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Boucherie C, Alkailani M, Jossin Y, Ruiz-Reig N, Mahdi A, Aldaalis A, Aittaleb M, Tissir F. Auts2 enhances neurogenesis and promotes expansion of the cerebral cortex. J Adv Res 2024:S2090-1232(24)00296-0. [PMID: 39013538 DOI: 10.1016/j.jare.2024.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 12/28/2023] [Accepted: 07/13/2024] [Indexed: 07/18/2024] Open
Abstract
INTRODUCTION The AUTS2 gene is associated with various neurodevelopmental and psychiatric disorders and has been suggested to play a role in acquiring human-specific traits. Functional analyses of Auts2 knockout mice have focused on postmitotic neurons, and the reported phenotypes do not faithfully recapitulate the whole spectrum of AUTS2-related human diseases. OBJECTIVE The objective of the study is to assess the role of AUTS2 in the biology of neural progenitor cells, cortical neurogenesis and expansion; and understand how its deregulation leads to neurological disorders. METHODS We screened the literature and conducted a time point analysis of AUTS2 expression during cortical development. We used in utero electroporation to acutely modulate the expression level of AUTS2 in the developing cerebral cortex in vivo, and thoroughly characterized cortical neurogenesis and morphogenesis using immunofluorescence, cell tracing and sorting, transcriptomic profiling, and gene ontology enrichment analyses. RESULTS In addition to its expression in postmitotic neurons, we showed that AUTS2 is also expressed in neural progenitor cells at the peak of neurogenesis. Upregulation of AUTS2 dramatically altered the differentiation program and fate determination of cortical progenitors. Notably, it increased the number of basal progenitors and neurons and changed the expression of hundreds of genes, among which 444 have not been implicated in mouse brain development or function. CONCLUSION The study provides evidence that AUTS2 is expressed in germinal zones and plays a key role in fate decision of neural progenitor cells with impact on corticogenesis. It also presents comprehensive lists of AUTS2 target genes thus advancing the molecular mechanisms underlying AUTS2-associated diseases and the evolutionary expansion of the cerebral cortex.
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Affiliation(s)
- Cédric Boucherie
- Université Catholique de Louvain, Institute of Neuroscience, Developmental Neurobiology, Avenue Mounier 73, Box B1.73.16, Brussels, Belgium
| | - Maisa Alkailani
- Hamad Bin Khalifa University, College of Health and Life Sciences, Doha, Qatar
| | - Yves Jossin
- Université Catholique de Louvain, Institute of Neuroscience, Developmental Neurobiology, Avenue Mounier 73, Box B1.73.16, Brussels, Belgium
| | - Nuria Ruiz-Reig
- Université Catholique de Louvain, Institute of Neuroscience, Developmental Neurobiology, Avenue Mounier 73, Box B1.73.16, Brussels, Belgium
| | - Asma Mahdi
- Hamad Bin Khalifa University, College of Health and Life Sciences, Doha, Qatar
| | - Arwa Aldaalis
- Hamad Bin Khalifa University, College of Health and Life Sciences, Doha, Qatar
| | - Mohamed Aittaleb
- Hamad Bin Khalifa University, College of Health and Life Sciences, Doha, Qatar
| | - Fadel Tissir
- Université Catholique de Louvain, Institute of Neuroscience, Developmental Neurobiology, Avenue Mounier 73, Box B1.73.16, Brussels, Belgium; Hamad Bin Khalifa University, College of Health and Life Sciences, Doha, Qatar.
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Paschell P, Laukaitis C. Significant phenotypic variability in a multigenerational family with an NFIA missense mutation: Case series and review of the literature. Clin Case Rep 2024; 12:e8307. [PMID: 38188845 PMCID: PMC10769898 DOI: 10.1002/ccr3.8307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 11/09/2023] [Accepted: 11/18/2023] [Indexed: 01/09/2024] Open
Abstract
We report the first multigenerational family with NFIA-related disorder from a missense variant. This case highlights the condition's phenotypic variability and the need for genetic testing when an initial diagnosis fails to explain all symptoms.
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Affiliation(s)
- Peyton Paschell
- Carle Illinois College of MedicineUniversity of Illinois at Urbana‐ChampaignUrbanaIllinoisUSA
| | - Christina Laukaitis
- Carle Illinois College of MedicineUniversity of Illinois at Urbana‐ChampaignUrbanaIllinoisUSA
- Carle Foundation HospitalUrbanaIllinoisUSA
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Mundy J, Hübel C, Adey BN, Davies HL, Davies MR, Coleman JRI, Hotopf M, Kalsi G, Lee SH, McIntosh AM, Rogers HC, Eley TC, Murray RM, Vassos E, Breen G. Genetic examination of the Mood Disorder Questionnaire and its relationship with bipolar disorder. Am J Med Genet B Neuropsychiatr Genet 2023; 192:147-160. [PMID: 37178379 PMCID: PMC10952822 DOI: 10.1002/ajmg.b.32938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 02/18/2023] [Accepted: 04/15/2023] [Indexed: 05/15/2023]
Abstract
The Mood Disorder Questionnaire (MDQ) is a common screening tool for bipolar disorder that assesses manic symptoms. Its utility for genetic studies of mania or bipolar traits has not been fully examined. We psychometrically compared the MDQ to self-reported bipolar disorder in participants from the United Kingdom National Institute of Health and Care Research Mental Health BioResource. We conducted genome-wide association studies of manic symptom quantitative traits and symptom subgroups, derived from the MDQ items (N = 11,568-19,859). We calculated genetic correlations with bipolar disorder and other psychiatric and behavioral traits. The MDQ screener showed low positive predictive value (0.29) for self-reported bipolar disorder. Neither concurrent nor lifetime manic symptoms were genetically correlated with bipolar disorder. Lifetime manic symptoms had a highest genetic correlation (rg = 1.0) with posttraumatic stress disorder although this was not confirmed by within-cohort phenotypic correlations (rp = 0.41). Other significant genetic correlations included attention deficit hyperactivity disorder (rg = 0.69), insomnia (rg = 0.55), and major depressive disorder (rg = 0.42). Our study adds to existing literature questioning the MDQ's validity and suggests it may capture symptoms of general distress or psychopathology, rather than hypomania/mania specifically, in at-risk populations.
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Affiliation(s)
- Jessica Mundy
- Institute of Psychiatry, Psychology and Neuroscience, King's College LondonLondonUK
- UK National Institute for Health and Care Research (NIHR) Biomedical Research CentreSouth London and Maudsley HospitalLondonUK
| | - Christopher Hübel
- Institute of Psychiatry, Psychology and Neuroscience, King's College LondonLondonUK
- UK National Institute for Health and Care Research (NIHR) Biomedical Research CentreSouth London and Maudsley HospitalLondonUK
- National Centre for Register‐based Research, Aarhus Business and Social SciencesAarhus UniversityAarhusDenmark
| | - Brett N. Adey
- Institute of Psychiatry, Psychology and Neuroscience, King's College LondonLondonUK
- UK National Institute for Health and Care Research (NIHR) Biomedical Research CentreSouth London and Maudsley HospitalLondonUK
| | - Helena L. Davies
- Institute of Psychiatry, Psychology and Neuroscience, King's College LondonLondonUK
- UK National Institute for Health and Care Research (NIHR) Biomedical Research CentreSouth London and Maudsley HospitalLondonUK
| | - Molly R. Davies
- Institute of Psychiatry, Psychology and Neuroscience, King's College LondonLondonUK
- UK National Institute for Health and Care Research (NIHR) Biomedical Research CentreSouth London and Maudsley HospitalLondonUK
| | - Jonathan R. I. Coleman
- Institute of Psychiatry, Psychology and Neuroscience, King's College LondonLondonUK
- UK National Institute for Health and Care Research (NIHR) Biomedical Research CentreSouth London and Maudsley HospitalLondonUK
| | - Matthew Hotopf
- Institute of Psychiatry, Psychology and Neuroscience, King's College LondonLondonUK
- UK National Institute for Health and Care Research (NIHR) Biomedical Research CentreSouth London and Maudsley HospitalLondonUK
- South London and Maudsley NHS Foundation TrustBethlem Royal HospitalKentUK
| | - Gursharan Kalsi
- Institute of Psychiatry, Psychology and Neuroscience, King's College LondonLondonUK
- UK National Institute for Health and Care Research (NIHR) Biomedical Research CentreSouth London and Maudsley HospitalLondonUK
| | - Sang Hyuck Lee
- Institute of Psychiatry, Psychology and Neuroscience, King's College LondonLondonUK
- UK National Institute for Health and Care Research (NIHR) Biomedical Research CentreSouth London and Maudsley HospitalLondonUK
| | - Andrew M. McIntosh
- Division of Psychiatry, Centre for Clinical Brain SciencesUniversity of EdinburghEdinburghUK
| | - Henry C. Rogers
- Institute of Psychiatry, Psychology and Neuroscience, King's College LondonLondonUK
- UK National Institute for Health and Care Research (NIHR) Biomedical Research CentreSouth London and Maudsley HospitalLondonUK
| | - Thalia C. Eley
- Institute of Psychiatry, Psychology and Neuroscience, King's College LondonLondonUK
- UK National Institute for Health and Care Research (NIHR) Biomedical Research CentreSouth London and Maudsley HospitalLondonUK
| | - Robin M. Murray
- Institute of Psychiatry, Psychology and Neuroscience, King's College LondonLondonUK
| | - Evangelos Vassos
- Institute of Psychiatry, Psychology and Neuroscience, King's College LondonLondonUK
- UK National Institute for Health and Care Research (NIHR) Biomedical Research CentreSouth London and Maudsley HospitalLondonUK
| | - Gerome Breen
- Institute of Psychiatry, Psychology and Neuroscience, King's College LondonLondonUK
- UK National Institute for Health and Care Research (NIHR) Biomedical Research CentreSouth London and Maudsley HospitalLondonUK
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Colijn MA, Hrynchak M, Hrazdil CT, Willaeys V, White RF, Stowe RM. A 1p31.3 deletion encompassing the nuclear factor 1A gene presenting as possible temporal lobe epilepsy in association with schizoaffective disorder. Neurocase 2022; 28:382-387. [PMID: 36209511 DOI: 10.1080/13554794.2022.2132869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/10/2022]
Abstract
Chromosome 1p32-p31 deletion syndrome, which is characterized by a variety of neurodevelopmental abnormalities, is thought to occur as a result of nuclear factor 1A (NFIA) haploinsufficiency. We present a case of a right-handed 40-year-old female with a 1p31.3 deletion, who exhibited numerous common features of this syndrome, in addition to treatment resistant schizoaffective disorder and possible temporal lobe epilepsy, making her presentation unique. While neither psychosis nor temporal lobe epilepsy has been described in this syndrome previously, these conditions likely occurred in our patient as a result of NFIA haploinsufficiency.
