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Epigenetics major depression

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https://www.readbyqxmd.com/read/28777307/epigenomics-of-major-depressive-disorders-and-schizophrenia-early-life-decides
#1
REVIEW
Anke Hoffmann, Vincenza Sportelli, Michael Ziller, Dietmar Spengler
Brain development is guided by the interactions between the genetic blueprint and the environment. Epigenetic mechanisms, especially DNA methylation, can mediate these interactions and may also trigger long-lasting adaptations in developmental programs that increase the risk of major depressive disorders (MDD) and schizophrenia (SCZ). Early life adversity is a major risk factor for MDD/SCZ and can trigger persistent genome-wide changes in DNA methylation at genes important to early, but also to mature, brain function, including neural proliferation, differentiation, and synaptic plasticity, among others...
August 4, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28754344/the-effect-of-childhood-trauma-on-serum-bdnf-in-bipolar-depression-is-modulated-by-the-serotonin-promoter-genotype
#2
Francesco Benedetti, Oliver Ambrée, Clara Locatelli, Cristina Lorenzi, Sara Poletti, Cristina Colombo, Volker Arolt
In healthy humans, both childhood trauma and the short form of the serotonin promoter transporter genotype (5-HTTLPR) are associated with lower levels of brain-derived neurotrophic factor (BDNF). In subjects with bipolar disorder (BD), lower levels of BDNF and a higher degree of childhood trauma were observed compared with healthy controls. However, is still unknown if the functional 5-HTTLPR polymorphisms exerts an effect on both abnormalities. In 40 inpatients affected by a major depressive episode in the course of BD, we genotyped 5-HTTLPR, measured serum BDNF with ELISA, and assessed early adversities by the childhood trauma questionnaire (CTQ)...
July 25, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28714605/epigenetic-alterations-and-prenatal-maternal-depression
#3
REVIEW
Zsofia Nemoda, Moshe Szyf
Major depressive disorder of the mother affects 6 to 17% of pregnancies worldwide and can lead to negative outcomes, such as preterm delivery and later mental health problems of the child. It has been proposed that developmental programming has long-lasting effects in the offspring that might be mediated by epigenetic mechanisms, such as DNA methylation. Altered stress regulation or impaired immunological function of the mother can potentially affect DNA methylation processes of the fetus, changing gene expression levels in utero...
July 17, 2017: Birth defects research
https://www.readbyqxmd.com/read/28691768/microbiome-inflammation-epigenetic-alterations-and-mental-diseases
#4
REVIEW
Reza Alam, Hamid M Abdolmaleky, Jin-Rong Zhou
Major mental diseases such as autism, bipolar disorder, schizophrenia, and major depressive disorder are debilitating illnesses with complex etiologies. Recent findings show that the onset and development of these illnesses cannot be well described by the one-gene; one-disease approach. Instead, their clinical presentation is thought to result from the regulative interplay of a large number of genes. Even though the involvement of many genes are likely, up regulating and activation or down regulation and silencing of these genes by the environmental factors play a crucial role in contributing to their pathogenesis...
July 10, 2017: American Journal of Medical Genetics. Part B, Neuropsychiatric Genetics
https://www.readbyqxmd.com/read/28649671/early-life-stress-mood-and-anxiety-disorders
#5
Shariful A Syed, Charles B Nemeroff
Early life stress has been shown to exert profound short- and long-term effects on human physiology both in the central nervous system and peripherally. Early life stress has demonstrated clear association with many psychiatric disorders including major depression, posttraumatic stress disorder, and bipolar disorder. The Diagnostic and Statistics Manuel of Mental Disorders (DSM) diagnostic categorical system has served as a necessary framework for clinical service, delivery, and research, however has not been completely matching the neurobiological research perspective...
