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https://www.readbyqxmd.com/read/28867940/genetics-of-generalized-anxiety-disorder-and-related-traits
#1
Michael G Gottschalk, Katharina Domschke
This review serves as a systematic guide to the genetics of generalized anxiety disorder (GAD) and further focuses on anxiety-relevant endophenotypes, such as pathological worry fear of uncertainty, and neuroticism. We inspect clinical genetic evidence for the familialityl heritability of GAD and cross-disorder phenotypes based on family and twin studies. Recent advances of linkage studies, genome-wide association studies, and candidate gene studies (eg, 5-HTT, 5-HT1A, MAOA, BDNF) are outlined. Functional and structural neuroimaging and neurophysiological readouts relating to peripheral stress markers and psychophysiology are further integrated, building a multilevel disease framework...
June 2017: Dialogues in Clinical Neuroscience
https://www.readbyqxmd.com/read/28862601/-comparative-analysis-of-expression-of-genes-encoding-enzymes-of-catecholamine-catabolism-and-renalase-in-tissues-of-normotensive-and-hypertensive-rats
#2
V I Fedchenko, A E Medvedev
Comparative analysis of expression of genes encoding enzymes of catecholamine catabolism (monoaminbe oxidases A and B (MAO A and MAO B) and catechol-O-methyl transferase (COMT)) and renalase has been carried out in tissues of normotensive Wistar-Kyoto (WKY) rats and spontaneously hypertensive rats (SHR). Among investigated tissues the highest level of mRNA of genes encoding key enzymes of catecholamine catabolism (MAO A, MAO B, COMT) was found in the heart of WKY rats. In SHR the mRNA levels of these genes were lower (p<0...
July 2017: Biomedit︠s︡inskai︠a︡ Khimii︠a︡
https://www.readbyqxmd.com/read/28858992/the-genotypes-and-methylation-of-mao-genes-as-factors-behind-smoking-behavior
#3
Emmi M Tiili, Natalia V Mitiushkina, Olga A Sukhovskaya, Evgeny N Imyanitov, Ari P Hirvonen
OBJECTIVE: Smoking dependence is the main cause for tobacco-related illnesses. The addiction-causing substance in tobacco, nicotine, acts through the dopamine pathway in the brain, causing several pleasurable experiences through cigarette smoking. Thus, both genetic and epigenetic factors related to dopamine metabolism may play an important role in influencing an individual's smoking behavior. MATERIALS AND METHODS: We studied the 1460 C/T variation and the variable number tandem repeat polymorphism in the MAOA gene and A/G variation in intron 13 in the MAOB gene together with four DNA methylation sites in both of these genes in relation to several smoking-related phenotypes in a study population of 1230 Whites of Russian origin...
August 29, 2017: Pharmacogenetics and Genomics
https://www.readbyqxmd.com/read/28821809/impact-of-varying-social-experiences-during-life-history-on-behaviour-gene-expression-and-vasopressin-receptor-gene-methylation-in-mice
#4
Carina Bodden, Daniel van den Hove, Klaus-Peter Lesch, Norbert Sachser
Both negative and positive social experiences during sensitive life phases profoundly shape brain and behaviour. Current research is therefore increasingly focusing on mechanisms mediating the interaction between varying life experiences and the epigenome. Here, male mice grew up under either adverse or beneficial conditions until adulthood, when they were subdivided into groups exposed to situations that either matched or mismatched previous conditions. It was investigated whether the resulting four life histories were associated with changes in anxiety-like behaviour, gene expression of selected genes involved in anxiety and stress circuits, and arginine vasopressin receptor 1a (Avpr1a) gene methylation...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28742514/the-importance-of-biochemical-and-genetic-findings-in-the-diagnosis-of-atypical-norrie-disease
#5
Ana Rodríguez-Muñoz, Gema García-García, Francisco Menor, José M Millán, Miguel Tomás-Vila, Teresa Jaijo
BACKGROUND: Norrie disease (ND) is a rare X-linked disorder characterized by bilateral congenital blindness. ND is caused by a mutation in the Norrie disease pseudoglioma (NDP) gene, which encodes a 133-amino acid protein called norrin. Intragenic deletions including NDP and adjacent genes have been identified in ND patients with a more severe neurologic phenotype. We report the biochemical, molecular, clinical and radiological features of two unrelated affected males with a deletion including NDP and MAO genes...
