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https://www.readbyqxmd.com/read/29358097/the-effect-of-5-httlpr-and-a-serotonergic-multi-marker-score-on-amygdala-prefrontal-and-anterior-cingulate-cortex-reactivity-and-habituation-in-a-large-healthy-fmri-cohort
#1
J H Piel, T A Lett, C Wackerhagen, M M Plichta, S Mohnke, O Grimm, N Romanczuk-Seiferth, F Degenhardt, H Tost, S Witt, M Nöthen, M Rietschel, A Heinz, A Meyer-Lindenberg, H Walter, S Erk
Major depressive disorder (MDD) is characterized by low mood for at least two weeks. Impaired emotion regulation has been suggested to be the consequence of dysfunctional serotonergic regulation of limbic and prefrontal regions, especially the amygdala, the anterior cingulate cortex (ACC) and the prefrontal cortex (PFC). The impact of genetic variation on brain function can be investigated with intermediate phenotypes. A suggested intermediate phenotype of MDD is emotion recognition: The 5-HTTLPR polymorphism of SLC6A4 as well as other serotonergic genes have been associated with amygdala and prefrontal function during emotion recognition...
January 18, 2018: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29333880/pharmacogenetic-analysis-of-opioid-dependence-treatment-dose-and-dropout-rate
#2
Richard C Crist, James Li, Glenn A Doyle, Alex Gilbert, Bryan M Dechairo, Wade H Berrettini
BACKGROUND: Currently, no pharmacogenetic tests for selecting an opioid-dependence pharmacotherapy have been approved by the US Food and Drug Administration. OBJECTIVES: Determine the effects of variants in 11 genes on dropout rate and dose in patients receiving methadone or buprenorphine/naloxone (ClinicalTrials.gov Identifier: NCT00315341). METHODS: Variants in six pharmacokinetic genes (CYP1A2, CYP2B6, CYP2C19, CYP2C9, CYP2D6, CYP3A4) and five pharmacodynamic genes (HTR2A, OPRM1, ADRA2A, COMT, SLC6A4) were genotyped in samples from a 24-week, randomized, open-label trial of methadone and buprenorphine/naloxone for the treatment of opioid dependence (n = 764; 68...
January 15, 2018: American Journal of Drug and Alcohol Abuse
https://www.readbyqxmd.com/read/29331882/association-analysis-of-slc6a4-and-htr2a-genes-with-obsessive-compulsive-disorder-influence-of-the-stin2-polymorphism
#3
Chayenne Karine Ferreira Gomes, Tamiris Vieira-Fonseca, Fernanda Brito Melo-Felippe, Juliana Braga de Salles Andrade, Leonardo F Fontenelle, Fabiana Barzotti Kohlrausch
BACKGROUND: Obsessive-Compulsive Disorder (OCD) is a complex and chronic disorder characterized by recurrent thoughts and/or repetitive behaviors. Given the potent anti-obsessional effects of the so-called serotonin reuptake inhibitors, genes related to serotonergic system may be well implicated in the etiopathogenesis of OCD. The gene encoding the serotonin transporter (SLC6A4), which shows a variable number of tandem repeat (VNTR) polymorphism in intron 2 (STin2), have been previously associated with OCD...
December 16, 2017: Comprehensive Psychiatry
https://www.readbyqxmd.com/read/29331709/what-do-the-genetic-association-data-say-about-the-high-risk-of-suicide-in-people-with-depression-a-novel-network-based-approach-to-find-common-molecular-basis-for-depression-and-suicidal-behavior-and-related-therapeutic-targets
#4
Ali Bozorgmehr, Fatemeh Alizadeh, Sattar Norouzi Ofogh, Mohammad Reza Abdollahzadeh Hamzekalayi, Sara Herati, Atefeh Moradkhani, Ali Shahbazi, Mohammad Ghadirivasfi
BACKGROUND: Available sources indicate that the risk of suicide in people with major depression is higher than other psychiatric disorders. Although it seems that these two conditions may have a shared cause in some cases, no studies have been conducted to identify a common basis for them. METHODS: In this study, following an extensive review of literature, we found almost all the genes that are involved in major depression and suicidal behavior, and we isolated genes shared between the two conditions...