February 2017: Chronic stress
https://www.readbyqxmd.com/read/28645747/a-review-of-dna-methylation-in-depression
#6
REVIEW
Dongmei Chen, Lin Meng, Fei Pei, Yang Zheng, Jiyan Leng
As one of the most common psychiatric disorders, depression has been a major public health problem. Growing evidence suggests that epigenetic modification is essential in biological processes of depression. Recently, DNA methylation has been regarded as a potential link between environment and depression. In this review, we reviewed current studies of the association between DNA methylation and depression. The association between DNA methylation of seven genes, including BDNF, SLC6A4, NR3C1, 5-HTR (1A, 2A, and 3A), FKBP5, MAO-A and OXTR, and depression were reviewed in this study...
June 20, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28645745/dna-methylation-of-dlg4-and-gja-1-of-human-hippocampus-and-prefrontal-cortex-in-major-depression-is-unchanged-in-comparison-to-healthy-individuals
#7
Oliver Kaut, Amit Sharma, Ina Schmitt, René Hurlemann, Ullrich Wüllner
Epigenetic alterations provide a potential mechanism to account for the numerous gene-environment interactions that have been reported in association with neuropsychiatric phenotypes. In context to major depression disorder (MDD), where postmortem and neuroimaging studies provide insights into dysfunctional brain regions, involvement of genetic heterogeneity also revealed the complexity of this disorder. Despite intensive research during the past several decades and information from genome wide studies, pathophysiology of depressive disorders remained elusive...
June 20, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28608854/the-influence-of-the-rs6295-gene-polymorphism-on-serotonin-1a-receptor-distribution-investigated-with-pet-in-patients-with-major-depression-applying-machine-learning
#8
A Kautzky, G M James, C Philippe, P Baldinger-Melich, C Kraus, G S Kranz, T Vanicek, G Gryglewski, W Wadsak, M Mitterhauser, D Rujescu, S Kasper, R Lanzenberger
Major depressive disorder (MDD) is the most common neuropsychiatric disease and despite extensive research, its genetic substrate is still not sufficiently understood. The common polymorphism rs6295 of the serotonin-1A receptor gene (HTR1A) is affecting the transcriptional regulation of the 5-HT1A receptor and has been closely linked to MDD. Here, we used positron emission tomography (PET) exploiting advances in data mining and statistics by using machine learning in 62 healthy subjects and 19 patients with MDD, which were scanned with PET using the radioligand [carbonyl-(11)C]WAY-100635...
June 13, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28523547/dna-methylation-in-major-depressive-disorder
#9
Ehsan Pishva, Bart P F Rutten, Daniel van den Hove
Epigenetic mechanisms regulate gene expression, influencing protein levels and ultimately shaping phenotypes during life. However, both stochastic epigenetic variations and environmental reprogramming of the epigenome might influence neurodevelopment and ageing, and this may contribute to the origins of mental ill-health. Studying the role of epigenetic mechanisms is challenging, as genotype-, tissue- and cell type-dependent epigenetic changes have to be taken into account, while the nature of mental disorders also poses significant challenges for linking them with biological profiles...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28523546/histone-modifications-in-major-depressive-disorder-and-related-rodent-models
#10
Jan M Deussing, Mira Jakovcevski
Major depressive disorder (MDD) is a multifactorial disease, weakly linked to multiple genetic risk factors. In contrast to that, environmental factors and "gene × environment" interaction between specific risk genes and environmental factors, such as severe or early stress exposure, have been strongly linked to MDD vulnerability. Stressors can act on the interface between an organism and the environment, the epigenome. The molecular foundation for the impact of stressors on the risk to develop MDD is based on the hormonal stress response itself: the glucocorticoid receptor (GR, encoded by NR3C1)...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28516431/a-comparison-of-neuroimaging-abnormalities-in-multiple-sclerosis-major-depression-and-chronic-fatigue-syndrome-myalgic-encephalomyelitis-is-there-a-common-cause
#11
REVIEW
Gerwyn Morris, Michael Berk, Basant K Puri
There is copious evidence of abnormalities in resting-state functional network connectivity states, grey and white matter pathology and impaired cerebral perfusion in patients afforded a diagnosis of multiple sclerosis, major depression or chronic fatigue syndrome (CFS) (myalgic encephalomyelitis). Systemic inflammation may well be a major element explaining such findings. Inter-patient and inter-illness variations in neuroimaging findings may arise at least in part from regional genetic, epigenetic and environmental variations in the functions of microglia and astrocytes...
