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https://www.readbyqxmd.com/read/28821725/interplay-between-maternal-slc6a4-mutation-and-prenatal-stress-a-possible-mechanism-for-autistic-behavior-development
#1
Calvin P Sjaarda, Patrick Hecht, Amy J M McNaughton, Audrina Zhou, Melissa L Hudson, Matt J Will, Garth Smith, Muhammad Ayub, Ping Liang, Nansheng Chen, David Beversdorf, Xudong Liu
The low activity allele of the maternal polymorphism, 5HTTLPR, in the serotonin transporter, SLC6A4, coupled with prenatal stress is reported to increase the risk for children to develop autism spectrum disorder (ASD). Similarly, maternal Slc6a4 knock-out and prenatal stress in rodents results in offspring demonstrating ASD-like characteristics. The present study uses an integrative genomics approach to explore mechanistic changes in early brain development in mouse embryos exposed to this maternal gene-environment phenomenon...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819255/mouse-strain-differences-in-ssri-sensitivity-correlate-with-serotonin-transporter-binding-and-function
#2
Zeng-Liang Jin, Xiao-Fei Chen, Yu-Hua Ran, Xiao-Rong Li, Jie Xiong, Yuan-Yuan Zheng, Na-Na Gao, Yun-Feng Li
Selective serotonin reuptake inhibitors (SSRIs) bind 5-HT transporters, leading to the accumulation of 5-HT and amelioration of depression. Although different mouse strains show varying sensitivity to SSRIs in mouse models of depression, the underlying mechanism of these strain differences remains unclear. Here, the SSRI citalopram dose-dependently reduced immobility time in both the FST and TST in DBA/2J mice but not C57BL/6J mice, whereas fluoxetine showed the opposite results. Paroxetine similarly reduced immobility time in both strains...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818525/whole-transcriptome-microarray-analysis-reveals-regulation-of-rab4-by-rbm5-in-neurons
#3
Travis C Jackson, Shawn E Kotermanski, Patrick M Kochanek
RNA binding motif 5 (RBM5) is a nuclear protein that modulates gene transcription and mRNA splicing in cancer cells. The brain is among the highest RBM5 expressing organ in the body but its mRNA target(s) or functions in the CNS have not been elucidated. Here we knocked down (KO) RBM5 in primary rat cortical neurons and analyzed total RNA extracts by gene microarray vs. neurons transduced with lentivirus to deliver control (non-targeting) shRNA. The mRNA levels of Sec23A (involved in ER-Golgi transport) and the small GTPase Rab4a (involved in endocytosis/protein trafficking) were increased in RBM5 KO neurons relative to controls...
August 14, 2017: Neuroscience
https://www.readbyqxmd.com/read/28815595/sigma-1-receptor-ligands-inhibit-catecholamine-secretion-from-adrenal-chromaffin-cells-due-to-block-of-nicotinic-acetylcholine-receptors
#4
Rebecca L Brindley, Mary Beth Bauer, Nolan D Hartley, Kyle J Horning, Kevin P M Currie
Adrenal chromaffin cells (ACCs) are the neuroendocrine arm of the sympathetic nervous system and key mediators of the physiological stress response. Acetylcholine (ACh) released from preganglionic splanchnic nerves activates nicotinic acetylcholine receptors (nAChRs) on chromaffin cells causing membrane depolarization, opening voltage-gated Ca(2+) channels (VGCC), and exocytosis of catecholamines and neuropeptides. The serotonin transporter (SERT) is expressed in ACCs and interacts with 5-HT1A receptors to control secretion...
August 16, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28805431/disentangling-the-effects-of-serotonin-on-risk-perception-s-carriers-of-5-httlpr-are-primarily-concerned-with-the-magnitude-of-the-outcomes-not-the-uncertainty
#5
Philip Millroth, Peter Juslin, Elias Eriksson, Thomas Agren
Serotonin signaling is vital for reward processing, and hence, also for decision-making. The serotonin transporter gene linked polymorphic region (5-HTTLPR) has been connected to decision making, suggesting that short-allele carriers (s) are more risk averse than long-allele homozygotes (ll). However, previous research has not identified if this occurs because s-carriers (i) are more sensitive to the uncertainty of the outcomes or (ii) are more sensitive to the magnitude of the outcomes. This issue was disentangled using a willingness-to-pay task, where the participants evaluated prospects involving certain gains, uncertain gains, and ambiguous gains...