January 8, 2018: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29325450/symptom-science-omics-supports-common-biological-underpinnings-across-symptoms
#5
Maura K McCall, Ansley Grimes Stanfill, Elizabeth Skrovanek, Jessica Renee Pforr, Susan W Wesmiller, Yvette P Conley
For precision health care to be successful, an in-depth understanding of the biological mechanisms for symptom development and severity is essential. Omics-based research approaches facilitate identification of the biological underpinnings of symptoms. We reviewed literature for omics-based approaches and exemplar symptoms (sleep disruption, cognitive impairment, fatigue, gastrointestinal [GI] distress, and pain) to identify genes associated with the symptom or symptoms across disease processes. The review yielded 27 genes associated with more than one symptom...
January 1, 2018: Biological Research for Nursing
https://www.readbyqxmd.com/read/29325449/analysis-of-dna-methylation-in-young-people-limited-evidence-for-an-association-between-victimization-stress-and-epigenetic-variation-in-blood
#6
Sarah J Marzi, Karen Sugden, Louise Arseneault, Daniel W Belsky, Joe Burrage, David L Corcoran, Andrea Danese, Helen L Fisher, Eilis Hannon, Terrie E Moffitt, Candice L Odgers, Carmine Pariante, Richie Poulton, Benjamin S Williams, Chloe C Y Wong, Jonathan Mill, Avshalom Caspi
OBJECTIVE: DNA methylation has been proposed as an epigenetic mechanism by which early-life experiences become "embedded" in the genome and alter transcriptional processes to compromise health. The authors sought to investigate whether early-life victimization stress is associated with genome-wide DNA methylation. METHOD: The authors tested the hypothesis that victimization is associated with DNA methylation in the Environmental Risk (E-Risk) Longitudinal Study, a nationally representative 1994-1995 birth cohort of 2,232 twins born in England and Wales and assessed at ages 5, 7, 10, 12, and 18 years...
January 12, 2018: American Journal of Psychiatry
https://www.readbyqxmd.com/read/29313869/negative-social-acts-and-pain-evidence-of-a-workplace-bullying-and-5-htt-genotype-interaction
#7
Daniel Pitz Jacobsen, Morten Birkeland Nielsen, Ståle Einarsen, Johannes Gjerstad
Objectives Long-term exposure to systematic negative acts at work, usually labeled workplace bullying, is a prevalent problem at many workplaces. The adverse effects of such exposure may range from psychological symptoms, such as depression and anxiety to somatic ailments like cardiovascular disease and musculoskeletal complaints. In this study, we examined the relationships among exposure to negative acts, genetic variability in the 5-HTT gene SLC6A4 and pain. Methods The study was based on a nationally representative survey of 987 Norwegian employees drawn from the Norwegian Central Employee Register by Statistics Norway...
January 9, 2018: Scandinavian Journal of Work, Environment & Health
https://www.readbyqxmd.com/read/29304146/from-early-stress-to-12-month-development-in-very-preterm-infants-preliminary-findings-on-epigenetic-mechanisms-and-brain-growth
#8
Monica Fumagalli, Livio Provenzi, Pietro De Carli, Francesca Dessimone, Ida Sirgiovanni, Roberto Giorda, Claudia Cinnante, Letizia Squarcina, Uberto Pozzoli, Fabio Triulzi, Paolo Brambilla, Renato Borgatti, Fabio Mosca, Rosario Montirosso
Very preterm (VPT) infants admitted to Neonatal Intensive Care Unit (NICU) are at risk for altered brain growth and less-than-optimal socio-emotional development. Recent research suggests that early NICU-related stress contributes to socio-emotional impairments in VPT infants at 3 months through epigenetic regulation (i.e., DNA methylation) of the serotonin transporter gene (SLC6A4). In the present longitudinal study we assessed: (a) the effects of NICU-related stress and SLC6A4 methylation variations from birth to discharge on brain development at term equivalent age (TEA); (b) the association between brain volume at TEA and socio-emotional development (i...
