry, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Xiaolu Chen
- The First Branch, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Xiao Hou
- Department of Clinical Medicine, Chongqing Medical and Pharmaceutical College, Chongqing 401331, China
| | - Longjie Zhang
- Department of Pharmacy, School of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Fang Yang
- Department of pharmacology, School of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Jiaxin Liao
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Zhijie Han
- Department of Bioinformatics, School of Basic Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Yixiao Fu
- Department of Psychiatry, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
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History of suicide attempt associated with amygdala and hippocampus changes among individuals with schizophrenia. Eur Arch Psychiatry Clin Neurosci 2023:10.1007/s00406-023-01554-5. [PMID: 36788147 DOI: 10.1007/s00406-023-01554-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 01/09/2023] [Indexed: 02/16/2023]
Abstract
Abnormalities in subcortical brain structures may reflect higher suicide risk in mood disorders, but less is known about its associations for schizophrenia. This cross-sectional imaging study aimed to explore whether the history of suicide attempts was associated with subcortical changes among individuals with schizophrenia. We recruited 44 individuals with schizophrenia and a history of suicide attempts (SZ-SA) and 44 individuals with schizophrenia but without a history of suicide attempts (SZ-NSA) and 44 healthy controls. Linear regression showed that SZ-SA had smaller volumes of the hippocampus (Cohen's d = -0.72), the amygdala (Cohen's d = -0.69), and some nuclei of the amygdala (Cohen's d, -0.57 to -0.72) than SZ-NSA after adjusting for age, sex, illness phase, and intracranial volume. There was no difference in the volume of the subfields of the hippocampus. It suggests the history of suicide attempts is associated with subcortical volume alterations in schizophrenia.
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15
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Lopresti BJ, Royse SK, Mathis CA, Tollefson SA, Narendran R. Beyond monoamines: I. Novel targets and radiotracers for Positron emission tomography imaging in psychiatric disorders. J Neurochem 2023; 164:364-400. [PMID: 35536762 DOI: 10.1111/jnc.15615] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 04/05/2022] [Accepted: 04/06/2022] [Indexed: 10/18/2022]
Abstract
With the emergence of positron emission tomography (PET) in the late 1970s, psychiatry had access to a tool capable of non-invasive assessment of human brain function. Early applications in psychiatry focused on identifying characteristic brain blood flow and metabolic derangements using radiotracers such as [15 O]H2 O and [18 F]FDG. Despite the success of these techniques, it became apparent that more specific probes were needed to understand the neurochemical bases of psychiatric disorders. The first neurochemical PET imaging probes targeted sites of action of neuroleptic (dopamine D2 receptors) and psychoactive (serotonin receptors) drugs. Based on the centrality of monoamine dysfunction in psychiatric disorders and the measured success of monoamine-enhancing drugs in treating them, the next 30 years witnessed the development of an armamentarium of PET radiopharmaceuticals and imaging methodologies for studying monoamines. Continued development of monoamine-enhancing drugs over this time however was less successful, realizing only modest gains in efficacy and tolerability. As patent protection for many widely prescribed and profitable psychiatric drugs lapsed, drug development pipelines shifted away from monoamines in search of novel targets with the promises of improved efficacy, or abandoned altogether. Over this period, PET radiopharmaceutical development activities closely paralleled drug development priorities resulting in the development of new PET imaging agents for non-monoamine targets. Part one of this review will briefly survey novel PET imaging targets with relevance to the field of psychiatry, which include the metabotropic glutamate receptor type 5 (mGluR5), purinergic P2 X7 receptor, type 1 cannabinoid receptor (CB1 ), phosphodiesterase 10A (PDE10A), and describe radiotracers developed for these and other targets that have matured to human subject investigations. Current limitations of the targets and techniques will also be discussed.
