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Serotonin transporter

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https://www.readbyqxmd.com/read/28213183/a-role-for-the-serotonin-reuptake-transporter-in-the-brain-and-intestinal-features-of-autism-spectrum-disorders-and-developmental-antidepressant-exposure
#1
REVIEW
Kara Gross Margolis
Many disease conditions considered CNS-predominant harbor significant intestinal comorbidities. Serotonin (5-HT) and the serotonin reuptake transporter (SERT) have increasingly been shown to play important roles in both brain and intestinal development and long-term function. 5-HT and SERT may thus modulate critical functions in the development and perpetuation of brain-gut axis disease. We discuss the potential roles of 5-HT and SERT in the brain and intestinal manifestations of autism spectrum disorders and developmental antidepressant exposure...
February 14, 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/28209599/role-of-shp2-protein-tyrosine-phosphatase-in-sert-inhibition-by-enteropathogenic-e-coli-epec
#2
Megha Singhal, Christopher Manzella, Vinay Soni, Waddah A Alrefai, Seema Saksena, Gail A Hecht, Pradeep K Dudeja, Ravinder K Gill
Enteropathogenic E. coli (EPEC), one of the diarrheagenic E. coli pathotypes, is among the most important food-borne pathogens infecting children worldwide. Inhibition of serotonin transporter (SERT), that regulates extracellular availability of serotonin (5-HT), has been previously implicated in EPEC-associated diarrhea. EPEC was shown to inhibit SERT via activation of protein tyrosine phosphatases (PTPase), albeit the specific PTPase involved is not known. Current studies aimed to identify EPEC activated PTPase and its role in SERT inhibition...
February 16, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28203264/a-pilot-study-exploring-the-association-of-morphological-changes-with-5-httlpr-polymorphism-in-ocd-patients
#3
Shinichi Honda, Tomohiro Nakao, Hiroshi Mitsuyasu, Kayo Okada, Leo Gotoh, Mayumi Tomita, Hirokuni Sanematsu, Keitaro Murayama, Keisuke Ikari, Masumi Kuwano, Takashi Yoshiura, Hiroaki Kawasaki, Shigenobu Kanba
BACKGROUND: Clinical and pharmacological studies of obsessive-compulsive disorder (OCD) have suggested that the serotonergic systems are involved in the pathogenesis, while structural imaging studies have found some neuroanatomical abnormalities in OCD patients. In the etiopathogenesis of OCD, few studies have performed concurrent assessment of genetic and neuroanatomical variables. METHODS: We carried out a two-way ANOVA between a variable number of tandem repeat polymorphisms (5-HTTLPR) in the serotonin transporter gene and gray matter (GM) volumes in 40 OCD patients and 40 healthy controls (HCs)...
2017: Annals of General Psychiatry
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
#4
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
https://www.readbyqxmd.com/read/28195567/bdnf-val66met-association-with-serotonin-transporter-binding-in-healthy-humans
#5
P M Fisher, B Ozenne, C Svarer, D Adamsen, S Lehel, W F C Baaré, P S Jensen, G M Knudsen
The serotonin transporter (5-HTT) is a key feature of the serotonin system, which is involved in behavior, cognition and personality and implicated in neuropsychiatric illnesses including depression. The brain-derived neurotrophic factor (BDNF) val66met and 5-HTTLPR polymorphisms have predicted differences in 5-HTT levels in humans but with equivocal results, possibly due to limited sample sizes. Within the current study we evaluated these genetic predictors of 5-HTT binding with [(11)C]DASB positron emission tomography (PET) in a comparatively large cohort of 144 healthy individuals...
February 14, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28194630/source-based-morphometry-multivariate-approach-to-analyze-123-i-fp-cit-spect-imaging
#6
Enrico Premi, V D Calhoun, V Garibotto, R Turrone, A Alberici, E Cottini, A Pilotto, S Gazzina, M Magoni, B Paghera, B Borroni, A Padovani
PURPOSE: [(123)I]FP-CIT (DaTSCAN®) single-photon emission computed tomography (SPECT) imaging is widely used to study neurodegenerative parkinsonism, by measuring presynaptic dopamine transporter (DAT) in striatal regions. Beyond DAT, [(123)I]FP-CIT may be considered for other monoaminergic systems, in particular the serotonin transporter (SERT). Independent component analysis (ICA) implemented in source-based morphometry (SBM) could represent an alternative method to explore monoaminergic pathways, studying the relationship among voxels and grouping them into "neurotransmission" networks...
