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Serotonin transporter

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https://www.readbyqxmd.com/read/29331882/association-analysis-of-slc6a4-and-htr2a-genes-with-obsessive-compulsive-disorder-influence-of-the-stin2-polymorphism
#1
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/29329285/a-direct-interaction-of-cholesterol-with-the-dopamine-transporter-prevents-its-out-to-inward-transition
#2
Talia Zeppelin, Lucy Kate Ladefoged, Steffen Sinning, Xavier Periole, Birgit Schiøtt
Monoamine transporters (MATs) carry out neurotransmitter reuptake from the synaptic cleft, a key step in neurotransmission, which is targeted in the treatment of neurological disorders. Cholesterol (CHOL), a major component of the synaptic plasma membrane, has been shown to exhibit a modulatory effect on MATs. Recent crystal structures of the dopamine transporter (DAT) revealed the presence of two conserved CHOL-like molecules, suggesting a functional protein-CHOL direct interaction. Here, we present extensive atomistic molecular dynamics (MD) simulations of DAT in an outward-facing conformation...
January 12, 2018: PLoS Computational Biology
https://www.readbyqxmd.com/read/29325731/pharmacogenomic-testing-in-child-and-adolescent-psychiatry-an-evidence-based-review
#3
Anna M Wehry, Laura Ramsey, Shane E Dulemba, Sarah A Mossman, Jeffrey R Strawn
Significant advances have been made in the application of pharmacogenomic testing for the treatment of patients with psychiatric disorders. Over the past decade, a number of studies have evaluated the utility of pharmacogenomic testing in pediatric patients with psychiatric disorders. The evidence base for pharmacogenomic testing in youth with depressive and anxiety disorders as well as attention/deficit hyperactivity disorder (ADHD) is reviewed in this article. General pharmacogenomic principles are summarized and functional polymorphisms in P450 enzymes (and associated metabolizer phenotypes), the serotonin transporter promoter polymorphisms, serotonin 2 A receptor genes (e...
January 8, 2018: Current Problems in Pediatric and Adolescent Health Care
https://www.readbyqxmd.com/read/29325499/insights-and-barriers-to-clinical-use-of-serotonin-transporter-pharmacogenetics-in-antidepressant-therapy
#4
James M Stevenson
No abstract text is available yet for this article.
January 12, 2018: Pharmacogenomics
https://www.readbyqxmd.com/read/29325311/-effects-of-trimetazidine-a-myocardial-metabolism-agent-on-regulating-5-hydroxytrytamine-system-of-rats-with-myocardial-infarction-and-or-depression
#5
(no author information available yet)
Objective: 5-Hydroxytrytamine (5-HT) system was reported to be associated with myocardial infarction (MI) and depression. The aim of the present study was to study the effect of trimetazidine on 5-HT in MI and/or depression rats. Methods: Ninety rats were divided into three groups: trimetazidine, sertraline and saline groups (n=30 in each group), and pretreated with trimetazidine, sertarline, or saline, respectively, by gavage once a day for 4 weeks. Thereafter, each group was further divided into three subgroups: MI subgroup, depression subgroup, and MI+ depression subgroup...
January 1, 2018: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/29324833/evidence-for-pmat-and-oct-like-biogenic-amine-transporters-in-a-probiotic-strain-of-lactobacillus-implications-for-interkingdom-communication-within-the-microbiota-gut-brain-axis
#6
Mark Lyte, David R Brown
The ability of prokaryotic microbes to produce and respond to neurochemicals that are more often associated with eukaryotic systems is increasingly recognized through the concept of microbial endocrinology. Most studies have described the phenomena of neurochemical production by bacteria, but there remains an incomplete understanding of the mechanisms by which microbe- or host-derived neuroactive substances can be recognized by bacteria. Based on the evolutionary origins of eukaryotic solute carrier transporters, we hypothesized that bacteria may possess an analogous uptake function for neuroactive biogenic amines...
2018: PloS One
https://www.readbyqxmd.com/read/29310115/serotonin-transporter-gene-slc6a4-polymorphism-may-be-associated-with-chinese-globus-pharyngeus-and-its-antidepressant-effects
#7
Yao Liu, Lin Jia, Shu-Man Jiang, Dong-Yun Chen, Jiang-Shun Song, Jian Xu
BACKGROUND: Although globus pharyngeus is not rare in clinical practice, little is known about its associated gene polymorphism. We investigated the association between the SLC6A4 polymorphism and globus pharyngeus and its response to treatment with antidepressants. METHODS: A total of 84 patients were diagnosed with globus pharyngeus according to Rome III, and 160 healthy controls were genotyped for the SLC6A4 polymorphism using polymerase chain reaction amplification and agarose gel electrophoresis...