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Affiliation(s)
- Brian J Lopresti
- Departments of Radiology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Sarah K Royse
- Departments of Radiology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Chester A Mathis
- Departments of Radiology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Savannah A Tollefson
- Departments of Radiology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Rajesh Narendran
- Departments of Radiology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA.,Departments of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
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16
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Das SC, Schulmann A, Callor WB, Jerominski L, Panicker MM, Christensen ED, Bunney WE, Williams ME, Coon H, Vawter MP. Altered transcriptomes, cell type proportions, and dendritic spine morphology in hippocampus of suicide deaths. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.01.28.23285121. [PMID: 36778310 PMCID: PMC9915834 DOI: 10.1101/2023.01.28.23285121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Suicide is a condition resulting from complex environmental and genetic risks that affect millions of people globally. Both structural and functional studies identified the hippocampus as one of the vulnerable brain regions contributing to suicide risk. Here, we have identified the hippocampal transcriptomes, gene ontology, cell type proportions, dendritic spine morphology, and transcriptomic signature in iPSC-derived neuronal precursor cells (NPCs) and neurons in postmortem brain tissue from suicide deaths. The hippocampal tissue transcriptomic data revealed that NPAS4 gene expression was downregulated while ALDH1A2, NAAA, and MLXIPL gene expressions were upregulated in tissue from suicide deaths. The gene ontology identified 29 significant pathways including NPAS4-associated gene ontology terms "excitatory post-synaptic potential", "regulation of postsynaptic membrane potential" and "long-term memory" indicating alteration of glutamatergic synapses in the hippocampus of suicide deaths. The cell type deconvolution identified decreased excitatory neuron proportion and an increased inhibitory neuron proportion providing evidence of excitation/inhibition imbalance in the hippocampus of suicide deaths. In addition, suicide deaths had increased dendric spine density, due to an increase of thin (relatively unstable) dendritic spines, compared to controls. The transcriptomes of iPSC-derived hippocampal-like NPCs and neurons revealed 31 and 33 differentially expressed genes in NPC and neurons, respectively, of suicide deaths. The suicide-associated differentially expressed genes in NPCs were RELN, CRH, EMX2, OXTR, PARM1 and IFITM2 which overlapped with previously published results. The previously-known suicide-associated differentially expressed genes in differentiated neurons were COL1A1, THBS1, IFITM2, AQP1, and NLRP2. Together, these findings would help better understand the hippocampal neurobiology of suicide for identifying therapeutic targets to prevent suicide.
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Affiliation(s)
- Sujan C. Das
- Functional Genomics Laboratory, Department of Psychiatry & Human Behavior, University of California, Irvine, CA, USA
| | | | - William B. Callor
- Utah State Office of Medical Examiner, Utah Department of Health, Salt Lake City, UT, USA
| | - Leslie Jerominski
- Department of Psychiatry, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Mitradas M. Panicker
- Department of Physiology and Biophysics, School of Medicine, University of California, Irvine, USA
| | - Erik D. Christensen
- Utah State Office of Medical Examiner, Utah Department of Health, Salt Lake City, UT, USA
| | - William E. Bunney
- Department of Psychiatry & Human Behavior, University of California, Irvine, CA, USA
| | - Megan E. Williams
- Department of Neurobiology and Anatomy, University of Utah School of Medicine, UT, USA
| | - Hilary Coon
- Department of Psychiatry, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Marquis P. Vawter
- Functional Genomics Laboratory, Department of Psychiatry & Human Behavior, University of California, Irvine, CA, USA
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17
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Kouter K, Zupanc T, Videtič Paska A. Targeted sequencing approach: Comprehensive analysis of DNA methylation and gene expression across blood and brain regions in suicide victims. World J Biol Psychiatry 2023; 24:12-23. [PMID: 35200087 DOI: 10.1080/15622975.2022.2046291] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVES Epigenetic mechanisms are involved in regulation of many pathologies, including suicidal behaviour. However, the factors through which epigenetics affect suicidal behaviour are not fully understood. METHODS We analysed DNA methylation of eight neuropsychiatric genes (NR3C1, SLC6A4, HTR1A, TPH2, SKA2, MAOA, GABRA1, and NRIP3) in brain regions (hippocampus, insula, amygdala, Brodmann area 46) and blood of 25 male suicide victims and 28 male control subjects, using bisulphite next-generation sequencing. RESULTS Comparing mean methylation values, notable changes were observed in NR3C1 (insula p-value = 0.05), HTR1A (insula p-value < 0.001, blood p-value = 0.001), SKA2 (insula p-value = 0.03, blood p-value = 0.016), MAOA (blood p-value < 0.001), GABRA1 (insula p-value = 0.05, blood p-value = 0.024) and NRIP3 (hippocampus p-value = 0.001, insula p-value = 0.002, amygdala p-value = 0.014). Comparing methylation pattern between blood and brain, similarity was observed between blood and insula for HTR1A. Gene expression analysis in hippocampus revealed changes in expression of NR3C1 (p-value = 0.049), SLC6A4 (p-value = 0.017) and HTR1A (p-value = 0.053). CONCLUSIONS Results provide an insight into the altered state of DNA methylation in suicidal behaviour. Epigenetic differences could therefore affect suicidal behaviour in both previously known and in novel neuropsychiatric candidate genes.
