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https://www.readbyqxmd.com/read/29781244/oprm1-influence-on-and-effectiveness-of-an-individualized-treatment-plan-for-prescription-opioid-use-disorder-patients
#1
Javier Muriel, César Margarit, Beatriz Planelles, María J Serralta, Carmen Puga, María-Del-Mar Inda, Esperanza Cutillas, Domingo Morales, José F Horga, Ana M Peiró
Screening for opioid use disorder should be considered in chronic non-cancer pain (CNCP) patients with long-term use of opioids. The aim of our study was to assess the effectiveness of an individualized treatment plan (ITP) for prescription opioid dependence that included screening of pharmacogenetic markers. An observational prospective study was performed using prescription opioid-dependent CNCP outpatients (n = 88). Patients were divided into nonresponders, responders, or high responders according to their response to the ITP...
May 20, 2018: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/29776841/-medical-simulation-as-a-tool-in-the-training-of-perinatal-professionals
#2
B Tosello, J Blanc, C Kelway, V Pellegrin, E Quarello, F Comte, C Zakarian, C D'Ercole
Though technology plays an increasingly important role in modern health systems, human performance remains a major determinant of safety, effectiveness and efficiency of patient care. This is especially true in the delivery room. Thus, the training of professionals must aim not only for the acquisition of theory and practical skills on an individual basis, but also for the learning of teamwork systematically. Training health professionals with simulation enhances their theoretical knowledge and meets formal requirements in literacy, technical skills and communication...
May 15, 2018: Gynecologie, Obstetrique, Fertilite & Senologie
https://www.readbyqxmd.com/read/29762653/recphyloxml-a-format-for-reconciled-gene-trees
#3
Wandrille Duchemin, Guillaume Gence, Anne-Muriel Arigon Chifolleau, Lars Arvestad, Mukul S Bansal, Vincent Berry, Bastien Boussau, François Chevenet, Nicolas Comte, Adrián A Davín, Christophe Dessimoz, David Dylus, Damir Hasic, Diego Mallo, Rémi Planel, David Posada, Celine Scornavacca, Gergely Szöllosi, Louxin Zhang, Éric Tannier, Vincent Daubin
Motivation: A reconciliation is an annotation of the nodes of a gene tree with evolutionary events-for example, speciation, gene duplication, transfer, loss, etc-along with a mapping onto a species tree. Many algorithms and software produce or use reconciliations but often using different reconciliation formats, regarding the type of events considered or whether the species tree is dated or not. This complicates the comparison and communication between different programs. Results: Here, we gather a consortium of software developers in gene tree species tree reconciliation to propose and endorse a format that aims to promote an integrative-albeit flexible-specification of phylogenetic reconciliations...
May 14, 2018: Bioinformatics
https://www.readbyqxmd.com/read/29760667/a-drd2-annk1-comt-interaction-consisting-of-functional-variants-confers-risk-of-post-traumatic-stress-disorder-in-traumatized-chinese
#4
Kunlin Zhang, Li Wang, Chengqi Cao, Gen Li, Ruojiao Fang, Ping Liu, Shu Luo, Xiangyang Zhang, Israel Liberzon
Objective: Post-traumatic stress disorder (PTSD) is a trauma- and stress-related psychiatric syndrome that occurs after exposure to extraordinary stressors. The neurotransmitter dopamine (DA) plays important roles in neurobiological processes like reward and stress, and a link between PTSD and the dopaminergic system has been reported. Thus, the investigation of an association between PTSD and gene-gene interaction (epistasis) within dopaminergic genes could uncover the genetic basis of dopamine-related PTSD symptomatology and contribute to precision medicine...
2018: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/29730044/association-between-catechol-o-methyltransferase-genetic-variation-and-functional-connectivity-in-patients-with-first-episode-schizophrenia
#5
Hongyan Wang, Bin Zhang, Botao Zeng, Yingying Tang, Tianhong Zhang, Shanshan Zhao, Chunbo Li, Jijun Wang, Donald C Goff
Dopamine in the prefrontal cortex (PFC) plays an important role in cognitive performance and regulates by catechol-O-methyltransferase (COMT) expression. To clarify the effect of COMT genotype on cognitive function in patients with schizophrenia, we performed DNA genotyping, cognitive evaluations, and functional magnetic resonance imaging (fMRI) in antipsychotic-naïve patients with first-episode schizophrenia (FES) and matched healthy control subjects. We found that all cognitive domains were impaired in patients with FES compared with healthy subjects...