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Affiliation(s)
- Mark A Colijn
- Department of Psychiatry, The University of Calgary, Calgary, AB, Canada
| | - Monica Hrynchak
- Molecular Cytogenetic Laboratory, Royal Columbian Hospital, The University of British Columbia, New Westminster, BC, Canada
| | - Chantelle T Hrazdil
- Division of Neurology, Department of Medicine, The University of British Columbia, Vancouver, BC, Canada
| | - Veerle Willaeys
- BC Psychosis Program, British Columbia Mental Health & Substance Use Services, Vancouver, BC, Canada
| | - Randall F White
- BC Psychosis Program, British Columbia Mental Health & Substance Use Services, Vancouver, BC, Canada.,Department of Psychiatry, The University of British Columbia, Vancouver, BC, Canada
| | - Robert M Stowe
- BC Neuropsychiatry Program, Departments of Psychiatry and Neurology (Medicine), and Djavad Mowafaghian Centre for Brain Health, The University of British Columbia, Vancouver, BC, Canada
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O'Connell KS, Coombes BJ. Genetic contributions to bipolar disorder: current status and future directions. Psychol Med 2021; 51:2156-2167. [PMID: 33879273 PMCID: PMC8477227 DOI: 10.1017/s0033291721001252] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 03/12/2021] [Accepted: 03/19/2021] [Indexed: 12/12/2022]
Abstract
Bipolar disorder (BD) is a highly heritable mental disorder and is estimated to affect about 50 million people worldwide. Our understanding of the genetic etiology of BD has greatly increased in recent years with advances in technology and methodology as well as the adoption of international consortiums and large population-based biobanks. It is clear that BD is also highly heterogeneous and polygenic and shows substantial genetic overlap with other psychiatric disorders. Genetic studies of BD suggest that the number of associated loci is expected to substantially increase in larger future studies and with it, improved genetic prediction of the disorder. Still, a number of challenges remain to fully characterize the genetic architecture of BD. First among these is the need to incorporate ancestrally-diverse samples to move research away from a Eurocentric bias that has the potential to exacerbate health disparities already seen in BD. Furthermore, incorporation of population biobanks, registry data, and electronic health records will be required to increase the sample size necessary for continued genetic discovery, while increased deep phenotyping is necessary to elucidate subtypes within BD. Lastly, the role of rare variation in BD remains to be determined. Meeting these challenges will enable improved identification of causal variants for the disorder and also allow for equitable future clinical applications of both genetic risk prediction and therapeutic interventions.
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Affiliation(s)
- Kevin S. O'Connell
- Division of Mental Health and Addiction, NORMENT Centre, Institute of Clinical Medicine, University of Oslo, Oslo University Hospital, 0407Oslo, Norway
| | - Brandon J. Coombes
- Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota, USA
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Erotomania and phenotypic continuum in a family frameshift variant of AUTS2: a case report and review. BMC Psychiatry 2021; 21:360. [PMID: 34273950 PMCID: PMC8285776 DOI: 10.1186/s12888-021-03342-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 06/25/2021] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Pathogenic variants of the AUTS2 (Autism Susceptibility candidate 2) gene predispose to intellectual disability, autism spectrum disorder, attention deficit hyperactivity disorder, facial dysmorphism and short stature. This phenotype is therefore associated with neurocognitive disturbances and social cognition, indicating potential functional maladjustment in the affected subjects, and a potentially significant impact on quality of life. Although many isolated cases have been reported in the literature, to date no families have been described. This case reports on a family (three generations) with a frameshift variant in the AUTS2 gene. CASE PRESENTATION The proband is 13 years old with short stature, dysmorphic features, moderate intellectual disability and autism spectrum disorder. His mother is 49 years old and also has short stature and similar dysmorphic features. She does not have autism disorder but presents an erotomaniac delusion. Her cognitive performance is heterogeneous. The two aunts are also of short stature. The 50-year-old aunt has isolated social cognition disorders. The 45-year-old aunt has severe cognitive impairment and autism spectrum disorder. The molecular analysis of the three sisters and the proband shows the same AUTS2 heterozygous duplication leading to a frame shift expected to produce a premature stop codon, p.(Met593Tyrfs*85). Previously reported isolated cases revealed phenotypic and cognitive impairment variability. In this case report, these variabilities are present within the same family, presenting the same variant. CONCLUSIONS The possibility of a phenotypic spectrum within the same family highlights the need for joint psychiatry and genetics research.
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7
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Circadian depression: A mood disorder phenotype. Neurosci Biobehav Rev 2021; 126:79-101. [PMID: 33689801 DOI: 10.1016/j.neubiorev.2021.02.045] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 02/18/2021] [Accepted: 02/28/2021] [Indexed: 12/15/2022]
Abstract
Major mood syndromes are among the most common and disabling mental disorders. However, a lack of clear delineation of their underlying pathophysiological mechanisms is a major barrier to prevention and optimised treatments. Dysfunction of the 24-h circadian system is a candidate mechanism that has genetic, behavioural, and neurobiological links to mood syndromes. Here, we outline evidence for a new clinical phenotype, which we have called 'circadian depression'. We propose that key clinical characteristics of circadian depression include disrupted 24-h sleep-wake cycles, reduced motor activity, low subjective energy, and weight gain. The illness course includes early age-of-onset, phenomena suggestive of bipolarity (defined by bidirectional associations between objective motor and subjective energy/mood states), poor response to conventional antidepressant medications, and concurrent cardiometabolic and inflammatory disturbances. Identifying this phenotype could be clinically valuable, as circadian-targeted strategies show promise for reducing depressive symptoms and stabilising illness course. Further investigation of underlying circadian disturbances in mood syndromes is needed to evaluate the clinical utility of this phenotype and guide the optimal use of circadian-targeted interventions.
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8
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Kim BH, Nho K, Lee JM. Genome-wide association study identifies susceptibility loci of brain atrophy to NFIA and ST18 in Alzheimer's disease. Neurobiol Aging 2021; 102:200.e1-200.e11. [PMID: 33640202 DOI: 10.1016/j.neurobiolaging.2021.01.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 01/08/2021] [Accepted: 01/25/2021] [Indexed: 02/04/2023]
Abstract
To identify genetic variants influencing cortical atrophy in Alzheimer's disease (AD), we performed genome-wide association studies (GWAS) of mean cortical thicknesses in 17 AD-related brain. In this study, we used neuroimaging and genetic data of 919 participants from the Alzheimer's Disease Neuroimaging Initiative cohort, which include 268 cognitively normal controls, 488 mild cognitive impairment, 163 AD individuals. We performed GWAS with 3,041,429 single nucleotide polymorphisms (SNPs) for cortical thickness. The results of GWAS indicated that rs10109716 in ST18 (ST18 C2H2C-type zinc finger transcription factor) and rs661526 in NFIA (nuclear factor I A) genes are significantly associated with mean cortical thicknesses of the left inferior frontal gyrus and left parahippocampal gyrus, respectively. The rs661526 regulates the expression levels of NFIA in the substantia nigra and frontal cortex and rs10109716 regulates the expression levels of ST18 in the thalamus. These results suggest a crucial role of identified genes for cortical atrophy and could provide further insights into the genetic basis of AD.
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Affiliation(s)
- Bo-Hyun Kim
- Department of Biomedical Engineering, Hanyang University, Seoul, Korea
| | - Kwangsik Nho
- Department of Radiology and Imaging Sciences, Indiana Alzheimer Disease Center, Indiana University School of Medicine, Indianapolis, IN, USA.
| | - Jong-Min Lee
- Department of Biomedical Engineering, Hanyang University, Seoul, Korea.
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Liu B, Jiao L, Chai J, Bao C, Jiang P, Li Y. Encapsulation and Targeted Release. Food Hydrocoll 2021. [DOI: 10.1007/978-981-16-0320-4_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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10
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Morris J, Leung SSY, Bailey ME, Cullen B, Ferguson A, Graham N, Johnston KJA, Lyall DM, Lyall LM, Ward J, Smith DJ, Strawbridge RJ. Exploring the Role of Contactins across Psychological, Psychiatric and Cardiometabolic Traits within UK Biobank. Genes (Basel) 2020; 11:E1326. [PMID: 33182605 PMCID: PMC7697406 DOI: 10.3390/genes11111326] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/05/2020] [Accepted: 11/07/2020] [Indexed: 12/17/2022] Open
Abstract
Individuals with severe mental illness have an increased risk of cardiometabolic diseases compared to the general population. Shared risk factors and medication effects explain part of this excess risk; however, there is growing evidence to suggest that shared biology (including genetic variation) is likely to contribute to comorbidity between mental and physical illness. Contactins are a family of genes involved in development of the nervous system and implicated, though genome-wide association studies, in a wide range of psychological, psychiatric and cardiometabolic conditions. Contactins are plausible candidates for shared pathology between mental and physical health. We used data from UK Biobank to systematically assess how genetic variation in contactin genes was associated with a wide range of psychological, psychiatric and cardiometabolic conditions. We also investigated whether associations for cardiometabolic and psychological traits represented the same or distinct signals and how the genetic variation might influence the measured traits. We identified: A novel genetic association between variation in CNTN1 and current smoking; two independent signals in CNTN4 for BMI; and demonstrated that associations between CNTN5 and neuroticism were distinct from those between CNTN5 and blood pressure/HbA1c. There was no evidence that the contactin genes contributed to shared aetiology between physical and mental illness.
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Affiliation(s)
- Julia Morris
- Institute of Health and Wellbeing, University of Glasgow, Glasgow G12 8RZ, UK; (J.M.); (S.S.Y.L.); (B.C.); (A.F.); (N.G.); (K.J.A.J.); (D.M.L.); (L.M.L.); (J.W.); (D.J.S.)
| | - Soddy Sau Yu Leung
- Institute of Health and Wellbeing, University of Glasgow, Glasgow G12 8RZ, UK; (J.M.); (S.S.Y.L.); (B.C.); (A.F.); (N.G.); (K.J.A.J.); (D.M.L.); (L.M.L.); (J.W.); (D.J.S.)
| | - Mark E.S. Bailey
- School of Life Sciences, College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK;
| | - Breda Cullen
- Institute of Health and Wellbeing, University of Glasgow, Glasgow G12 8RZ, UK; (J.M.); (S.S.Y.L.); (B.C.); (A.F.); (N.G.); (K.J.A.J.); (D.M.L.); (L.M.L.); (J.W.); (D.J.S.)
| | - Amy Ferguson
- Institute of Health and Wellbeing, University of Glasgow, Glasgow G12 8RZ, UK; (J.M.); (S.S.Y.L.); (B.C.); (A.F.); (N.G.); (K.J.A.J.); (D.M.L.); (L.M.L.); (J.W.); (D.J.S.)
| | - Nicholas Graham
- Institute of Health and Wellbeing, University of Glasgow, Glasgow G12 8RZ, UK; (J.M.); (S.S.Y.L.); (B.C.); (A.F.); (N.G.); (K.J.A.J.); (D.M.L.); (L.M.L.); (J.W.); (D.J.S.)
| | - Keira J. A. Johnston
- Institute of Health and Wellbeing, University of Glasgow, Glasgow G12 8RZ, UK; (J.M.); (S.S.Y.L.); (B.C.); (A.F.); (N.G.); (K.J.A.J.); (D.M.L.); (L.M.L.); (J.W.); (D.J.S.)
