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https://www.readbyqxmd.com/read/27889704/pharmacogenetic-studies-a-tool-to-improve-antidepressant-therapy
#1
Marta Ramos, Cecilia Berrogain, Julia Concha, Laura Lomba, Cristina Belén García, Mª Pilar Ribate
The World Health Organization (WHO) predicts that major depressive disorder (MDD) will be the second leading cause of death and disability by 2020. Nowadays, approximately 60-70% of patients with this disorder have shown the lack of effectiveness and tolerability of the therapy with antidepressants. The US Food and Drug Administration (FDA) and the European Medicine Agency (EMA) are including pharmacogenetic information in the labeling of several antidepressants. The presence of this information represents the relevance of genetic polymorphisms in drug response...
December 1, 2016: Drug Metabolism and Personalized Therapy
https://www.readbyqxmd.com/read/27826798/contribution-of-pharmacogenetic-testing-to-modeled-medication-change-recommendations-in-a-long-term-care-population-with-polypharmacy
#2
Elaine A Sugarman, Ali Cullors, Joel Centeno, David Taylor
BACKGROUND: Among long-term care facility residents, polypharmacy is common, and often appropriate, given the need to treat multiple, complex, chronic conditions. Polypharmacy has, however, been associated with increased healthcare costs, adverse drug events, and drug interactions. The current study evaluates the potential medication cost savings of adding personalized pharmacogenetic information to traditional medication management strategies. METHODS: One hundred and twelve long-term care residents completed pharmacogenetic testing for targeted variants in the following genes: CYP1A2, CYP2C9, CYP2C19, CYP2D6, CYP3A4/CYP3A5, HTR2A, HTR2C, SLC6A4, SLC6A2 COMT, OPRM1, SLCO1B1, VKORC1 and MTHFR...
November 8, 2016: Drugs & Aging
https://www.readbyqxmd.com/read/27809765/impact-of-neonatal-iron-deficiency-on-hippocampal-dna-methylation-and-gene-transcription-in-a-porcine-biomedical-model-of-cognitive-development
#3
Kyle M Schachtschneider, Yingkai Liu, Laurie A Rund, Ole Madsen, Rodney W Johnson, Martien A M Groenen, Lawrence B Schook
BACKGROUND: Iron deficiency is a common childhood micronutrient deficiency that results in altered hippocampal function and cognitive disorders. However, little is known about the mechanisms through which neonatal iron deficiency results in long lasting alterations in hippocampal gene expression and function. DNA methylation is an epigenetic mark involved in gene regulation and altered by environmental factors. In this study, hippocampal DNA methylation and gene expression were assessed via reduced representation bisulfite sequencing and RNA-seq on samples from a previous study reporting reduced hippocampal-based learning and memory in a porcine biomedical model of neonatal iron deficiency...
November 3, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27670765/new-polymorphisms-associated-with-response-to-anti-tnf-drugs-in-patients-with-moderate-to-severe-plaque-psoriasis
#4
R Prieto-Pérez, G Solano-López, T Cabaleiro, M Román, D Ochoa, M Talegón, O Baniandrés, J L López-Estebaranz, P de la Cueva, E Daudén, F Abad-Santos
Anti-tumor necrosis factor (anti-TNF) drugs are effective against psoriasis, although 20-30% of patients are nonresponders. Few pharmacogenomic studies have been performed to predict the response to anti-TNF drugs in psoriasis. We studied 173 polymorphisms to establish an association with the response to anti-TNF drugs in patients with moderate-to-severe plaque psoriasis (N=144). We evaluated the response using PASI75 at 3, 6 and 12 months. The results of the multivariate analysis showed an association between polymorphisms in PGLYR4, ZNF816A, CTNNA2, IL12B, MAP3K1 and HLA-C genes and the response at 3 months...
September 27, 2016: Pharmacogenomics Journal
https://www.readbyqxmd.com/read/27611726/genetic-polymorphisms-in-the-serotonergic-system-are-associated-with-circadian-manifestations-of-bruxism
#5
G H Oporto, T Bornhardt, V Iturriaga, L A Salazar
Bruxism (BRX) is a condition of great interest for researchers and clinicians in dental and medical areas. BRX has two circadian manifestations; it can occur during sleep (sleep bruxism, SB) or during wakefulness (awake bruxism, WB). However, it can be suffered together. Recent investigations suggest that central nervous system neurotransmitters and their genes could be involved in the genesis of BRX. Serotonin is responsible for the circadian rhythm, maintaining arousal, regulating stress response, muscle tone and breathing...