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Affiliation(s)
- Katarina Kouter
- Institute of Biochemistry and Molecular Genetics, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Tomaž Zupanc
- Institute of Forensic Medicine, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Alja Videtič Paska
- Institute of Biochemistry and Molecular Genetics, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
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18
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Bhatt S, Devadoss T, Jha NK, Baidya M, Gupta G, Chellappan DK, Singh SK, Dua K. Targeting inflammation: a potential approach for the treatment of depression. Metab Brain Dis 2023; 38:45-59. [PMID: 36239867 DOI: 10.1007/s11011-022-01095-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 09/29/2022] [Indexed: 02/03/2023]
Abstract
Major depressive disorder (MDD) or Depression is one of the serious neuropsychiatric disorders affecting over 280 million people worldwide. It is 4th important cause of disability, poor quality of life, and economic burden. Women are more affected with the depression as compared to men and severe depression can lead to suicide. Most of the antidepressants predominantly work through the modulation on the availability of monoaminergic neurotransmitter (NTs) levels in the synapse. Current antidepressants have limited efficacy and tolerability. Moreover, treatment resistant depression (TRD) is one of the main causes for failure of standard marketed antidepressants. Recently, inflammation has also emerged as a crucial factor in pathological progression of depression. Proinflammatory cytokine levels are increased in depressive patients. Antidepressant treatment may attenuate depression via modulation of pathways of inflammation, transformation in structure of brain, and synaptic plasticity. Hence, targeting inflammation may be emerged as an effective approach for the treatment of depression. The present review article will focus on the preclinical and clinical studies that targets inflammation. In addition, it also concentrates on the therapeutic approaches' that targets depression via influence on the inflammatory signaling pathways. Graphical abstract demonstrate the role of various factors in the progression and neuroinflammation, oxidative stress. It also exhibits the association of neuroinflammation, oxidative stress with depression.
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Affiliation(s)
- Shvetank Bhatt
- School of Pharmacy, Dr. Vishwanath Karad MIT World Peace University, Maharashtra, 411038, Pune, India.