- School of Life Sciences, College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK;
- Deanery of Molecular, Genetic and Population Health Sciences, College of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh EH8 9AG, UK
| | - Donald M. Lyall
- Institute of Health and Wellbeing, University of Glasgow, Glasgow G12 8RZ, UK; (J.M.); (S.S.Y.L.); (B.C.); (A.F.); (N.G.); (K.J.A.J.); (D.M.L.); (L.M.L.); (J.W.); (D.J.S.)
| | - Laura M. Lyall
- Institute of Health and Wellbeing, University of Glasgow, Glasgow G12 8RZ, UK; (J.M.); (S.S.Y.L.); (B.C.); (A.F.); (N.G.); (K.J.A.J.); (D.M.L.); (L.M.L.); (J.W.); (D.J.S.)
| | - Joey Ward
- Institute of Health and Wellbeing, University of Glasgow, Glasgow G12 8RZ, UK; (J.M.); (S.S.Y.L.); (B.C.); (A.F.); (N.G.); (K.J.A.J.); (D.M.L.); (L.M.L.); (J.W.); (D.J.S.)
| | - Daniel J. Smith
- Institute of Health and Wellbeing, University of Glasgow, Glasgow G12 8RZ, UK; (J.M.); (S.S.Y.L.); (B.C.); (A.F.); (N.G.); (K.J.A.J.); (D.M.L.); (L.M.L.); (J.W.); (D.J.S.)
| | - Rona J. Strawbridge
- Institute of Health and Wellbeing, University of Glasgow, Glasgow G12 8RZ, UK; (J.M.); (S.S.Y.L.); (B.C.); (A.F.); (N.G.); (K.J.A.J.); (D.M.L.); (L.M.L.); (J.W.); (D.J.S.)
- Health Data Research UK, Glasgow G12 8RZ, UK
- Cardiovascular Medicine Unit, Department of Medicine Solna, Karolinska Institutet, 171 77 Stockholm, Sweden
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Moolamalla STR, Vinod PK. Genome-scale metabolic modelling predicts biomarkers and therapeutic targets for neuropsychiatric disorders. Comput Biol Med 2020; 125:103994. [PMID: 32980779 DOI: 10.1016/j.compbiomed.2020.103994] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 09/06/2020] [Accepted: 09/07/2020] [Indexed: 01/06/2023]
Abstract
Distinguishing neuropsychiatric disorders is challenging due to the overlap in symptoms and genetic risk factors. People suffering from these disorders face personal and professional challenges. Understanding the dysregulation of brain metabolism under disease condition can aid in effective diagnosis and in developing treatment strategies based on the metabolism. In this study, we reconstructed the metabolic network of three major neuropsychiatric disorders, schizophrenia (SCZ), bipolar disorder (BD) and major depressive disorder (MDD) using transcriptomic data and constrained based modelling approach. We integrated brain transcriptomic data from six independent studies with a recent comprehensive genome-scale metabolic model Recon3D. The analysis of the reconstructed network revealed the flux-level alterations in the peroxisome-mitochondria-golgi axis in neuropsychiatric disorders. We also extracted reporter metabolites and pathways that distinguish these three neuropsychiatric disorders. We found differences with respect to fatty acid oxidation, aromatic and branched chain amino acid metabolism, bile acid synthesis, glycosaminoglycans synthesis and modifications, and phospholipid metabolism. Further, we predicted network perturbations that transform the disease metabolic state to a healthy metabolic state for each disorder. These analyses provide local and global views of the metabolic changes in SCZ, BD and MDD, which may have clinical implications.
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Affiliation(s)
- S T R Moolamalla
- Center for Computational Natural Sciences and Bioinformatics, International Institute of Information Technology, Hyderabad, 500032, India
| | - P K Vinod
- Center for Computational Natural Sciences and Bioinformatics, International Institute of Information Technology, Hyderabad, 500032, India.
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12
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Bame M, McInnis MG, O'Shea KS. MicroRNA Alterations in Induced Pluripotent Stem Cell-Derived Neurons from Bipolar Disorder Patients: Pathways Involved in Neuronal Differentiation, Axon Guidance, and Plasticity. Stem Cells Dev 2020; 29:1145-1159. [PMID: 32438891 PMCID: PMC7469698 DOI: 10.1089/scd.2020.0046] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Accepted: 05/21/2020] [Indexed: 12/17/2022] Open
Abstract
Bipolar disorder (BP) is a complex psychiatric condition characterized by severe fluctuations in mood for which underlying pathological mechanisms remain unclear. Family and twin studies have identified a hereditary component to the disorder, but a single causative gene (or set of genes) has not been identified. MicroRNAs (miRNAs) are small, noncoding RNAs ∼20 nucleotides in length, that are responsible for the posttranslational regulation of multiple genes. They have been shown to play important roles in neural development as well as in the adult brain, and several miRNAs have been reported to be dysregulated in postmortem brain tissue isolated from bipolar patients. Because there are no viable cellular models to study BP, we have taken advantage of the recent discovery that somatic cells can be reprogrammed to pluripotency then directed to form the full complement of neural cells. Analysis of RNAs extracted from Control and BP patient-derived neurons identified 58 miRNAs that were differentially expressed between the two groups. Using quantitative polymerase chain reaction we validated six miRNAs that were elevated and two miRNAs that were expressed at lower levels in BP-derived neurons. Analysis of the targets of the miRNAs indicate that they may regulate a number of cellular pathways, including axon guidance, Mapk, Ras, Hippo, Neurotrophin, and Wnt signaling. Many are involved in processes previously implicated in BP, such as cell migration, axon guidance, dendrite and synapse development, and function. We have validated targets of several different miRNAs, including AXIN2, BDNF, RELN, and ANK3 as direct targets of differentially expressed miRNAs using luciferase assays. Identification of pathways altered in patient-derived neurons suggests that disruption of these regulatory networks that may contribute to the complex phenotypes in BP.
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Affiliation(s)
- Monica Bame
- Department of Psychiatry, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Melvin G. McInnis
- Department of Psychiatry, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - K. Sue O'Shea
- Department of Psychiatry, University of Michigan Medical School, Ann Arbor, Michigan, USA
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, Michigan, USA
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13
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Zhang Z, Chen G. A logical relationship for schizophrenia, bipolar, and major depressive disorder. Part 1: Evidence from chromosome 1 high density association screen. J Comp Neurol 2020; 528:2620-2635. [PMID: 32266715 DOI: 10.1002/cne.24921] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 03/28/2020] [Accepted: 03/30/2020] [Indexed: 12/16/2022]
Abstract
Familial clustering of schizophrenia (SCZ), bipolar disorder (BPD), and major depressive disorder (MDD) was investigated systematically (Aukes et al., Genetics in Medicine, 2012, 14, 338-341) and any two or even three of these disorders could coexist in some families. Furthermore, evidence from symptomatology and psychopharmacology also imply the existence of intrinsic connections between these three major psychiatric disorders. A total of 71,445 SNPs on chromosome 1 were genotyped on 119 SCZ, 253 BPD (type-I), 177 MDD cases and 1000 controls and further validated in 986 SCZ patients in the population of Shandong province of China. Outstanding psychosis genes are systematically revealed( ATP1A4, ELTD1, FAM5C, HHAT, KIF26B, LMX1A, NEGR1, NFIA, NR5A2, NTNG1, PAPPA2, PDE4B, PEX14, RYR2, SYT6, TGFBR3, TTLL7, and USH2A). Unexpectedly, flanking genes for up to 97.09% of the associated SNPs were also replicated in an enlarged cohort of 986 SCZ patients. From the perspective of etiological rather than clinical psychiatry, bipolar, and major depressive disorder could be subtypes of schizophrenia. Meanwhile, the varied clinical feature and prognosis might be the result of interaction of genetics and epigenetics, for example, irreversible or reversible shut down, and over or insufficient expression of certain genes, which may gives other aspects of these severe mental disorders.
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Affiliation(s)
- Zhihua Zhang
- Shandong Mental Health Center, Jinan, Shandong, China
| | - Gang Chen
- Department of Medical Genetics, Institute of Basic Medicine, Shandong Academy of Medical Sciences, Jinan, Shandong, China
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14
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Abstract
PURPOSE OF REVIEW To better understand the shared basis of language and mental health, this review examines the behavioral and neurobiological features of aberrant language in five major neuropsychiatric conditions. Special attention is paid to genes implicated in both language and neuropsychiatric disorders, as they reveal biological domains likely to underpin the processes controlling both. RECENT FINDINGS Abnormal language and communication are common manifestations of neuropsychiatric conditions, and children with impaired language are more likely to develop psychiatric disorders than their peers. Major themes in the genetics of both language and psychiatry include master transcriptional regulators, like FOXP2; key developmental regulators, like AUTS2; and mediators of neurotransmission, like GRIN2A and CACNA1C.
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15
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Sun Y, Long H, Sun L, Sun X, Pang L, Chen J, Yi Q, Liang T, Shen Y. PGM5 is a promising biomarker and may predict the prognosis of colorectal cancer patients. Cancer Cell Int 2019; 19:253. [PMID: 31582909 PMCID: PMC6771116 DOI: 10.1186/s12935-019-0967-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 09/18/2019] [Indexed: 12/24/2022] Open
Abstract
Background Phosphoglucomutase (PGM), a key enzyme in the metabolism of glucose-1-phosphate and glucose-6-phosphate, has been found to be associated with proliferation, invasion, and metastasis of cancer. However, the expression and function of PGM5 in colorectal cancer (CRC) remains unknown. Methods We tested PGM5 mRNA and protein expression levels in 79 CRC tissue and their matched adjacent tissue samples by qRT-PCR and immunohistochemistry, respectively. Overall survival (OS) was estimated with the Kaplan-Meier method and compared between groups with the log-rank test. We performed multivariable Cox regression analyses to identify factors associated with CRC risk. The cell proliferation, migration and invasion abilities of CRC cells were detected by using CCK-8, Transwell migration and invasion assays, respectively. Results The PGM5 protein levels expression in CRC tissues were significantly lower than those in the adjacent tissues (t = 5.035, P < 0.001), and Kaplan-Meier analysis indicated that low PGM5 expression were significantly associated with poor overall survival (P = 0.0069). Univariate and multivariate analyses demonstrated that PGM5 was an independent risk factor for overall survival (hazard ratio = 0.3951, P = 0.014). PGM5 overexpression significantly inhibited the proliferation, invasion and migration abilities of CRC cells. On the contrary, knockdown of PGM5 promotes the invasion and migration of CRC cells. Conclusions PMG5 regulates proliferation, invasion, and migration in the CRC and decreased PGM5 is associated with poor prognosis. Therefore, PGM5 is a promising biomarker in CRC and decreased PGM5 may predict poor overall survival in patients with CRC.
