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https://www.readbyqxmd.com/read/28431168/identifying-new-susceptibility-genes-on-dopaminergic-and-serotonergic-pathways-for-the-framing-effect-in-decision-making
#1
Xiaoxue Gao, Jinting Liu, Pingyuan Gong, Junhui Wang, Wan Fang, Hongming Yan, Lusha Zhu, Xiaolin Zhou
The framing effect refers the tendency to be risk-averse when options are presented positively but be risk-seeking when the same options are presented negatively during decision-making. This effect has been found to be modulated by the serotonin transporter gene (SLC6A4) and the catechol-o-methyltransferase gene (COMT) polymorphisms, which are on the dopaminergic and serotonergic pathways and which are associated with affective processing. The current study aimed to identify new genetic variations of genes on dopaminergic and serotonergic pathways that may contribute to individual differences in the susceptibility to framing...
April 19, 2017: Social Cognitive and Affective Neuroscience
https://www.readbyqxmd.com/read/28414050/a-study-of-time-and-sex-dependent-effects-of-vortioxetine-on-rat-sexual-behavior-possible-roles-of-direct-receptor-modulation
#2
Yan Li, Alan L Pehrson, Ronald S Oosting, Maria Gulinello, Berend Olivier, Connie Sanchez
Treatment-related sexual dysfunction is a common side effect of antidepressants and contributes to patient non-compliance or treatment cessation. However, the multimodal antidepressant, vortioxetine, demonstrates low sexual side effects in depressed patients. To investigate the mechanisms involved, sexual behavior was assessed in male and female rats after acute, and repeated (7 and 14 days) treatment with vortioxetine, flesinoxan (a 5-HT1A agonist), CP-94253 (a 5-HT1B agonist), or ondansetron (a 5-HT3 antagonist)...
April 13, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28407315/drugs-with-antidepressant-properties-affect-tryptophan-metabolites-differently-in-rodent-models-with-depression-like-behavior
#3
Amanda Eskelund, Yan Li, David P Budac, Heidi K Müller, Gulinello Maria, Connie Sanchez, Gregers Wegener
The metabolism of tryptophan through kynurenine and serotonin pathways is linked to depression. Here, effects of different drugs with antidepressant properties (vortioxetine, fluoxetine and ketamine) on various tryptophan metabolites in different brain regions and plasma were examined using tandem mass spectrometry (LC-MS/MS), in Flinders Sensitive Line (FSL) rats, a genetic rat model of depression, and its controls: Flinders Resistant Line (FRL) and Sprague-Dawley (SD) rats. Protein levels of kynurenine pathway enzymes were measured in the brains and livers of these rat strains...
April 13, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28406285/serotonin-and-serotonin-transporters-in-the-adrenal-medulla-a-potential-hub-for-modulation-of-the-sympathetic-stress-response
#4
Rebecca L Brindley, Mary Beth Bauer, Randy D Blakely, Kevin P M Currie
Serotonin (5-HT) is an important neurotransmitter in the central nervous system where it modulates circuits involved in mood, cognition, movement, arousal, and autonomic function. The 5-HT transporter (SERT; SLC6A4) is a key regulator of 5-HT signaling, and genetic variations in SERT are associated with various disorders including depression, anxiety, and autism. This review focuses on the role of SERT in the sympathetic nervous system. Autonomic/sympathetic dysfunction is evident in patients with depression, anxiety, and other diseases linked to serotonergic signaling...
April 13, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28405636/when-transporters-fail-to-be-transported-how-to-rescue-folding-deficient-slc6-transporters
#5
Sonja Sucic, Ameya Kasture, H M Mazhar Asjad, Carina Kern, Ali El-Kasaby, Michael Freissmuth
The human dopamine transporter (hDAT) belongs to the solute carrier 6 (SLC6) gene family. Point mutations in hDAT (SLC6A3) have been linked to a syndrome of dopamine transporter deficiency or infantile dystonia/parkinsonism. The mutations impair DAT folding, causing retention of variant DATs in the endoplasmic reticulum and subsequently impair transport activity. The folding trajectory of DAT itself is not understood, though many insights have been gained from studies of folding-deficient mutants of the closely related serotonin transporter (SERT); i...
December 30, 2016: Journal of Neurology & Neuromedicine
https://www.readbyqxmd.com/read/28396142/atypical-binding-at-dopamine-and-serotonin-transporters-contribute-to-the-discriminative-stimulus-effects-of-mephedrone
#6
Alyssa F DeLarge, Laura L Erwin, Peter J Winsauer
Mephedrone (4-methylmethcathinone), a constituent of the recreational substances known as "bath salts", is a synthetic cathinone that can produce auditory and visual hallucinations, as well as problematic cardiovascular effects. This study compared the discriminative stimulus effects of mephedrone (0.32-10 mg/kg) with other prototypical drugs of abuse: cocaine (0.56-32 mg/kg), d-amphetamine (0.18-3.2 mg/kg), ketamine (1.8-18 mg/kg), phencyclidine (PCP, 1-5.6 mg/kg), heroin (1-10 mg/kg), 2,5-dimethoxy-4-iodoamphetamine (R-DOI, 0...