July 25, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28716530/genetic-association-analysis-of-serotonin-and-signal-transduction-pathways-in-suicide-attempters-from-an-italian-sample-of-psychiatric-patients
#6
Maurizio Pompili, Giovanna Gentile, Catia Scassellati, Cristian Bonvicini, Marco Innamorati, Denise Erbuto, Franco Montebovi, Giuseppe Ducci, Alberto Forte, Eleonora De Pisa, Stefano Ferracuti, Gianluca Serafini, Vincenzo De Luca, Mario Amore, Maurizio Simmaco, Paolo Girardi
Genetic factors have been reported to contribute to the liability of suicide. We aimed to investigate functional polymorphisms in eight genes (serotonin transporter, SLC6A4; receptors, 5HTR1A, 1B, 5HTR2A; Tryptophan Hydroxylase, TPH1, TPH2; Monoamine Oxidase, MAOA and G Protein Subunit Beta 3, GNB3) to investigate their predictive value for suicide. The possible confounding effects of gender and phenotypic patients dissection were also valued. A sample of 111 consecutive psychiatric inpatients was recruited and assessed using specific psychometric instruments...
July 14, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28712090/does-prior-traumatization-affect-the-treatment-outcome-of-cbt-for-panic-disorder-the-potential-role-of-the-maoa-gene-and-depression-symptoms
#7
Sebastian Trautmann, Jan Richter, Markus Muehlhan, Michael Höfler, Hans-Ulrich Wittchen, Katharina Domschke, Andreas Ströhle, Alfons O Hamm, Heike Weber, Tilo Kircher, Volker Arolt, Alexander L Gerlach, Georg W Alpers, Thomas Fydrich, Thomas Lang, Andreas Reif
Although cognitive behavioral therapy (CBT) is highly effective in the treatment of anxiety disorders, many patients still do not benefit. This study investigates whether a history of traumatic event experience is negatively associated with outcomes of CBT for panic disorder. The moderating role of the monoamine oxidase A (MAOA) gene and depression symptoms as well as the association between trauma history and fear reactivity as a potential mechanism are further analyzed. We conducted a post-hoc analysis of 172 male and 60 female patients with panic disorder treated with CBT in a multi-center study...
July 15, 2017: European Archives of Psychiatry and Clinical Neuroscience
https://www.readbyqxmd.com/read/28673475/associations-of-multiple-trauma-types-and-maoa-with-severe-aggressive-behavior-and-maoa-effects-on-training-outcome
#8
Danique Smeijers, Erik Bulten, Barbara Franke, Jan Buitelaar, Robbert-Jan Verkes
Previous research showed that the disposition to react with disproportionate aggression in adults is influenced by an interaction between a variant in the X-chromosomal monoamine oxidase A gene (MAOA) and early traumatic events. Such studies have often focused on a single type of trauma, whereas we know that experiencing multiple trauma types is associated with more detrimental consequences. The differential susceptibility hypothesis suggests that individuals who are most susceptible to adversity, are also most likely to benefit from supportive experiences in childhood...
July 1, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28617549/identification-of-genes-associated-with-lung-cancer-by-bioinformatics-analysis
#9
J Li, H Yu, Y-F Ma, M Zhao, J Tang
OBJECTIVE: This study was aimed to explore the underlying genes associated with lung cancer (LC) by bioinformatics analysis. DATA AND METHODS: Gene expression profile GSE2514 was downloaded from the Gene Expression Omnibus database. Twenty lung and nineteen para-carcinoma tissue samples were used to identify the differentially expressed genes (DEGs) by paired t-test. Pathway enrichment analysis of DEGs was performed, followed by the construction of protein-protein interaction (PPI) network...
May 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28595673/neonatal-dna-methylation-and-early-onset-conduct-problems-a-genome-wide-prospective-study
#10
Charlotte A M Cecil, Esther Walton, Sara R Jaffee, Tom O'Connor, Barbara Maughan, Caroline L Relton, Rebecca G Smith, Wendy McArdle, Tom R Gaunt, Isabelle Ouellet-Morin, Edward D Barker
Early-onset conduct problems (CP) are a key predictor of adult criminality and poor mental health. While previous studies suggest that both genetic and environmental risks play an important role in the development of early-onset CP, little is known about potential biological processes underlying these associations. In this study, we examined prospective associations between DNA methylation (cord blood at birth) and trajectories of CP (4-13 years), using data drawn from the Avon Longitudinal Study of Parents and Children...