May 17, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28491024/the-serotonin-transporter-and-early-life-stress-translational-perspectives
#12
REVIEW
Danielle J Houwing, Bauke Buwalda, Eddy A van der Zee, Sietse F de Boer, Jocelien D A Olivier
The interaction between the serotonin transporter (SERT) linked polymorphic region (5-HTTLPR) and adverse early life stressing (ELS) events is associated with enhanced stress susceptibility and risk to develop mental disorders like major depression, anxiety, and aggressiveness. In particular, human short allele carriers are at increased risk. This 5-HTTLPR polymorphism is absent in the rodent SERT gene, but heterozygous SERT knockout rodents (SERT(+/-)) show several similarities to the human S-allele carrier, therefore creating an animal model of the human situation...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28443631/a-peripheral-epigenetic-signature-of-immune-system-genes-is-linked-to-neocortical-thickness-and-memory
#13
Virginie Freytag, Tania Carrillo-Roa, Annette Milnik, Philipp G Sämann, Vanja Vukojevic, David Coynel, Philippe Demougin, Tobias Egli, Leo Gschwind, Frank Jessen, Eva Loos, Wolfgang Maier, Steffi G Riedel-Heller, Martin Scherer, Christian Vogler, Michael Wagner, Elisabeth B Binder, Dominique J-F de Quervain, Andreas Papassotiropoulos
Increasing age is tightly linked to decreased thickness of the human neocortex. The biological mechanisms that mediate this effect are hitherto unknown. The DNA methylome, as part of the epigenome, contributes significantly to age-related phenotypic changes. Here, we identify an epigenetic signature that is associated with cortical thickness (P=3.86 × 10(-8)) and memory performance in 533 healthy young adults. The epigenetic effect on cortical thickness was replicated in a sample comprising 596 participants with major depressive disorder and healthy controls...
April 26, 2017: Nature Communications
https://www.readbyqxmd.com/read/28400482/epigenetic-programming-of-the-neuroendocrine-stress-response-by-adult-life-stress
#14
Bart Dirven, Judith Homberg, Tamas Kozicz, Marloes Henckens
The hypothalamic-pituitary adrenal (HPA) axis is critically involved in the neuroendocrine regulation of stress adaptation, and the restoration of homeostasis following stress exposure. Dysregulation of this axis is associated with stress-related pathologies like major depressive disorder, post-traumatic stress disorder, panic disorder, and chronic anxiety. It has long been understood that stress during early life can have a significant lasting influence on the development of the neuroendocrine system and its neural regulators, partially by modifying epigenetic regulation of gene expression, with implications for health and well-being in later life...
April 11, 2017: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/28397115/neural-substrates-of-depression-and-resilience
#15
REVIEW
Ming-Hu Han, Eric J Nestler
There is an urgent need for more effective medications to treat major depressive disorder, as fewer than half of depressed patients achieve full remission and many are not responsive with currently available antidepressant medications or psychotherapy. It is known that prolonged stressful events are an important risk factor for major depressive disorder. However, there are prominent individual variations in response to stress: a relatively small proportion of people (10-20%) experiencing prolonged stress develop stress-related psychiatric disorders, including depression (susceptibility to stress), whereas most stress-exposed individuals maintain normal psychological functioning (resilience to stress)...
July 2017: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/28389369/prenatal-stress-and-depression-associated-neuronal-development-in-neonates
#16
REVIEW
Mahino Fatima, Saurabh Srivastav, Amal Chandra Mondal
Prenatal maternal depression has its direct effects on early brain development deficits with permanent changes in neuroendocrine functions and impaired behavior in offsprings. Prenatal stress (PS) transmits its affect on developing fetus and on pregnancy outcomes in adult offsprings. This results in impaired neurodevelopment, delayed cognitive and motor development with impaired behavior towards stressful conditions. There are sufficient evidences in animal models suggesting depression responsive hypothalamic-pituitary-adrenal (HPA) axis and its hormonal response via cortisol, responsible for its critical effects in both the mother and offspring...