April 7, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28391138/associations-between-serotonin-transporter-and-behavioral-traits-and-diagnoses-related-to-anxiety
#7
Ardesheer Talati, Zagaa Odgerel, Priya J Wickramaratne, Andrea Norcini Pala, Jamie L Skipper, Jay A Gingrich, Myrna M Weissman
The role of the serotonin transporter promoter-linked polymorphism (5-HTTLPR) in psychiatric disease remains unclear. Behavioral traits could serve as alternative outcomes that are stable, precede psychopathology, and capture more sub-clinical variation. We test associations between 5-HTTLPR and (1) behavioral traits and (2) clinical diagnoses of anxiety and depression. Second and third generation participants (N=203, 34.2±13.8 years, 54% female) at high- or low- familial risk for depression (where risk was defined by the presence of major depression in the 1st generation) were assessed longitudinally using the Schedule for Affective Disorders and Schizophrenia-lifetime interview, Barratt Impulsiveness Scale-11, Buss-Perry Aggression Questionnaire, and the NEO-Five Factor Inventory...
March 21, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28385052/perinatal-ssri-exposure-permanently-alters-cerebral-serotonin-receptor-mrna-in-mice-but-does-not-impact-adult-behaviors
#8
Lauritz R Meyer, Benjamin Dexter, Cecilia Lo, Elizabeth Kenkel, Takahito Hirai, Robert D Roghair, Sarah E Haskell
PURPOSE: Associations have been made between maternal selective serotonin reuptake inhibitor (SSRI) use during pregnancy and altered behavior in offspring, including an increased risk of autism. Given the important role serotonin plays in behavior, we hypothesized SSRI exposure in the perinatal period would alter central serotonin receptor expression and program adult behaviors in mice. METHODS: Female mice were injected with sertraline or saline throughout pregnancy...
April 6, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28383321/antidepressive-like-effect-of-imperatorin-from-angelica-dahurica-in-prenatally-stressed-offspring-rats-through-5-hydroxytryptamine-system
#9
Yanjun Cao, Jiahui Liu, Qiong Wang, Minghui Liu, Ying Cheng, Xiaoxiao Zhang, Tianwei Lin, Zhongliang Zhu
Adolescence is a time of continued brain maturation, particularly in limbic and cortical regions, which undoubtedly plays a role in the physiological and emotional changes. Prenatally stressed offspring rats were used to investigate the potential antidepressive-like effects of imperatorin (IMP) extracted from the root of radix angelica. After 4 weeks of treatment of IMP, behavioral tests (sucrose-preference test, forced-swimming test, and open-field test) were measured. 5-hydroxytryptamine (5-HT) concentration in the hippocampus and frontal cortex was measured using an enzyme-linked immunosorbent assay...
April 5, 2017: Neuroreport
https://www.readbyqxmd.com/read/28379618/association-between-serotonin-denervation-and-resting-state-functional-connectivity-in-mild-cognitive-impairment
#10
Frederick S Barrett, Clifford I Workman, Haris I Sair, Alena V Savonenko, Michael A Kraut, Devin J Sodums, Jin J Joo, Najlla Nassery, Christopher M Marano, Cynthia A Munro, Jason Brandt, Yun Zhou, Dean F Wong, Gwenn S Smith
Resting-state functional connectivity alterations have been demonstrated in Alzheimer's disease (AD) and mild cognitive impairment (MCI) before the observation of AD neuropathology, but mechanisms driving these changes are not well understood. Serotonin neurodegeneration has been observed in MCI and AD and is associated with cognitive deficits and neuropsychiatric symptoms, but the role of the serotonin system in relation to brain network dysfunction has not been a major focus of investigation. The current study investigated the relationship between serotonin transporter availability (SERT; measured using positron emission tomography) and brain network functional connectivity (measured using resting-state functional MRI) in 20 participants with MCI and 21 healthy controls...
April 5, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28377990/the-effect-of-an-adverse-psychological-environment-on-salivary-cortisol-levels-in-the-elderly-differs-by-5-httlpr-genotype
#11
Marie-Laure Ancelin, Jacqueline Scali, Joanna Norton, Karen Ritchie, Anne-Marie Dupuy, Isabelle Chaudieu, Joanne Ryan
BACKGROUND: An adverse psychological environment (e.g. stressful events or depression) has been shown to influence basal cortisol levels and cortisol response to stress. This differs depending on the adverse stimuli, but also varies across individuals and may be influenced by genetic predisposition. An insertion/deletion polymorphism in the serotonin transporter gene (5-HTTLPR) is a strong candidate in this regard. OBJECTIVE: To investigate how stressful life events and depression are associated with diurnal cortisol levels in community-dwelling elderly and determine whether this varies according to genetic variability in the 5-HTTLPR...