June 9, 2017: Development and Psychopathology
https://www.readbyqxmd.com/read/28537235/-serotonergic-genes-in-the-development-of-anxiety-depression-like-state-and-pathology-of-aggressive-behavior-in-male-mice-rna-seq-data
#11
N N Kudryavtseva, D A Smagin, I L Kovalenko, A G Galyamina, G B Vishnivetskaya, V N Babenko, Yu L Orlov
In course of daily agonistic interactions, mice tend to stratify into those with chronic social defeats and those that repeatedly display aggression, which lead to the development of mixed anxiety/depression-like state and the pathology of aggressive behavior, respectively. Using the data of whole transcriptome analysis (RNA-seq), the changes in the expression of serotonergic genes involved in the synthesis, inactivation, and reception of serotonin, as well as of the Creb1 (transcription factor) gene and the Bdnf (brain-derived neurotrophic factor) gene were detected in the striatum (STR), ventral tegmental area (VTA), midbrain raphe nuclei (MRN), hypothalamus (HYP), and hippocampus (HIP) of defeated and aggressive male mice...
March 2017: Molekuliarnaia Biologiia
https://www.readbyqxmd.com/read/28460913/molecular-and-mycotoxigenic-biodiversity-of-aspergillus-flavus-isolated-from-brazil-nuts
#12
Arianne Costa Baquião, Evandro Luiz Lopes, Benedito Corrêa
The objective of this study was to carry out a transcription analysis of eight genes belonging to the aflatoxin (AF) and cyclopiazonic acid (CPA) biosynthesis pathway, and to detect aflatoxin B1 (AFB1) and CPA production in Aspergillus flavus strains isolated from Brazil nuts. Additionally, these genes were correlated with the different mycotoxigenic profiles of the same strains. Four previously identified A. flavus strains (ICB-01, ICB-151, ICB-161, and ICB-165) were grown on Brazil nut agar at 25°C for 10days...
November 2016: Food Research International
https://www.readbyqxmd.com/read/28413107/upregulation-of-maoa-in-the-hippocampus-results-in-delayed-depressive-like-behaviors-in-burn-mice
#13
Wang Zhen, Rong Xinzhou, Chen Lu, Wang Xuemin
OBJECTIVE: To observe depressive-like behavior and hippocampus monoamine oxidase A (MAOA) changes in burned mice. METHODS: We tested depression and anxiety like behaviors of burn C57 mice with the sucrose preference test, forced swimming test (FST), open field test and elevated plus maze test and then detected the MAOA content and MAOA gene transcriptional levels in the hippocampus with western blot analysis and real-time quantitative PCR analysis. We then sought to reverse depressive-like behavior of burned mice with an MAOA inhibitor...
April 13, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28402333/maoa-a-novel-decision-maker-of-apoptosis-and-autophagy-in-hormone-refractory-neuroendocrine-prostate-cancer-cells
#14
Yi-Cheng Lin, Yi-Ting Chang, Mel Campbell, Tzu-Ping Lin, Chin-Chen Pan, Hsin-Chen Lee, Jean C Shih, Pei-Ching Chang
Autophagy and apoptosis are two well-controlled mechanisms regulating cell fate. An understanding of decision-making between these two pathways is in its infancy. Monoamine oxidase A (MAOA) is a mitochondrial enzyme that is well-known in psychiatric research. Emerging reports showed that overexpression MAOA is associated with prostate cancer (PCa). Here, we show that MAOA is involved in mediating neuroendocrine differentiation of PCa cells, a feature associated with hormone-refractory PCa (HRPC), a lethal type of disease...
April 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28321510/dna-methylation-patterns-of-behavior-related-gene-promoter-regions-dissect-the-gray-wolf-from-domestic-dog-breeds
#15
Zsofia Banlaki, Giulia Cimarelli, Zsofia Viranyi, Eniko Kubinyi, Maria Sasvari-Szekely, Zsolt Ronai
A growing body of evidence highlights the relationship between epigenetics, especially DNA methylation, and population divergence as well as speciation. However, little is known about how general the phenomenon of epigenetics-wise separation of different populations is, or whether population assignment is, possible based on solely epigenetic marks. In the present study, we compared DNA methylation profiles between four different canine populations: three domestic dog breeds and their ancestor the gray wolf...