February 13, 2017: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
https://www.readbyqxmd.com/read/28194570/genetic-and-biochemical-changes-of-the-serotonergic-system-in-migraine-pathobiology
#7
REVIEW
Claudia Francesca Gasparini, Robert Anthony Smith, Lyn Robyn Griffiths
Migraine is a brain disorder characterized by a piercing headache which affects one side of the head, located mainly at the temples and in the area around the eye. Migraine imparts substantial suffering to the family in addition to the sufferer, particularly as it affects three times more women than men and is most prevalent between the ages of 25 and 45, the years of child rearing. Migraine typically occurs in individuals with a genetic predisposition and is aggravated by specific environmental triggers. Attempts to study the biochemistry of migraine began as early as the 1960s and were primarily directed at serotonin metabolism after an increase of 5-hydroxyindoleacetic acid (5-HIAA), the main metabolite of serotonin was observed in urine of migraineurs...
December 2017: Journal of Headache and Pain
https://www.readbyqxmd.com/read/28192456/the-flavanone-homoeriodictyol-increases-sglt-1-mediated-glucose-uptake-but-decreases-serotonin-release-in-differentiated-caco-2-cells
#8
Barbara Lieder, Julia Katharina Hoi, Ann-Katrin Holik, Katrin Geissler, Joachim Hans, Barbara Friedl, Kathrin Liszt, Gerhard E Krammer, Jakob P Ley, Veronika Somoza
Flavanoids and related polyphenols, among them hesperitin, have been shown to modulate cellular glucose transport by targeting SGLT-1 and GLUT-2 transport proteins. We aimed to investigate whether homoeriodictyol, which is structurally related to hesperitin, affects glucose uptake in differentiated Caco-2 cells as a model for the intestinal barrier. The results revealed that, in contrast to other polyphenols, the flavanon homoeriodictyol promotes glucose uptake by 29.0 ± 3.83% at a concentration of 100 μM...
2017: PloS One
https://www.readbyqxmd.com/read/28192169/the-serotonin-transporter-polymorphism-5-httlpr-and-coping-strategies-influence-successful-emotion-regulation-in-an-acute-stress-situation-physiological-evidence
#9
Thomas Plieger, Martin Melchers, Annabel Vetterlein, Janina Görtz, Sarah Kuhn, Melissa Ruppel, Martin Reuter
INTRODUCTION: Emotion regulation is an important everyday-life skill to reduce harm and stress. Consequently, research shows associations between psychopathologies and emotional dysregulation. The serotonin transporter polymorphism (5-HTTLPR) has repeatedly been associated to phenotypes and syndromes related to emotional dysregulation. However, there is no study showing any direct effects of 5-HTTLPR genotype and emotion regulation. Hence, the aim of the present study was to draw a link between 5-HTTLPR to emotion regulation...
February 9, 2017: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/28192111/effects-of-progesterone-administered-after-mptp-on-dopaminergic-neurons-of-male-mice
#10
Nadhir Litim, Marc Morissette, Thérèse Di Paolo
Progesterone neuroprotection of striatal dopamine (DA) in male mice lesioned with 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) was previously reported when administered before MPTP or an hour after. A dose of MPTP to induce a partial lesion was used to model early stages or prodromal Parkinson. We hypothesized that brain DA can be restored by progesterone administered early (24 h) or later (5 days) after MPTP. Male mice received 4 injections of MPTP (8 mg/kg) and progesterone (8 mg/kg) once daily for 5 days started 24 h or 5 days after MPTP...
February 9, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28185878/chronic-mild-stress-augments-mptp-induced-neurotoxicity-in-a-murine-model-of-parkinson-s-disease
#11
Udaiyappan Janakiraman, Thamilarasan Manivasagam, Arokiasamy Justin Thenmozhi, Chinnasamy Dhanalakshmi, Musthafa Mohamed Essa, Byoung-Joon Song, Gilles J Guillemin
Depression is frequently encountered during Parkinson's disease (PD) as a non-motor feature, which has been reported to cause and exaggerate motor deficits and neurodegenerative events in experimental PD models. We studied the effect of chronic mild stress (CMS) (pre, post and pre & post) exposure mediated depression on motor and non-motor symptoms, oxidative stress, inflammation and brain derived neurotrophic factor (BDNF) levels and its related signalling molecules against the 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine/probenecid (MPTP/p) induced neurotoxicity in mice...