August 14, 2017: Behavioral Neuroscience
https://www.readbyqxmd.com/read/28800511/the-serotonin-transporter-promoter-variant-5-httlpr-and-childhood-adversity-are-associated-with-the-personality-trait-openness-to-experience
#6
Md Shafiqur Rahman, Peter Guban, Mei Wang, Philippe A Melas, Yvonne Forsell, Catharina Lavebratt
There is evidence supporting an association between the serotonin-transporter-linked polymorphic region (5-HTTLPR) and the Five Factor Model (FFM) of human personality. 5-HTTLPR has also been found to interact with stressful life events to increase risk of psychopathology. In the present study, by taking into account stressful life events in the form of childhood adversity, we examined the association between 5-HTTLPR and FFM traits using an adult Swedish cohort (N = 3112). We found that 5-HTTLPR was significantly associated with openness (to experience)...
July 31, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28796292/exposure-to-low-environmental-concentrations-of-manganese-lead-and-cadmium-alters-the-serotonin-system-of-blue-mussels
#7
Marc Fraser, Marlène Fortier, Delphine Foucher, Pierre-Hervé Roumier, Pauline Brousseau, Michel Fournier, Céline Surette, Cathy Vaillancourt
Serotonin plays a crucial role in mussel survival and reproduction. Although serotonin system can be affected by metals, the effects of environmental concentration of metals, such as manganese (Mn), lead (Pd), and cadmium (Cd), have never been studied in blue mussels. This study aims to determine the effects of exposure to Mn, Pb or Cd on serotonin levels, monoamine oxidase (MAO) activity, and serotonin transporter (SERT) in the blue mussel, Mytilus edulis. Mussels were exposed in vivo to increasing and environmentally relevant doses of Mn (10-1000 nM; 0...
August 10, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28793232/interaction-effect-between-5-httlpr-and-htr1a-rs6295-polymorphisms-on-the-frontoparietal-network
#8
Haixia Long, Bing Liu, Chao Wang, Xiaolong Zhang, Jin Li, Chunshui Yu, Tianzi Jiang
Previous studies have shown a close relationship between the serotonin system and working memory, but the neural mechanism for the role of the serotonin system on the working memory is unclear. The frontoparietal network is involved in working memory and is associated with the serotonin system. Therefore, this study investigated the interaction effect of the serotonin transporter-linked polymorphic region (5-HTTLPR) and the polymorphism in the serotonin 1A receptor gene (rs6295) on the frontoparietal network obtained from the independent component analysis in a large, young Chinese sample population...
August 6, 2017: Neuroscience
https://www.readbyqxmd.com/read/28790887/mir-16-and-fluoxetine-both-reverse-autophagic-and-apoptotic-change-in-chronic-unpredictable-mild-stress-model-rats
#9
Yang Yang, Zhiying Hu, Xiaoxue Du, Henry Davies, Xue Huo, Marong Fang
In the clinic selective serotonin reuptake inhibitors (SSRIs), like Fluoxetine, remain the primary treatment for major depression. It has been suggested that miR-16 regulates serotonin transporters (SERT) via raphe nuclei and hippocampal responses to antidepressants. However, the underlying mechanism and regulatory pathways are still obtuse. Here, a chronic unpredicted mild stress (CUMS) depression model in rats was established, and then raphe nuclei miR-16 and intragastric Fluoxetine injections were administered for a duration of 3 weeks...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28774705/serotonin-transporter-gene-promoter-methylation-in-peripheral-cells-in-healthy-adults-neural-correlates-and-tissue-specificity
#10
Elmira Ismaylova, Jessica Di Sante, Moshe Szyf, Zsofia Nemoda, Wei-Jo Yu, Florence B Pomares, Gustavo Turecki, Gabriella Gobbi, Frank Vitaro, Richard E Tremblay, Linda Booij
Early adversity can influence gene expression via epigenetic mechanisms, including DNA methylation. Peripheral tissues are essential in psychiatric epigenetics, as methylation generally cannot be assessed in the living human brain. Several magnetic resonance imaging (MRI) studies show associations of peripheral serotonin transporter gene (SLC6A4) methylation with function and/or structure of frontal-limbic circuits and brain's resting-state. Commonly used samples are derived from blood, saliva or buccal cells...