June 2017: Molecular Genetics and Genomics: MGG
https://www.readbyqxmd.com/read/28315323/increased-serotonin-signaling-contributes-to-the-warburg-effect-in-pancreatic-tumor-cells-under-metabolic-stress-and-promotes-growth-of-pancreatic-tumors-in-mice
#16
Shu-Heng Jiang, Jun Li, Fang-Yuan Dong, Jian-Yu Yang, De-Jun Liu, Xiao-Mei Yang, Ya-Hui Wang, Min-Wei Yang, Xue-Liang Fu, Xiao-Xin Zhang, Qing Li, Xiu-Feng Pang, Yan-Miao Huo, Jiao Li, Jun-Feng Zhang, Ho-Young Lee, Su-Jae Lee, Wen-Xin Qin, Jian-Ren Gu, Yong-Wei Sun, Zhi-Gang Zhang
BACKGROUND & AIMS: Desmoplasia and poor vascularity cause severe metabolic stress in pancreatic ductal adenocarcinomas (PDACs). Serotonin (5-HT) is a neuromodulator with neurotransmitter and neuroendocrine functions that contributes to tumorigenesis. We investigated the role of 5-HT signaling in the growth of pancreatic tumors. METHODS: We measured the levels of proteins that regulate 5-HT synthesis, packaging, and degradation in pancreata from Kras(G12D/+)/Trp53(R172H/+)/Pdx1-Cre (KPC) mice, which develop pancreatic tumors, as well as in PDAC cell lines and a tissue microarray containing 81 human PDAC samples...
July 2017: Gastroenterology
https://www.readbyqxmd.com/read/28293733/type-a-monoamine-oxidase-and-serotonin-are-coordinately-involved-in-depressive-disorders-from-neurotransmitter-imbalance-to-impaired-neurogenesis
#17
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/28259004/age-dependent-role-of-pre-and-perinatal-factors-in-interaction-with-genes-on-adhd-symptoms-across-adolescence
#18
Djûke M Brinksma, Pieter J Hoekstra, Barbara van den Hoofdakker, Annelies de Bildt, Jan K Buitelaar, Catharina A Hartman, Andrea Dietrich
Little is known about the effects of risk factors on attention-deficit/hyperactivity disorder (ADHD) symptom over time. Here, we longitudinally studied the role of candidate genes, pre- and perinatal factors, and their interactions on ADHD symptoms between ages 10 and 18 years. Subjects were part of the general population or clinic-referred cohort of the TRacking Adolescents' Individual Lives Survey (n = 1667). At mean ages of 11.1 (T1), 13.4 (T2), and 16.2 years (T3), ADHD symptoms were assessed with the Child Behavior Checklist...
July 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28242040/molecular-biomarkers-predictive-of-sertraline-treatment-response-in-young-children-with-fragile-x-syndrome
#19
Reem Rafik AlOlaby, Stefan R Sweha, Marisol Silva, Blythe Durbin-Johnson, Carolyn M Yrigollen, Dalyir Pretto, Randi J Hagerman, Flora Tassone
OBJECTIVES: Several neurotransmitters involved in brain development are altered in fragile X syndrome (FXS), the most common monogenic cause of autism spectrum disorder (ASD). Serotonin plays a vital role in synaptogenesis and postnatal brain development. Deficits in serotonin synthesis and abnormal neurogenesis were shown in young children with autism, suggesting that treating within the first years of life with a selective serotonin reuptake inhibitor might be the most effective time...
June 2017: Brain & Development
https://www.readbyqxmd.com/read/28203149/gene-gene-environment-interactions-of-serotonin-transporter-monoamine-oxidase-a-and-childhood-maltreatment-predict-aggressive-behavior-in-chinese-adolescents
#20
Yun Zhang, Qing-Sen Ming, Jin-Yao Yi, Xiang Wang, Qiao-Lian Chai, Shu-Qiao Yao
Gene-environment interactions that moderate aggressive behavior have been identified independently in the serotonin transporter (5-HTT) gene and monoamine oxidase A gene (MAOA). The aim of the present study was to investigate epistasis interactions between MAOA-variable number tandem repeat (VNTR), 5-HTTlinked polymorphism (LPR) and child abuse and the effects of these on aggressive tendencies in a group of otherwise healthy adolescents. A group of 546 Chinese male adolescents completed the Child Trauma Questionnaire and Youth self-report of the Child Behavior Checklist...
2017: Frontiers in Behavioral Neuroscience
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