August 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28314819/depressive-like-behaviors-are-regulated-by-nox1-nadph-oxidase-by-redox-modification-of-nmda-receptor-1
#17
Masakazu Ibi, Junjie Liu, Noriaki Arakawa, Shiho Kitaoka, Ai Kawaji, Ken-Ichi Matsuda, Kazumi Iwata, Misaki Matsumoto, Masato Katsuyama, Kai Zhu, Satoshi Teramukai, Tomoyuki Furuyashiki, Chihiro Yabe-Nishimura
Involvement of reactive oxygen species (ROS) has been suggested in the development of psychiatric disorders. NOX1 is a nonphagocytic form of NADPH oxidase whose expression in the nervous system is negligible compared with other NOX isoforms. However, NOX1-derived ROS increase inflammatory pain and tolerance to opioid analgesia. To clarify the role of NOX1 in the brain, we examined depressive-like behaviors in mice deficient in Nox1 (Nox1(-/Y)). Depressive-like behaviors induced by chronic social defeat stress or administration of corticosterone (CORT) were significantly ameliorated in Nox1(-/Y) Generation of ROS was significantly elevated in the prefrontal cortex (PFC) of mice administrated with CORT, while NOX1 mRNA was upregulated only in the ventral tegmental area (VTA) among brain areas responsible for emotional behaviors...
April 12, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28293733/type-a-monoamine-oxidase-and-serotonin-are-coordinately-involved-in-depressive-disorders-from-neurotransmitter-imbalance-to-impaired-neurogenesis
#18
REVIEW
Makoto Naoi, Wakako Maruyama, Masayo Shamoto-Nagai
Type A monoamine oxidase (MAOA) catabolizes monoamine transmitters, serotonin, norepinephrine and dopamine, and plays a major role in the onset, progression and therapy of neuropsychiatric disorders. In depressive disorders, increase in MAOA expression and decrease in brain levels of serotonin and norepinephrine are proposed as the major pathogenic factors. The functional polymorphism of MAOA gene and genes in serotonin signal pathway are associated with depression. This review presents recent advance in studies on the role of MAOA in major depressive disorder and related emotional disorders...
March 14, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28246044/dna-methylation-and-expression-of-stress-related-genes-in-pbmc-of-mdd-patients-with-and-without-serious-suicidal-ideation
#19
Bhaskar Roy, Richard C Shelton, Yogesh Dwivedi
Stress plays an important role in major depressive disorder (MDD) and is one of the state dependent factors in suicidal behavior. A dysfunctional hypothalamic-pituitary-adrenal axis is a common feature in this disorder. The involvement of environmental factors has added additional complexity to understanding depression or suicidal behavior. In this regard, epigenetic regulation has been considered a mechanistic interface between environmental stress stimuli and altered functioning of underlying gene network that may increase susceptibility to depression or suicidal behavior...
June 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28198448/influence-of-fkbp5-polymorphism-and-dna-methylation-on-structural-changes-of-the-brain-in-major-depressive-disorder
#20
Kyu-Man Han, Eunsoo Won, Youngbo Sim, June Kang, Changsu Han, Yong-Ku Kim, Seung-Hyun Kim, Sook-Haeng Joe, Min-Soo Lee, Woo-Suk Tae, Byung-Joo Ham
A single nucleotide polymorphism of rs1360780 in the FKBP5 gene is associated with a predisposition to developing major depressive disorder (MDD). We investigated the interactive effects of FKBP5 rs1360780 allelic variants, DNA methylation, and the diagnosis of MDD on structural changes of the entire brain. One hundred and fourteen patients with MDD and eighty-eight healthy controls underwent T1-weighted structural magnetic resonance imaging and FKBP5 rs1360780 genotyping, including DNA methylation of intron 7...
February 15, 2017: Scientific Reports
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