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https://www.readbyqxmd.com/read/27929454/thermostabilization-expression-purification-and-crystallization-of-the-human-serotonin-transporter-bound-to-s-citalopram
#1
Jonathan A Coleman, Evan M Green, Eric Gouaux
The serotonin transporter is a sodium and chloride-coupled transporter that "pumps" extracellular serotonin into cells. S-citalopram is a drug used to treat depression and anxiety by binding to the serotonin transporter with high-affinity, blocking serotonin reuptake. Here we report an efficient procedure and a set of tools to stabilize, express, purify, and crystallize serotonin transporter-antibody complexes bound to S-citalopram and other antidepressants. Mutations which stabilize the serotonin transporter were identified using an S-citalopram binding assay...
November 27, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27927740/chronic-vortioxetine-treatment-reduces-exaggerated-expression-of-conditioned-fear-memory-and-restores-active-coping-behavior-in-chronically-stressed-rats
#2
Lauren Hatherall, Connie Sánchez, David A Morilak
BACKGROUND: Stress is a risk factor for depression and anxiety disorders, disrupting neuronal processes leading to exaggerated fear and compromised coping behaviors. Current antidepressants are only partially effective. Vortioxetine, a novel multimodal antidepressant, is a serotonin transporter (SERT) inhibitor, 5-HT3, 5-HT7, and 5-HT1D receptor antagonist, 5-HT1B partial agonist, and 5-HT1A agonist. We have shown that chronic dietary vortioxetine administration reversed stress-induced deficits in cognitive flexibility...
December 7, 2016: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27924137/exercise-induced-stress-behavior-gut-microbiota-brain-axis-and-diet-a-systematic-review-for-athletes
#3
REVIEW
Allison Clark, Núria Mach
Fatigue, mood disturbances, under performance and gastrointestinal distress are common among athletes during training and competition. The psychosocial and physical demands during intense exercise can initiate a stress response activating the sympathetic-adrenomedullary and hypothalamus-pituitary-adrenal (HPA) axes, resulting in the release of stress and catabolic hormones, inflammatory cytokines and microbial molecules. The gut is home to trillions of microorganisms that have fundamental roles in many aspects of human biology, including metabolism, endocrine, neuronal and immune function...
2016: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/27923157/adjuvant-neuronal-nitric-oxide-synthase-inhibition-for-combined-treatment-of-epilepsy-and-comorbid-depression
#4
Tanveer Singh, Rajesh Kumar Goel
BACKGROUND: Elevated nitric oxide (NO) levels in the brain have been apparently associated with depression in kindled animals. Owing to the major role of neuronal nitric oxide synthase (nNOS) in brain and ineffectiveness of antiepileptic drugs (AEDs) in restoring nitrosative stress, the present study was envisaged to evaluate the adjuvant nNOS inhibitor, 7-nitroindazole (7-NI) with valproic acid for combined treatment of epilepsy and associated depression. METHODS: Pentylenetetrazole kindled animals associated with depression were treated with vehicle, valproate (300mg/kg/day ip), valproate with 7-NI (10mg/kg; 20mg/kg; 40mg/kg)/day ip and 7-NI (40mg/kg/day ip) for 15days...
October 4, 2016: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/27912162/serotonin-2a-receptor-5-ht2a-gene-promoter-variant-interacts-with-chronic-perceived-stress-to-modulate-resting-parasympathetic-activity-in-humans
#5
Chuan-Chia Chang, Wen-Hui Fang, Hsin-An Chang, Tieh-Ching Chang, Jia-Fwa Shyu, San-Yuan Huang
Decreased resting vagal (parasympathetic) tone is implicated in the development of stress-related disorders, including anxiety and depression. Chronic stress elevates the expression of serotonin 2A receptors (5-HT2A), while activation of 5-HT2A leads to inhibition of parasympathetic synaptic transmission. The T allele of the promoter variant, rs6311 (C>T), of the 5-HT2A gene has been shown to increase the 5-HT2A expression in vitro and to be associated with anxiety and depressive disorders. We thus hypothesized that the 5-HT2A functional polymorphism may influence resting vagal activity among persons with chronically high levels of perceived stress...
