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https://www.readbyqxmd.com/read/28321510/dna-methylation-patterns-of-behavior-related-gene-promoter-regions-dissect-the-gray-wolf-from-domestic-dog-breeds
#1
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...
March 21, 2017: Molecular Genetics and Genomics: MGG
https://www.readbyqxmd.com/read/28316763/serotonin-transporter-gene-slc6a4-polymorphism-and-mucosal-serotonin-levels-in-southeastern-iranian-patients-with-irritable-bowel-syndrome
#2
Mojgan Mohammadi, Hossein Tahmasebi Abdar, Hamid Reza Mollaei, Hossein Hajghani, Mohammad Reza Baneshi, Mohammad Mahdi Hayatbakhsh
BACKGROUND Irritable bowel syndrome (IBS) is a digestive system disorder with an unknown etiology. Serotonin has a key role in the secretion and motility of the intestine. Polymorphism in serotonin re-uptake transporter (SERT or SLC6A4) gene may have a functional role in the gut of patients with IBS. The aims of the present study were to investigate the association between SLC6A4 gene polymorphism and IBS and to detect the correlation between rectal serotonin levels and IBS sub-types. METHODS SLC6A4 gene polymorphism in 131 patients with IBS and 211 healthy controls were analysed using the quantitative polymerase chain reaction high-resolution melting (qPCR-HRM) curve technique...
January 2017: Middle East Journal of Digestive Diseases
https://www.readbyqxmd.com/read/28291238/polymorphisms-of-5-htt-lpr-and-gn%C3%AE-3-825c-t-and-response-to-antidepressant-treatment-in-functional-dyspepsia-a-study-from-the-functional-dyspepsia-treatment-trial
#3
Yuri A Saito, G Richard Locke, Ann E Almazar, Ernest P Bouras, Colin W Howden, Brian E Lacy, John K DiBaise, Charlene M Prather, Bincy P Abraham, Hashem B El-Serag, Paul Moayyedi, Linda M Herrick, Lawrence A Szarka, Michael Camilleri, Frank A Hamilton, Cathy D Schleck, Katherine E Tilkes, Alan R Zinsmeister, Nicholas J Talley
OBJECTIVES: The Functional Dyspepsia Treatment Trial reported that amitriptyline (AMI) was associated with adequate relief of functional dyspepsia (FD) symptoms, but the pharmacogenetics of antidepressant response in FD are not known. GNβ3 825C>T CC genotype has been previously linked to FD and TT genotype to antidepressant response in depression. The ss genotype of the 5-HTT LPR variant of the serotonin transporter gene (SLC6A4) has been linked to selective serotonin reuptake inhibitor (SSRI) response...
March 14, 2017: American Journal of Gastroenterology
https://www.readbyqxmd.com/read/28288906/an-aop-analysis-of-selective-serotonin-reuptake-inhibitors-ssris-for-fish
#4
REVIEW
M Danielle McDonald
Pharmaceuticals and personal care products (PPCPs) are found in measureable quantities within the aquatic environment. Selective serotonin reuptake inhibitor (SSRI) antidepressants are one class of pharmaceutical compound that has received a lot of attention. Consistent with most PPCPs, the pharmacokinetics and physiological impacts of SSRI treatment have been well-studied in small mammals and humans and this, combined with the evolutionary conservation of the serotonergic system across vertebrates, allows for the read-across of known SSRI effects in mammals to potential SSRI impacts on aquatic organisms...
March 10, 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/28272115/further-evidence-for-genetic-variation-at-the-serotonin-transporter-gene-slc6a4-contributing-toward-anxiety
#5
Andreas J Forstner, Stefanie Rambau, Nina Friedrich, Kerstin U Ludwig, Anne C Böhmer, Elisabeth Mangold, Anna Maaser, Timo Hess, Alexandra Kleiman, Antje Bittner, Markus M Nöthen, Jessica Becker, Franziska Geiser, Johannes Schumacher, Rupert Conrad
OBJECTIVES: Social anxiety disorder (SAD) is a common and heritable psychiatric disorder. However, genetic studies in SAD are rare and only a few candidate genes have been implicated so far. In the present study, we investigated whether single-nucleotide polymorphisms (SNPs) associated with other psychiatric disorders also contribute toward the development of SAD and followed up variants associated with SAD on the phenotypic level. PATIENTS AND METHODS: We genotyped a total of 24 SNPs in a German sample of 321 SAD patients and 804 controls...