May 3, 2018: Schizophrenia Research
https://www.readbyqxmd.com/read/29723560/associations-between-catecholaminergic-and-serotonergic-genes-and-persistent-breast-pain-phenotypes-following-breast-cancer-surgery
#6
Mitchell R Knisely, Yvette P Conley, Kord M Kober, Betty Smoot, Steven M Paul, Jon D Levine, Christine Miaskowski
Genetic variations in the catecholaminergic and serotonergic pathways may contribute to the development and severity of persistent breast pain. However, investigations of these associations are limited. The purpose of this study was to evaluate for associations between breast pain phenotypes and single nucleotide polymorphisms (SNPs) among 15 genes involved in catecholaminergic and serotonergic neurotransmission. Women rated the presence and intensity of breast pain monthly for six months following breast cancer surgery...
April 30, 2018: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/29723539/differential-effect-of-comt-gene-methylation-on-the-prefrontal-connectivity-in-subjects-with-depression-versus-healthy-subjects
#7
Kyoung-Sae Na, Eunsoo Won, June Kang, Aram Kim, Sunyoung Choi, Woo-Suk Tae, Yong-Ku Kim, Min-Soo Lee, Sook-Haeng Joe, Byung-Joo Ham
Expression of the catechol-O-methyl transferase (COMT) gene mainly determines prefrontal dopaminergic availability. Deficient prefrontal dopaminergic activity leads to loss of interest, energy, and motivation, which are core symptoms of depression. Given the role of stress-environmental interactions in major depressive disorder (MDD), we investigated the impact of COMT gene methylation status on prefrontal connectivity. We measured COMT gene methylation and polymorphisms (Val158Met) at the rs4468 locus in peripheral blood samples of healthy controls (n = 90) and patients with MDD (n = 90)...
April 30, 2018: Neuropharmacology
https://www.readbyqxmd.com/read/29709425/a-study-of-inter-individual-variability-in-the-phase-ii-metabolism-of-xenobiotics-in-human-skin
#8
Sandrine Spriggs, Richard Cubberley, Paul Loadman, David Sheffield, Antonia Wierzbicki
Understanding skin metabolism is key to improve in vitro to in vivo extrapolations used to inform risk assessments of topically applied products. However, published literature is scarce and usually covers a limited and non-representative number of donors. We developed a protocol to handle and store ex vivo skin samples post-surgery and prepare skin S9 fractions to measure the metabolic activity of Phase II enzymes. Preincubation of an excess of cofactors at 37 °C for fifteen minutes in the S9 before introduction of the testing probe, greatly increased the stability of the enzymes...
April 27, 2018: Toxicology Letters
https://www.readbyqxmd.com/read/29707715/effects-of-bovine-lactoferrin-on-l-dopa-absorption-and-metabolism-in-mice
#9
Masayuki Ikeda, Hiroshi Iijima, Ichizo Shinoda, Hiroshi Iwamoto, Yasuhiro Takeda
Bioactive natural products, habitually ingested with milk or its derivative nutrients, have been studied for their bioavailability. In this study, we investigated the effects of the co-administration of bovine milk-derived lactoferrin (bLF) and bioactive products, with a focus on catechol-O-methyltransferase (COMT), an enzyme in the catechol metabolism. bLF showed inhibitory activity on COMT in vitro, and acidic pretreatment of bLF enhanced its inhibitory activity. Moreover, partially digested products of bLF by pepsin retained inhibitory activity...
April 30, 2018: Food & Function
https://www.readbyqxmd.com/read/29703646/striatal-dopamine-release-and-impaired-reinforcement-learning-in-adults-with-22q11-2-deletion-syndrome
#10
Esther D A van Duin, Zuzana Kasanova, Dennis Hernaus, Jenny Ceccarini, Alexander Heinzel, Felix Mottaghy, Siamak Mohammadkhani-Shali, Oliver Winz, Michael Frank, Merrit C H Beck, Jan Booij, Inez Myin-Germeys, Thérèse van Amelsvoort
22q11.2 deletion syndrome (22q11DS) is a genetic disorder caused by a microdeletion on chromosome 22q11.2 and associated with an increased risk for developing psychosis. The catechol-O-methyltransferase (COMT) gene is located in the deleted region and involved in dopamine (DA) breakdown. Impaired reinforcement learning (RL) is a recurrent feature in psychosis and thought to be related to abnormal striatal DA function. This study aims to examine RL and the potential association with striatal DA-ergic neuromodulation in 22q11DS...