2018: PloS One
https://www.readbyqxmd.com/read/29287766/serotonin-transporter-gene-expression-predicts-the-worsening-of-suicidal-ideation-and-suicide-attempts-along-a-long-term-follow-up-of-a-major-depressive-episode
#9
Julia-Lou Consoloni, El Chérif Ibrahim, Marie-Noëlle Lefebvre, Xavier Zendjidjian, Emilie Olié, Pascale Mazzola-Pomietto, Thomas Desmidt, Ludovic Samalin, Pierre-Michel Llorca, Mocrane Abbar, Jorge Lopez-Castroman, Emmanuel Haffen, Karine Baumstarck, Jean Naudin, Jean-Michel Azorin, Wissam El-Hage, Philippe Courtet, Raoul Belzeaux
The quest for biomarkers in suicidal behaviors has been elusive so far, despite their potential utility in clinical practice. One of the most robust biological findings in suicidal behaviors is the alteration of the serotonin transporter function in suicidal individuals. Our main objective was to investigate the predictive value of the serotonin transporter gene expression (SLC6A4) for suicidal ideation and as secondary, for suicide attempts in individuals with a major depressive episode (MDE). A 30-week prospective study was conducted on 148 patients with a MDE and 100 healthy controls including 4 evaluation times (0, 2, 8 and 30 weeks)...
December 26, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29286513/influence-of-polymorphic-variants-of-the-slc6a4-gene-on-the-frequency-of-detection-of-depressive-states-in-the-group-of-the-clean-up-workers-of-consequences-of-chornobyl-accident-in-the-remote-period-after-the-chornobyl-catastrophe
#10
I V Abramenko, N I Bilous, S A Chumak, K M Loganovsky
Mental disorders of the victims are one of the important medical consequences of the Chornobyl accident. It is also known that in the implementation of the pathogenesis of depressive states a significant role belongs to the sero tonin transporter gene (SLC6A4). OBJECTIVE: To determine the effect of polymorphic variants of the SLC6A4 gene on the frequency of detection of depression in a group of clean up workers in the remote period after the Chornobyl catastrophe. METHODS: The study was conducted in a group of 59 victims of the Chornobyl NPP accident, divided into two groups (without depression and with depressive symptoms)...
December 2017: Problemy Radiat︠s︡iĭnoï Medyt︠s︡yny Ta Radiobiolohiï
https://www.readbyqxmd.com/read/29237550/the-effects-of-dna-methylation-on-human-psychology
#11
REVIEW
Farzeen Kader, Meenu Ghai, Leah Maharaj
DNA methylation is a fundamental epigenetic modification in the human genome; pivotal in development, genomic imprinting, X inactivation, chromosome stability, gene expression and methylation aberrations are involved in an array of human diseases. Methylation at promoters is associated with transcriptional repression, whereas gene body methylation is generally associated with gene expression. Extrinsic factors such as age, diets and lifestyle affect DNA methylation which consequently alters gene expression...
December 10, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/29220746/testing-bidirectional-relationships-between-alcohol-use-and-depressive-symptoms-what-is-the-role-of-the-serotonin-transporter-gene
#12
Roy Otten, Carmen S van der Zwaluw, Rutger C Engels
Alcohol abuse often co-exists with a major depressive disorder. In order to understand the development of this comorbidity, it is important to concentrate on the preceding process. It has been suggested that the link between alcohol use and depressive symptoms is a result of an interaction with genetic factors. The aim of this study was to longitudinally examine the effect of the 5-HTTLPR genotype on the association between depressive symptoms and alcohol use in a Dutch community sample. Following a stepwise approach, bivariate correlations, longitudinal regression analyses, and latent growth curve analyses were separately conducted for 316 males and 321 females...