November 16, 2016: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/27910865/auditory-evoked-potential-could-reflect-emotional-sensitivity-and-impulsivity
#6
Ji Sun Kim, Sungkean Kim, Wookyoung Jung, Chang-Hwan Im, Seung-Hwan Lee
Emotional sensitivity and impulsivity could cause interpersonal conflicts and neuropsychiatric problems. Serotonin is correlated with behavioral inhibition and impulsivity. This study evaluated whether the loudness dependence of auditory evoked potential (LDAEP), a potential biological marker of central serotonergic activity, could reflect emotional sensitivity and impulsivity. A total of 157 healthy individuals were recruited, who performed LDAEP and Go/Nogo paradigms during electroencephalogram measurement...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27906972/selective-serotonin-reuptake-inhibitor-ssri-antidepressants-in-pregnancy-and-congenital-anomalies-analysis-of-linked-databases-in-wales-norway-and-funen-denmark
#7
Sue Jordan, Joan K Morris, Gareth I Davies, David Tucker, Daniel S Thayer, Johannes M Luteijn, Margery Morgan, Ester Garne, Anne V Hansen, Kari Klungsøyr, Anders Engeland, Breidge Boyle, Helen Dolk
BACKGROUND: Hypothesised associations between in utero exposure to selective serotonin reuptake inhibitors (SSRIs) and congenital anomalies, particularly congenital heart defects (CHD), remain controversial. We investigated the putative teratogenicity of SSRI prescription in the 91 days either side of first day of last menstrual period (LMP). METHODS AND FINDINGS: Three population-based EUROCAT congenital anomaly registries- Norway (2004-2010), Wales (2000-2010) and Funen, Denmark (2000-2010)-were linked to the electronic healthcare databases holding prospectively collected prescription information for all pregnancies in the timeframes available...
2016: PloS One
https://www.readbyqxmd.com/read/27904611/selective-serotonin-reuptake-inhibitors-and-cardiovascular-events-a-systematic-review
#8
REVIEW
Mohammad Hassan Nezafati, Ali Eshraghi, Mohammad Vojdanparast, Saeed Abtahi, Pouya Nezafati
BACKGROUND: Given the importance of the role of depression in predicting the outcome of cardiovascular disorders, current medications for treating depression, particularly selective serotonin reuptake inhibitors (SSRIs), are taken into consideration. This study aimed to systematically review the published findings in the use of SSRIs and the risk for cardiac events. MATERIALS AND METHODS: An independent review of the Web of Science, PubMed, Scopus, Cochrane, CINAHL, index Copernicus, and Google Scholar, up to 2014, was performed...
2016: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/27904101/probable-serotonin-syndrome-and-withdrawal-symptoms-caused-by-milnacipran
#9
Toru Koshiishi, Kiyoshi Okuyama
 A 70-year-old woman, residing in a nursing home, was admitted to our hospital because of cerebral hemorrhage. She had excessive sweating, a temperature above 37°C, and intermittent muscle spasm such as myoclonus, since the time of admission. We suspected that these symptoms were related to side effects caused by the milnacipran she was taking for depression, prior to hospitalization. After we discontinued milnacipran, the patient began exhibiting withdrawal symptoms such as excitement and insomnia. When we substituted milnacipran with mianserin, the withdrawal symptoms diminished and the excessive sweating and involuntary movement disappeared...
2016: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
https://www.readbyqxmd.com/read/27903721/cross-talk-between-brain-innate-immunity-and-serotonin-signaling-underlies-depressive-like-behavior-induced-by-alzheimer-s-amyloid-%C3%AE-oligomers-in-mice
#10
Jose Henrique Ledo, Estefania P Azevedo, Danielle Beckman, Felipe C Ribeiro, Luis E Santos, Daniela S Razolli, Grasielle C Kincheski, Helen M Melo, Maria Bellio, Antonio L Teixeira, Licio A Velloso, Debora Foguel, Fernanda G De Felice, Sergio T Ferreira
: Considerable clinical and epidemiological evidence links Alzheimer's disease (AD) and depression. However, the molecular mechanisms underlying this connection are largely unknown. We reported recently that soluble Aβ oligomers (AβOs), toxins that accumulate in AD brains and are thought to instigate synapse damage and memory loss, induce depressive-like behavior in mice. Here, we report that the mechanism underlying this action involves AβO-induced microglial activation, aberrant TNF-α signaling, and decreased brain serotonin levels...
November 30, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27901245/transcranial-direct-current-stimulation-for-treatment-resistant-obsessive-compulsive-disorder-report-on-two-cases-and-proposal-for-a-randomized-sham-controlled-trial
#11
Renata de Melo Felipe da Silva, André Russowsky Brunoni, Eurípedes Constantino Miguel, Roseli Gedanke Shavitt
CONTEXT AND OBJECTIVE: Neuromodulation techniques for treating obsessive-compulsive disorder (OCD) have expanded through greater understanding of the brain circuits involved in this disorder. Transcranial direct current stimulation (tDCS), a non-invasive technique, has been studied as an alternative for treatment-resistant OCD. We describe the design of a clinical trial using tDCS for OCD and report on the outcomes from two patients with primary OCD who were resistant to cognitive-behavioral therapy and to selective serotonin reuptake inhibitors, and who received tDCS in an open manner during the training phase for the study procedures...