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Affiliation(s)
- Yifan Sun
- Department of Clinical Laboratory, Liuzhou Municipal Liutie Central Hospital, Liuzhou, Guangxi China
| | - Haihua Long
- Department of Endoscopy, Liuzhou Municipal Liutie Central Hospital, Liuzhou, Guangxi China
| | - Lin Sun
- Department of Clinical Laboratory, Liuzhou Municipal Liutie Central Hospital, Liuzhou, Guangxi China
| | - Xiujuan Sun
- Department of Pathology, Liuzhou Municipal Liutie Central Hospital, Liuzhou, Guangxi China
| | - Liping Pang
- Department of Endoscopy, Liuzhou Municipal Liutie Central Hospital, Liuzhou, Guangxi China
| | - Jianlin Chen
- Department of Clinical Laboratory, Liuzhou Municipal Liutie Central Hospital, Liuzhou, Guangxi China
| | - Qingqun Yi
- Department of Gastroenterology, Liuzhou Municipal Liutie Central Hospital, Liuzhou, Guangxi China
| | - Tianwei Liang
- Department of Gastroenterology, Liuzhou Municipal Liutie Central Hospital, Liuzhou, Guangxi China
| | - Yongqi Shen
- Department of Oncology, Liuzhou Municipal Liutie Central Hospital, No.14 Fei-e Road, Liuzhou, 545007 Guangxi China
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16
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Voinsky I, McCarthy MJ, Shekhtman T, Kelsoe JR, Gurwitz D. SCN11A mRNA levels in female bipolar disorder PBMCs as tentative biomarker for distinct patient sub-phenotypes. Drug Dev Res 2019; 80:1128-1135. [PMID: 31498915 DOI: 10.1002/ddr.21598] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 08/20/2019] [Accepted: 08/20/2019] [Indexed: 01/12/2023]
Abstract
Bipolar disorder (BD) is a complex neuropsychiatric disorder characterized by recurrent mania and depression episodes and requiring lifelong treatment with mood stabilizing drugs. Several lines of evidence, including with BD patient iPSC-derived neurons, suggest that neuronal hyperexcitability may underlie the key clinical symptoms of BD. Indeed, higher mRNA levels of SCN11A, coding for the voltage-gated sodium channel NaV 1.9 implicated in nociception, were detected in iPSC-derived neurons from BD patients, and were normalized by in vitro lithium. Here we studied SCN11A expression in peripheral blood mononuclear cells (PBMCs) from well-phenotyped female BD patients and controls and evaluated their association with several clinical sub-phenotypes. We observed higher mRNA levels of SCN11A in PBMCs from female BD patients with no records of alcohol dependence (p = .0050), no records of psychosis (p = .0097), or no records of suicide attempts (p = .0409). A trend was observed for higher SCN11A expression (FD = 1.91; p = .052) in BD PBMCs compared with controls. Datamining of published postmortem gene expression datasets indicated higher SCN11A expression in dorsolateral prefrontal cortex and orbitofrontal cortex tissues from BD patients compared with controls. Higher phenotype-associated expression levels in PBMC from BD patients were also observed for ID2 (alcohol dependence, suicide attempts) and HDGFRP3 (seasonal BD pattern). Our findings suggest that higher PBMC SCN11A expression levels may be associated with certain behavioral BD sub-phenotypes, including lack of alcohol dependence and psychosis, among BD patients. The NaV 1.9 voltage-gated sodium channel thus deserves consideration as a tentative phenotype modifier in BD.
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Affiliation(s)
- Irena Voinsky
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv, Israel
| | - Michael J McCarthy
- Department of Psychiatry, University of California San Diego, La Jolla, California.,VA San Diego Healthcare System, San Diego, California
| | - Tatyana Shekhtman
- Department of Psychiatry, University of California San Diego, La Jolla, California
| | - John R Kelsoe
- Department of Psychiatry, University of California San Diego, La Jolla, California
| | - David Gurwitz
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv, Israel.,Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
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17
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Young JW, Cope ZA, Romoli B, Schrurs E, Aniek Joosen, van Enkhuizen J, Sharp RF, Dulcis D. Mice with reduced DAT levels recreate seasonal-induced switching between states in bipolar disorder. Neuropsychopharmacology 2018; 43. [PMID: 29520059 PMCID: PMC6006292 DOI: 10.1038/s41386-018-0031-y] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Developing novel therapeutics for bipolar disorder (BD) has been hampered by limited mechanistic knowledge how sufferers switch between mania and depression-how the same brain can switch between extreme states-described as the "holy grail" of BD research. Strong evidence implicates seasonally-induced switching between states, with mania associated with summer-onset, depression with winter-onset. Determining mechanisms of and sensitivity to such switching is required. C57BL/6J and dopamine transporter hypomorphic (DAT-HY 50% expression) mice performed a battery of psychiatry-relevant behavioral tasks following 2-week housing in chambers under seasonally relevant photoperiod extremes. Summer-like and winter-like photoperiod exposure induced mania-relevant and depression-relevant behaviors respectively in mice. This behavioral switch paralleled neurotransmitter switching from dopamine to somatostatin in hypothalamic neurons (receiving direct input from the photoperiod-processing center, the suprachiasmatic nucleus). Mice with reduced DAT expression exhibited hypersensitivity to these summer-like and winter-like photoperiods, including more extreme mania-relevant (including reward sensitivity during reinforcement learning), and depression-relevant (including punishment-sensitivity and loss-sensitivity during reinforcement learning) behaviors. DAT mRNA levels switched in wildtype littermate mice across photoperiods, an effect not replicated in DAT hypomorphic mice. This inability to adjust DAT levels to match photoperiod-induced neurotransmitter switching as a homeostatic control likely contributes to the susceptibility of DAT hypormophic mice to these switching photoperiods. These data reveal the potential contribution of photoperiod-induced neuroplasticity within an identified circuit of the hypothalamus, linked with reduced DAT function, underlying switching between states in BD. Further investigations of the circuit will likely identify novel therapeutic targets to block switching between states.
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Affiliation(s)
- Jared W. Young
- 0000 0001 2107 4242grid.266100.3Department of Psychiatry, University of California San Diego, 9500 Gilman Drive MC 0804, La Jolla, CA 92093-0804 USA ,0000 0004 0419 2708grid.410371.0Research Service, VA San Diego Healthcare System, San Diego, CA USA
| | - Zackary A. Cope
- 0000 0001 2107 4242grid.266100.3Department of Psychiatry, University of California San Diego, 9500 Gilman Drive MC 0804, La Jolla, CA 92093-0804 USA
| | - Benedetto Romoli
- 0000 0001 2107 4242grid.266100.3Department of Psychiatry, University of California San Diego, 9500 Gilman Drive MC 0804, La Jolla, CA 92093-0804 USA
| | - Esther Schrurs
- 0000 0001 2107 4242grid.266100.3Department of Psychiatry, University of California San Diego, 9500 Gilman Drive MC 0804, La Jolla, CA 92093-0804 USA ,0000000120346234grid.5477.1Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, Netherlands
| | - Aniek Joosen
- 0000 0001 2107 4242grid.266100.3Department of Psychiatry, University of California San Diego, 9500 Gilman Drive MC 0804, La Jolla, CA 92093-0804 USA ,0000000120346234grid.5477.1Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, Netherlands
| | - Jordy van Enkhuizen
- 0000 0001 2107 4242grid.266100.3Department of Psychiatry, University of California San Diego, 9500 Gilman Drive MC 0804, La Jolla, CA 92093-0804 USA
| | - Richard F. Sharp
- 0000 0001 2107 4242grid.266100.3Department of Psychiatry, University of California San Diego, 9500 Gilman Drive MC 0804, La Jolla, CA 92093-0804 USA
| | - Davide Dulcis
- Department of Psychiatry, University of California San Diego, 9500 Gilman Drive MC 0804, La Jolla, CA, 92093-0804, USA.
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18
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Maruani J, Anderson G, Etain B, Lejoyeux M, Bellivier F, Geoffroy PA. The neurobiology of adaptation to seasons: Relevance and correlations in bipolar disorders. Chronobiol Int 2018; 35:1335-1353. [DOI: 10.1080/07420528.2018.1487975] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Julia Maruani
- Inserm, U1144, Paris, France
- Université Paris Descartes, UMR-S 1144, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, UMR-S 1144, Paris, France
- AP-HP, GH Saint-Louis – Lariboisière – F. Widal, Pôle de Psychiatrie et de Médecine Addictologique, Paris, France
- Fondation FondaMental, Créteil, France
| | | | - Bruno Etain
- Inserm, U1144, Paris, France
- Université Paris Descartes, UMR-S 1144, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, UMR-S 1144, Paris, France
- AP-HP, GH Saint-Louis – Lariboisière – F. Widal, Pôle de Psychiatrie et de Médecine Addictologique, Paris, France
- Fondation FondaMental, Créteil, France
| | - Michel Lejoyeux
- Université Paris Diderot, Sorbonne Paris Cité, UMR-S 1144, Paris, France
- Department of Epidemiology, Paris Hospital Group – Psychiatry & Neurosciences, Paris, France
- Department of Psychiatry and Addictive Medicine, Assistance Publique-Hôpitaux de Paris (AP-HP), University Hospital Bichat-Claude Bernard, Paris, France
- Paris Diderot University – Paris VII, Paris, France
| | - Frank Bellivier
- Inserm, U1144, Paris, France
- Université Paris Descartes, UMR-S 1144, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, UMR-S 1144, Paris, France
- AP-HP, GH Saint-Louis – Lariboisière – F. Widal, Pôle de Psychiatrie et de Médecine Addictologique, Paris, France
- Fondation FondaMental, Créteil, France
| | - Pierre A. Geoffroy
- Inserm, U1144, Paris, France
- Université Paris Descartes, UMR-S 1144, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, UMR-S 1144, Paris, France
- AP-HP, GH Saint-Louis – Lariboisière – F. Widal, Pôle de Psychiatrie et de Médecine Addictologique, Paris, France
- Fondation FondaMental, Créteil, France
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Ikeda M, Saito T, Kondo K, Iwata N. Genome-wide association studies of bipolar disorder: A systematic review of recent findings and their clinical implications. Psychiatry Clin Neurosci 2018; 72:52-63. [PMID: 29057581 DOI: 10.1111/pcn.12611] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 10/16/2017] [Accepted: 10/17/2017] [Indexed: 01/05/2023]
Abstract
Recent advances in molecular genetics have enabled assessments of the associations among genetic variants (e.g., single-nucleotide polymorphisms) and susceptibility for complex diseases, including psychiatric disorders. Specifically, genome-wide association studies (GWAS), meta-analyses of the GWAS summary statistics, and mega-analyses (which use raw data, not summary statistics) of GWAS have provided revolutionary results and have identified numerous susceptibility genes or single-nucleotide polymorphisms. By using several tens of thousands of subjects, >40 genes have been identified as being associated with susceptibility for bipolar disorder so far. The purpose of this systematic review was to summarize the recent findings of bipolar disorder GWAS and discuss their clinical implications.