August 13, 2017: Alcohol
https://www.readbyqxmd.com/read/29196338/proteomics-and-metabolomics-identify-molecular-mechanisms-of-aging-potentially-predisposing-for-chronic-lymphocytic-leukemia
#13
Rupert Laurenz Mayer, Josef D Schwarzmeier, Marlene C Gerner, Andrea Bileck, Johanna C Mader, Samuel M Meier-Menches, Samuel M Gerner, Klaus G Schmetterer, Tobias Pukrop, Albrecht Reichle, Astrid Slany, Christopher Gerner
B cell chronic lymphocytic leukemia (B-CLL), the most common type of leukemia in adults, is still essentially incurable despite the development of novel therapeutic strategies. This reflects the incomplete understanding of the pathophysiology of this disease. A comprehensive proteome analysis of primary human B-CLL cells and B cells from younger as well as elderly healthy donors was performed. For comparison, also the chronic B cell leukemia cell line JVM-13 was included. A principal component analysis comprising 6945 proteins separated these four groups, placing B cells of aged-matched controls between those of young donors and B-CLL patients, while identifying JVM-13 as poorly related cells...
December 1, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/29191570/the-effect-of-interactions-between-genetics-and-cannabis-use-on-neurocognition-a-review
#14
REVIEW
E Cosker, T Schwitzer, N Ramoz, F Ligier, L Lalanne, P Gorwood, R Schwan, V Laprévote
BACKGROUND: Cannabis is one of the most widely-used drugs in industrialized countries. It is now well established that cannabis use impacts neurocognition. In the intoxication period time episodic memory, working memory and attention are impacted and impulsivity is increased. The long-term effects of cannabis use tend to be similar. Various internal factors, such as sex differences, modulate this impact. It is unclear whether genetic variations can also influence the impact of cannabis on neurocognition...
November 28, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/29172598/biological-underpinnings-of-an-internalizing-pathway-to-alcohol-cigarette-and-marijuana-use
#15
Elisa M Trucco, Sandra Villafuerte, Andrea Hussong, Margit Burmeister, Robert A Zucker
There is a limited understanding as to how specific genes impact addiction risk. Applying a developmental framework and research domain criteria (RDoC) to identify etiological pathways from genetic markers to addiction may have utility. Prior research has largely focused on externalizing pathways to substance use. Although internalizing mechanisms have received less attention, there is strong support that addiction is a longer term consequence of using substances to cope with internalizing as well as externalizing problems...
November 27, 2017: Journal of Abnormal Psychology
https://www.readbyqxmd.com/read/29162172/cumulative-prenatal-exposure-to-adversity-reveals-associations-with-a-broad-range-of-neurodevelopmental-outcomes-that-are-moderated-by-a-novel-biologically-informed-polygenetic-score-based-on-the-serotonin-transporter-solute-carrier-family-c6-member-4-slc6a4
#16
Patrícia P Silveira, Irina Pokhvisneva, Carine Parent, Shirong Cai, Anu Sathyan Sathyapalan Rema, Birit F P Broekman, Anne Rifkin-Graboi, Michael Pluess, Kieran J O'Donnell, Michael J Meaney
While many studies focus on the association between early life adversity and the later risk for psychopathology, few simultaneously explore diverse forms of environmental adversity. Moreover, those studies that examined the cumulative impact of early life adversity focus uniquely on postnatal influences. The objective of this study was to focus on the fetal period of development to construct and validate a cumulative prenatal adversity score in relation to a wide range of neurodevelopmental outcomes. We also examined the interaction of this adversity score with a biologically informed genetic score based on the serotonin transporter gene...
December 2017: Development and Psychopathology
https://www.readbyqxmd.com/read/29155230/the-association-of-monoamine-related-gene-polymorphisms-with-behavioural-correlates-of-response-inhibition-a-meta-analytic-review
#17
REVIEW
Irene Rincón-Pérez, Alberto J Sánchez-Carmona, Jacobo Albert, José A Hinojosa
Response inhibition has been shown to be associated with monoamine-related gene polymorphisms, although evidence is inconclusive. To comprehensively examine these genotype effects on behavioural correlates of response inhibition in non-clinical adult populations, we performed a two-step approach. A systematic review of studies using Go/No-Go and/or Stop-Signal paradigms was first carried out. Thirty-eight eligible research articles were identified, which examined over 15 candidate genes. Remarkably, no firm conclusions could be drawn from these studies...