July 31, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28767225/new-trends-and-current-status-of%C3%A2-pet-and-spect-radioligands-for-neuronal%C3%A2-5-ht%C3%A2-receptors-5-htrs-and-serotonin-transporter-sert
#11
Puja Panwar Hazari, Ankita Pandey, Shubhra Chaturvedi, Anil Kumar Mishra
The critical role of serotonin (5-hydroxytryptamine; 5-HT) and its receptors (5-HTRs) in the pathophysiology of various neuropsychiatric and neurodegenerative disorders render them attractive diagnostic/therapeutic targets for brain disorders. Therefore, in vivo assessment of binding of 5-HT receptor ligands under a multitude of physiologic and pathologic scenario may support the more accurate identification of disease and its progression, patient's response to therapy, and the screening of novel therapeutic strategies...
August 2, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28766852/serotonin-transporter-promoter-polymorphism-modulates-the-ability-to-control-food-intake-effect-on-total-weight-loss
#12
Gemma Bonnet, Purificación Gómez-Abellán, Beatriz Vera, Juan Francisco Sánchez-Romera, Antonio M Hernández-Martínez, Silvia Sookoian, Carlos Jose Pirola, Marta Garaulet
SCOPE: The biggest challenge for losing weight is the ability to control the amount of food eaten; the tendency to overeat is called disinhibition. Our aims were to determine whether a) the SLC6A4-promoter variant (5-HTTLPR) relates to disinhibition; b) this association could affect total weight-loss during a behavioral/dietary treatment for obesity. METHODS AND RESULTS: 2961 subjects attended voluntarily five weight-loss clinics; a subsample (n = 624) was recruited for SLC6A4 genotyping...
August 2, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28756214/neonatal-fluoxetine-exposure-modulates-serotonergic-neurotransmission-and-disturb-inhibitory-action-of-serotonin-on-food-intake
#13
Isabeli Lins Pinheiro, Aline Isabel da Silva, Andressa Reginato, Reginaldo Correia da Silva Filho, Lígia Cristina Monteiro Galindo, Rhowena Jane Barbosa Matos, Jose Candido de Souza Ferraz Junior, Ana Elisa Toscano Meneses da Silva, Marciane Milanski Ferreira, Raul Manhães de Castro, Sandra Lopes de Souza
The neurotransmitter serotonin (5-HT) acts as an important regulator of the critical neurodevelopmental processes and thus alterations in 5-HT signaling early promotes permanent structural and functional changes in brain. The selective serotonin reuptake inhibitors (SSRIs), as fluoxetine and citalopram, blocking serotonin transporter (SERT) at the presynaptic neuron, which regulates extracellular 5-HT levels. Evidence suggests that the exposure to SSRIs in the neurodevelopmental period may alters 5-HT signaling sensitivity on food intake control...
July 26, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28756191/serotonin-transporter-immunoreactivity-is-modulated-during-development-and-after-fluoxetine-treatment-in-the-rodent-visual-system
#14
Wandilson Dos Santos Rodrigues Junior, Priscilla Oliveira-Silva, Adriana da Cunha Faria-Melibeu, Paula Campello-Costa, Claudio Alberto Serfaty
The serotonin transporter (5-HTT) regulates serotonin homeostasis and has been used as a target for different drugs in depression treatment. Although the serotonergic system has received a lot of attention, little is known about the effects of these drugs over serotonin transporters. In this work, we investigated the expression pattern of 5-HTT during development of the visual system and the influence of fluoxetine on different signaling pathways. Our data showed that the expression of 5-HTT has a gradual increase from postnatal day 0 until 42 and decrease afterwards...
July 26, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28755886/pharmacological-profile-of-mephedrone-analogs-and-related-new-psychoactive-substances
#15
REVIEW
Dino Luethi, Karolina E Kolaczynska, Luca Docci, Stephan Krähenbühl, Marius C Hoener, Matthias E Liechti
BACKGROUND: Mephedrone is a synthetic cathinone and one of the most popular recreationally used new psychoactive substances. The aim of the present study was to characterize the in vitro pharmacology of novel analogs of mephedrone and related newly emerged designer stimulants. METHODS: We determined norepinephrine, dopamine, and serotonin transporter inhibition potencies and monoamine release in transporter-transfected human embryonic kidney 293 cells. We also assessed monoamine receptor and transporter binding affinities...