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Affiliation(s)
- Masashi Ikeda
- Department of Psychiatry, Fujita Health University School of Medicine, Toyoake, Japan
| | - Takeo Saito
- Department of Psychiatry, Fujita Health University School of Medicine, Toyoake, Japan
| | - Kenji Kondo
- Department of Psychiatry, Fujita Health University School of Medicine, Toyoake, Japan
| | - Nakao Iwata
- Department of Psychiatry, Fujita Health University School of Medicine, Toyoake, Japan
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20
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Parker G, Hadzi-Pavlovic D, Bayes A, Graham R. Relationship between photoperiod and hospital admissions for mania in New South Wales, Australia. J Affect Disord 2018; 226:72-76. [PMID: 28964995 DOI: 10.1016/j.jad.2017.09.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2017] [Revised: 09/11/2017] [Accepted: 09/13/2017] [Indexed: 10/18/2022]
Abstract
BACKGROUND Causes for a seasonal impact on admissions for mania remain to be clarified. We examined the impact of photoperiod, rate of change of photoperiod and hours of sunshine on admissions over an extended period. METHODS Monthly admission data to NSW psychiatric hospitals for more than twenty thousand patients admitted for mania over a fifteen-year period were correlated with photoperiod and sunshine changes. RESULTS While the peak in admissions occurred in spring, the shift in admissions being under-represented to being precipitously over-represented corresponded with the photoperiod commencing to increase in winter (i.e. July). Analyses identified rate of change in photoperiod as somewhat more influential than change in photoperiod and with hours of sunshine not making a distinctive contribution. Immediate and delayed impacts of rate of change as well as change in photoperiod across the whole year accounted for a distinctive 20% of the variance in hospital admissions. LIMITATIONS Validity of mania diagnoses cannot be established from the data set, admission data were obtained from across the state while meteorological data were obtained from the capital city, lag periods between onset of a mania and hospitalization (while identified) would impact on associations, social factors were not included and study associations do not imply causality. CONCLUSIONS The lack of a strong year-long correlation may reflect photoperiod changes being only a weak causal factor or that its influence may be through a strong impact phase after the winter solstice and with the spring peaking of admissions reflecting secondary photoperiod or other influences.
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Affiliation(s)
- Gordon Parker
- School of Psychiatry, UNSW, Sydney, NSW, Australia; Black Dog Institute, Hospital Rd, Randwick, NSW 2031, Australia.
| | - Dusan Hadzi-Pavlovic
- School of Psychiatry, UNSW, Sydney, NSW, Australia; Black Dog Institute, Hospital Rd, Randwick, NSW 2031, Australia
| | - Adam Bayes
- School of Psychiatry, UNSW, Sydney, NSW, Australia
| | - Rebecca Graham
- School of Psychiatry, UNSW, Sydney, NSW, Australia; Black Dog Institute, Hospital Rd, Randwick, NSW 2031, Australia
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21
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Liu A, Wang Y, Sahana G, Zhang Q, Liu L, Lund MS, Su G. Genome-wide Association Studies for Female Fertility Traits in Chinese and Nordic Holsteins. Sci Rep 2017; 7:8487. [PMID: 28814769 PMCID: PMC5559619 DOI: 10.1038/s41598-017-09170-9] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Accepted: 07/20/2017] [Indexed: 12/18/2022] Open
Abstract
Reduced female fertility could cause considerable economic loss and has become a worldwide problem in the modern dairy industry. The objective of this study was to detect quantitative trait loci (QTL) for female fertility traits in Chinese and Nordic Holsteins using various strategies. First, single-trait association analyses were performed for female fertility traits in Chinese and Nordic Holsteins. Second, the SNPs with P-value < 0.005 discovered in Chinese Holsteins were validated in Nordic Holsteins. Third, the summary statistics from single-trait association analyses were combined into meta-analyses to: (1) identify common QTL for multiple fertility traits within each Holstein population; (2) detect SNPs which were associated with a female fertility trait across two Holstein populations. A large numbers of QTL were discovered or confirmed for female fertility traits. The QTL segregating at 31.4~34.1 Mb on BTA13, 48.3~51.9 Mb on BTA23 and 34.0~37.6 Mb on BTA28 shared between Chinese and Nordic Holsteins were further ascertained using a validation approach and meta-analyses. Furthermore, multiple novel variants identified in Chinese Holsteins were validated with Nordic data as well as meta-analyses. The genes IL6R, SLC39A12, CACNB2, ZEB1, ZMIZ1 and FAM213A were concluded to be strong candidate genes for female fertility in Holsteins.
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Affiliation(s)
- Aoxing Liu
- Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture of China, National Engineering Laboratory of Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China.,Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, 8830, Tjele, Denmark
| | - Yachun Wang
- Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture of China, National Engineering Laboratory of Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China.
| | - Goutam Sahana
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, 8830, Tjele, Denmark
| | - Qin Zhang
- Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture of China, National Engineering Laboratory of Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Lin Liu
- Beijing Dairy Cattle Center, Beijing, 100192, China
| | - Mogens Sandø Lund
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, 8830, Tjele, Denmark
| | - Guosheng Su
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, 8830, Tjele, Denmark.
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22
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Muneer A. Mixed States in Bipolar Disorder: Etiology, Pathogenesis and Treatment. Chonnam Med J 2017; 53:1-13. [PMID: 28184334 PMCID: PMC5299125 DOI: 10.4068/cmj.2017.53.1.1] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 08/14/2016] [Accepted: 08/16/2016] [Indexed: 12/20/2022] Open
Abstract
Many bipolar disorder patients exhibit mixed affective states, which portend a generally more severe illness course and treatment resistance. In the previous renditions of Diagnostic and Statistical Manual mixed states were narrowly defined in the context of bipolar I disorder, but with the advent of DSM-5 the term “mixed episode” was dropped and replaced by “mixed features” specifier which could be broadly applied to manic, hypomanic and depressive episodes in both the bipolar spectrum and major depressive disorders. This paradigm shift reflected their significance in the prognosis and overall management of mood disorders, so that the clinicians should thoroughly familiarize themselves with the contemporary notions surrounding these conditions. The purpose of this manuscript is to bring to light the current conceptualizations regarding the etiology, pathogenesis and treatment of mixed states. To achieve this goal, in June 2016 an extensive literature search was undertaken using the PubMed database. Some exploratory terms utilized included “mixed states”, “mixed episodes”, “switching”, “rapid cycling” cross referenced with “bipolar disorder”. Focusing on the most relevant and up to date studies, it was revealed that mixed states result from genetic susceptibility in the circadian and dopamine neurotransmission apparatuses and disturbance in the intricate catecholamine-acetylcholine neurotransmission balance which leads to mood fluctuations. The management of mixed states is challenging with atypical antipsychotics, newer anticonvulsants and electroconvulsive therapy emerging as the foremost treatment options. In conclusion, while progress has been made in the neurobiological understanding of mixed states, the currently available therapeutic modalities have only shown limited effectiveness.
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Affiliation(s)
- Ather Muneer
- Islamic International Medical College, Riphah International University, Rawalpindi, Pakistan
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23
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Gonzalez S, Gupta J, Villa E, Mallawaarachchi I, Rodriguez M, Ramirez M, Zavala J, Armas R, Dassori A, Contreras J, Flores D, Jerez A, Ontiveros A, Nicolini H, Escamilla M. Replication of genome-wide association study (GWAS) susceptibility loci in a Latino bipolar disorder cohort. Bipolar Disord 2016; 18:520-527. [PMID: 27759212 PMCID: PMC5095871 DOI: 10.1111/bdi.12438] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Accepted: 09/02/2016] [Indexed: 12/23/2022]
Abstract
OBJECTIVES Recent genome-wide association studies (GWASs) have identified numerous putative genetic polymorphisms associated with bipolar disorder (BD) and/or schizophrenia (SC). We hypothesized that a portion of these polymorphisms would also be associated with BD in the Latino American population. To identify such regions, we tested previously identified genetic variants associated with BD and/or SC and ancestral haploblocks containing these single nucleotide polymorphisms (SNPs) in a sample of Latino subjects with BD. METHODS A total of 2254 Latino individuals were genotyped for 91 SNPs identified in previous BD and/or SC GWASs, along with selected SNPs in strong linkage disequilibrium with these markers. Family-based single marker and haplotype association testing was performed using the PBAT software package. Empirical P-values were derived from 10 000 permutations. RESULTS Associations of eight a priori GWAS SNPs with BD were replicated with nominal (P≤.05) levels of significance. These included SNPs within nuclear factor I A (NFIA), serologically defined colon cancer antigen 8 (SDCCAG8), lysosomal associated membrane protein 3 (LAMP3), nuclear factor kappa B subunit 1 (NFKB1), major histocompatibility complex, class I, B (HLA-B) and 5'-nucleotidase, cytosolic II (NT5C2) and SNPs within intragenic regions microRNA 6828 (MIR6828)-solute carrier family 7 member 14 (SLC7A14) and sonic hedgehog (SHH)-long intergenic non-protein coding RNA 1006 (LINC01006). Of the 76 ancestral haploblocks that were tested for associations with BD, our top associated haploblock was located in LAMP3; however, the association did not meet statistical thresholds of significance following Bonferroni correction. CONCLUSIONS These results indicate that some of the gene variants found to be associated with BD or SC in other populations are also associated with BD risk in Latinos. Variants in six genes and two intragenic regions were associated with BD in our Latino sample and provide additional evidence for overlap in genetic risk between SC and BD.