November 2016: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/27606312/clinical-utility-of-combinatorial-pharmacogenomics-guided-antidepressant-therapy-evidence-from-three-clinical-studies
#6
C Anthony Altar, Joseph Carhart, Josiah D Allen, Daniel Hall-Flavin, Joel Winner, Bryan Dechairo
DNA of 258 patients with treatment-resistant depression was collected in three 8-10 week, two-arm, prospective clinical trials. Forty-four allelic variations were measured in genes for the cytochrome P450 (CYP) enzymes CYP2D6, CYPC19, and CYP1A2, the serotonin transporter (SLC6A4), and the 5-HT2A receptor (HTR2A). The combinatorial pharmacogenomic (CPGx™) GeneSight test results were provided to clinicians to support medication changes from baseline (guided arm), or they were provided at the end of each study to clinicians of unguided patients who were treated as usual (TAU)...
October 2015: Molecular Neuropsychiatry
https://www.readbyqxmd.com/read/27603714/consensus-paper-of-the-wfsbp-task-force-on-genetics-genetics-epigenetics-and-gene-expression-markers-of-major-depressive-disorder-and-antidepressant-response
#7
Chiara Fabbri, Ladislav Hosak, Rainald Mössner, Ina Giegling, Laura Mandelli, Frank Bellivier, Stephan Claes, David A Collier, Alejo Corrales, Lynn E Delisi, Carla Gallo, Michael Gill, James L Kennedy, Marion Leboyer, Amanda Lisoway, Wolfgang Maier, Miguel Marquez, Isabelle Massat, Ole Mors, Pierandrea Muglia, Markus M Nöthen, Michael C O'Donovan, Jorge Ospina-Duque, Peter Propping, Yongyong Shi, David St Clair, Florence Thibaut, Sven Cichon, Julien Mendlewicz, Dan Rujescu, Alessandro Serretti
Major depressive disorder (MDD) is a heritable disease with a heavy personal and socio-economic burden. Antidepressants of different classes are prescribed to treat MDD, but reliable and reproducible markers of efficacy are not available for clinical use. Further complicating treatment, the diagnosis of MDD is not guided by objective criteria, resulting in the risk of under- or overtreatment. A number of markers of MDD and antidepressant response have been investigated at the genetic, epigenetic, gene expression and protein levels...
September 7, 2016: World Journal of Biological Psychiatry
https://www.readbyqxmd.com/read/27597145/impact-of-genetic-variation-in-the-5-ht-transporter-and-receptor-on-platelet-function-in-patients-with-stable-cad-taking-aspirin
#8
Amrit Bajrangee, Nicola Ryan, Ciara Vangjeli, Marian Brennan, Dermot Cox, Denis C Shields, Desmond Fitzgerald, Andrew Maree
BACKGROUND: Serotonin (5-HT) induces platelet aggregation by activating its 5-HT2A receptor. Platelet uptake is mediated by the 5-HT transporter (5-HTT). A common 5-HTT promoter (5-HTTLPR) splice variant results in long (L) and short (S) alleles. 5-HTTLPR genotype has been associated with increased platelet activation and risk of MI. Variation within HTR2A gene (C1354T) that encodes the 5-HT2A receptor has also been associated with enhanced platelet aggregation. We hypothesised that 5-HTT and/or HTR2A variation may influence platelet response to aspirin in patients with stable CAD...
October 2016: Thrombosis Research
https://www.readbyqxmd.com/read/27489378/association-of-polymorphisms-within-the-serotonin-receptor-genes-5-htr1a-5-htr1b-5-htr2a-and-5-htr2c-and-migraine-susceptibility-in-a-turkish-population
#9
Yavuz Yücel, Salih Coşkun, Beyhan Cengiz, Hasan H Özdemir, Ertuğrul Uzar, Abdullah Çim, M Akif Camkurt, M Ufuk Aluclu
OBJECTIVE: Migraine, a highly prevelant headache disorder, is regarded as a polygenic multifactorial disease. Serotonin (5-HT) and their respective receptors have been implicated in the patogenesis. METHODS: We investigated the 5-HT1A, 5-HT1B, 5-HT2A, and 5-HT2C receptor gene polymorphisms and their association with migraine in Turkish patients. The rs6295, rs1300060, rs1228814, rs6311, rs6313, rs6314, rs6318, rs3813929 (-759C/T) and rs518147 polymorphisms were analyzed in 135 patients with migraine and 139 healthy subjects, using a BioMark 96...
August 31, 2016: Clinical Psychopharmacology and Neuroscience: the Official Scientific Journal of the Korean College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27485686/neuronal-deletion-of-kmt2a-mll1-histone-methyltransferase-in-ventral-striatum-is-associated-with-defective-spike-timing-dependent-striatal-synaptic-plasticity-altered-response-to-dopaminergic-drugs-and-increased-anxiety
#10
Erica Y Shen, Yan Jiang, Behnam Javidfar, Bibi Kassim, Yong-Hwee E Loh, Qi Ma, Amanda C Mitchell, Venu Pothula, A Francis Stewart, Patricia Ernst, Wei-Dong Yao, Gilles Martin, Li Shen, Mira Jakovcevski, Schahram Akbarian
Lysine (K) methyltransferase 2a (Kmt2a) and other regulators of H3 lysine 4 methylation, a histone modification enriched at promoters and enhancers, are widely expressed throughout the brain, but molecular and cellular phenotypes in subcortical areas remain poorly explored. We report that Kmt2a conditional deletion in postnatal forebrain is associated with excessive nocturnal activity and with absent or blunted responses to stimulant and dopaminergic agonist drugs, in conjunction with near-complete loss of spike-timing-dependent long-term potentiation in medium spiny neurons (MSNs)...