| | - Thangaraj Devadoss
- Department of Pharmaceutical Chemistry, Shri Vile Parle Kelavani Mandal's Institute of Pharmacy, Mumbai Agra Highway, Maharashtra, 424001, Dhule, India
| | - Niraj Kumar Jha
- Department of Biotechnology, School of Engineering & Technology (SET), Sharda University, 201310, Greater Noida, Uttar Pradesh, India
| | - Moushumi Baidya
- Department of Pharmaceutical Technology, JIS University, 700109, Kolkata, West Bengal, India
- Department of Pharmaceutical Technology, Bharat Pharmaceutical Technology, 799130, Agartala, West Tripura, India
| | - Gaurav Gupta
- School of Pharmacy, Suresh Gyan Vihar University, Mahal Road, Jagatpura, Jaipur, India
- Department of Pharmacology, Saveetha Institute of Medical and Technical Sciences, Saveetha Dental College and Hospitals, Saveetha University, Chennai, India
- Uttaranchal Institute of Pharmaceutical Sciences, Uttaranchal University, 248007, Dehradun, India
| | - Dinesh Kumar Chellappan
- Department of Life Sciences, School of Pharmacy, International Medical University, Bukit Jalil, 57000, Kuala Lumpur, Malaysia
| | - Sachin Kumar Singh
- School of Pharmaceutical Sciences, Lovely Professional University, Jalandhar-Delhi G.T Road, Phagwara, Punjab, India
- Faculty of Health, Australian Research Centre in Complementary & Integrative Medicine, University of Technology Sydney, 2007, Ultimo, NSW, Australia
| | - Kamal Dua
- Faculty of Health, Australian Research Centre in Complementary & Integrative Medicine, University of Technology Sydney, 2007, Ultimo, NSW, Australia
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, 2007, Ultimo, NSW, Australia
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Coliță D, Coliță CI, Hermann DM, Coliță E, Doeppner TR, Udristoiu I, Popa-Wagner A. Therapeutic Use and Chronic Abuse of CNS Stimulants and Anabolic Drugs. Curr Issues Mol Biol 2022; 44:4902-4920. [PMID: 36286048 PMCID: PMC9600088 DOI: 10.3390/cimb44100333] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/11/2022] [Accepted: 10/12/2022] [Indexed: 11/29/2022] Open
Abstract
The available evidence suggests that affective disorders, such as depression and anxiety, increase risk for accelerated cognitive decline and late-life dementia in aging individuals. Behavioral neuropsychology studies also showed that cognitive decline is a central feature of aging impacting the quality of life. Motor deficits are common after traumatic brain injuries and stroke, affect subjective well-being, and are linked with reduced quality of life. Currently, restorative therapies that target the brain directly to restore cognitive and motor tasks in aging and disease are available. However, the very same drugs used for therapeutic purposes are employed by athletes as stimulants either to increase performance for fame and financial rewards or as recreational drugs. Unfortunately, most of these drugs have severe side effects and pose a serious threat to the health of athletes. The use of performance-enhancing drugs by children and teenagers has increased tremendously due to the decrease in the age of players in competitive sports and the availability of various stimulants in many forms and shapes. Thus, doping may cause serious health-threatening conditions including, infertility, subdural hematomas, liver and kidney dysfunction, peripheral edema, cardiac hypertrophy, myocardial ischemia, thrombosis, and cardiovascular disease. In this review, we focus on the impact of doping on psychopathological disorders, cognition, and depression. Occasionally, we also refer to chronic use of therapeutic drugs to increase physical performance and highlight the underlying mechanisms. We conclude that raising awareness on the health risks of doping in sport for all shall promote an increased awareness for healthy lifestyles across all generations.
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Affiliation(s)
- Daniela Coliță
- Doctoral School, University of Medicine and Pharmacy “Carol Davila”, 020276 Bucharest, Romania
| | - Cezar-Ivan Coliță
- Doctoral School, University of Medicine and Pharmacy “Carol Davila”, 020276 Bucharest, Romania
- Correspondence: (C.-I.C.); (I.U.); (A.P.-W.)
| | - Dirk M. Hermann
- Chair of Vascular Neurology, Dementia and Ageing, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany
| | - Eugen Coliță
- Doctoral School, University of Medicine and Pharmacy “Carol Davila”, 020276 Bucharest, Romania
| | - Thorsten R. Doeppner
- Department of Neurology, University Medical Center Göttingen, 37075 Gottingen, Germany
- Department of Neurology, University Hospital Giessen, 35394 Giessen, Germany
| | - Ion Udristoiu
- Department of Psychiatry, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
- Correspondence: (C.-I.C.); (I.U.); (A.P.-W.)
| | - Aurel Popa-Wagner
- Chair of Vascular Neurology, Dementia and Ageing, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany
- Department of Psychiatry, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
- Correspondence: (C.-I.C.); (I.U.); (A.P.-W.)