April 24, 2018: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29697034/nitrocatechol-derivatives-of-chalcone-as-inhibitors-of-monoamine-oxidase-and-catechol-o-methyltransferase
#11
Idalet Engelbrecht, Jacobus P Petzer, Anel Petzer
The efficacy of L-dopa in the treatment of Parkinson's disease depends on its metabolic conversion to dopamine in the brain, however extensive peripheral metabolism of L-dopa diminishes its availability for uptake into the brain. L-Dopa is extensively decarboxylated in the gastrointestinal tract and peripheral tissues by aromatic L-amino acid decarboxylase (AADC), and AADC inhibitors are thus frequently combined with L-dopa therapy. When AADC is inhibited, 3-O-methylation catalysed by catechol-O-methyltransferase (COMT) becomes a dominant metabolic pathway for L-dopa, and COMT inhibitors may thus also be used as adjuncts to L-dopa in Parkinson's disease...
April 26, 2018: Central Nervous System Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/29696585/improved-bioavailability-of-levodopa-using-floatable-spray-coated-microcapsules-for-the-management-of-parkinson-s-disease
#12
Jong-Suep Baek, Jie Kai Tee, Yi Yun Pang, Ern Yu Tan, Kah Leong Lim, Han Kiat Ho, Say Chye Joachim Loo
Oral administration of levodopa (LD) is the gold standard in managing Parkinson's disease (PD). Although LD is the most effective drug in treating PD, chronic administration of LD induces levodopa-induced dyskinesia. A continuous and sustained provision of LD to the brain could, therefore, reduce peak-dose dyskinesia. In commercial oral formulations, LD is co-administrated with an AADC inhibitor (carbidopa) and a COMT inhibitor (entacapone) to enhance its bioavailability. Nevertheless, patients are known to take up to five tablets a day because of poor sustained-releasing capabilities that lead to fluctuations in plasma concentrations...
April 25, 2018: Neuromolecular Medicine
https://www.readbyqxmd.com/read/29695751/a-wheat-caffeic-acid-3-o-methyltransferase-tacomt-3d-positively-contributes-to-both-resistance-to-sharp-eyespot-disease-and-stem-mechanical-strength
#13
Minxia Wang, Xiuliang Zhu, Ke Wang, Chungui Lu, Meiying Luo, Tianlei Shan, Zengyan Zhang
Plant caffeic acid 3-O-methyltransferase (COMT) has been implicated in the lignin biosynthetic pathway through catalyzing the multi-step methylation reactions of hydroxylated monomeric lignin precursors. However, genetic evidence for its function in plant disease resistance is poor. Sharp eyespot, caused primarily by the necrotrophic fungus Rhizoctonia cerealis, is a destructive disease in hexaploid wheat (Triticum aestivum L.). In this study, a wheat COMT gene TaCOMT-3D, is identified to be in response to R...
April 25, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29692704/left-parietal-functional-connectivity-mediates-the-association-between-comt-rs4633-and-verbal-intelligence-in-healthy-adults
#14
Qiang Xu, Jilian Fu, Feng Liu, Wen Qin, Bing Liu, Tianzi Jiang, Chunshui Yu
In Chinese Han population, Catechol-O-methyltransferase gene ( COMT) rs4633 is found to be associated with impaired cognitive process. We aimed to investigate the association between COMT rs4633 and verbal intelligence and the underlying neural mechanisms in Chinese Han healthy young adults. In 256 Chinese Han healthy young adults, we explored the modulatory effects of COMT rs4633 on verbal intelligence quotient (VIQ) and functional connectivity density (FCD) of the brain and the mediation effect of FCD on the association between COMT and VIQ...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29689291/dynamic-gene-amplification-and-function-diversification-of-grass-specific-o-methyltransferase-gene-family
#15
Zhen Liu, Miao Fan, Chao Li, Jian-Hong Xu
The plant O-methyltransferases are dependent on S-Adenosyl-l-methionine, which can catalyze a variety of secondary metabolites. Here we identified different number of OMT genes from the respective grass genomes. Phylogenetic analysis showed that this OMT gene family is a grass-specific gene family that is different from COMT. Most of genes were expanded by tandem and segment duplication after the species split from their progenitor. Furthermore, genes from Group I and two clusters from group II are only present in Panicoideae, which included Bx10 and Bx7 involved in the benzoxazinoids pathway, suggesting these genes could participate in insect resistance in Panicoideae...