December 2017: Neurobiology of Stress
https://www.readbyqxmd.com/read/28373689/collaborative-meta-analysis-finds-no-evidence-of-a-strong-interaction-between-stress-and-5-httlpr-genotype-contributing-to-the-development-of-depression
#12
R C Culverhouse, N L Saccone, A C Horton, Y Ma, K J Anstey, T Banaschewski, M Burmeister, S Cohen-Woods, B Etain, H L Fisher, N Goldman, S Guillaume, J Horwood, G Juhasz, K J Lester, L Mandelli, C M Middeldorp, E Olié, S Villafuerte, T M Air, R Araya, L Bowes, R Burns, E M Byrne, C Coffey, W L Coventry, K A B Gawronski, D Glei, A Hatzimanolis, J-J Hottenga, I Jaussent, C Jawahar, C Jennen-Steinmetz, J R Kramer, M Lajnef, K Little, H M Zu Schwabedissen, M Nauck, E Nederhof, P Petschner, W J Peyrot, C Schwahn, G Sinnamon, D Stacey, Y Tian, C Toben, S Van der Auwera, N Wainwright, J-C Wang, G Willemsen, I M Anderson, V Arolt, C Åslund, G Bagdy, B T Baune, F Bellivier, D I Boomsma, P Courtet, U Dannlowski, E J C de Geus, J F W Deakin, S Easteal, T Eley, D M Fergusson, A M Goate, X Gonda, H J Grabe, C Holzman, E O Johnson, M Kennedy, M Laucht, N G Martin, M R Munafò, K W Nilsson, A J Oldehinkel, C A Olsson, J Ormel, C Otte, G C Patton, B W J H Penninx, K Ritchie, M Sarchiapone, J M Scheid, A Serretti, J H Smit, N C Stefanis, P G Surtees, H Völzke, M Weinstein, M Whooley, J I Nurnberger, N Breslau, L J Bierut
The hypothesis that the S allele of the 5-HTTLPR serotonin transporter promoter region is associated with increased risk of depression, but only in individuals exposed to stressful situations, has generated much interest, research and controversy since first proposed in 2003. Multiple meta-analyses combining results from heterogeneous analyses have not settled the issue. To determine the magnitude of the interaction and the conditions under which it might be observed, we performed new analyses on 31 data sets containing 38 802 European ancestry subjects genotyped for 5-HTTLPR and assessed for depression and childhood maltreatment or other stressful life events, and meta-analysed the results...
April 4, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28362488/serotonin-transporter-associated-protein-complexes-are-enriched-in-synaptic-vesicle-proteins-and-proteins-involved-in-energy-metabolism-and-ion-homeostasis
#13
Jana Haase, Joanna Grudzinska-Goebel, Heidi Kaastrup Müller, Agnieszka Münster-Wandowski, Elysian Chow, Kieran Wynne, Zohreh Farsi, Johannes-Friedrich Zander, Gudrun Ahnert-Hilger
The serotonin transporter (SERT) mediates Na(+)-dependent high-affinity serotonin uptake and plays a key role in regulating extracellular serotonin concentration in the brain and periphery. To gain novel insight into SERT regulation, we conducted a comprehensive proteomics screen to identify components of SERT-associated protein complexes in the brain by employing three independent approaches. In vivo SERT complexes were purified from rat brain using an immobilized high-affinity SERT ligand, amino-methyl citalopram...
April 21, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28362399/methods-to-study-epithelial-transport-protein-function-and-expression-in-native-intestine-and-caco-2-cells-grown-in-3d
#14
Arivarasu N Anabazhagan, Ishita Chatterjee, Shubha Priyamvada, Anoop Kumar, Sangeeta Tyagi, Seema Saksena, Waddah A Alrefai, Pradeep K Dudeja, Ravinder K Gill
The intestinal epithelium has important transport and barrier functions that play key roles in normal physiological functions of the body while providing a barrier to foreign particles. Impaired epithelial transport (ion, nutrient, or drugs) has been associated with many diseases and can have consequences that extend beyond the normal physiological functions of the transporters, such as by influencing epithelial integrity and the gut microbiome. Understanding the function and regulation of transport proteins is critical for the development of improved therapeutic interventions...