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Six Genes Associated with Lymphatic Metastasis in Colon Adenocarcinoma Linked to Prognostic Value and Tumor Immune Cell Infiltration. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:4304361. [PMID: 36072412 PMCID: PMC9444393 DOI: 10.1155/2022/4304361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 07/26/2022] [Accepted: 08/02/2022] [Indexed: 11/17/2022]
Abstract
Objective. The aim of the study is to explore the relationship between lymphatic metastasis genes, prognosis, and immune cell infiltration in patients with colon cancer. Methods. Based on the Cancer Genome Atlas Program (TCGA) database, differentially expressed genes and prognostic genes related to colon adenocarcinoma (COAD) lymphatic metastasis were screened and intersected. We used lasso and univariate Cox regression analysis to screen core genes and establish a preliminary prediction model. GO and KEGG enrichment analysis was used for lymphatic metastasis-related genes, and single GSEA was used for the final screening results. Finally, we evaluated the relationship between identified genes and immune cell infiltration. Results. A total of 1727 genes were differentially expressed between COAD patients with TNM stages of N0 and N1. After further screening, six core genes (RNU4-2, ZNF556, RNVU1-15, NSA2P6, RN7SL767P, and RN7SL473P) were obtained, and a preliminary prediction model was established, in which ZNF556 was a risk factor, and the rest were protective factors. Single GSEA showed that pathways such as systemic lupus erythematosus might play an important role in the initial lymphatic metastasis of COAD. GO and KEGG enrichment analysis of 1727 genes supported this result. Immune infiltration analysis showed that six genes were significantly correlated with T cell and NK cell families. Conclusion. Six core genes may affect COAD initial lymphatic metastasis through the systemic lupus erythematosus pathway and immune cell infiltration.
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Gonçalves de Andrade E, González Ibáñez F, Tremblay MÈ. Microglia as a Hub for Suicide Neuropathology: Future Investigation and Prevention Targets. Front Cell Neurosci 2022; 16:839396. [PMID: 35663424 PMCID: PMC9158339 DOI: 10.3389/fncel.2022.839396] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Accepted: 02/22/2022] [Indexed: 12/27/2022] Open
Abstract
Suicide is a complex public health challenge associated worldwide with one death every 40 s. Research advances in the neuropathology of suicidal behaviors (SB) have defined discrete brain changes which may hold the key to suicide prevention. Physiological differences in microglia, the resident immune cells of the brain, are present in post-mortem tissue samples of individuals who died by suicide. Furthermore, microglia are mechanistically implicated in the outcomes of important risk factors for SB, including early-life adversity, stressful life events, and psychiatric disorders. SB risk factors result in inflammatory and oxidative stress activities which could converge to microglial synaptic remodeling affecting susceptibility or resistance to SB. To push further this perspective, in this Review we summarize current areas of opportunity that could untangle the functional participation of microglia in the context of suicide. Our discussion centers around microglial state diversity in respect to morphology, gene and protein expression, as well as function, depending on various factors, namely brain region, age, and sex.