April 21, 2018: Genomics
https://www.readbyqxmd.com/read/29688484/effect-of-the-catechol-o-methyltransferase-inhibitors-tolcapone-and-entacapone-on-fatty-acid-metabolism-in-heparg-cells
#16
David Grünig, Andrea Felser, Urs Duthaler, Jamal Bouitbir, Stephan Krähenbühl
Tolcapone and entacapone are catechol-O-methyltransferase (COMT) inhibitors used in patients with Parkinson's disease. For tolcapone, patients with liver failure have been reported with microvesicular steatosis observed in the liver biopsy of one patient. We therefore investigated the impact of tolcapone and entacapone on fatty acid metabolism in HepaRG cells exposed for 24 hours and on acutely exposed mouse liver mitochondria. In HepaRG cells, tolcapone induced lipid accumulation starting at 100µM, whereas entacapone was ineffective up to 200µM...
April 23, 2018: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29685381/an-onco-geriatric-approach-to-select-older-patients-for-optimal-treatments-of-pancreatic-adenocarcinoma
#17
Elisabeth Castel-Kremer, Solene De Talhouet, Anne-Laure Charlois, Emmanuelle Graillot, Xavier Chopin-Laly, Mustapha Adham, Brigitte Comte, Catherine Lombard-Bohas, Thomas Walter, Gilles Boschetti
INTRODUCTION: Pancreatic adenocarcinoma affects mainly older patients. Surgery is indicated for localized tumors while chemotherapy alone is proposed in advanced or metastatic tumors. OBJECTIVE: To evaluate the feasibility of standard of care oncologic treatments in this population, the accuracy of the geriatric evaluation to predict the ability of patients to tolerate the recommended treatments and to identify specific geriatric prognosis factors. METHODS: We included, between 2007 and 2014, all consecutive patients over 70 years of age with a pathologically diagnosed pancreatic cancer...
April 20, 2018: Journal of Geriatric Oncology
https://www.readbyqxmd.com/read/29684863/psychological-and-genetic-risk-factors-associated-with-suicidal-behavior-in-korean-patients-with-mood-disorders
#18
Hee-Yeon Choi, Ga Eun Kim, Kyoung Ae Kong, Yu Jin Lee, Weon-Jeong Lim, So-Hyun Park, Su Hee Ha, Soo In Kim
INTRODUCTION: To prevent suicide, a nationwide important issue in Korea, understanding its etiology is essential. This study aimed to delineate the risk factors for suicidal behavior in mood disorder patients in Korea. METHODS: 216 patients with mood disorders were recruited. We measured suicidal ideation (SI) and suicide attempt (SA) history and the association of six gene polymorphisms with SB: COMT (rs4680), HTR1A (rs6295), TPH1 (rs1800532), BDNF (rs6265), SLC1A3 (rs2269272), and SLC1A2 (rs4755404)...
April 10, 2018: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29680514/brain-blood-cerebrospinal-fluid-and-serum-biomarkers-in-schizophrenia
#19
REVIEW
Alireza Mohammadi, Ehsan Rashidi, Vahid Ghasem Amooeian
Over the last decade, finding a reliable biomarker for the early detection of schizophrenia (Scz) has been a topic of interest. The main goal of the current review is to provide a comprehensive view of the brain, blood, cerebrospinal fluid (CSF), and serum biomarkers of Scz disease. Imaging studies have demonstrated that the volumes of the corpus callosum, thalamus, hippocampal formation, subiculum, parahippocampal gyrus, superior temporal gyrus, prefrontal and orbitofrontal cortices, and amygdala-hippocampal complex were reduced in patients diagnosed with Scz...
April 13, 2018: Psychiatry Research
https://www.readbyqxmd.com/read/29677196/catechol-o-methyltransferase-moderates-effect-of-stress-mindset-on-affect-and-cognition
#20
Alia J Crum, Modupe Akinola, Bradley P Turnwald, Ted J Kaptchuk, Kathryn T Hall
There is evidence that altering stress mindset-the belief that stress is enhancing vs. debilitating-can change cognitive, affective and physiological responses to stress. However individual differences in responsiveness to stress mindset manipulations have not been explored. Given the previously established role of catecholamines in both placebo effects and stress, we hypothesized that genetic variation in catechol-O-methyltransferase (COMT), an enzyme that metabolizes catecholamines, would moderate responses to an intervention intended to alter participants' mindsets about stress...
2018: PloS One
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