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https://www.readbyqxmd.com/read/27914298/effects-of-environmental-noise-exposure-on-dna-methylation-in-the-brain-and-metabolic-health
#1
Liqiong Guo, Peng-Hui Li, Hua Li, Elena Colicino, Silvia Colicino, Yi Wen, Ruiping Zhang, Xiaotian Feng, Timothy M Barrow, Akin Cayir, Andrea A Baccarelli, Hyang-Min Byun
Environmental noise exposure is associated with adverse effects on human health including hearing loss, heart disease, and changes in stress-related hormone levels. Alteration in DNA methylation in response to environmental exposures is a well-known phenomenon and it is implicated in many human diseases. Understanding how environmental noise exposures affect DNA methylation patterns may help to elucidate the link between noise and adverse effects on health. In this pilot study we examined the effects of environmental noise exposure on DNA methylation of genes related to brain function and investigated whether these changes are related with metabolic health...
November 30, 2016: Environmental Research
https://www.readbyqxmd.com/read/27909828/the-dopamine-related-polymorphisms-bdnf-comt-drd2-drd3-and-drd4-are-not-linked-with-changes-in-csf-dopamine-levels-and-frequency-of-hiv-infection
#2
Anne Horn, C Scheller, S du Plessis, R Burger, G Arendt, J Joska, S Sopper, C M Maschke, M Obermann, I W Husstedt, J Hain, P Riederer, E Koutsilieri
We showed previously that higher levels in CSF dopamine in HIV patients are associated with the presence of the dopamine transporter (DAT) 10/10-repeat allele which was also detected more frequently in HIV-infected individuals compared to uninfected subjects. In the current study, we investigated further whether other genetic dopamine (DA)-related polymorphisms may be related with changes in CSF DA levels and frequency of HIV infection in HIV-infected subjects. Specifically, we studied genetic polymorphisms of brain-derived neurotrophic factor, catechol-O-methyltransferase, and dopamine receptors DRD2, DRD3, and DRD4 genetic polymorphisms in uninfected and HIV-infected people in two different ethnical groups, a German cohort (Caucasian, 72 individuals with HIV infection and 22 individuals without HIV infection) and a South African cohort (Xhosan, 54 individuals with HIV infection and 19 individuals without HIV infection)...
December 1, 2016: Journal of Neural Transmission
https://www.readbyqxmd.com/read/27909454/linkage-and-association-analyses-of-schizophrenia-with-genetic-variations-on-chromosome-22q11-in-koreans
#3
Se Chang Yoon, Yong Lee Jang, Jong-Won Kim, Eun-Young Cho, Dong Yeon Park, Kyung Sue Hong, Yu Sang Lee
OBJECTIVE: Chromosome 22q11 has been implicated as a susceptibility locus of schizophrenia. It also contains various candidate genes for which evidence of association with schizophrenia has been reported. To determine whether genetic variations in chromosome 22q11 are associated with schizophrenia in Koreans, we performed a linkage analysis and case-control association study. METHODS: Three microsatellite markers within a region of 4.35 Mb on 22q11 were genotyped for 47 multiplex schizophrenia families, and a non-parametric linkage analysis was applied...
November 2016: Psychiatry Investigation
https://www.readbyqxmd.com/read/27909011/age-dependent-effects-of-catechol-o-methyltransferase-comt-gene-val158met-polymorphism-on-language-function-in-developing-children
#4
Lisa Sugiura, Tomoko Toyota, Hiroko Matsuba-Kurita, Yoshimi Iwayama, Reiko Mazuka, Takeo Yoshikawa, Hiroko Hagiwara
The genetic basis controlling language development remains elusive. Previous studies of the catechol-O-methyltransferase (COMT) Val(158)Met genotype and cognition have focused on prefrontally guided executive functions involving dopamine. However, COMT may further influence posterior cortical regions implicated in language perception. We investigated whether COMT influences language ability and cortical language processing involving the posterior language regions in 246 children aged 6-10 years. We assessed language ability using a language test and cortical responses recorded during language processing using a word repetition task and functional near-infrared spectroscopy...
November 30, 2016: Cerebral Cortex
https://www.readbyqxmd.com/read/27904710/the-comt-rs165599-gene-polymorphism-contributes-to-chemotherapy-induced-cognitive-impairment-in-breast-cancer-patients
#5
Huaidong Cheng, Wen Li, Chen Gan, Bo Zhang, Qianqian Jia, Kai Wang
The present study aimed to investigate the effect of genetic polymorphisms of catechol-O-methyl transferase (COMT), apolipoprotein E (APOE), and brain derived neurotrophic factor (BDNF) on the modulation of the chemotherapy-induced cognitive impairment (CICI) in breast cancer patients. Eighty triple negative breast cancer (TNBC) and 165 non-triple negative breast cancer (NTNBC) patients were selected, and subjected to a number of neuropsychological tests, including memory questionnaires, before and after chemotherapy...