February 6, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28182708/comparison-of-brain-serotonin-transporter-using-i-123-adam-between-obese-and-non-obese-young-adults-without-an-eating-disorder
#12
Chih-Hsing Wu, Chin-Sung Chang, Yen Kuang Yang, Lie-Hang Shen, Wei-Jen Yao
Cerebral serotonin metabolism has an important but controversial role in obesity. However, it is not given enough attention in morbidly obese young adults. We used single photon emission computed tomography (SPECT) with [I-123]-labeled 2-((2-((dimethylamino)methyl)phenyl)thio)-5-iodophenylamine (ADAM) to investigate changes in serotonin transporter (SERT) availability in 10 morbidly obese young adults without an eating disorder (M/F = 5/5, body mass index (BMI): 40.3 ± 4.1 kg/m2, percentage of body fat (BF%): 46...
2017: PloS One
https://www.readbyqxmd.com/read/28176268/no-genetic-association-between-attention-deficit-hyperactivity-disorder-adhd-and-parkinson-s-disease-in-nine-adhd-candidate-snps
#13
Julia M Geissler, Marcel Romanos, Manfred Gerlach, Daniela Berg, Claudia Schulte
Attention-deficit/hyperactivity disorder (ADHD) and Parkinson's disease (PD) involve pathological changes in brain structures such as the basal ganglia, which are essential for the control of motor and cognitive behavior and impulsivity. The cause of ADHD and PD remains unknown, but there is increasing evidence that both seem to result from a complicated interplay of genetic and environmental factors affecting numerous cellular processes and brain regions. To explore the possibility of common genetic pathways within the respective pathophysiologies, nine ADHD candidate single nucleotide polymorphisms (SNPs) in seven genes were tested for association with PD in 5333 cases and 12,019 healthy controls: one variant, respectively, in the genes coding for synaptosomal-associated protein 25 k (SNAP25), the dopamine (DA) transporter (SLC6A3; DAT1), DA receptor D4 (DRD4), serotonin receptor 1B (HTR1B), tryptophan hydroxylase 2 (TPH2), the norepinephrine transporter SLC6A2 and three SNPs in cadherin 13 (CDH13)...
February 7, 2017: Attention Deficit and Hyperactivity Disorders
https://www.readbyqxmd.com/read/28176009/dopamine-and-serotonin-modulation-of-motor-and-non-motor-functions-of-the-non-human-primate-striato-pallidal-circuits-in-normal-and-pathological-states
#14
REVIEW
Véronique Sgambato-Faure, Léon Tremblay
Thanks to the non-human primate (NHP), we have shown that the pharmacological disturbance of the anterior striatum or of external globus pallidus triggers a set of motivation and movement disorders, depending on the functional subterritory involved. One can, therefore, assume that the aberrant activity of the different subterritories of basal ganglia (BG) could lead to different behavioral disorders in neuropsychiatric disorders as Tourette's syndrome and Parkinson's disease. We are now addressing in the NHP the impact of modulating dopamine or serotonin within the BG on behavioral disorders...
February 7, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28174689/characterization-of-murine-polyspecific-monoamine-transporters
#15
Yamato Miura, Takeo Yoshikawa, Fumito Naganuma, Tadaho Nakamura, Tomomitsu Iida, Anikó Kárpáti, Takuro Matsuzawa, Asuka Mogi, Ryuichi Harada, Kazuhiko Yanai
The dysregulation of monoamine clearance in the central nervous system occurs in various neuropsychiatric disorders, and the role of polyspecific monoamine transporters in monoamine clearance is increasingly highlighted in recent studies. However, no study to date has properly characterized polyspecific monoamine transporters in the mouse brain. In the present study, we examined the kinetic properties of three mouse polyspecific monoamine transporters [organic cation transporter 2 (Oct2), Oct3, and plasma membrane monoamine transporter (Pmat)] and compared the absolute mRNA expression levels of these transporters in various brain areas...
