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https://www.readbyqxmd.com/read/28068779/norepinephrine-transporter-gene-variants-and-remission-from-depression-with-venlafaxine-treatment-in-older-adults
#1
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
#2
REVIEW
A J Lisoway, C C Zai, A K Tiwari, J 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
#3
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
#4
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)...
December 15, 2016: 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
#5
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
#6
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
#7
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
#8
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
https://www.readbyqxmd.com/read/27826798/contribution-of-pharmacogenetic-testing-to-modeled-medication-change-recommendations-in-a-long-term-care-population-with-polypharmacy
#9
Elaine A Sugarman, Ali Cullors, Joel Centeno, David Taylor
BACKGROUND: Among long-term care facility residents, polypharmacy is common, and often appropriate, given the need to treat multiple, complex, chronic conditions. Polypharmacy has, however, been associated with increased healthcare costs, adverse drug events, and drug interactions. The current study evaluates the potential medication cost savings of adding personalized pharmacogenetic information to traditional medication management strategies. METHODS: One hundred and twelve long-term care residents completed pharmacogenetic testing for targeted variants in the following genes: CYP1A2, CYP2C9, CYP2C19, CYP2D6, CYP3A4/CYP3A5, HTR2A, HTR2C, SLC6A4, SLC6A2 COMT, OPRM1, SLCO1B1, VKORC1 and MTHFR...
December 2016: Drugs & Aging
https://www.readbyqxmd.com/read/27798133/involvement-of-the-serotonin-transporter-gene-in-accurate-subcortical-speech-encoding
#10
Lenka Selinger, Katarzyna Zarnowiec, Marc Via, Immaculada C Clemente, Carles Escera
: A flourishing line of evidence has highlighted the encoding of speech sounds in the subcortical auditory system as being shaped by acoustic, linguistic, and musical experience and training. And while the heritability of auditory speech as well as nonspeech processing has been suggested, the genetic determinants of subcortical speech processing have not yet been uncovered. Here, we postulated that the serotonin transporter-linked polymorphic region (5-HTTLPR), a common functional polymorphism located in the promoter region of the serotonin transporter gene (SLC6A4), is implicated in speech encoding in the human subcortical auditory pathway...
October 19, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27763986/prenatal-major-depressive-disorder-placenta-glucocorticoid-and-serotonergic-signaling-and-infant-cortisol-response
#11
Laura R Stroud, George D Papandonatos, Stephanie H Parade, Amy L Salisbury, Maureen G Phipps, Barry M Lester, James F Padbury, Carmen J Marsit
OBJECTIVES: Extending prior studies of prenatal adversity and depressive symptoms, we tested associations between maternal prenatal major depressive disorder (MDD) and infant cortisol regulation. Based on prior findings by our group, we also tested placenta glucocorticoid (HSD11B2 methylation) and serotonin (SLC6A4 gene expression) signaling as moderators of links between prenatal MDD and infant cortisol. METHODS: Participants were 153 mother-infant pairs from a low-income, diverse sample (M [SD] age = 26[6] years)...
October 19, 2016: Psychosomatic Medicine
https://www.readbyqxmd.com/read/27743374/associations-between-genetic-risk-functional-brain-network-organization-and-neuroticism
#12
Michelle N Servaas, Linda Geerligs, Jojanneke A Bastiaansen, Remco J Renken, Jan-Bernard C Marsman, Ilja M Nolte, Johan Ormel, André Aleman, Harriëtte Riese
Neuroticism and genetic variation in the serotonin-transporter (SLC6A4) and catechol-O-methyltransferase (COMT) gene are risk factors for psychopathology. Alterations in the functional integration and segregation of neural circuits have recently been found in individuals scoring higher on neuroticism. The aim of the current study was to investigate how genetic risk factors impact functional network organization and whether genetic risk factors moderate the association between neuroticism and functional network organization...
October 14, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27729204/exploring-the-multifactorial-nature-of-postoperative-nausea-and-vomiting-in-women-following-surgery-for-breast-cancer
#13
REVIEW
Susan W Wesmiller, Susan M Sereika, Catherine M Bender, Dana Bovbjerg, Gretchen Ahrendt, Marguerite Bonaventura, Yvette P Conley
BACKGROUND: Postoperative nausea and vomiting (PONV) are two of the most frequent and distressing complications following surgical procedures, with as many as 80% of patients considered to be at risk. Despite recognition of well-established risk factors and the subsequent use of clinical guidelines, 20-30% of women do not respond to antiemetic protocols, indicating that there may be a genetic risk. OBJECTIVE: The purpose of this pilot study was to describe the incidence and explore the risk factors associated with PONV after surgery in women diagnosed with early stage breast cancer...
January 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/27721799/genetic-association-studies-of-suicidal-behavior-a-review-of-the-past-10%C3%A2-years-progress-limitations-and-future-directions
#14
Bojan Mirkovic, Claudine Laurent, Marc-Antoine Podlipski, Thierry Frebourg, David Cohen, Priscille Gerardin
Suicidal behaviors (SBs), which range from suicidal ideation to suicide attempts and completed suicide, represent a fatal dimension of mental ill-health. The involvement of genetic risk factors in SB is supported by family, twin, and adoption studies. The aim of this paper is to review recent genetic association studies in SBs including (i) case-control studies, (ii) family-based association studies, and (iii) genome-wide association studies (GWAS). Various studies on genetic associations have tended to suggest that a number of genes [e...