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Affiliation(s)
- Suzanne Gonzalez
- Center of Excellence in Neurosciences, Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA.
| | - Jayanta Gupta
- Department of Health Sciences, College of Health Professions & Social Work, Florida Gulf Coast University, Fort Myers, FL, USA
| | - Erika Villa
- Center of Excellence in Neurosciences, Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
| | - Indika Mallawaarachchi
- Biostatistics and Epidemiology Consulting Lab, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
| | - Marco Rodriguez
- Center of Excellence in Neurosciences, Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
| | - Mercedes Ramirez
- Center of Excellence in Neurosciences, Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
- Department of Psychiatry, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
| | - Juan Zavala
- Center of Excellence in Neurosciences, Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
- Department of Psychiatry, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
| | - Regina Armas
- Langley Porter Psychiatric Institute, University of California at San Francisco, San Francisco, CA, USA
| | - Albana Dassori
- Department of Psychiatry, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
- South Texas Veterans Health Care System, San Antonio, TX, USA
| | - Javier Contreras
- Centro de Investigación en Biología Celular y Molecular y Escuela de Biologia, Universidad de Costa Rica, San Jose, Costa Rica
| | - Deborah Flores
- Los Angeles Biomedical Research Center at Harbor, University of California Los Angeles Medical Center, Torrance, CA, USA
| | - Alvaro Jerez
- Centro Internacional de Trastornos Afectivos y de la Conducta Adictiva, Guatemala City, Guatemala
| | - Alfonso Ontiveros
- Instituto de Información e Investigación en Salud Mental AC, Monterrey, Nuevo Leon, México
| | - Humberto Nicolini
- Grupo de Estudios Médicos y Familiares Carracci S.C., México D.F, México
| | - Michael Escamilla
- Center of Excellence in Neurosciences, Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
- Department of Psychiatry, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
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24
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Sengun E, Yararbas K, Kasakyan S, Alanay Y. AUTS2 Syndrome in a 68-year-old female: Natural history and further delineation of the phenotype. Am J Med Genet A 2016; 170:3231-3236. [DOI: 10.1002/ajmg.a.37882] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 07/15/2016] [Indexed: 12/14/2022]
Affiliation(s)
- Ece Sengun
- Department of Pediatrics; Acibadem University School of Medicine; Istanbul Turkey
| | - Kanay Yararbas
- Duzen Laboratories Group; Istanbul Turkey
- Maltepe University School of Medicine; Istanbul Turkey
| | | | - Yasemin Alanay
- Pediatric Genetics Unit; Department of Pediatrics; Acibadem University School of Medicine; Istanbul Turkey
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25
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Degenhardt F, Niklowitz P, Szymczak S, Jacobs G, Lieb W, Menke T, Laudes M, Esko T, Weidinger S, Franke A, Döring F, Onur S. Genome-wide association study of serum coenzyme Q10 levels identifies susceptibility loci linked to neuronal diseases. Hum Mol Genet 2016; 25:2881-2891. [PMID: 27149984 DOI: 10.1093/hmg/ddw134] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Revised: 03/15/2016] [Accepted: 04/18/2016] [Indexed: 11/14/2022] Open
Abstract
Coenzyme Q10 (CoQ10) is a lipophilic redox molecule that is present in membranes of almost all cells in human tissues. CoQ10 is, amongst other functions, essential for the respiratory transport chain and is a modulator of inflammatory processes and gene expression. Rare monogenetic CoQ10 deficiencies show noticeable symptoms in tissues (e.g. kidney) and cell types (e.g. neurons) with a high energy demand. To identify common genetic variants influencing serum CoQ10 levels, we performed a fixed effects meta-analysis in two independent cross-sectional Northern German cohorts comprising 1300 individuals in total. We identified two genome-wide significant susceptibility loci. The best associated single nucleotide polymorphism (SNP) was rs9952641 (P value = 1.31 × 10 -8, β = 0.063, CI0.95 [0.041, 0.085]) within the COLEC12 gene on chromosome 18. The SNP rs933585 within the NRXN-1 gene on chromosome 2 also showed genome wide significance (P value = 3.64 × 10 -8, β = -0.034, CI0.95 [-0.046, -0.022]). Both genes have been previously linked to neuronal diseases like Alzheimer's disease, autism and schizophrenia. Among our 'top-10' associated variants, four additional loci with known neuronal connections showed suggestive associations with CoQ10 levels. In summary, this study demonstrates that serum CoQ10 levels are associated with common genetic loci that are linked to neuronal diseases.
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Affiliation(s)
- Frauke Degenhardt
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Schittenhelmstr. 12, 24105 Kiel, Germany
| | - Petra Niklowitz
- Children's Hospital Datteln, Witten/Herdecke University, Dr.-Friedrich-Steiner Str. 5, 45711 Datteln, Germany
| | - Silke Szymczak
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Schittenhelmstr. 12, 24105 Kiel, Germany
| | - Gunnar Jacobs
- Institute of Epidemiology and Biobank PopGen, Christian-Albrechts-University of Kiel, Niemannsweg 11, Haus 1, 24105 Kiel, Germany
| | - Wolfgang Lieb
- Institute of Epidemiology and Biobank PopGen, Christian-Albrechts-University of Kiel, Niemannsweg 11, Haus 1, 24105 Kiel, Germany
| | - Thomas Menke
- Children's Hospital Datteln, Witten/Herdecke University, Dr.-Friedrich-Steiner Str. 5, 45711 Datteln, Germany
| | - Matthias Laudes
- Department of Internal Medicine, University Hospital Schleswig-Holstein, Campus Kiel, Arnold-Heller-Straße 3, Haus 6, 24105 Kiel, Germany
| | - Tõnu Esko
- Estonian Research Center, University of Tartu, Riia 23b, 51010, Tartu, Estland
| | - Stephan Weidinger
- Department of Dermatology, University Hospital Schleswig-Holstein, Campus Kiel, Schittenhelmstraße 7, 24105 Kiel, Germany
| | - Andre Franke
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Schittenhelmstr. 12, 24105 Kiel, Germany
| | - Frank Döring
- Division of Molecular Prevention, Institute of Human Nutrition and Food Science, Christian-Albrechts-University of Kiel, Heinrich-Hecht-Platz 10, 24118 Kiel, Germany
| | - Simone Onur
- Division of Molecular Prevention, Institute of Human Nutrition and Food Science, Christian-Albrechts-University of Kiel, Heinrich-Hecht-Platz 10, 24118 Kiel, Germany
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26
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Ding B, Cave JW, Dobner PR, Mullikin-Kilpatrick D, Bartzokis M, Zhu H, Chow CW, Gronostajski RM, Kilpatrick DL. Reciprocal autoregulation by NFI occupancy and ETV1 promotes the developmental expression of dendrite-synapse genes in cerebellar granule neurons. Mol Biol Cell 2016; 27:1488-99. [PMID: 26941328 PMCID: PMC4850036 DOI: 10.1091/mbc.e15-07-0476] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 02/25/2016] [Indexed: 12/30/2022] Open
Abstract
Temporal control of dendritogenesis is poorly understood. Mutual feedback between NFIA temporal occupancy and ETV1 drives the timing of gene expression associated with dendrite formation in maturing neurons. A sequential timing model is proposed in which ETV1 autoregulation precedes activation of downstream NFIA/ETV1 coregulated genes. Nuclear Factor One (NFI) transcription factors regulate temporal gene expression required for dendritogenesis and synaptogenesis via delayed occupancy of target promoters in developing cerebellar granule neurons (CGNs). Mechanisms that promote NFI temporal occupancy have not been previously defined. We show here that the transcription factor ETV1 directly binds to and is required for expression and NFI occupancy of a cohort of NFI-dependent genes in CGNs maturing in vivo. Expression of ETV1 is low in early postnatal cerebellum and increases with maturation, mirroring NFI temporal occupancy of coregulated target genes. Precocious expression of ETV1 in mouse CGNs accelerated onset of expression and NFI temporal occupancy of late target genes and enhanced Map2(+) neurite outgrowth. ETV1 also activated expression and NFI occupancy of the Etv1 gene itself, and this autoregulatory loop preceded ETV1 binding and activation of other coregulated target genes in vivo. These findings suggest a potential model in which ETV1 activates NFI temporal binding to a subset of late-expressed genes in a stepwise manner by initial positive feedback regulation of the Etv1 gene itself followed by activation of downstream coregulated targets as ETV1 expression increases. Sequential transcription factor autoregulation and subsequent binding to downstream promoters may provide an intrinsic developmental timer for dendrite/synapse gene expression.
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Affiliation(s)
- Baojin Ding
- Department of Microbiology and Physiological Systems and Program in Neuroscience, University of Massachusetts Medical School, Worcester, MA 01605
| | - John W Cave
- Burke Medical Research Institute, White Plains, NY 10605 Weill Cornell Medical College, Brain and Mind Research Institute, New York, NY 10065
| | - Paul R Dobner
- Department of Microbiology and Physiological Systems and Program in Neuroscience, University of Massachusetts Medical School, Worcester, MA 01605
| | - Debra Mullikin-Kilpatrick
- Department of Microbiology and Physiological Systems and Program in Neuroscience, University of Massachusetts Medical School, Worcester, MA 01605
| | - Marina Bartzokis
- Department of Microbiology and Physiological Systems and Program in Neuroscience, University of Massachusetts Medical School, Worcester, MA 01605
| | - Hong Zhu
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461
| | - Chi-Wing Chow
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461
| | - Richard M Gronostajski
- Department of Biochemistry, Program in Neuroscience and Developmental Genomics Group, New York State Center of Excellence in Bioinformatics and Life Sciences, University at Buffalo, Buffalo, NY 14203
| | - Daniel L Kilpatrick
- Department of Microbiology and Physiological Systems and Program in Neuroscience, University of Massachusetts Medical School, Worcester, MA 01605
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27
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Dalvie S, Fabbri C, Ramesar R, Serretti A, Stein DJ. Glutamatergic and HPA-axis pathway genes in bipolar disorder comorbid with alcohol- and substance use disorders. Metab Brain Dis 2016; 31:183-9. [PMID: 26563126 DOI: 10.1007/s11011-015-9762-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Accepted: 11/06/2015] [Indexed: 01/13/2023]
Abstract
Glutamatergic neurotransmission has been shown to be dysregulated in bipolar disorder (BD), alcohol use disorder (AUD) and substance use disorder (SUD). Similarly, disruption in the hypothalamic-pituitary-adrenal (HPA)-axis has also been observed in these conditions. BD is often comorbid with AUD and SUD. The effects of the glutamatergic and HPA systems have not been extensively examined in individuals with BD-AUD and BD-SUD comorbidity. The aim of this investigation was to determine whether variants in the glutamatergic pathway and HPA-axis are associated with BD-AUD and BD-SUD comorbidity. The research cohort consisted of 498 individuals with BD type I from the Systematic Treatment Enhancement Program for Bipolar Disorder (STEP-BD). A subset of the cohort had comorbid current AUD and current SUD. A total of 1935 SNPs from both the glutamatergic and HPA pathways were selected from the STEP-BD genome-wide dataset. To identify population stratification, IBS clustering was performed using the program Plink 1.07. Single SNP association and gene-based association testing were conducted using logistic regression. A pathway analysis of glutamatergic and HPA genes was performed, after imputation using IMPUTE2. No single SNP was associated with BD-AUD or BD-SUD comorbidity after correction for multiple testing. However, from the gene-based analysis, the gene PRKCI was significantly associated with BD-AUD. The pathway analysis provided overall negative findings, although several genes including GRIN2B showed high percentage of associated SNPs for BD-AUD. Even though the glutamatergic and HPA pathways may not be involved in BD-AUD and BD-SUD comorbidity, PRKCI deserves further investigation in BD-AUD.
