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https://www.readbyqxmd.com/read/28212884/desipramine-decreases-expression-of-human-and-murine-indoleamine-2-3-dioxygenases
#1
Alexandra K Brooks, Tiffany M Janda, Marcus A Lawson, Jennifer L Rytych, Robin A Smith, Cecilia Ocampo-Solis, Robert H McCusker
Abundant evidence connects depression symptomology with immune system activation, stress and subsequently elevated levels of kynurenine. Anti-depressants, such as the tricyclic norepinephrine/serotonin reuptake inhibitor desipramine (Desip), were developed under the premise that increasing extracellular neurotransmitter level was the sole mechanism by which they alleviate depressive symptomologies. However, evidence suggests that anti-depressants have additional actions that contribute to their therapeutic potential...
February 14, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28208023/transcriptomic-profiling-of-human-hippocampal-progenitor-cells-treated-with-antidepressants-and-its-application-in-drug-repositioning
#2
Timothy R Powell, Tytus Murphy, Sang H Lee, Jack Price, Sandrine Thuret, Gerome Breen
Current pharmacological treatments for major depressive disorder (MDD) are ineffective in a significant proportion of patients, and the identification of new antidepressant compounds has been difficult. 'Connectivity mapping' is a method that can be used to identify drugs that elicit similar downstream effects on mRNA levels when compared to current treatments, and thus may point towards possible repositioning opportunities. We investigated genome-wide transcriptomic changes to human hippocampal progenitor cells treated with therapeutically relevant concentrations of a tricyclic antidepressant (nortriptyline) and a selective serotonin reuptake inhibitor (escitalopram)...
January 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28203201/modulation-of-synaptic-plasticity-in-the-cortex-needs-to-understand-all-the-players
#3
REVIEW
Claire N J Meunier, Pascal Chameau, Philippe M Fossier
The prefrontal cortex (PFC) is involved in cognitive tasks such as working memory, decision making, risk assessment and regulation of attention. These functions performed by the PFC are supposed to rely on rhythmic electrical activity generated by neuronal network oscillations determined by a precise balance between excitation and inhibition balance (E/I balance) resulting from the coordinated activities of recurrent excitation and feedback and feedforward inhibition. Functional alterations in PFC functions have been associated with cognitive deficits in several pathologies such as major depression, anxiety and schizophrenia...
2017: Frontiers in Synaptic Neuroscience
https://www.readbyqxmd.com/read/28198797/erratum-risk-of-prenatal-depression-and-stress-treatment-alteration-on-serotonin-system-of-offspring-through-exposure-to-fluoxetine
#4
Siran Pei, Li Liu, Zhaomin Zhong, Han Wang, Shuo Lin, Jing Shang
No abstract text is available yet for this article.
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28198207/neurophysiological-symptoms-and-aspartame-what-is-the-connection
#5
Arbind Kumar Choudhary, Yeong Yeh Lee
Aspartame (α-aspartyl-l-phenylalanine-o-methyl ester), an artificial sweetener, has been linked to behavioral and cognitive problems. Possible neurophysiological symptoms include learning problems, headache, seizure, migraines, irritable moods, anxiety, depression, and insomnia. The consumption of aspartame, unlike dietary protein, can elevate the levels of phenylalanine and aspartic acid in the brain. These compounds can inhibit the synthesis and release of neurotransmitters, dopamine, norepinephrine, and serotonin, which are known regulators of neurophysiological activity...
February 15, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28197332/escitalopram-induced-amenorrhea-and-false-positive-urine-pregnancy-test
#6
Vithyalakshmi Selvaraj, Siv Hour, Palanikumar Gunasekar, Caron Gray, James F Smith
Escitalopram is a selective serotonin reuptake inhibitor antidepressant approved by the Food and Drug Administration for the treatment of major depressive disorder and generalized anxiety disorder. A 34-year-old female patient with major depressive disorder developed amenorrhea and had a false-positive urine pregnancy test after initiation of escitalopram treatment. To our knowledge, no published case report of amenorrhea and false-positive urine pregnancy tests in women taking escitalopram exists. This case report suggests that women of child-bearing age should be carefully monitored for amenorrhea while they are on an antidepressant treatment regimen...
January 2017: Korean Journal of Family Medicine
https://www.readbyqxmd.com/read/28196617/the-neuropeptides-galanin-and-galanin-1-15-in-depression-like-behaviours
#7
REVIEW
Carmelo Millón, Antonio Flores-Burgess, Manuel Narváez, Dasiel O Borroto-Escuela, Belén Gago, Luis Santín, Estela Castilla-Ortega, José Ángel Narváez, Kjell Fuxe, Zaida Díaz-Cabiale
Galanin is a 29 amino acid neuropeptide widely distributed in neurons within the central nervous system. Galanin exerts its biological activities through three different G protein-receptors and participates in a number of functions, including mood regulation. Not only Galanin but also Galanin N-terminal fragments like Galanin(1-15) are active at the central level. In this work, we review the latest findings in studies on Galanin and Galanin(1-15) in depression-related behaviours. Our focus is on animal models for depression, and we pay some attention to research data obtained in human studies...