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Affiliation(s)
- Elisa Gonçalves de Andrade
- Neuroscience Graduate Program, Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
- Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
| | - Fernando González Ibáñez
- Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
- Axe Neurosciences, Centre de Recherche du CHU de Québec, Université Laval, Québec City, QC, Canada
| | - Marie-Ève Tremblay
- Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
- Axe Neurosciences, Centre de Recherche du CHU de Québec, Université Laval, Québec City, QC, Canada
- Department of Neurology and Neurosurgery, McGill University, Montréal, QC, Canada
- Department of Molecular Medicine, Université Laval, Québec City, QC, Canada
- Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, BC, Canada
- Centre for Advanced Materials and Related Technology (CAMTEC), University of Victoria, Victoria, BC, Canada
- *Correspondence: Marie-Ève Tremblay,
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Zhang Y, Wang M, Zhang X, Jiang Z, Zhang Y, Fu X, Li Y, Cao D, Han J, Tong J. Helicid Improves Lipopolysaccharide-Induced Apoptosis of C6 Cells by Regulating SH2D5 DNA Methylation via the CytC/Caspase9/Caspase3 Signaling Pathway. CONTRAST MEDIA & MOLECULAR IMAGING 2022; 2022:9242827. [PMID: 35173561 PMCID: PMC8820944 DOI: 10.1155/2022/9242827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 12/30/2021] [Accepted: 01/10/2022] [Indexed: 11/25/2022]
Abstract
DNA methylation is reportedly associated with stress responses and depression. Treatment with antidepressants can regulate DNA methylation and, subsequently, gene expression in the hippocampus. Hence, DNA methylation is a potential target for treatment of depression. Screening of high-throughput data of a rat model of chronic unpredictable mild stress revealed relatively low expression of SH2 domain-containing 5 (SH2D5). SH2D5 can be overexpressed by treatment with helicid. Therefore, in order to further explore the role of SH2D5 in depression and whether helicid mediates the DNA methylation of SH2D5 as a potential antidepressant role, SH2D5 was overexpressed in C6 cells as a lipopolysaccharides (LPS)-induced model of depression. The expression levels of Bax, Bcl-2, Bad, and Daxx, and changes to the CytC/caspase9/caspase3 signal pathway were detected by qRT-PCR and Western blot analyses. After treatment with helicid or silencing of SH2D5, the above indices were detected. The results showed that helicid regulated the CytC/caspase9/caspase3 signaling pathway and improved the apoptosis indices of C6 cells through the overexpression of SH2D5. Interestingly, silencing of SH2D5 reversed the effects of helicid on the above indices. Then, in order to study the underlying mechanism, the cells were administered to helicid or 5-aza-2'-deoxycytidine (5-AzaD) and expression of SH2D5 was detected by qRT-PCR and Western blot analyses, while to assess the DNA methylation level of SH2D5 using bisulfite sequencing/PCR. The results showed that SH2D5 was hypermethylated with low expression in LPS-induced C6 cells, which was reversed by helicid and 5-AzaD. These results suggest that helicid may affect the CytC/caspase9/caspase3 apoptosis signaling pathway and improve the apoptosis indices by mediating DNA methylation of SH2D5.
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Affiliation(s)
- Yuan Zhang
- The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, Wuhu 241001, Anhui, China
- Wannan Medical College, Wuhu 241002, Anhui, China
| | - Mei Wang
- The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, Wuhu 241001, Anhui, China
- Wannan Medical College, Wuhu 241002, Anhui, China
| | - Xiaotong Zhang
- The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, Wuhu 241001, Anhui, China
- Wannan Medical College, Wuhu 241002, Anhui, China
| | - Zhenyi Jiang
- The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, Wuhu 241001, Anhui, China
- Wannan Medical College, Wuhu 241002, Anhui, China
| | | | - Xiangjun Fu
- The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, Wuhu 241001, Anhui, China
- Wannan Medical College, Wuhu 241002, Anhui, China
| | - Yanna Li
- The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, Wuhu 241001, Anhui, China
- Wannan Medical College, Wuhu 241002, Anhui, China
| | - Danping Cao
- The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, Wuhu 241001, Anhui, China
- Wannan Medical College, Wuhu 241002, Anhui, China
| | - Jun Han
- Wannan Medical College, Wuhu 241002, Anhui, China
- Anhui Provincial Engineering Laboratory for Screening and Re-evaluation of Active Compounds of Herbal Medicines, Southern Anhui, Wuhu 241002, Anhui, China
| | - Jiucui Tong
- The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, Wuhu 241001, Anhui, China
- Anhui Provincial Engineering Laboratory for Screening and Re-evaluation of Active Compounds of Herbal Medicines, Southern Anhui, Wuhu 241002, Anhui, China