December 2016: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27455355/effect-of-a-human-serotonin-5-ht2a-receptor-gene-polymorphism-on-impulsivity-dependence-on-cholesterol-levels
#11
Katrin Tomson, Mariliis Vaht, Kariina Laas, Toomas Veidebaum, Jaanus Harro
BACKGROUND: Impulsivity is multidimensional: Low impulse control may result in behavioural disorders, but acting on the spur of moment may also be advantageous. Previous studies have shown negative associations between different facets of impulsivity and serotonergic function. Other investigations have found negative correlations between serum lipid levels and impulsivity. METHODS: We have investigated whether the functional polymorphism -1438A/G in the serotonin 5-HT2A receptor gene (HTR2A) is associated with impulsivity levels and whether there is any interaction with serum lipid levels...
July 19, 2016: Journal of Affective Disorders
https://www.readbyqxmd.com/read/27445670/5-ht2a-gene-variants-moderate-the-association-between-ptsd-and-reduced-default-mode-network-connectivity
#12
Mark W Miller, Emily Sperbeck, Meghan E Robinson, Naomi Sadeh, Erika J Wolf, Jasmeet P Hayes, Mark Logue, Steven A Schichman, Angie Stone, William Milberg, Regina McGlinchey
The default mode network (DMN) has been used to study disruptions of functional connectivity in a wide variety of psychiatric and neurological conditions, including posttraumatic stress disorder (PTSD). Studies indicate that the serotonin system exerts a modulatory influence on DMN connectivity; however, no prior study has examined associations between serotonin receptor gene variants and DMN connectivity in either clinical or healthy samples. We examined serotonin receptor single nucleotide polymorphisms (SNPs), PTSD, and their interactions for association with DMN connectivity in 134 White non-Hispanic veterans...
2016: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/27445478/5-htr1a-and-5-htr2a-genetic-polymorphisms-and-ssri-antidepressant-response-in-depressive-chinese-patients
#13
Zai-Quan Dong, Xi-Rong Li, Lin He, Guang He, Tao Yu, Xue-Li Sun
OBJECTIVE: Genetic variabilities within the serotoninergic system may predict response or remission to antidepressant drugs. Several serotonin receptor (5-HTR) gene polymorphisms have been associated with susceptibility to psychiatric diseases. In this study, we analyzed the correlation between 5-HTR1A and 5-HTR2A polymorphisms and response or remission to selective serotonin reuptake inhibitors (SSRIs) drugs. METHODS: Two hundred and ninety patients who met the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition criteria for major depressive disorder were involved in this study...
2016: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/27399274/alcohol-misuse-in-emerging-adulthood-association-of-dopamine-and-serotonin-receptor-genes-with-impulsivity-related-cognition
#14
Talia E Leamy, Jason P Connor, Joanne Voisey, Ross McD Young, Matthew J Gullo
Impulsivity predicts alcohol misuse and risk for alcohol use disorder. Cognition mediates much of this association. Genes also account for a large amount of variance in alcohol misuse, with dopamine and serotonin receptor genes of particular interest, because of their role in motivated behavior. The precise psychological mechanisms through which such genes confer risk is unclear. Trait impulsivity conveys risk for alcohol misuse by influencing two distinct domains of cognition: beliefs about the reinforcing effects of alcohol consumption (positive alcohol expectancy) and the perceived ability to resist it (drinking refusal self-efficacy)...
December 2016: Addictive Behaviors
https://www.readbyqxmd.com/read/27375434/long-term-estrogen-receptor-beta-agonist-treatment-modifies-the-hippocampal-transcriptome-in-middle-aged-ovariectomized-rats
#15
Miklós Sárvári, Imre Kalló, Erik Hrabovszky, Norbert Solymosi, Annie Rodolosse, Zsolt Liposits
Estradiol (E2) robustly activates transcription of a broad array of genes in the hippocampal formation of middle-aged ovariectomized rats via estrogen receptors (ERα, ERβ, and G protein-coupled ER). Selective ERβ agonists also influence hippocampal functions, although their downstream molecular targets and mechanisms are not known. In this study, we explored the effects of long-term treatment with ERβ agonist diarylpropionitrile (DPN, 0.05 mg/kg/day, sc.) on the hippocampal transcriptome in ovariectomized, middle-aged (13 month) rats...