March 7, 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28262188/effects-of-the-serotonin-transporter-gene-sensitivity-of-response-to-alcohol-and-parental-monitoring-on-risk-for-problem-alcohol-use
#6
Lora M Cope, Emily C Munier, Elisa M Trucco, Jillian E Hardee, Margit Burmeister, Robert A Zucker, Mary M Heitzeg
The serotonin transporter-linked polymorphic region (5-HTTLPR) of the serotonin transporter gene (SLC6A4) has been previously associated with alcohol-related risk. Most findings point to short (S) allele carriers being at increased risk for negative alcohol outcomes relative to long allele homozygotes, although some work indicates a more complex relationship. The current prospective study aimed to clarify how and under what circumstances variations in 5-HTTLPR transmit risk for various alcohol-related outcomes...
March 2017: Alcohol
https://www.readbyqxmd.com/read/28260899/gene-expression-based-biological-test-for-major-depressive-disorder-an-advanced-study
#7
Shin-Ya Watanabe, Shusuke Numata, Jun-Ichi Iga, Makoto Kinoshita, Hidehiro Umehara, Kazuo Ishii, Tetsuro Ohmori
PURPOSE: Recently, we could distinguished patients with major depressive disorder (MDD) from nonpsychiatric controls with high accuracy using a panel of five gene expression markers (ARHGAP24, HDAC5, PDGFC, PRNP, and SLC6A4) in leukocyte. In the present study, we examined whether this biological test is able to discriminate patients with MDD from those without MDD, including those with schizophrenia and bipolar disorder. PATIENTS AND METHODS: We measured messenger ribonucleic acid expression levels of the aforementioned five genes in peripheral leukocytes in 17 patients with schizophrenia and 36 patients with bipolar disorder using quantitative real-time polymerase chain reaction (PCR), and we combined these expression data with our previous expression data of 25 patients with MDD and 25 controls...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28245280/serotonin-transporter-gene-slc6a4-polymorphism-and-susceptibility-to-a-home-visiting-maternal-infant-attachment-intervention-delivered-by-community-health-workers-in-south-africa-reanalysis-of-a-randomized-controlled-trial
#8
Barak Morgan, Robert Kumsta, Pasco Fearon, Dirk Moser, Sarah Skeen, Peter Cooper, Lynne Murray, Greg Moran, Mark Tomlinson
BACKGROUND: Clear recognition of the damaging effects of poverty on early childhood development has fueled an interest in interventions aimed at mitigating these harmful consequences. Psychosocial interventions aimed at alleviating the negative impacts of poverty on children are frequently shown to be of benefit, but effect sizes are typically small to moderate. However, averaging outcomes over an entire sample, as is typically done, could underestimate efficacy because weaker effects on less susceptible individuals would dilute estimation of effects on those more disposed to respond...
February 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28192769/disorganization-at-the-stage-of-schizophrenia-clinical-outcome-clinical-biological-study
#9
A Nestsiarovich, V Obyedkov, H Kandratsenka, M Siniauskaya, I Goloenko, N Waszkiewicz
BACKGROUND: According to the multidimensional model of schizophrenia, three basic psychopathological dimensions constitute its clinical structure: positive symptoms, negative symptoms and disorganization. The latter one is the newest and the least studied. Our aim was to discriminate disorganization in schizophrenia clinical picture and to identify its distinctive biological and socio-psychological particularities and associated genetic and environmental factors. METHODS: We used SAPS/SANS psychometrical scales, scales for the assessment of patient's compliance, insight, social functioning, life quality...
December 30, 2016: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/28190415/a-potential-role-of-the-5-httlpr-polymorphism-in-self-reported-executive-functioning
#10
Margarita V Alfimova, Vera Golimbet, Tatyana Lezheiko, Galina Korovaitseva
Intense effort is directed toward searching for associations between genes and neuropsychological measures of executive functions. In contrast, the impact of genetic polymorphisms on self-rating of everyday executive functioning has not been investigated so far. This study was designed to test associations of self-reported executive functioning, measured with the Behavior Rating Inventory of Executive Function (BRIEF-A), with dopaminergic and serotoninergic genes in non-clinical population and to assess impact of neuropsychological and personality characteristics on these associations...