January 8, 2018: Digestion
https://www.readbyqxmd.com/read/29309998/drugs-which-influence-serotonin-transporter-and-serotonergic-receptors-pharmacological-and-clinical-properties-in-the-treatment-of-depression
#8
REVIEW
Przemysław Paweł Taciak, Natalia Lysenko, Aleksander Paweł Mazurek
Depression is nowadays a major contributor to global burden of disease. The most commonly prescribed drugs influence monoaminergic pathways, mainly concentrating on serotonin. Unfortunately, there are several drawbacks associated with these drugs, namely late onset of action, risk of suicide and adverse effects: mainly nausea, vomiting and sexual dysfunction. Therefore there is still need for new drugs with possibly high efficacy and fewer side effects. In this paper selected compounds which inhibit serotonin reuptake by acting on the serotonin transporter (SERT) and various serotoninergic receptors are presented...
July 16, 2017: Pharmacological Reports: PR
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
#9
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/29300091/what-contributes-to-snris-dual-targeting-mechanism-the-key-role-of-tm6-domain-in-hsert-and-hnet-revealed-by-molecular-dynamics-simulation
#10
Weiwei Xue, Fengyuan Yang, Panpan Wang, Guoxun Zheng, Yuzong Chen, Xiaojun Yao, Feng Zhu
Dual inhibition of serotonin and norepinephrine transporters (hSERT and hNET) gives greatly improved efficacy and tolerability for treating major depressive disorder (MDD) comparing with selective reuptake inhibitors. Pioneer studies provided valuable information of structure, function, and pharmacology of drugs dual-targeting hSERT and hNET (SNRIs), and the differential binding mechanism between SNRIs and selective inhibitors of 5-HT (SSRIs) / NE (sNRIs) to their corresponding target was expected to be able to facilitate the discovery of privileged drug-like scaffold with improved efficacy...
January 4, 2018: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/29297119/expression-of-components-of-the-serotonergic-system-in-the-developing-rat-thymus
#11
N V Lifantseva, Ts O Koneeva, E E Voronezhskaya, V I Melnikova
The developing thymus of rat fetuses contains all components of the serotonergic system: receptors, enzymes of synthesis, and membrane transporters. The expression of receptors suggests the possibility of a direct influence of serotonin on thymic development. The presence of tryptophan hydroxylase (the key rate-limiting enzyme of serotonin synthesis) and aromatic l-amino acid decarboxylase indicates the ability of fetal thymic cells to synthesize serotonin. It was shown that the cells of a developing thymus can actively uptake extracellular monoamines...
November 2017: Doklady. Biochemistry and Biophysics
https://www.readbyqxmd.com/read/29296268/association-of-serotonin-transporter-gene-polymorphism-with-recurrent-aphthous-stomatitis
#12
Shamsolmolouk Najafi, Mahsa Mohammadzadeh, Amirabbas Zahedi, Mansour Heidari, Nima Rezaei
Background: Recurrent Aphthous Stomatitis (RAS) is one of the most common diseases of the oral cavity all over the world (5-66%). RAS has a multifactorial etiology, while psychological factors such as stress and anger play a role in its manifestation. The serotonergic mechanisms particularly the serotonin-transporter gene (5-HTT) may affect the risk of psychological alterations and stress response. The aim of the present study was to evaluate the polymorphism of the promoter region of 5-HTT (5-HTTLPR) in the patients with RAS, compared to that in the control subjects...
January 2018: Avicenna Journal of Medical Biotechnology
https://www.readbyqxmd.com/read/29289675/dissociation-of-immediate-and-delayed-effects-of-emotional-arousal-on-episodic-memory
#13
Dirk Schümann, Janine Bayer, Deborah Talmi, Tobias Sommer
Emotionally arousing events are usually better remembered than neutral ones. This phenomenon is in humans mostly studied by presenting mixed lists of neutral and emotional items. An emotional enhancement of memory is observed in these studies often already immediately after encoding and increases with longer delays and consolidation. A large body of animal research showed that the more efficient consolidation of emotionally arousing events is based on an activation of the central noradrenergic system and the amygdala (Modulation Hypothesis; Roozendaal & McGaugh, 2011)...
December 28, 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/29288796/dha-mitigates-autistic-behaviors-accompanied-by-dopaminergic-change-in-a-gene-prenatal-stress-mouse-model
#14
Fumihiro Matsui, Patrick Hecht, Kanji Yoshimoto, Yoshihisa Watanabe, Masafumi Morimoto, Kevin Fritsche, Matthew Will, David Beversdorf
Autism Spectrum Disorder (ASD) is characterized by impairments in social interaction, social communication, and repetitive and stereotyped behaviors. Recent work has begun to explore gene x environmental interactions in the etiology of ASD. We previously reported that prenatal stress exposure in stress-susceptible heterozygous serotonin transporter (SERT) KO pregnant dams in a mouse model resulted in autism-like behavior in the offspring (SERT/S mice). The association between prenatal stress and ASD appears to be affected by maternal SERT genotype in clinical populations as well...