2016: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/27325396/dopamine-d3-receptor-ser9gly-variant-is-associated-with-impulse-control-disorders-in-parkinson-s-disease-patients
#16
Soumya Krishnamoorthy, Roopa Rajan, Moinak Banerjee, Hardeep Kumar, Gangadhara Sarma, Syam Krishnan, Sankara Sarma, Asha Kishore
INTRODUCTION: Impulse control disorders (ICD) are reported to occur at variable frequencies in different ethnic groups. Genetic vulnerability is suspected to underlie the individual risk for ICD. We investigated whether the allelic variants of dopamine (DRD3), glutamate (GRIN2B) and serotonin (HTR2A) receptors are linked to ICD in Indian Parkinson's disease (PD) patients. METHODS: We conducted a prospective, case-control study which included PD patients (70 with ICD, 100 without ICD categorized after direct psychiatric interview of patient and caregiver) and 285 healthy controls...
September 2016: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/27324805/pharmacogenetics-of-citalopram-related-side-effects-in-children-with-depression-and-or-anxiety-disorders
#17
Maya Amitai, Sefi Kronenberg, Miri Carmel, Elena Michaelovsky, Amos Frisch, David Brent, Alan Apter, Alon Chen, Abraham Weizman, Silvana Fennig
Pharmacogenetic approach to antidepressant (AD) response is a promising avenue toward individualizing AD treatment. This is particularly relevant in pediatric populations because of concerns about the suicide risk of serotonin selective reuptake inhibitors (SSRIs), resulting in a black-box warning. However, to date, no specific gene or polymorphism has been consistently implicated as a marker of AD side effect (SE) in the pediatric population. The aim of this study was to examine the association between polymorphisms in genes related to the serotonergic system and citalopram SE's in children and adolescents with major depressive disorder (MDD)/dysthymia and/or anxiety disorders...
June 20, 2016: Journal of Neural Transmission
https://www.readbyqxmd.com/read/27318223/effect-of-5-ht2a-receptor-polymorphisms-and-occupational-stress-on-self-reported-sleep-quality-a-cross-sectional-study-in-xinjiang-china
#18
Yu Jiang, Changyong Cui, Hua Ge, Suzhen Guan, Yulong Lian, Jiwen Liu
OBJECTIVE: Occupational stress and the serotonin receptor (5-HTR) play a key role in the regulation of sleep quality. Previous studies on the relationship between work-related stress, 5-HTR2A polymorphism, and sleep complaints found that 5-HTR2A modulates the response of the hypothalamic-pituitary-adrenal axis to stress and the maintenance of circadian rhythm. However, the effect of 5-HTR2A polymorphism and occupational stress on sleep quality has not been reported. The present study investigated the effects of 5-HTR2A genotypes, occupational stress, and gene-environment interactions on the sleep quality...
April 2016: Sleep Medicine
https://www.readbyqxmd.com/read/27272046/pharmacogenetic-study-of-antipsychotic-induced-acute-extrapyramidal-symptoms-in-a-first-episode-psychosis-cohort-role-of-dopamine-serotonin-and-glutamate-candidate-genes
#19
S Mas, P Gassó, A Lafuente, M Bioque, A Lobo, A Gonzàlez-Pinto, M S Olmeda, I Corripio, A Llerena, B Cabrera, J Saiz-Ruiz, M Bernardo
This study investigated whether the risk of presenting antipsychotic (AP)-induced extrapyramidal symptoms (EPS) could be related to single-nucleotide polymorphisms (SNPs) in a naturalistic cohort of first episode psychosis (FEP) patients. Two hundred and two SNPs in 31 candidate genes (involved in dopamine, serotonin and glutamate pathways) were analyzed in the present study. One hundred and thirteen FEP patients (43 presenting EPS and 70 non-presenting EPS) treated with high-potency AP (amisulpride, paliperidone, risperidone and ziprasidone) were included in the analysis...
October 2016: Pharmacogenomics Journal
https://www.readbyqxmd.com/read/27263299/-expression-of-serotonin-receptor-and-transporter-related-genes-of-cd4-t-lymphocytes-in-patients-with-asthma-and-depression
#20
Ren-zhi Chen, Min Zhu, Wang Ting, Yu-lin Ji
OBJECTIVE: To explore the comorbidity mechanism of asthma and depression. METHODS: A self-developed questionnaire, which also contained Asthma Control Test (ACT), Asthma Quality of Life Questionnaire (AQLQ) and Hamilton Rating Scale for depression ( HRSD), was administered in 41 participants with asthma (AS), asthma and depression (AD), or none any of these conditions (health control, HC). Lung function and blood levels of eosnophils and IgE were also detected in those in the AS and AD groups...
March 2016: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
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