March 16, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28361821/candidate-genes-for-alcohol-dependence-a-genetic-association-study-from-india
#15
Savita Malhotra, Debasish Basu, Madhu Khullar, Abhishek Ghosh, Neera Chugh
BACKGROUND & OBJECTIVES: Search for candidate genes for alcohol dependence (AD) has been inconsistent and inconclusive. Moreover, most of the research has been confined to a few specific ethnic groups. Hence, the aim of our study was to explore specific candidate genes for AD in north Indian male population. METHODS: In this clinic-based genetic association study, 210 males with AD and 200 controls matched for age, gender and ethnicity were recruited from the clinic and the general population, respectively...
November 2016: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28343185/frameworking-memory-and-serotonergic-markers
#16
Alfredo Meneses
The evidence for neural markers and memory is continuously being revised, and as evidence continues to accumulate, herein, we frame earlier and new evidence. Hence, in this work, the aim is to provide an appropriate conceptual framework of serotonergic markers associated with neural activity and memory. Serotonin (5-hydroxytryptamine [5-HT]) has multiple pharmacological tools, well-characterized downstream signaling in mammals' species, and established 5-HT neural markers showing new insights about memory functions and dysfunctions, including receptors (5-HT1A/1B/1D, 5-HT2A/2B/2C, and 5-HT3-7), transporter (serotonin transporter [SERT]) and volume transmission present in brain areas involved in memory...
March 27, 2017: Reviews in the Neurosciences
https://www.readbyqxmd.com/read/28342338/antidepressants-and-risk-of-cataract-development-a-population-based-nested-case-control-study
#17
Po-Han Chou, Che-Sheng Chu, Yi-Huei Chen, Min-Yen Hsu, Min-Wei Huang, Tsuo-Hung Lan, Ching-Heng Lin
BACKGROUND: Previous studies demonstrated increased risk of cataract development among users of selective serotonin reuptake inhibitors (SSRIs). However, it remains unknown whether this risk also prevails with the use of other types of antidepressants. The aim of this study was to investigate whether use of antidepressants is associated with an increased risk of cataract development. Moreover, the relationship between binding affinities of serotonin transporter (SERT) of antidepressant and the risk of cataracts is examined...
March 18, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28336296/serotonin-and-dopamine-transporter-pet-changes-in-the-premotor-phase-of-lrrk2-parkinsonism-cross-sectional-studies
#18
Daryl J Wile, Pankaj A Agarwal, Michael Schulzer, Edwin Mak, Katherine Dinelle, Elham Shahinfard, Nasim Vafai, Kazuko Hasegawa, Jing Zhang, Jessamyn McKenzie, Nicole Neilson, Audrey Strongosky, Ryan J Uitti, Mark Guttman, Cyrus P Zabetian, Yu-Shin Ding, Mike Adam, Jan Aasly, Zbigniew K Wszolek, Matthew Farrer, Vesna Sossi, A Jon Stoessl
BACKGROUND: People with Parkinson's disease can show premotor neurochemical changes in the dopaminergic and non-dopaminergic systems. Using PET, we assessed whether dopaminergic and serotonin transporter changes are similar in LRRK2 mutation carriers with Parkinson's disease and individuals with sporadic Parkinson's disease, and whether LRRK2 mutation carriers without motor symptoms show PET changes. METHODS: We did two cross-sectional PET studies at the Pacific Parkinson's Research Centre in Vancouver, BC, Canada...
May 2017: Lancet Neurology
https://www.readbyqxmd.com/read/28325682/5-httlpr-moderates-the-association-between-attention-away-from-angry-faces-and-prospective-depression-among-youth
#19
Jessica L Jenness, Jami F Young, Benjamin L Hankin
Attention bias to emotion has been studied as a risk factor associated with depression. No study has examined whether attention bias within the context of measured genetic risk leads to increased risk for clinical depressive episodes over time. The current study investigated whether genetic risk, as indexed by the serotonin-transporter-linked polymorphic region (5-HTTLPR), moderated the relationship between attention bias to emotional faces and clinical depression onset prospectively across 18-months in a community sample of youth (n = 428; mean age = 11...
February 24, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28324844/serotonin-transporter-and-receptor-ligands-with-antidepressant-activity-as-neuroprotective-and-proapoptotic-agents
#20
REVIEW
Zdzislaw Chilmonczyk, Andrzej J Bojarski, Andrzej Pilc, Ingebrigt Sylte
Serotonin exhibits multiple non-neural functions involved in essential hypertension, early embryogenesis, follicle maturation and behaviour. The growth stimulatory effects of the neurotransmitter have been described for a variety of cell types. 5-HT was found to induce migration of the human prostate cancer cell lines - PC-3 and Du145 - and several 5-HT1A antagonists and serotonin reuptake inhibitors were reported to inhibit the growth of different tumour cell lines in vitro. Recent studies suggest that neurogenesis is involved in the action of antidepressants and an involvement of antidepressants in adult hippocampal neurogenesis has been demonstrated...
January 22, 2017: Pharmacological Reports: PR
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