2016: American Journal of Translational Research
https://www.readbyqxmd.com/read/27903758/oprm1-and-comt-gene-gene-interaction-is-associated-with-postoperative-pain-and-opioid-consumption-after-orthopedic-trauma
#6
Heba Khalil, Susan M Sereika, Feng Dai, Sheila Alexander, Yvette Conley, Gary Gruen, Li Meng, Peter Siska, Ivan Tarkin, Richard Henker
BACKGROUND: mu-opioid receptor (OPRM1) and catechol-O-methyltransferase (COMT) contribute to the neurotransmission pathway of pain. COMT affects mu receptor expression and density in the brain. The aim of this study was to explore the OPRM1 and COMT interaction effects on postoperative pain and opioid consumption. METHODS: This cross-sectional exploratory study used genotype and clinical data from 153 postoperative patients. Using multiple regression analyses, four single-nucleotide polymorphisms of COMT (rs6269, rs4633, rs4818, and rs4680), their haplotypes, and diplotypes were considered for their interactions with A118G of OPRM1 regarding postoperative pain and opioid consumption...
November 30, 2016: Biological Research for Nursing
https://www.readbyqxmd.com/read/27898499/comt-and-bdnf-gene-variants-help-to-predict-alcohol-consumption-in-alcohol-dependent-patients
#7
Anna Klimkiewicz, Anna Mach, Andrzej Jakubczyk, Jakub Klimkiewicz, Anna Wnorowska, Maciej Kopera, Sylwia Fudalej, Margit Burmeister, Kirk Brower, Marcin Wojnar
BACKGROUND: The neurobiology of alcohol dependence (AD) involves alterations in neurotransmitters and the stress response. We hypothesized that an interaction between functional variants of dopaminergic and neurotrophic genes may influence drinking in AD. METHODS: The relationship between alcohol consumption and single-nucleotide polymorphisms, Val66Met in the brain-derived neurotrophic factor (BDNF), and Val158Met in the catechol-O-methyltransferase (COMT), was analyzed among 281 alcohol-dependent individuals...
November 24, 2016: Journal of Addiction Medicine
https://www.readbyqxmd.com/read/27894482/-the-remote-monitoring-of-chronic-wounds-treated-in-the-home
#8
Nicolas Schinkel
The Franche-Comté Regional Health Authority, in collaboration with the chronic wound outpatient centre of Besançon university hospital and twelve volunteer sites, has developed a remote patient monitoring programme for monitoring chronic wounds in the home. It has been used by private practice nurses since 2009.
November 2016: Soins; la Revue de Référence Infirmière
https://www.readbyqxmd.com/read/27890888/cloning-and-expression-of-a-novel-catechol-o-methyltransferase-in-common-marmosets
#9
Shotaro Uehara, Yasuhiro Uno, Takashi Inoue, Erika Sasaki, Hiroshi Yamazaki
Catechol-O-methyltransferase (COMT) catalyzes the O-methylation of endogenous catechol amines and estrogens and exogenous catechol-type of drugs. A Parkinson's disease model of common marmoset (Callithrix jacchus) has been widely used in preclinical studies to evaluate inhibitory potential of new drug candidates on marmoset COMT. Despite COMT inhibitors could potentiate the pharmacological action of levodopa on Parkinson's disease in animal models, marmoset COMT cDNA has not yet been identified and characterized...
November 26, 2016: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/27886638/preliminary-evidence-that-negative-symptom-severity-relates-to-multilocus-genetic-profile-for-dopamine-signaling-capacity-and-d2-receptor-binding-in-healthy-controls-and-in-schizophrenia
#10
Sarah A Eisenstein, Ryan Bogdan, Ling Chen, Stephen M Moerlein, Kevin J Black, Joel S Perlmutter, Tamara Hershey, Deanna M Barch
Deficits in central, subcortical dopamine (DA) signaling may underlie negative symptom severity, particularly anhedonia, in healthy individuals and in schizophrenia. To investigate these relationships, we assessed negative symptoms with the Schedule for the Assessment of Negative Symptoms and the Brief Negative Symptom Scale (BNSS) and self-reported anhedonia with the Scales for Physical and Social Anhedonia (SPSA), Temporal Experience of Pleasure Scale, and Snaith-Hamilton Pleasure Scale in 36 healthy controls (HC), 27 siblings (SIB) of individuals with schizophrenia, and 66 individuals with schizophrenia or schizoaffective disorder (SCZ)...