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Liu C, Pan W, Zhu D, Meng F, Tian T, Li L, Li X. Factors of suicidal behavior among inpatients with major depressive disorder: A retrospective case series. Front Psychiatry 2022; 13:996402. [PMID: 36213915 PMCID: PMC9537680 DOI: 10.3389/fpsyt.2022.996402] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Accepted: 09/07/2022] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE Previous studies indicate that more than half of those who died by suicide had a depressive disorder. When discussing the factors associated to suicidal behavior (SB) among patients with major depressive disorder (MDD), sociocultural contexts should also be carefully considered. This case series study explored the factors correlated to SB among MDD patients in Beijing, China. METHODS The patient information sheets were retrieved from an electronic database that comprised patient medical information. Three forms of binary logistic regression equations were conducted to explore the factors associated to SB among patients with MDD. For the inconsistent variables produced by the three regression models, the propensity score matching (PSM) analysis was done for further verification. RESULTS In this retrospective study, 1,091 depressed cases were enrolled. The difference between the SB group and non-SB group in gender, impulsivity, the severity of depression, history of major mental trauma, and family history of suicide were statistically significant in univariate comparisons (P < 0.05); the binary logistic regression analysis and the PSM analysis showed that female gender, history of major mental trauma, impulsivity, family history of suicide and severity of depression were factors correlated to SB among patients with MDD (odds ratios >1). CONCLUSIONS Female gender, the history of major mental trauma, impulsivity, the severity of depression, and family history of suicide were independently associated with the appearance of SB among MDD patients in Beijing, China. Inevitably, these findings should be viewed with particular caution due to the inherent drawbacks of a retrospective nature. More prospective longitudinal research should be conducted to examine those dynamic alterations in the corresponding confounders.
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Affiliation(s)
- Chaomeng Liu
- The National Clinical Research Center for Mental Disorders and Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing, China.,Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
| | - Weigang Pan
- The National Clinical Research Center for Mental Disorders and Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing, China.,Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
| | - Dandi Zhu
- The National Clinical Research Center for Mental Disorders and Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing, China.,Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
| | - Fanqiang Meng
- The National Clinical Research Center for Mental Disorders and Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing, China.,Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
| | - Tengfei Tian
- The National Clinical Research Center for Mental Disorders and Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing, China.,Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
| | - Li Li
- The National Clinical Research Center for Mental Disorders and Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing, China.,Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
| | - Xiaohong Li
- The National Clinical Research Center for Mental Disorders and Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing, China.,Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
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Hippocampal neuropathology in suicide: Gaps in our knowledge and opportunities for a breakthrough. Neurosci Biobehav Rev 2021; 132:542-552. [PMID: 34906612 DOI: 10.1016/j.neubiorev.2021.12.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 12/03/2021] [Accepted: 12/10/2021] [Indexed: 01/27/2023]
Abstract
Suicide is a major global hazard. There is a need for increasing suicide awareness and effective and evidence-based interventions, targeting both suicidal ideation and conduct. However, anti-suicide pharmacological effects are unsatisfactory. The human hippocampus is vulnerable to neuropsychiatric damages and subsequently releases psychobiological signals. Human hippocampal studies of suicide completers have shown mechanistic changes in neurobiology, which, however, could not reflect the neuropathological 'fingerprints' of fatal suicide ideations and suicide attempts. In this review, we provide several leading theories of suicide, including the serotoninergic system, Wnt pathway and brain-derived neurotrophic factor/tropomyosin receptor kinase B signalling, and discuss the evidence for their roles in suicide and treatment. Moreover, the cognitive dysfunctions associated with suicide risk are discussed, as well as the novel evidence on cognitive therapies that decrease suicidal ideation. We highlight the need to apply multi-omics techniques (including single-nucleus RNA sequencing and mass spectrometry histochemistry) on hippocampal samples from donors who died by suicide or legal euthanasia, to clarify the aetiology of suicide and propose novel therapeutic strategies.
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