February 13, 2017: Spanish Journal of Psychology
https://www.readbyqxmd.com/read/28137459/systematic-review-and-meta-analysis-of-genetic-studies-of-late-life-depression
#11
REVIEW
Ruby S M Tsang, Karen A Mather, Perminder S Sachdev, Simone Reppermund
Late-life depression (LLD) is thought to be multifactorial in etiology, including a significant genetic component. While a number of candidate gene studies have been carried out, results remain inconclusive. We undertook a systematic review of all genetic association studies of depression or depressive symptoms in late life published before February 2016, and performed meta-analyses on polymorphisms investigated in three or more independent studies. A total of 46 candidate gene studies examining 56 polymorphisms in 23 genes as well as a genome-wide association study (GWAS) were included...
January 27, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28113514/effective-natural-pcr-rflp-primer-design-for-snp-genotyping-using-teaching-learning-based-optimization-with-elite-strategy
#12
Yu-Huei Cheng, Che-Nan Kuo, Ching-Ming Lai
mination of genetic variations of SNPs between members of a species. In many laboratories, PCR-RFLP (polymerase chain reaction-restriction fragment length polymorphism) is a usually used biotechnology for SNP genotyping, especially in small-scale basic research studies of complex genetic diseases. PCR-RFLP requires an available restriction enzyme at least for identify a target SNP and an effective primer pair conforms numerous constraints. However, the lots of restriction enzymes, tedious sequence and complicated constraints make the mining of available restriction enzymes and the design of effective primer pairs become a major challenge...
August 3, 2016: IEEE Transactions on Nanobioscience
https://www.readbyqxmd.com/read/28068779/norepinephrine-transporter-gene-variants-and-remission-from-depression-with-venlafaxine-treatment-in-older-adults
#13
Victoria S Marshe, Malgorzata Maciukiewicz, Soham Rej, Arun K Tiwari, Etienne Sibille, Daniel M Blumberger, Jordan F Karp, Eric J Lenze, Charles F Reynolds, James L Kennedy, Benoit H Mulsant, Daniel J Müller
OBJECTIVE: The primary objective of this study was to investigate five putatively functional variants of the norepinephrine transporter (SLC6A2, NET) and serotonin transporter (SLC6A4, SERT) genes and remission in depressed older adults treated with venlafaxine. A secondary objective was to analyze 17 other variants in serotonergic system genes (HTR1A, HTR2A, HTR1B, HTR2C, TPH1, TPH2) potentially involved in the mechanism of action of venlafaxine. METHOD: The sample included 350 adults age 60 or older with DSM-IV-defined major depressive disorder and a score of at least 15 on the Montgomery-Åsberg Depression Rating Scale (MADRS)...
January 10, 2017: American Journal of Psychiatry
https://www.readbyqxmd.com/read/28063933/dna-methylation-and-clinical-response-to-antidepressant-medication-in-major-depressive-disorder-a-review-and-recommendations
#14
REVIEW
Amanda J Lisoway, Clement C Zai, Arun K Tiwari, James L Kennedy
Antidepressant medications are the most common treatment for major depression and related disorders. Pharmacogenetic studies have demonstrated that response to these medications is associated with genetic variation. While these studies have been invaluable they have yet to explain why a significant number of patients do not respond to their initial medication. The epigenetic modification known as DNA methylation has recently been studied in the context of antidepressant treatment response. As such, the purpose of this article is to review the advances made in the relatively new field of pharmaco-epigenetics of antidepressant response...
January 4, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/27998510/stress-burnout-and-depression-a-systematic-review-on-dna-methylation-mechanisms
#15
REVIEW
Jelena Bakusic, Wilmar Schaufeli, Stephan Claes, Lode Godderis
Despite that burnout presents a serious burden for modern society, there are no diagnostic criteria. Additional difficulty is the differential diagnosis with depression. Consequently, there is a need to dispose of a burnout biomarker. Epigenetic studies suggest that DNA methylation is a possible mediator linking individual response to stress and psychopathology and could be considered as a potential biomarker of stress-related mental disorders. Thus, the aim of this review is to provide an overview of DNA methylation mechanisms in stress, burnout and depression...