November 17, 2016: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/27883923/gilles-de-la-tourette-syndrome-is-associated-with-hypermethylation-of-the-dopamine-d2-receptor-gene
#11
Kirsten R Müller-Vahl, Gesa Loeber, Alexandra Kotsiari, Linda Müller-Engling, Helge Frieling
Several lines of evidence support a "dopaminergic hypothesis" in the pathophysiology of Gilles de la Tourette syndrome (TS). The aim of this study was to investigate for the first time epigenetic changes in DNA methylation in different dopamine genes in adult patients with TS. We included 51 well characterized adult patients with TS (41 males, 10 females, mean age = 35 ± 12.6 years, range, 18-71 years) and compared results with data from a group of 51 sex- and age-matched healthy controls. Bisulfite sequencing was used to measure peripheral DNA methylation of the dopamine transporter (DAT), the dopamine D2 receptor (DRD2), and the catechol-O-methyltransferase (COMT) genes...
November 12, 2016: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/27882177/catechol-o-methyltransferase-promoter-hypomethylation-is-associated-with-the-risk-of-coronary-heart-disease
#12
Jinyan Zhong, Xiaoying Chen, Nan Wu, Caijie Shen, Hanbin Cui, Weiping Du, Zhaoxia Zhang, Mingjun Feng, Junsong Liu, Shaoyi Lin, Lulu Zhang, Jian Wang, Xiaomin Chen, Shiwei Duan
Catechol-O-methyltransferase (COMT) gene variation is known to be associated with the risk of acute coronary events. The purpose of the present study was to investigate the contribution of COMT promoter methylation towards the risk of coronary heart disease (CHD). COMT methylation was evaluated in 48 CHD cases and 48 well-matched non-CHD controls using bisulfite pyrosequencing technology. The results demonstrated that CHD cases had a significantly lower level of methylation at COMT CpG3 sites compared with the controls (33...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27881145/evaluation-of-efficacy-and-efficiency-of-a-pragmatic-intervention-by-a-social-worker-to-support-informal-caregivers-of-elderly-patients-the-ice-study-study-protocol-for-a-randomized-controlled-trial
#13
Astrid Pozet, Catherine Lejeune, Magalie Bonnet, Sandrine Dabakuyo, Michèle Dion, Philippe Fagnoni, Maryse Gaimard, Geneviève Imbert, Virginie Nerich, Audrey Foubert, Morgane Chotard, Marie Bonin, Amélie Anota, Franck Bonnetain
BACKGROUND: Medical progress and the lifestyle modification have prolonged life expectancy, despite the development of chronic diseases. Support and care for older subjects are often provided by a network of informal caregivers composed of family, friends and neighbors, who are essential in helping older persons to continue living at home. It has been shown that the extent and diversity of informal tasks may jeopardize the physical, mental and social wellbeing of caregivers. METHODS/DESIGN: The aim of the Informal Carers of Elderly cohort is to define, through a longitudinal study, profiles of caregivers of older patients with a diagnosis of one of the following diseases: cancer (breast, prostate, colorectal), neurodegenerative diseases (Parkinson's disease, Alzheimer's disease and similar diseases), neurovascular diseases (stroke), sensory diseases (age-related macular degeneration (AMD)) and heart disease (heart failure)...
November 3, 2016: Trials
https://www.readbyqxmd.com/read/27871136/contribution-of-different-dispersal-sources-to-the-metabolic-response-of-lake-bacterioplankton-following-a-salinity-change
#14
Jérôme Comte, Silke Langenheder, Mercè Berga, Eva S Lindström
Dispersal can modify how bacterial community composition (BCC) changes in response to environmental perturbations, yet knowledge about the functional consequences of dispersal is limited. Here we hypothesize that changes in bacterial community production in response to a salinity disturbance depend on the possibility to recruit cells from different dispersal sources. To investigate this, we conducted an in situ mesocosm experiment where bacterial communities of an oligotrophic lake were exposed to different salinities (0, 18, 36 psu) for two weeks and subjected to dispersal of cells originating from sediments, air (mesocosms open to air deposition), both or none...
November 21, 2016: Environmental Microbiology
https://www.readbyqxmd.com/read/27866942/a-review-of-molecular-genetic-studies-of-neurocognitive-deficits-in-schizophrenia
#15
REVIEW
Gwyneth Zai, Trevor W Robbins, Barbara J Sahakian, James L Kennedy
Schizophrenia is a complex and debilitating illness with strong genetic loading. In line with its heterogeneous symptomatology, evidence suggests genetic etiologies for the phenotypes in schizophrenia. A search across endophenotypes has pointed towards consistent findings in its neurocognitive deficits. Extensive literature has demonstrated impaired cognition including executive function, attention, and memory in schizophrenia patients when compared to healthy subjects. This review (1) provides an overview of recent studies and (2) develops an up-to-date conceptualization of genetic variations influencing neurocognitive functions in schizophrenia patients...