September 2016: São Paulo Medical Journal, Revista Paulista de Medicina
https://www.readbyqxmd.com/read/27899401/neonatal-and-childhood-neurodevelopmental-health-and-educational-outcomes-of-children-exposed-to-antidepressants-and-maternal-depression-during-pregnancy-protocol-for-a-retrospective-population-based-cohort-study-using-linked-administrative-data
#12
Deepa Singal, Marni Brownell, Dan Chateau, Chelsea Ruth, Laurence Y Katz
INTRODUCTION: Antidepressants are commonly prescribed during pregnancy; however, there are inconsistent data on the safety of these medications during the prenatal period. To address this gap, this study will investigate short-term and long-term neurodevelopmental, physical and mental health, and educational outcomes of children who have been exposed to selective serotonin reuptake inhibitors (SSRIs) or selective serotonin norepinephrine reuptake inhibitors (SNRIs) and/or maternal depression during pregnancy...
November 29, 2016: BMJ Open
https://www.readbyqxmd.com/read/27898075/maternal-high-fat-diet-prevents-developmental-programming-by-early-life-stress
#13
M Rincel, A L Lépinay, P Delage, J Fioramonti, V S Théodorou, S Layé, M Darnaudéry
Anxiety disorders and depression are well-documented in subjects exposed to adverse childhood events. Recently, maternal obesity and/or maternal consumption of high-fat diets (HFD) have been also proposed as risk factors for offspring mental health. Here using an animal model in rats, we explored the combinatorial effects of a maternal HFD (40% of energy from fat without impact on maternal weight; during gestation and lactation) and maternal separation (MS) in offspring. In the prefrontal cortex (PFC) of pups, MS led to changes in the expression of several genes such as Bdnf (brain derived neurotrophic factor), 5HT-r1a (serotonin receptor 1a) and Rest4 (neuron-restrictive silencer element, repressor element 1, silencing transcription factor (Rest), splicing variant 4)...
November 29, 2016: Translational Psychiatry
https://www.readbyqxmd.com/read/27895323/elevated-cyp2c19-expression-is-associated-with-depressive-symptoms-and-hippocampal-homeostasis-impairment
#14
M M Jukić, N Opel, J Ström, T Carrillo-Roa, S Miksys, M Novalen, A Renblom, S C Sim, E M Peñas-Lledó, P Courtet, A Llerena, B T Baune, D J de Quervain, A Papassotiropoulos, R F Tyndale, E B Binder, U Dannlowski, M Ingelman-Sundberg
The polymorphic CYP2C19 enzyme metabolizes psychoactive compounds and is expressed in the adult liver and fetal brain. Previously, we demonstrated that the absence of CYP2C19 is associated with lower levels of depressive symptoms in 1472 Swedes. Conversely, transgenic mice carrying the human CYP2C19 gene (2C19TG) have shown an anxious phenotype and decrease in hippocampal volume and adult neurogenesis. The aims of this study were to: (1) examine whether the 2C19TG findings could be translated to humans, (2) evaluate the usefulness of the 2C19TG strain as a tool for preclinical screening of new antidepressants and (3) provide an insight into the molecular underpinnings of the 2C19TG phenotype...