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Affiliation(s)
- Shareefa Dalvie
- MRC/UCT Human Genetics Research Unit, Division of Human Genetics, University of Cape Town, Observatory, Cape Town, South Africa.
| | - Chiara Fabbri
- Institute of Psychiatry, University of Bologna, Viale Carlo Pepoli 5, Bologna, Italy
| | - Raj Ramesar
- MRC/UCT Human Genetics Research Unit, Division of Human Genetics, University of Cape Town, Observatory, Cape Town, South Africa
| | - Alessandro Serretti
- Institute of Psychiatry, University of Bologna, Viale Carlo Pepoli 5, Bologna, Italy
| | - Dan J Stein
- Department of Psychiatry and Mental Health, University of Cape Town, Observatory, Cape Town, South Africa
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28
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Aghajanirefah A, Nguyen LN, Ohadi M. BEND3 is involved in the human-specific repression of calreticulin: Implication for the evolution of higher brain functions in human. Gene 2015; 576:577-80. [PMID: 26481236 DOI: 10.1016/j.gene.2015.10.040] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 10/01/2015] [Accepted: 10/15/2015] [Indexed: 01/27/2023]
Abstract
Recent emerging evidence indicates that changes in gene expression levels are linked to human evolution. We have previously reported a human-specific nucleotide in the promoter sequence of the calreticulin (CALR) gene at position -220C, which is the site of action of valproic acid. Reversion of this nucleotide to the ancestral A-allele has been detected in patients with degrees of deficit in higher brain cognitive functions. This mutation has since been reported in the 1000 genomes database at an approximate frequency of <0.0004 in humans (rs138452745). In the study reported here, we present update on the status of rs138452745 across evolution, based on the Ensembl and NCBI databases. The DNA pulldown assay was also used to identify the proteins binding to the C- and A-alleles, using two cell lines, SK-N-BE and HeLa. Consistent with our previous findings, the C-allele is human-specific, and the A-allele is the rule across all other species (N=38). This nucleotide resides in a block of 12-nucleotides that is strictly conserved across evolution. The DNA pulldown experiments revealed that in both SK-N-BE and HeLa cells, the transcription repressor BEN domain containing 3 (BEND3) binds to the human-specific C-allele, whereas the nuclear factor I (NFI) family members, NF1A, B, C, and X, specifically bind to the ancestral A-allele. This binding pattern is consistent with a previously reported decreased promoter activity of the C-allele vs. the A-allele. We propose that there is a link between binding of BEND3 to the CALR rs138452745 C-allele and removal of NFI binding site from this nucleotide, and the evolution of human-specific higher brain functions. To our knowledge, CALR rs138452745 is the first instance of enormous nucleotide conservation across evolution, except in the human species.
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Affiliation(s)
- A Aghajanirefah
- Department of Molecular Biology, Faculty of Science and Medicine, Radboud Institute for Molecular Life Sciences, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - L N Nguyen
- Department of Molecular Biology, Faculty of Science and Medicine, Radboud Institute for Molecular Life Sciences, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - M Ohadi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
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29
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Geoffroy PA, Lajnef M, Bellivier F, Jamain S, Gard S, Kahn JP, Henry C, Leboyer M, Etain B. Genetic association study of circadian genes with seasonal pattern in bipolar disorders. Sci Rep 2015; 5:10232. [PMID: 25989161 PMCID: PMC4437291 DOI: 10.1038/srep10232] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Accepted: 04/07/2015] [Indexed: 01/28/2023] Open
Abstract
About one fourth of patients with bipolar disorders (BD) have depressive episodes with a seasonal pattern (SP) coupled to a more severe disease. However, the underlying genetic influence on a SP in BD remains to be identified. We studied 269 BD Caucasian patients, with and without SP, recruited from university-affiliated psychiatric departments in France and performed a genetic single-marker analysis followed by a gene-based analysis on 349 single nucleotide polymorphisms (SNPs) spanning 21 circadian genes and 3 melatonin pathway genes. A SP in BD was nominally associated with 14 SNPs identified in 6 circadian genes: NPAS2, CRY2, ARNTL, ARNTL2, RORA and RORB. After correcting for multiple testing, using a false discovery rate approach, the associations remained significant for 5 SNPs in NPAS2 (chromosome 2:100793045–100989719): rs6738097 (pc = 0.006), rs12622050 (pc = 0.006), rs2305159 (pc = 0.01), rs1542179 (pc = 0.01), and rs1562313 (pc = 0.02). The gene-based analysis of the 349 SNPs showed that rs6738097 (NPAS2) and rs1554338 (CRY2) were significantly associated with the SP phenotype (respective Empirical p-values of 0.0003 and 0.005). The associations remained significant for rs6738097 (NPAS2) after Bonferroni correction. The epistasis analysis between rs6738097 (NPAS2) and rs1554338 (CRY2) suggested an additive effect. Genetic variations in NPAS2 might be a biomarker for a seasonal pattern in BD.
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Affiliation(s)
- Pierre Alexis Geoffroy
- 1] Inserm, U1144, Paris, F-75006, France [2] AP-HP, GH Saint-Louis - Lariboisière - Fernand Widal, Pôle Neurosciences, 75475 Paris Cedex 10, France [3] Université Paris Descartes, UMR-S 1144, Paris, F-75006, France [4] Fondation FondaMental, Créteil, 94000, France
| | - Mohamed Lajnef
- 1] Fondation FondaMental, Créteil, 94000, France [2] INSERM, U955, Psychiatrie génétique, Créteil, 94000, France [3] AP-HP, Hôpitaux Universitaires Albert Chenevier-Henri Mondor , DHU PePSY, Pôle de Psychiatrie, Créteil, 94000, France
| | - Frank Bellivier
- 1] Inserm, U1144, Paris, F-75006, France [2] AP-HP, GH Saint-Louis - Lariboisière - Fernand Widal, Pôle Neurosciences, 75475 Paris Cedex 10, France [3] Université Paris Descartes, UMR-S 1144, Paris, F-75006, France [4] Fondation FondaMental, Créteil, 94000, France
| | - Stéphane Jamain
- 1] Fondation FondaMental, Créteil, 94000, France [2] INSERM, U955, Psychiatrie génétique, Créteil, 94000, France [3] Université Paris Est, Faculté de médecine, Créteil, 94000, France
| | - Sébastien Gard
- 1] Fondation FondaMental, Créteil, 94000, France [2] Hôpital Charles Perrens, Centre Expert Trouble Bipolaire, Service de psychiatrie adulte, Pôle 3-4-7, Bordeaux, 33000, France
| | - Jean-Pierre Kahn
- 1] Fondation FondaMental, Créteil, 94000, France [2] Service de Psychiatrie et Psychologie Clinique, CHU de Nancy, Hôpitaux de Brabois, Vandoeuvre Les Nancy, 54500, France
| | - Chantal Henry
- 1] Fondation FondaMental, Créteil, 94000, France [2] INSERM, U955, Psychiatrie génétique, Créteil, 94000, France [3] AP-HP, Hôpitaux Universitaires Albert Chenevier-Henri Mondor , DHU PePSY, Pôle de Psychiatrie, Créteil, 94000, France [4] Université Paris Est, Faculté de médecine, Créteil, 94000, France
| | - Marion Leboyer
- 1] Fondation FondaMental, Créteil, 94000, France [2] INSERM, U955, Psychiatrie génétique, Créteil, 94000, France [3] AP-HP, Hôpitaux Universitaires Albert Chenevier-Henri Mondor , DHU PePSY, Pôle de Psychiatrie, Créteil, 94000, France [4] Université Paris Est, Faculté de médecine, Créteil, 94000, France
| | - Bruno Etain
- 1] Fondation FondaMental, Créteil, 94000, France [2] INSERM, U955, Psychiatrie génétique, Créteil, 94000, France [3] AP-HP, Hôpitaux Universitaires Albert Chenevier-Henri Mondor , DHU PePSY, Pôle de Psychiatrie, Créteil, 94000, France [4] Université Paris Est, Faculté de médecine, Créteil, 94000, France
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30
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Investigating the mechanism(s) underlying switching between states in bipolar disorder. Eur J Pharmacol 2015; 759:151-62. [PMID: 25814263 DOI: 10.1016/j.ejphar.2015.03.019] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 03/03/2015] [Accepted: 03/12/2015] [Indexed: 12/12/2022]
Abstract
Bipolar disorder (BD) is a unique disorder that transcends domains of function since the same patient can exhibit depression or mania, states with polar opposite mood symptoms. During depression, people feel helplessness, reduced energy, and risk aversion, while with mania behaviors include grandiosity, increased energy, less sleep, and risk preference. The neural mechanism(s) underlying each state are gaining clarity, with catecholaminergic disruption seen during mania, and cholinergic dysfunction during depression. The fact that the same patient cycles/switches between these states is the defining characteristic of BD however. Of greater importance therefore, is the mechanism(s) underlying cycling from one state - and its associated neural changes - to another, considered the 'holy grail' of BD research. Herein, we review studies investigating triggers that induce switching to these states. By identifying such triggers, researchers can study neural mechanisms underlying each state and importantly how such mechanistic changes can occur in the same subject. Current animal models of this switch are also discussed, from submissive- and dominant-behaviors to kindling effects. Focus however, is placed on how seasonal changes can induce manic and depressive states in BD sufferers. Importantly, changing photoperiod lengths can induce local switches in neurotransmitter expression in normal animals, from increased catecholaminergic expression during periods of high activity, to increased somatostatin and corticotrophin releasing factor during periods of low activity. Identifying susceptibilities to this switch would enable the development of targeted animal models. From animal models, targeted treatments could be developed and tested that would minimize the likelihood of switching.
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31
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Oksenberg N, Haliburton GDE, Eckalbar WL, Oren I, Nishizaki S, Murphy K, Pollard KS, Birnbaum RY, Ahituv N. Genome-wide distribution of Auts2 binding localizes with active neurodevelopmental genes. Transl Psychiatry 2014; 4:e431. [PMID: 25180570 PMCID: PMC4199417 DOI: 10.1038/tp.2014.78] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 07/14/2014] [Accepted: 07/26/2014] [Indexed: 12/16/2022] Open
Abstract
The autism susceptibility candidate 2 gene (AUTS2) has been associated with multiple neurological diseases including autism spectrum disorders (ASDs). Previous studies showed that AUTS2 has an important neurodevelopmental function and is a suspected master regulator of genes implicated in ASD-related pathways. However, the regulatory role and targets of Auts2 are not well known. Here, by using ChIP-seq (chromatin immunoprecipitation followed by deep sequencing) and RNA-seq on mouse embryonic day 16.5 forebrains, we elucidated the gene regulatory networks of Auts2. We find that the majority of promoters bound by Auts2 belong to genes highly expressed in the developing forebrain, suggesting that Auts2 is involved in transcriptional activation. Auts2 non-promoter-bound regions significantly overlap developing brain-associated enhancer marks and are located near genes involved in neurodevelopment. Auts2-marked sequences are enriched for binding site motifs of neurodevelopmental transcription factors, including Pitx3 and TCF3. In addition, we characterized two functional brain enhancers marked by Auts2 near NRXN1 and ATP2B2, both ASD-implicated genes. Our results implicate Auts2 as an active regulator of important neurodevelopmental genes and pathways and identify novel genomic regions that could be associated with ASD and other neurodevelopmental diseases.