November 17, 2016: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/27862852/transgenic-switchgrass-panicum-virgatum-l-targeted-for-reduced-recalcitrance-to-bioconversion-a-two-year-comparative-analysis-of-field-grown-lines-modified-for-target-gene-or-genetic-element-expression
#16
Alexandru Dumitrache, Jace Natzke, Miguel Rodriguez, Kelsey L Yee, Olivia A Thompson, Charleson R Poovaiah, Hui Shen, Mitra Mazarei, Holly L Baxter, Chunxiang Fu, Zeng-Yu Wang, Ajaya K Biswal, Guifen Li, Yuhong Tang, C Neal Stewart, Richard A Dixon, Richard S Nelson, Debra Mohnen, Jonathan Mielenz, Steven D Brown, Brian H Davison
Transgenic Panicum virgatum L. silencing (KD) or over-expressing (OE) specific genes or a small RNA (GAUT4-KD, miRNA156-OE, MYB4-OE, COMT-KD and FPGS-KD) were grown in the field and aerial tissue analyzed for biofuel production traits. Clones representing independent transgenic lines were established and senesced tissue sampled after year one and two growth cycles. Biomass was analyzed for wall sugars, recalcitrance to enzymatic digestibility, and biofuel production using separate hydrolysis and fermentation (SHF)...
November 18, 2016: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/27853425/interaction-effects-of-bdnf-and-comt-genes-on-resting-state-brain-activity-and-working-memory
#17
Wen Chen, Chunhui Chen, Mingrui Xia, Karen Wu, Chuansheng Chen, Qinghua He, Gui Xue, Wenjing Wang, Yong He, Qi Dong
Catechol-O-methyltransferase (COMT) and brain-derived neurotrophic factor (BDNF) genes have been found to interactively influence working memory (WM) as well as brain activation during WM tasks. However, whether the two genes have interactive effects on resting-state activities of the brain and whether these spontaneous activations correlate with WM are still unknown. This study included behavioral data from WM tasks and genetic data (COMT rs4680 and BDNF Val66Met) from 417 healthy Chinese adults and resting-state fMRI data from 298 of them...
2016: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/27852134/further-evidence-of-the-limited-role-of-candidate-genes-in-relation-to-infant-mother-attachment-outcomes
#18
Esther M Leerkes, Lindsey R Gedaly, Nan Zhou, Susan Calkins, Vincent C Henrich, Andrew Smolen
In this paper, we examine the associations between specific candidate genes (DRD2, DRD4, COMT, biallelic and tri-allelic 5HTTLPR, and OXTR) and infant attachment outcomes as main effects and in conjunction with maternal sensitivity. The sample included 200 infants (97 European American, 94 African-American, and 9 biracial) and their mothers. Maternal sensitivity and overtly negative maternal behavior were observed when infants were 6 months and 1 year old in distress-eliciting contexts, attachment was assessed via the Strange Situation at age 1, and DNA samples were collected when children were 2 years old...
November 16, 2016: Attachment & Human Development
https://www.readbyqxmd.com/read/27836240/influence-of-comt-val-158-met-polymorphism-on-emotional-decision-making-a-sex-dependent-relationship
#19
Danielle de Souza Costa, Antoine Bechara, Jonas Jardim de Paula, Marco Aurélio Romano-Silva, Humberto Correa, Guilherme Menezes Lage, Débora Marques de Miranda, Leandro Fernandes Malloy-Diniz
The biological underpinnings of sex-related differences in decision-making are still under-explored. The COMT gene is related to sexual dimorphism and with different choices made under uncertainty, albeit no study has specifically investigated a moderation effect of sex on the association between the COMT gene and the performance on decision-making paradigms. In this study, we investigated the influence of the COMT Val(158)Met polymorphism on Iowa Gambling Task (IGT) performance depending on sex in a healthy adult sample...
November 1, 2016: Psychiatry Research
https://www.readbyqxmd.com/read/27832102/cloning-and-phylogenetic-analysis-of-brassica-napus-l-caffeic-acid-o-methyltransferase-1-gene-family-and-its-expression-pattern-under-drought-stress
#20
Wei Li, Junxing Lu, Kun Lu, Jianglian Yuan, Jieheng Huang, Hai Du, Jiana Li
For many plants, regulating lignin content and composition to improve lodging resistance is a crucial issue. Caffeic acid O-methyltransferase (COMT) is a lignin monomer-specific enzyme that controls S subunit synthesis in plant vascular cell walls. Here, we identified 12 BnCOMT1 gene homologues, namely BnCOMT1-1 to BnCOMT1-12. Ten of 12 genes were composed of four highly conserved exons and three weakly conserved introns. The length of intron I, in particular, showed enormous diversification. Intron I of homologous BnCOMT1 genes showed high identity with counterpart genes in Brassica rapa and Brassica oleracea, and intron I from positional close genes in the same chromosome were relatively highly conserved...
2016: PloS One
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