November 29, 2016: Molecular Psychiatry
https://www.readbyqxmd.com/read/27891399/effect-of-citalopram-in-combination-with-omega-3-on-depression-in-post-menopausal-women-a-triple-blind-randomized-controlled-trial
#15
Seyedeh Zahra Masoumi, Farideh Kazemi, Samira Tavakolian, Alireza Rahimi, Khodayar Oshvandi, Alireza Soltanian, Fatemeh Shobeiri
INTRODUCTION: Depressive disorder is a common and disabling disorder that causes high rates of morbidity and mortality. Citalopram is an antidepressant drug, of the Selective Serotonin Reuptake Inhibitor (SSRI) class that has been used for geriatric depression since a long time ago. Prescription of omega-3 in geriatric depression has been increased recently; because of more favorable profile of their side effects. Some of the studies reported that omega-3 is effective in prevention or treatment of depressive disorders than Citalopram...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27891342/immunohistochemical-evaluation-of-role-of-serotonin-in-pathogenesis-of-psoriasis
#16
Sheren Fouad Younes, Ola Ahmed Bakry
INTRODUCTION: Psoriasis is a common skin disorder characterized by erythaematosquamous papules and plaques. It is known to be associated with stressful and depressive disorders. Serotonin is a neurotransmitter that plays a role in the pathogenesis of inflammatory skin disorders. AIM: To evaluate the role of serotonin in pathogenesis of psoriasis. MATERIALS AND METHODS: Using standard immunohistochemical techniques, 24 biopsies from patients with chronic plaque psoriasis were examined together with 12 biopsies from age and gender-matched healthy subjects as a control group...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27890829/antenatal-exposure-to-antidepressants-is-associated-with-altered-brain-development-in-very-preterm-born-neonates
#17
Samantha K Podrebarac, Emma G Duerden, Vann Chau, Ruth E Grunau, Anne Synnes, Tim F Oberlander, Steven P Miller
BACKGROUND: Antenatal exposure to selective serotonin reuptake inhibitors (SSRI) is associated with an enhanced risk of preterm birth. Very preterm-born neonates (<32-week gestation) antenatally-exposed to SSRIs may show altered brain development. OBJECTIVE: To examine whether antenatal-SSRI exposure was associated with adverse neonatal brain microstructural and metabolic development using diffusion tensor and magnetic resonance spectroscopic imaging. DESIGN/METHODS: Of 177 neonates enrolled, 14 (8%) were antenatally exposed to SSRIs...
November 25, 2016: Neuroscience
https://www.readbyqxmd.com/read/27888722/a-pilot-study-on-predictors-of-brainstem-raphe-abnormality-in-patients-with-major-depressive-disorder
#18
Milutin Kostić, Ana Munjiza, Danilo Pesic, Amir Peljto, Ivana Novakovic, Valerija Dobricic, Dusica Lecic Tosevski, Milija Mijajlovic
BACKGROUND: Hypo/anechogenicity of the brainstem raphe (BR) structures has been suggested as a possible transcranial parenchymal sonography (TCS) marker associated with depression. AIM: The aim of this study was to analyze possible association of the abnormal BR echogenicity in patients with major depression when compared to healthy controls, and to evaluate its clinical and genetic correlates. METHODS: TCS was performed in 53 patients diagnosed as major depressive disorder (MDD) without psychotic symptoms and in 54 healthy matched controls...
November 22, 2016: Journal of Affective Disorders
https://www.readbyqxmd.com/read/27888375/hbk-14-and-hbk-15-with-antidepressant-like-and-or-memory-enhancing-properties-increase-serotonin-levels-in-the-hippocampus-after-chronic-treatment-in-mice
#19
Karolina Pytka, Katarzyna Gawlik, Dorota Pawlica-Gosiewska, Jadwiga Witalis, Anna Waszkielewicz
5-HT1A and 5-HT7 receptor ligands might have antidepressant-like properties and improve cognitive function. We previously reported significant antidepressant- and anxiolytic-like effects of two dual 5-HT1A and 5-HT7 receptor antagonists in various behavioral tests in rodents. As a continuation of our previous experiments, in this study we aimed to investigate whether chronic administration of 1-[(2,6-dimethylphenoxy)ethoxyethyl]-4-(2-methoxyphenyl)piperazine hydrochloride (HBK-14) and 1-[(2-chloro-6-methylphenoxy)ethoxyethyl]-4-(2-methoxyphenyl)piperazine hydrochloride (HBK-15) caused antidepressant-like effects and elevated serotonin levels in the murine hippocampus...
November 25, 2016: Metabolic Brain Disease
https://www.readbyqxmd.com/read/27882176/effect-of-the-interaction-between-atorvastatin-and-selective-serotonin-reuptake-inhibitors-on-the-blood-redox-equilibrium
#20
Mariola Herbet, Monika Gawrońska-Grzywacz, Magdalena Izdebska, Iwona Piątkowska-Chmiel
Cardiovascular disease and depression often occur simultaneously in the same patient. Long-term polypharmacotherapy can lead to drug-induced oxidative stress. Data concerning the effects of concomitant treatment with atorvastatin and selective serotonin reuptake inhibitors (SSRIs) are lacking. The aim of the present study was to examine oxidative stress parameters in the blood of rats after 28 days treatment with atorvastatin combined with fluoxetine or paroxetine. The study was carried out on male Wistar rats weighing 200-250 g...
November 2016: Experimental and Therapeutic Medicine
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