2016: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/27720787/associations-between-neurotransmitter-genes-and-fatigue-and-energy-levels-in-women-after-breast-cancer-surgery
#15
Jasmine Eshragh, Anand Dhruva, Steven M Paul, Bruce A Cooper, Judy Mastick, Deborah Hamolsky, Jon D Levine, Christine Miaskowski, Kord M Kober
CONTEXT: Fatigue is a common problem in oncology patients. Less is known about decrements in energy levels and the mechanisms that underlie both fatigue and energy. OBJECTIVES: In patients with breast cancer, variations in neurotransmitter genes between lower and higher fatigue latent classes and between the higher and lower energy latent classes were evaluated. METHODS: Patients completed assessments before and monthly for six months after surgery...
January 2017: Journal of Pain and Symptom Management
https://www.readbyqxmd.com/read/27708560/targeted-re-sequencing-approach-of-candidate-genes-implicates-rare-potentially-functional-variants-in-tourette-syndrome-etiology
#16
John Alexander, Hera Potamianou, Jinchuan Xing, Li Deng, Iordanis Karagiannidis, Fotis Tsetsos, Petros Drineas, Zsanett Tarnok, Renata Rizzo, Tomasz Wolanczyk, Luca Farkas, Peter Nagy, Urszula Szymanska, Christos Androutsos, Vaia Tsironi, Anastasia Koumoula, Csaba Barta, Paul Sandor, Cathy L Barr, Jay Tischfield, Peristera Paschou, Gary A Heiman, Marianthi Georgitsi
Although the genetic basis of Tourette Syndrome (TS) remains unclear, several candidate genes have been implicated. Using a set of 382 TS individuals of European ancestry we investigated four candidate genes for TS (HDC, SLITRK1, BTBD9, and SLC6A4) in an effort to identify possibly causal variants using a targeted re-sequencing approach by next generation sequencing technology. Identification of possible disease causing variants under different modes of inheritance was performed using the algorithms implemented in VAAST...
2016: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/27611726/genetic-polymorphisms-in-the-serotonergic-system-are-associated-with-circadian-manifestations-of-bruxism
#17
G H Oporto, T Bornhardt, V Iturriaga, L A Salazar
Bruxism (BRX) is a condition of great interest for researchers and clinicians in dental and medical areas. BRX has two circadian manifestations; it can occur during sleep (sleep bruxism, SB) or during wakefulness (awake bruxism, WB). However, it can be suffered together. Recent investigations suggest that central nervous system neurotransmitters and their genes could be involved in the genesis of BRX. Serotonin is responsible for the circadian rhythm, maintaining arousal, regulating stress response, muscle tone and breathing...
November 2016: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/27606312/clinical-utility-of-combinatorial-pharmacogenomics-guided-antidepressant-therapy-evidence-from-three-clinical-studies
#18
C Anthony Altar, Joseph Carhart, Josiah D Allen, Daniel Hall-Flavin, Joel Winner, Bryan Dechairo
DNA of 258 patients with treatment-resistant depression was collected in three 8-10 week, two-arm, prospective clinical trials. Forty-four allelic variations were measured in genes for the cytochrome P450 (CYP) enzymes CYP2D6, CYPC19, and CYP1A2, the serotonin transporter (SLC6A4), and the 5-HT2A receptor (HTR2A). The combinatorial pharmacogenomic (CPGx™) GeneSight test results were provided to clinicians to support medication changes from baseline (guided arm), or they were provided at the end of each study to clinicians of unguided patients who were treated as usual (TAU)...
October 2015: Molecular Neuropsychiatry
https://www.readbyqxmd.com/read/27603714/consensus-paper-of-the-wfsbp-task-force-on-genetics-genetics-epigenetics-and-gene-expression-markers-of-major-depressive-disorder-and-antidepressant-response
#19
Chiara Fabbri, Ladislav Hosak, Rainald Mössner, Ina Giegling, Laura Mandelli, Frank Bellivier, Stephan Claes, David A Collier, Alejo Corrales, Lynn E Delisi, Carla Gallo, Michael Gill, James L Kennedy, Marion Leboyer, Amanda Lisoway, Wolfgang Maier, Miguel Marquez, Isabelle Massat, Ole Mors, Pierandrea Muglia, Markus M Nöthen, Michael C O'Donovan, Jorge Ospina-Duque, Peter Propping, Yongyong Shi, David St Clair, Florence Thibaut, Sven Cichon, Julien Mendlewicz, Dan Rujescu, Alessandro Serretti
Major depressive disorder (MDD) is a heritable disease with a heavy personal and socio-economic burden. Antidepressants of different classes are prescribed to treat MDD, but reliable and reproducible markers of efficacy are not available for clinical use. Further complicating treatment, the diagnosis of MDD is not guided by objective criteria, resulting in the risk of under- or overtreatment. A number of markers of MDD and antidepressant response have been investigated at the genetic, epigenetic, gene expression and protein levels...
September 7, 2016: World Journal of Biological Psychiatry
https://www.readbyqxmd.com/read/27566064/behavioral-and-molecular-effects-of-prenatal-continuous-light-exposure-in-the-adult-rat
#20
Suzana Elena Voiculescu, Diana Le Duc, Adrian Eugen Roșca, Vlad Zeca, Diana Maria Chiţimuș, Andreea Letiţia Arsene, Cristina Manuela Drăgoi, Alina Crenguţa Nicolae, Leon Zăgrean, Torsten Schöneberg, Ana-Maria Zăgrean
Disruption of the maternal environment during pregnancy leads to behavioral changes and diseases in the adult offspring. To explore the influence of prenatal continuous light exposure (PCLE) on the adult offspring, we exposed pregnant Wistar rats to constant light during late gestation. Adult PCLE offspring showed an anxiety-like behavior and impairment of short-term memory in different tests. Measurements in the whole brain homogenates from newborn and adult offspring indicated decreased melatonin and serotonin levels and increased reactive oxygen species level in PCLE offspring...
November 1, 2016: Brain Research
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