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Affiliation(s)
- N Oksenberg
- Department of Bioengineering and Therapeutic
Sciences, University of California San Francisco,
San Francisco, CA, USA,Institute for Human Genetics, University of
California San Francisco, San Francisco, CA, USA
| | - G D E Haliburton
- Institute for Human Genetics, University of
California San Francisco, San Francisco, CA, USA,Gladstone Institutes, San
Francisco, CA, USA
| | - W L Eckalbar
- Department of Bioengineering and Therapeutic
Sciences, University of California San Francisco,
San Francisco, CA, USA,Institute for Human Genetics, University of
California San Francisco, San Francisco, CA, USA
| | - I Oren
- Department of Life Sciences, Ben Gurion University of
the Negev, Beer Sheva, Israel
| | - S Nishizaki
- Department of Bioengineering and Therapeutic
Sciences, University of California San Francisco,
San Francisco, CA, USA,Institute for Human Genetics, University of
California San Francisco, San Francisco, CA, USA
| | - K Murphy
- Department of Bioengineering and Therapeutic
Sciences, University of California San Francisco,
San Francisco, CA, USA,Institute for Human Genetics, University of
California San Francisco, San Francisco, CA, USA
| | - K S Pollard
- Institute for Human Genetics, University of
California San Francisco, San Francisco, CA, USA,Gladstone Institutes, San
Francisco, CA, USA,Division of Biostatistics, University of California
San Francisco, San Francisco, CA, USA
| | - R Y Birnbaum
- Department of Bioengineering and Therapeutic
Sciences, University of California San Francisco,
San Francisco, CA, USA,Institute for Human Genetics, University of
California San Francisco, San Francisco, CA, USA,Department of Life Sciences, Ben Gurion University of
the Negev, Beer Sheva, Israel,Department of Bioengineering and Therapeutic Sciences, University of
California San Francisco, 1550 4th Street, Rock Hall, RH584C, San Francisco,
CA
94158, USA. E-mails: or
| | - N Ahituv
- Department of Bioengineering and Therapeutic
Sciences, University of California San Francisco,
San Francisco, CA, USA,Institute for Human Genetics, University of
California San Francisco, San Francisco, CA, USA,Department of Bioengineering and Therapeutic Sciences, University of
California San Francisco, 1550 4th Street, Rock Hall, RH584C, San Francisco,
CA
94158, USA. E-mails: or
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32
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Cruceanu C, Ambalavanan A, Spiegelman D, Gauthier J, Lafrenière RG, Dion PA, Alda M, Turecki G, Rouleau GA. Family-based exome-sequencing approach identifies rare susceptibility variants for lithium-responsive bipolar disorder. Genome 2013; 56:634-40. [DOI: 10.1139/gen-2013-0081] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Bipolar disorder (BD) is a psychiatric condition characterized by the occurrence of at least two episodes of clinically disturbed mood including mania and depression. A vast literature describing BD studies suggests that a strong genetic contribution likely underlies this condition; heritability is estimated to be as high as 80%. Many studies have identified BD susceptibility loci, but because of the genetic and phenotypic heterogeneity observed across individuals, very few loci were subsequently replicated. Research in BD genetics to date has consisted of classical linkage or genome-wide association studies, which have identified candidate genes hypothesized to present common susceptibility variants. Although the observation of such common variants is informative, they can only explain a small fraction of the predicted BD heritability, suggesting a considerable contribution would come from rare and highly penetrant variants. We are seeking to identify such rare variants, and to increase the likelihood of being successful, we aimed to reduce the phenotypic heterogeneity factor by focusing on a well-defined subphenotype of BD: excellent response to lithium monotherapy. Our group has previously shown positive response to lithium therapy clusters in families and has a consistent clinical presentation with minimal comorbidity. To identify such rare variants, we are using a targeted exome capture and high-throughput DNA sequencing approach, and analyzing the entire coding sequences of BD affected individuals from multigenerational families. We are prioritizing rare variants with a frequency of less than 1% in the population that segregate with affected status within each family, as well as being potentially highly penetrant (e.g., protein truncating, missense, or frameshift) or functionally relevant (e.g., 3′UTR, 5′UTR, or splicing). By focusing on rare variants in a familial cohort, we hope to explain a significant portion of the missing heritability in BD, as well as to narrow our current insight on the key biochemical pathways implicated in this complex disorder.
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Affiliation(s)
- Cristiana Cruceanu
- Department of Human Genetics, McGill University, Montréal, QC, Canada
- McGill Group for Suicide Studies, McGill University, Montréal, QC, Canada
| | - Amirthagowri Ambalavanan
- Department of Human Genetics, McGill University, Montréal, QC, Canada
- Center of Excellence in Neuroscience of the Université de Montréal-CENUM, Centre de Recherche du Centre Hospitalier de l’Université de Montréal-CRCHUM, University of Montreal, Montréal, QC, Canada
| | - Dan Spiegelman
- Center of Excellence in Neuroscience of the Université de Montréal-CENUM, Centre de Recherche du Centre Hospitalier de l’Université de Montréal-CRCHUM, University of Montreal, Montréal, QC, Canada
| | - Julie Gauthier
- Center of Excellence in Neuroscience of the Université de Montréal-CENUM, Centre de Recherche du Centre Hospitalier de l’Université de Montréal-CRCHUM, University of Montreal, Montréal, QC, Canada
| | - Ronald G. Lafrenière
- Center of Excellence in Neuroscience of the Université de Montréal-CENUM, Centre de Recherche du Centre Hospitalier de l’Université de Montréal-CRCHUM, University of Montreal, Montréal, QC, Canada
| | - Patrick A. Dion
- Center of Excellence in Neuroscience of the Université de Montréal-CENUM, Centre de Recherche du Centre Hospitalier de l’Université de Montréal-CRCHUM, University of Montreal, Montréal, QC, Canada
| | - Martin Alda
- Department of Psychiatry, Dalhousie University, Halifax, NS, Canada
| | - Gustavo Turecki
- Department of Human Genetics, McGill University, Montréal, QC, Canada
- McGill Group for Suicide Studies, McGill University, Montréal, QC, Canada
| | - Guy A. Rouleau
- Department of Human Genetics, McGill University, Montréal, QC, Canada
- Center of Excellence in Neuroscience of the Université de Montréal-CENUM, Centre de Recherche du Centre Hospitalier de l’Université de Montréal-CRCHUM, University of Montreal, Montréal, QC, Canada
- Montreal Neurological Institute and Hospital, McGill University, Montréal, QC, Canada
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Oksenberg N, Ahituv N. The role of AUTS2 in neurodevelopment and human evolution. Trends Genet 2013; 29:600-8. [PMID: 24008202 DOI: 10.1016/j.tig.2013.08.001] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 08/05/2013] [Accepted: 08/06/2013] [Indexed: 12/31/2022]
Abstract
The autism susceptibility candidate 2 (AUTS2) gene is associated with multiple neurological diseases, including autism, and has been implicated as an important gene in human-specific evolution. Recent functional analysis of this gene has revealed a potential role in neuronal development. Here, we review the literature regarding AUTS2, including its discovery, expression, association with autism and other neurological and non-neurological traits, implication in human evolution, function, regulation, and genetic pathways. Through progress in clinical genomic analysis, the medical importance of this gene is becoming more apparent, as highlighted in this review, but more work needs to be done to discover the precise function and the genetic pathways associated with AUTS2.
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Affiliation(s)
- Nir Oksenberg
- Department of Bioengineering and Therapeutic Sciences, and Institute for Human Genetics, University of California, San Francisco (UCSF), 1550 4th Street, San Francisco, CA 94158, USA
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Lee HJ, Son GH, Geum D. Circadian rhythm hypotheses of mixed features, antidepressant treatment resistance, and manic switching in bipolar disorder. Psychiatry Investig 2013; 10:225-32. [PMID: 24302944 PMCID: PMC3843013 DOI: 10.4306/pi.2013.10.3.225] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Revised: 08/06/2013] [Accepted: 08/06/2013] [Indexed: 12/21/2022] Open
Abstract
Numerous hypotheses have been put forth over the years to explain the development of bipolar disorder. Of these, circadian rhythm hypotheses have gained much importance of late. While the hypothalamus-pituitary-adrenal (HPA) axis hyperactivation hypothesis and the monoamine hypothesis somewhat explain the pathogenic mechanism of depression, they do not provide an explanation for the development of mania/hypomania. Interestingly, all patients with bipolar disorder display significant disruption of circadian rhythms and sleep/wake cycles throughout their mood cycles. Indeed, mice carrying the Clock gene mutation exhibit an overall behavioral profile that is similar to human mania, including hyperactivity, decreased sleep, lowered depression-like behavior, and lower anxiety. It was recently reported that monoamine signaling is in fact regulated by the circadian system. Thus, circadian rhythm instability, imposed on the dysregulation of HPA axis and monoamine system, may in turn increase individual susceptibility for switching from depression to mania/hypomania. In addition to addressing the pathophysiologic mechanism underlying the manic switch, circadian rhythm hypotheses can explain other bipolar disorder-related phenomena such as treatment resistant depression and mixed features.
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Affiliation(s)
- Heon-Jeong Lee
- Department of Psychiatry, Korea University College of Medicine, Seoul, Republic of Korea
| | - Gi-Hoon Son
- Department of Legal Medicine, Korea University College of Medicine, Seoul, Republic of Korea
| | - Dongho Geum
- Graduate School of Medicine, Korea University, Seoul, Republic of Korea
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35
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Szczepankiewicz A. Evidence for single nucleotide polymorphisms and their association with bipolar disorder. Neuropsychiatr Dis Treat 2013; 9:1573-82. [PMID: 24143106 PMCID: PMC3798233 DOI: 10.2147/ndt.s28117] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Bipolar disorder (BD) is a complex disorder with a number of susceptibility genes and environmental risk factors involved in its pathogenesis. In recent years, huge progress has been made in molecular techniques for genetic studies, which have enabled identification of numerous genomic regions and genetic variants implicated in BD across populations. Despite the abundance of genetic findings, the results have often been inconsistent and not replicated for many candidate genes/single nucleotide polymorphisms (SNPs). Therefore, the aim of the review presented here is to summarize the most important data reported so far in candidate gene and genome-wide association studies. Taking into account the abundance of association data, this review focuses on the most extensively studied genes and polymorphisms reported so far for BD to present the most promising genomic regions/SNPs involved in BD. The review of association data reveals evidence for several genes (SLC6A4/5-HTT [serotonin transporter gene], BDNF [brain-derived neurotrophic factor], DAOA [D-amino acid oxidase activator], DTNBP1 [dysbindin], NRG1 [neuregulin 1], DISC1 [disrupted in schizophrenia 1]) to be crucial candidates in BD, whereas numerous genome-wide association studies conducted in BD indicate polymorphisms in two genes (CACNA1C [calcium channel, voltage-dependent, L type, alpha 1C subunit], ANK3 [ankyrin 3]) replicated for association with BD in most of these studies. Nevertheless, further studies focusing on interactions between multiple candidate genes/SNPs, as well as systems biology and pathway analyses are necessary to integrate and improve the way we analyze the currently available association data.
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Affiliation(s)
- Aleksandra Szczepankiewicz
- Laboratory of Molecular and Cell Biology, Poznan University of Medical Sciences, Poznan, Poland ; Department of Psychiatric Genetics, Poznan University of Medical Sciences, Poznan, Poland
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