November 16, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/29136336/effect-of-polymorphisms-on-the-pharmacokinetics-pharmacodynamics-and-safety-of-sertraline-in-healthy-volunteers
#18
Miriam Saiz-Rodríguez, Carmen Belmonte, Manuel Román, Dolores Ochoa, Dora Koller, María Talegón, María C Ovejero-Benito, Rosario López-Rodríguez, Teresa Cabaleiro, Francisco Abad-Santos
Sertraline is a selective serotonin reuptake inhibitor (SSRI) widely metabolized in the liver by cytochrome P450 (CYP) enzymes. Besides, it is a P-glycoprotein substrate. Moreover, serotonin transporters and serotonin receptors are involved in its efficacy and safety. The aim of the present study was to evaluate the role of polymorphisms of metabolizing enzymes, transporters and receptors on the pharmacokinetics, pharmacodynamics and tolerability of sertraline in healthy volunteers. Forty-six healthy volunteers (24 men and 22 women) receiving a 100-mg single oral dose of sertraline were genotyped for 17 genetic variants of CYP enzymes (CYP2B6, CYP2C9, CYP2C19, CYP2D6), ATP binding cassette subfamily B member 1 (ABCB1), Solute carrier family 6 member 4 (SLC6A4), 5-Hydroxytryptamine receptor 2A (HTR2A) and 5-Hydroxytryptamine receptor 2C (HTR2C) genes...
November 14, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/29114103/association-of-serotonin-transporter-gene-alujb-methylation-with-major-depression-amygdala-responsiveness-5-httlpr-rs25531-polymorphism-and-stress
#19
Ilona Schneider, Harald Kugel, Ronny Redlich, Dominik Grotegerd, Christian Bürger, Paul-Christian Bürkner, Nils Opel, Katharina Dohm, Dario Zaremba, Susanne Meinert, Nina Schröder, Anna Milena Straßburg, Kathrin Schwarte, Christiane Schettler, Oliver Ambrée, Stephan Rust, Katharina Domschke, Volker Arolt, Walter Heindel, Bernhard T Baune, Weiqi Zhang, Udo Dannlowski, Christa Hohoff
DNA methylation profiles of the serotonin transporter gene (SLC6A4) have been shown to alter SLC6A4 expression, drive antidepressant treatment response and modify brain functions. This study investigated whether methylation of an AluJb element in the SLC6A4 promotor was associated with major depressive disorder (MDD), amygdala reactivity to emotional faces, 5-HTTLPR/rs25531 polymorphism, and recent stress. MDD patients (n=122) and healthy controls (HC, n=176) underwent fMRI during an emotional face-matching task...
November 7, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29102815/combining-genetic-and-epigenetic-parameters-of-the-serotonin-transporter-gene-in-obsessive-compulsive-disorder
#20
Edna Grünblatt, Zoya Marinova, Alexander Roth, Elena Gardini, Juliane Ball, Julia Geissler, Tomasz K Wojdacz, Marcel Romanos, Susanne Walitza
While genetic variants have been reported to be associated with obsessive-compulsive disorder (OCD), the small effect sizes suggest that epigenetic mechanisms such as DNA methylation may also be relevant. The serotonin transporter (SLC6A4) gene has been extensively investigated in relation to OCD, since serotonin reuptake inhibitors are the pharmacological treatment of choice for the disorder. The current study set three questions: Firstly, whether the high expressing loci of the SLC6A4 polymorphisms, 5-HTTLPR + rs25531, rs25532 and rs16965628 are associated with family-based (n = 164 trios) and case-control OCD (n = 186, 152, respectively)...
October 16, 2017: Journal of Psychiatric Research
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