February 2017: FEBS Open Bio
https://www.readbyqxmd.com/read/28168960/sex-specific-neurodevelopmental-programming-by-placental-insulin-receptors-on-stress-reactivity-and-sensorimotor-gating
#16
Stefanie L Bronson, Jennifer C Chan, Tracy L Bale
BACKGROUND: Diabetes, obesity, and overweight are prevalent pregnancy complications that predispose offspring to neurodevelopmental disorders, including autism, attention-deficit/hyperactivity disorder, and schizophrenia. Although male individuals are three to four times more likely than female individuals to develop these disorders, the mechanisms driving the sex specificity of disease vulnerability remain unclear. Because defective placental insulin receptor (InsR) signaling is a hallmark of pregnancy metabolic dysfunction, we hypothesized that it may be an important contributor and novel mechanistic link to sex-specific neurodevelopmental changes underlying disease risk...
December 30, 2016: Biological Psychiatry
https://www.readbyqxmd.com/read/28163672/targeting-neuroblastoma-cell-surface-proteins-recommendations-for-homology-modeling-of-hnet-alk-and-trkb
#17
Yazan Haddad, Zbyněk Heger, Vojtech Adam
Targeted therapy is a promising approach for treatment of neuroblastoma as evident from the large number of targeting agents employed in clinical practice today. In the absence of known crystal structures, researchers rely on homology modeling to construct template-based theoretical structures for drug design and testing. Here, we discuss three candidate cell surface proteins that are suitable for homology modeling: human norepinephrine transporter (hNET), anaplastic lymphoma kinase (ALK), and neurotrophic tyrosine kinase receptor 2 (NTRK2 or TrkB)...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28160035/brexpiprazole-reduces-hyperactivity-impulsivity-and-risk-preference-behavior-in-mice-with-dopamine-transporter-knockdown-a-model-of-mania
#18
Morgane Milienne-Petiot, Mark A Geyer, Jørn Arnt, Jared W Young
RATIONALE: Bipolar disorder (BD) is a unique mood disorder defined by periods of depression and mania. The defining diagnosis of BD is the presence of mania/hypomania, with symptoms including hyperactivity and risk-taking. Since current treatments do not ameliorate cognitive deficits such as risky decision-making, and impulsivity that can negatively affect a patient's quality of life, better treatments are needed. OBJECTIVES: Here, we tested whether acute treatment with brexpiprazole, a serotonin-dopamine activity modulator with partial agonist activity at D2/3 and 5-HT1A receptors, would attenuate the BD mania-relevant behaviors of the dopamine transporter (DAT) knockdown mouse model of mania...
February 3, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28127108/the-development-of-screening-methods-to-identify-drugs-to-limit-er-stress-using-wild-type-and-mutant-serotonin-transporter
#19
Kazusa Katarao, Seiya Murakawa, Masaya Asano, Naoto Usuki, Hikaru Yamamoto, Toshihiko Shirafuji, Shigeru Tanaka, Izumi Hide, Norio Sakai
The function of the serotonin transporter (SERT) is regulated by its membrane trafficking. Previously, we showed that the C-terminus-deleted mutant of SERT (SERTΔCT) exhibited an aberrant membrane trafficking and subsequent retention at the endoplasmic reticulum (ER). In addition, we found that proteasome inhibitor-induced ER stress resulted in the impairment of SERT membrane trafficking and retention of SERT at the ER, an impairment very similar to that of SERTΔCT. Based on the result that the chemical chaperone 4-phnylbutulic acid (4-PBA), which relieves ER stress, accelerated the membrane trafficking and upregulated SERT activity, we hypothesized that drugs that facilitate the membrane trafficking of SERT would have potential therapeutic effects on an ER stress-related disease...
December 28, 2016: Acta Histochemica et Cytochemica
https://www.readbyqxmd.com/read/28122248/mdma-induced-neurotoxicity-of-serotonin-neurons-involves-autophagy-and-rilmenidine-is-protective-against-its-pathobiology
#20
Linda D Mercer, Gavin C Higgins, Chew L Lau, Andrew J Lawrence, Philip M Beart
Toxicity of 3,4-methylenedioxymethamphetamine (MDMA) towards biogenic amine neurons is well documented and in primate brain predominantly affects serotonin (5-HT) neurons. MDMA induces damage of 5-HT axons and nerve fibres and intracytoplasmic inclusions. Whilst its pathobiology involves mitochondrially-mediated oxidative stress, we hypothesised MDMA possessed the capacity to activate autophagy, a proteostatic mechanism for degradation of cellular debris. We established a culture of ventral pons from embryonic murine brain enriched in 5-HT neurons to explore mechanisms of MDMA neurotoxicity and recruitment of autophagy, and evaluated possible neuroprotective actions of the clinically approved agent rilmenidine...
January 22, 2017: Neurochemistry International
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