December 27, 2017: Neuroscience
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
#15
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/29281252/toward-serotonin-fluorescent-false-neurotransmitters-development-of-fluorescent-dual-serotonin-and-vesicular-monoamine-transporter-substrates-for-visualizing-serotonin-neurons
#16
Adam Henke, Yekaterina Kovalyova, Matthew Dunn, Dominik Dreier, Niko G Gubernator, Iva Dincheva, Christopher Hwu, Peter Sebej, Mark S Ansorge, David Sulzer, Dalibor Sames
Ongoing efforts in our laboratories focus on design of optical reporters known as fluorescent false neurotransmitters (FFNs) that enable the visualization of uptake into, packaging within, and release from individual monoaminergic neurons and presynaptic sites in the brain. Here, we introduce the molecular probe FFN246 as an expansion of the FFN platform to the serotonergic system. Combining the acridone fluorophore with the ethylamine recognition element of serotonin, we identified FFN54 and FFN246 as substrates for both the serotonin transporter and the vesicular monoamine transporter 2 (VMAT2)...
December 27, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/29280387/serotonin-transporter-5-httlpr-genotype-is-associated-with-intrusion-and-avoidance-symptoms-of-dsm-5-posttraumatic-stress-disorder-ptsd-in-chinese-earthquake-survivors
#17
Luobing Liu, Li Wang, Chengqi Cao, Xing Cao, Ye Zhu, Ping Liu, Shu Luo, Jianxin Zhang
BACKGROUND AND OBJECTIVES: Prior studies have found that the serotonin transporter gene-linked polymorphic region (5-HTTLPR) interacts with trauma exposure to increase general risk for Posttraumatic Stress Disorder (PTSD). However, there is little knowledge about the effects of the interaction on distinct symptom clusters of PTSD. This study aimed to investigate the relation between the interaction of 5-HTTLPR and earthquake-related exposures and a contemporary phenotypic model of DSM-5 PTSD symptoms in a traumatised adult sample from China...
December 27, 2017: Anxiety, Stress, and Coping
https://www.readbyqxmd.com/read/29279099/a-review-of-the-literature-on-the-relationships-between-genetic-polymorphisms-and-chemotherapy-induced-nausea-and-vomiting
#18
REVIEW
Komal P Singh, Anand A Dhruva, Elena Flowers, Kord M Kober, Christine Miaskowski
Despite current advances in antiemetic treatments, between 30% to and 60% of oncology patients experience chemotherapy-induced nausea (CIN) and 13% to 33% report chemotherapy-induced vomiting (CIV). Inter-individual differences are observed in the occurrence and severity of chemotherapy-induced nausea and vomiting (CINV). This review summarizes and critiques studies on associations between occurrence and severity of CINV and polymorphisms in serotonin receptor, drug metabolism, and drug transport pathway genes...
January 2018: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/29274752/chronic-paroxetine-treatment-prevents-disruption-of-methamphetamine-sensitive-circadian-oscillator-in-a-transgenic-mouse-model-of-huntington-s-disease
#19
Koliane Ouk, Juliet Aungier, Marc Cuesta, A Jennifer Morton
Circadian abnormalities seen in Huntington's disease (HD) patients are recapitulated in several HD transgenic mouse models. In mice, alongside the master clock located in the suprachiasmatic nucleus (SCN), two other oscillators may influence circadian behaviour. These are the food-entrainable oscillator (FEO) and the methamphetamine-sensitive circadian oscillator (MASCO). SCN- and MASCO- (but not FEO-) driven rhythms are progressively disrupted in the R6/2 mouse model of HD. MASCO-driven rhythms are induced by chronic treatment with low dose of methamphetamine and characterised by an increase in period length to greater than 24 h...
December 21, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/29261228/overview-of-monoamine-transporters
#20
Shaili Aggarwal, Ole V Mortensen
The dopamine (DAT), serotonin (SERT), and norepinephrine (NET) transporters, which are collectively referred to as monoamine transporters (MATs), play significant roles in regulating the neuronal response to these neurotransmitters. MATs terminate the action of these neurotransmitters by translocating them from the synaptic space into the presynaptic neurons. These three transmitters are responsible for controlling a number of physiological, emotional, and behavioral functions, with their transporters being the site of action of drugs employed for the treatment of a variety of conditions, including depression, anxiety, ADHD, schizophrenia, and psychostimulant abuse...
December 20, 2017: Current Protocols in Pharmacology
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