January 31, 2017: Neuropeptides
https://www.readbyqxmd.com/read/28195567/bdnf-val66met-association-with-serotonin-transporter-binding-in-healthy-humans
#8
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/28194935/a-potential-pet-radiotracer-for-the-5-ht2c-receptor-synthesis-and-in-vivo-evaluation-of-4-3-18-f-fluorophenethoxy-pyrimidine
#9
Juhyeon Kim, Byung Seok Moon, Byung Chul Lee, Ho-Young Lee, Hak Joong Kim, Hyunah Choo, Ae Nim Pae, Yong Seo Cho, Sun-Joon Min
The serotonin 2C receptor subtype (5-HT2C) is an excitatory 5-HT receptor widely distributed throughout the central nerve system. As the 5-HT2C receptor displays multiple actions on various neurotransmitter systems including glutamate, dopamine, epinephrine and -aminobutyric acid (GABA), abnormalities of the 5-HT2C receptor are associated with psychiatric diseases such as depression, schizophrenia, drug abuse, and anxiety. Up to date, three kinds of 5-HT2C PET radiotracers such as [11C]N-methylated arylazepine (1), [11C]WAY-163909 (2), [18F]fluorophenylcyclopropane (3) have been developed, but they may not be suitable for in vivo 5-HT2C imaging study due to their modest specific binding...
February 14, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28188763/hiv-antiretroviral-drug-efavirenz-induces-anxiety-like-and-depression-like-behavior-in-rats-evaluation-of-neurotransmitter-alterations-in-the-striatum
#10
Giuliana Ignácio Teixeira Cavalcante, Adriano José Maia Chaves Filho, Maria Isabel Linhares, Camila Nayane de Carvalho Lima, Edith Teles Venâncio, Emiliano Ricardo Vasconcelos Rios, Francisca Cléa Florenço de Souza, Silvânia Maria Mendes Vasconcelos, Danielle Macêdo, Marta Maria de França Fonteles
Efavirenz (EFV) is an effective antiretroviral drug with a favorable pharmacokinetic profile and widely used in combination regimens to treat HIV infection. However, there are major concerns about the safety of this drug. Patients treated with EFV often experience neuropsychiatric adverse effects, which frequently lead to switching to alternative EFV-free regimens. The mechanisms involved in the central action of EFV are intrinsically unclear. Thus, this study aimed to investigate the effects of acute and subchronic (2 weeks) EFV administration in a series of behavioral tests for anxiety-like and depression-like behavior in healthy rats...
February 7, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28185898/sirt2-inhibition-modulate-glutamate-and-serotonin-systems-in-the-prefrontal-cortex-and-induces-antidepressant-like-action
#11
Mercedes Erburu, Irene Muñoz-Cobo, Teresa Díaz-Perdigon, Paolo Mellini, Takayoshi Suzuki, Elena Puerta, Rosa M Tordera
Growing evidence suggests that changes in histone acetylation in specific sites of the chromatin modulate neuronal plasticity and contribute to antidepressant-like action. Sirtuin 2 (SIRT2) is a class III NAD(+)-dependent histone deacetylase involved in transcriptional repression of genes regulating synaptic plasticity. Importantly, a key role for the glutamate system in prefrontal cortex (PFC) synaptic plasticity changes induced by antidepressants has been suggested. Here, we asked whether SIRT2 could be a pharmacological target for depression therapy...
February 6, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28185878/chronic-mild-stress-augments-mptp-induced-neurotoxicity-in-a-murine-model-of-parkinson-s-disease
#12
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/28182676/the-swimming-test-is-effective-for-evaluating-spasticity-after-contusive-spinal-cord-injury
#13
Youngjae Ryu, Toru Ogata, Motoshi Nagao, Taku Kitamura, Kazuhito Morioka, Yoshinori Ichihara, Toru Doi, Yasuhiro Sawada, Masami Akai, Ryohei Nishimura, Naoki Fujita
Spasticity is a frequent chronic complication in individuals with spinal cord injury (SCI). However, the severity of spasticity varies in patients with SCI. Therefore, an evaluation method is needed to determine the severity of spasticity. We used a contusive SCI model that is suitable for clinical translation. In this study, we examined the feasibility of the swimming test and an EMG for evaluating spasticity in a contusive SCI rat model. Sprague-Dawley rats received an injury at the 8th thoracic vertebra...