January 2017: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/27989490/paraphilic-sexual-offenders-do-not-differ-from-control-subjects-with-respect-to-dopamine-and-serotonin-related-genetic-polymorphisms
#16
Andrzej Jakubczyk, Aleksandra Krasowska, Marcin Bugaj, Maciej Kopera, Anna Klimkiewicz, Agata Łoczewska, Aneta Michalska, Aleksandra Majewska, Natalia Szejko, Anna Podgórska, Małgorzata Sołowiej, Leszek Markuszewski, Sławomir Jakima, Rafał Płoski, Kirk Brower, Marcin Wojnar
INTRODUCTION: Rape and pedophilic child molestation are the most commonly convicted sexual offenses in Poland. Recent studies have suggested a possible genetic contribution toward pathologic sexual interests and behaviors. AIM: To analyze and compare functional polymorphisms of genes associated with the activity of the serotonin and dopamine systems in a group of paraphilic sexual offenders and control subjects. METHODS: The study sample (n = 97) consisted of two groups: paraphilic sexual offenders (65 pedophilic child molesters and 32 rapists) and controls (n = 76)...
January 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/27964944/resequencing-three-candidate-genes-discovers-seven-potentially-deleterious-variants-susceptibility-to-major-depressive-disorder-and-suicide-attempts-in-chinese
#17
Shitao Rao, Cherry She Ting Leung, Macro Hb Lam, Yun Kwok Wing, Mary Miu Yee Waye, Stephen Kwok Wing Tsui
BACKGROUND: To date almost 200 genes were found to be associated with major depressive disorder (MDD) or suicide attempts (SA), but very few genes were reported for their molecular mechanisms. This study aimed to find out whether there were common or rare variants in three candidate genes altering the risk for MDD and SA in Chinese. METHODS: Three candidate genes (HOMER1, SLC6A4 and TEF) were chosen for resequencing analysis and association studies as they were reported to be involved in the etiology of MDD and SA...
March 1, 2017: Gene
https://www.readbyqxmd.com/read/27933583/looking-beyond-the-5-httlpr-polymorphism-genetic-and-epigenetic-layers-of-regulation-affecting-the-serotonin-transporter-gene-expression
#18
REVIEW
Sandra Iurescia, Davide Seripa, Monica Rinaldi
Serotonin (5-HT) is a neurotransmitter that regulates fundamental aspects of brain development, physiology and behaviour. The serotonin transporter (5-HTT) is deputized to the reuptake of 5-HT from the intersynaptic space in the presynaptic neurons. 5-HTT governs duration and magnitude of 5-HT biological actions, acting as a master regulator of the fine-tuning of 5-HT signalling. Genetic variation at SLC6A4 gene locus, encoding 5-HTT, contributes to alteration in 5-HT reuptake. The 5-HTTLPR/rs25531/rs25532 polymorphisms located in the promoter region of SLC6A4 gene have been associated with stress-related psychopathology and functional brain phenotypes...
December 8, 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/27889704/pharmacogenetic-studies-a-tool-to-improve-antidepressant-therapy
#19
Marta Ramos, Cecilia Berrogain, Julia Concha, Laura Lomba, Cristina Belén García, Mª Pilar Ribate
The World Health Organization (WHO) predicts that major depressive disorder (MDD) will be the second leading cause of death and disability by 2020. Nowadays, approximately 60-70% of patients with this disorder have shown the lack of effectiveness and tolerability of the therapy with antidepressants. The US Food and Drug Administration (FDA) and the European Medicine Agency (EMA) are including pharmacogenetic information in the labeling of several antidepressants. The presence of this information represents the relevance of genetic polymorphisms in drug response...
December 1, 2016: Drug Metabolism and Personalized Therapy
https://www.readbyqxmd.com/read/27880876/an-integrative-review-of-methylation-at-the-serotonin-transporter-gene-and-its-dialogue-with-environmental-risk-factors-psychopathology-and-5-httlpr
#20
REVIEW
H Palma-Gudiel, L Fañanás
Gene-environment (G×E) interactions have largely been regarded as the root of many complex disorders, including several psychiatric disorders. In this regard, it has been hypothesized that epigenetic mechanisms may be the main mediators of such interactions. Of particular interest is the previously described interaction between psychosocial stress and genetic variability of the serotonin transporter gene (SLC6A4) in its polymorphic region 5-HTTLPR. Here we review the literature concerning SLC6A4 methylation in association with environmental, clinical or genetic variables...
January 2017: Neuroscience and Biobehavioral Reviews
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