July 26, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28754972/the-association-of-ambient-temperature-and-violent-crime
#16
Jari Tiihonen, Pirjo Halonen, Laura Tiihonen, Hannu Kautiainen, Markus Storvik, James Callaway
It is controversial if global warming will result into increased crime and conflict rate, and no causal neurobiological mechanisms have been proposed for the putative association between ambient temperature and aggressive behavior. This study shows that during 1996-2013, ambient temperature explained 10% of variance in the violent crime rate in Finland, corresponding to a 1.7% increase/degree centigrade. Ambient temperature also correlated with a one month delay in circannual changes in peripheral serotonin transporter density among both offenders and healthy control subjects, which itself correlated strongly with the monthly violent crime rate...
July 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28748210/dataset-on-genetic-and-physiological-adults-responses-to-social-distress
#17
Andrea Bonassi, Tommaso Ghilardi, Anna Truzzi, Ilaria Cataldo, Atiqah Azhari, Peipei Setoh, Kazuyuki Shinohara, Gianluca Esposito
Both expectations towards interactions with conspecifics, and genetic predispositions, affect adults׳ social behaviors. However, the underlying mechanisms remain largely unknown. Here, we report data to investigate the interaction between genetic factors, (oxytocin receptor (OXTR) and serotonin transporter (5-HTTLPR) polymorphisms), and adult interactional patterns in shaping physiological responses to social distress. During the presentation of distress vocalizations (cries of human female, infants and bonobos) we assessed participants׳ (N = 42 males) heart rate (HR) and peripheral nose temperature, which index state of arousal and readiness to action...
August 2017: Data in Brief
https://www.readbyqxmd.com/read/28743254/association-between-serotonin-transporter-gene-polymorphisms-and-increased-suicidal-risk-among-hiv-positive-patients-in-uganda
#18
Allan Kalungi, Soraya Seedat, Sian M J Hemmings, Lize van der Merwe, Moses L Joloba, Ann Nanteza, Noeline Nakassujja, Harriet Birabwa, Jennifer Serwanga, Pontiano Kaleebu, Eugene Kinyanda
BACKGROUND: Persons living with HIV/AIDS (PLWHA) are at an increased risk of suicide. Increased suicidal risk is a predictor of future attempted and completed suicides and has been associated with poor quality of life and poor adherence with antiretroviral therapy. Clinical risk factors have low predictive value for suicide, hence the interest in potential neurobiological correlates and specific heritable markers of suicide vulnerability. The serotonin transporter gene has previously been implicated in the aetiology of increased suicidal risk in non-HIV infected study populations and its variations may provide a platform for identifying genetic risk for suicidality among PLWHA...
July 25, 2017: BMC Genetics
https://www.readbyqxmd.com/read/28741031/inhibition-of-serotonin-transporters-disrupts-the-enhancement-of-fear-memory-extinction-by-3-4-methylenedioxymethamphetamine-mdma
#19
Matthew B Young, Seth D Norrholm, Lara M Khoury, Tanja Jovanovic, Sheila A M Rauch, Collin M Reiff, Boadie W Dunlop, Barbara O Rothbaum, Leonard L Howell
RATIONALE: 3,4-Methylenedioxymethamphetamine (MDMA) persistently improves symptoms of post-traumatic stress disorder (PTSD) when combined with psychotherapy. Studies in rodents suggest that these effects can be attributed to enhancement of fear memory extinction. Therefore, MDMA may improve the effects of exposure-based therapy for PTSD, particularly in treatment-resistant patients. However, given MDMA's broad pharmacological profile, further investigation is warranted before moving to a complex clinical population...
July 24, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28738293/oxytocin-effects-on-emotional-response-to-others-faces-via-serotonin-system-in-autism-a-pilot-study
#20
Mina Fukai, Tetsu Hirosawa, Mitsuru Kikuchi, Yasuomi Ouchi, Tetsuya Takahashi, Yuko Yoshimura, Yoshiaki Miyagishi, Hirotaka Kosaka, Masamichi Yokokura, Etsuji Yoshikawa, Tomoyasu Bunai, Yoshio Minabe
The oxytocin (OT)-related serotonergic system is thought to play an important role in the etiology and social symptoms of autism spectrum disorder (ASD). However, no evidence exists for the relation between the prosocial effect of chronic OT administration and the brain serotonergic system. Ten male subjects with ASD were administered OT for 8-10 weeks in an open-label, single-arm, non-randomized, uncontrolled manner. Before and during the OT treatment, positron emission tomography was used with the ((11)C)-3-amino-4-(2-[(demethylamino)methyl]phenylthio)benzonitrile((11)C-DASB) radiotracer...
June 28, 2017: Psychiatry Research
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