2017: PloS One
https://www.readbyqxmd.com/read/28179152/the-six-most-widely-used-selective-serotonin-reuptake-inhibitors-decrease-androgens-and-increase-estrogens-in-the-h295r-cell-line
#14
Cecilie Hurup Hansen, Lizette Weber Larsen, Amalie Møller Sørensen, Bent Halling-Sørensen, Bjarne Styrishave
Selective serotonin reuptake inhibitors (SSRIs) used as first line of treatment in major depressive disorder (MDD) are known to exert negative effects on the endocrine system and fertility. The aim of the present study was to investigate the possible endocrine disrupting effect of six SSRIs, fluoxetine, paroxetine, citalopram and its active enantiomer escitalopram, sertraline and fluvoxamine using the OECD standardized and validated human in vitro adrenocortical H295R cell assay. All the major steroids, including progestagens, corticoids, androgens and estrogens were analysed using a fully validated LC-MS/MS method...
February 5, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28178949/selective-serotonin-reuptake-inhibitors-versus-placebo-in-patients-with-major-depressive-disorder-a-systematic-review-with-meta-analysis-and-trial-sequential-analysis
#15
Janus Christian Jakobsen, Kiran Kumar Katakam, Anne Schou, Signe Gade Hellmuth, Sandra Elkjær Stallknecht, Katja Leth-Møller, Maria Iversen, Marianne Bjørnø Banke, Iggiannguaq Juhl Petersen, Sarah Louise Klingenberg, Jesper Krogh, Sebastian Elgaard Ebert, Anne Timm, Jane Lindschou, Christian Gluud
BACKGROUND: The evidence on selective serotonin reuptake inhibitors (SSRIs) for major depressive disorder is unclear. METHODS: Our objective was to conduct a systematic review assessing the effects of SSRIs versus placebo, 'active' placebo, or no intervention in adult participants with major depressive disorder. We searched for eligible randomised clinical trials in The Cochrane Library's CENTRAL, PubMed, EMBASE, PsycLIT, PsycINFO, Science Citation Index Expanded, clinical trial registers of Europe and USA, websites of pharmaceutical companies, the U...
February 8, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28178592/sertraline-and-venlafaxine-improves-motor-performance-and-neurobehavioral-deficit-in-quinolinic-acid-induced-huntington-s-like-symptoms-in-rats-possible-neurotransmitters-modulation
#16
Jaskamal Singh Gill, Sumit Jamwal, Puneet Kumar, Rahul Deshmukh
BACKGROUND: Huntington Disease is autosomal, fatal and progressive neurodegenerative disorder for which clinically available drugs offer only symptomatic relief. Emerging strides have indicated that antidepressants improve motor performance, restore neurotransmitters level, ameliorates striatal atrophy, increases BDNF level and may enhance neurogenesis. Therefore, we investigated sertraline and venlafaxine, clinically available drugs for depression with numerous neuroprotective properties, for their beneficial effects, if any, in quinolinic acid induced Huntington's like symptoms in rats...
November 18, 2016: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28177953/double-blind-switch-study-of-vilazodone-in-the-treatment-of-major-depressive-disorder
#17
Jon E Grant, Sarah A Redden, Eric W Leppink
Approximately 40% of patients treated for depression do not respond to a trial of an antidepressant. The aim of the proposed study was to evaluate the efficacy and safety of switching to vilazodone in patients with major depressive disorder who are unresponsive or only partially responsive to a trial of citalopram. Seventy-nine adults with major depressive disorder were enrolled in an open-label study of citalopram (20 mg/day) for 6 weeks. Those still symptomatic after 6-weeks of citalopram were randomly assigned to either a higher dose of citalopram (40 mg/day) or to vilazodone in a double-blind trial for 6 weeks...
February 7, 2017: International Clinical Psychopharmacology
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
#18
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/28167224/hypercholesterolemia-causes-psychomotor-abnormalities-in-mice-and-alterations-in-cortico-striatal-biogenic-amine-neurotransmitters-relevance-to-parkinson-s-disease
#19
Rajib Paul, Amarendranath Choudhury, Dulal Chandra Boruah, Rajlakshmi Devi, Pallab Bhattacharya, Manabendra Dutta Choudhury, Anupom Borah
The symptoms of Parkinson's disease (PD) include motor behavioral abnormalities, which appear as a result of the extensive loss of the striatal biogenic amine, dopamine. Various endogenous molecules, including cholesterol, have been put forward as putative contributors in the pathogenesis of PD. Earlier reports have provided a strong link between the elevated level of plasma cholesterol (hypercholesterolemia) and onset of PD. However, the role of hypercholesterolemia on brain functions in terms of neurotransmitter metabolism and associated behavioral manifestations remain elusive...
February 3, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28160035/brexpiprazole-reduces-hyperactivity-impulsivity-and-risk-preference-behavior-in-mice-with-dopamine-transporter-knockdown-a-model-of-mania
#20
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
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