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https://www.readbyqxmd.com/read/28346849/clostridium-perfringens-type-a-isolates-of-animal-origin-with-decreased-susceptibility-to-metronidazole-show-extensive-genetic-diversity
#1
Sergio Álvarez-Pérez, José L Blanco, Marta E García
Metronidazole is a first-line drug for the treatment of human infections caused by anaerobic bacteria. Although most Clostridium perfringens isolates are susceptible to metronidazole, a number of strains with decreased susceptibility have been obtained in clinical and environmental surveys. However, little is known yet about the toxinotype and genetic diversity of metronidazole-resistant C. perfringens strains. We tested for susceptibility to metronidazole and assessed the toxigenic status and amplified fragment length polymorphism (AFLP) diversity of a collection of 80 C...
March 27, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28346546/antimicrobial-susceptibility-and-multilocus-sequence-typing-of-mycoplasma-capricolum-subsp-capricolum
#2
Juan Tatay-Dualde, Miranda Prats-van der Ham, Christian de la Fe, Ana Paterna, Antonio Sánchez, Juan Carlos Corrales, Antonio Contreras, Sebastiana Tola, Ángel Gómez-Martin
Mycoplasma capricolum subsp. capricolum is one of the causative agents of contagious agalactia (CA). Nevertheless, there is still a lack of information about its antimicrobial susceptibility and genetic characteristics. Therefore, the aim of this work was to study the antimicrobial and genetic variability of different Mycoplasma capricolum subsp. capricolum field isolates. For this purpose, the growth inhibition effect of 18 antimicrobials and a multilocus sequence typing (MLST) scheme based on five housekeeping genes (fusA, glpQ, gyrB, lepA and rpoB) were performed on 32 selected field isolates from Italy and Spain...
2017: PloS One
https://www.readbyqxmd.com/read/28346478/association-of-enos-and-cav-1-gene-polymorphisms-with-susceptibility-risk-of-large-artery-atherosclerotic-stroke
#3
Hann-Yeh Shyu, Ming-Hua Chen, Yi-Hsien Hsieh, Jia-Ching Shieh, Ling-Rong Yen, Hsiao-Wei Wang, Chun-Wen Cheng
Endothelial nitric oxide synthase (eNOS) is localized in caveole and has important effects on caveolar coordination through its interaction with caveolin-1 (Cav-1), which supports normal functioning of vascular endothelial cells. However, the relationship between genotypic polymorphisms of e-NOS and Cav-1 genes and ischemic stroke (IS) remains lesser reported. This hospital-based case-control study aimed to determine the genetic polymorphisms of the eNOS (Glu298Asp) and Cav-1 (G14713A and T29107A) genes in association with susceptibility risk in patients who had suffered from a large artery atherosclerotic (LAA) stroke...
2017: PloS One
https://www.readbyqxmd.com/read/28346466/common-and-rare-exonic-muc5b-variants-associated-with-type-2-diabetes-in-han-chinese
#4
Guanjie Chen, Zhenjian Zhang, Sally N Adebamowo, Guozheng Liu, Adebowale Adeyemo, Yanxun Zhou, Ayo P Doumatey, Chuntao Wang, Jie Zhou, Wenqiang Yan, Daniel Shriner, Fasil Tekola-Ayele, Amy R Bentley, Congqing Jiang, Charles N Rotimi
Genome-wide association studies have identified over one hundred common genetic risk variants associated with type 2 diabetes (T2D). However, most of the heritability of T2D has not been accounted for. In this study, we investigated the contribution of rare and common variants to T2D susceptibility by analyzing exome array data in 1,908 Han Chinese genotyped with Affymetrix Axiom® Exome Genotyping Arrays. Based on the joint common and rare variants analysis of 57,704 autosomal SNPs within 12,244 genes using Sequence Kernel Association Tests (SKAT), we identified significant associations between T2D and 25 variants (9 rare and 16 common) in MUC5B, p-value 1...
2017: PloS One
https://www.readbyqxmd.com/read/28346444/genetic-variants-associated-with-mosaic-y-chromosome-loss-highlight-cell-cycle-genes-and-overlap-with-cancer-susceptibility
#5
Daniel J Wright, Felix R Day, Nicola D Kerrison, Florian Zink, Alexia Cardona, Patrick Sulem, Deborah J Thompson, Svanhvit Sigurjonsdottir, Daniel F Gudbjartsson, Agnar Helgason, J Ross Chapman, Steve P Jackson, Claudia Langenberg, Nicholas J Wareham, Robert A Scott, Unnur Thorsteindottir, Ken K Ong, Kari Stefansson, John R B Perry
The Y chromosome is frequently lost in hematopoietic cells, which represents the most common somatic alteration in men. However, the mechanisms that regulate mosaic loss of chromosome Y (mLOY), and its clinical relevance, are unknown. We used genotype-array-intensity data and sequence reads from 85,542 men to identify 19 genomic regions (P < 5 × 10(-8)) that are associated with mLOY. Cumulatively, these loci also predicted X chromosome loss in women (n = 96,123; P = 4 × 10(-6)). Additional epigenome-wide methylation analyses using whole blood highlighted 36 differentially methylated sites associated with mLOY...
March 27, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28346443/genome-wide-association-study-of-glioma-subtypes-identifies-specific-differences-in-genetic-susceptibility-to-glioblastoma-and-non-glioblastoma-tumors
#6
Beatrice S Melin, Jill S Barnholtz-Sloan, Margaret R Wrensch, Christoffer Johansen, Dora Il'yasova, Ben Kinnersley, Quinn T Ostrom, Karim Labreche, Yanwen Chen, Georgina Armstrong, Yanhong Liu, Jeanette E Eckel-Passow, Paul A Decker, Marianne Labussière, Ahmed Idbaih, Khe Hoang-Xuan, Anna-Luisa Di Stefano, Karima Mokhtari, Jean-Yves Delattre, Peter Broderick, Pilar Galan, Konstantinos Gousias, Johannes Schramm, Minouk J Schoemaker, Sarah J Fleming, Stefan Herms, Stefanie Heilmann, Markus M Nöthen, Heinz-Erich Wichmann, Stefan Schreiber, Anthony Swerdlow, Mark Lathrop, Matthias Simon, Marc Sanson, Ulrika Andersson, Preetha Rajaraman, Stephen Chanock, Martha Linet, Zhaoming Wang, Meredith Yeager, John K Wiencke, Helen Hansen, Lucie McCoy, Terri Rice, Matthew L Kosel, Hugues Sicotte, Christopher I Amos, Jonine L Bernstein, Faith Davis, Dan Lachance, Ching Lau, Ryan T Merrell, Joellen Shildkraut, Francis Ali-Osman, Siegal Sadetzki, Michael Scheurer, Sanjay Shete, Rose K Lai, Elizabeth B Claus, Sara H Olson, Robert B Jenkins, Richard S Houlston, Melissa L Bondy
Genome-wide association studies (GWAS) have transformed our understanding of glioma susceptibility, but individual studies have had limited power to identify risk loci. We performed a meta-analysis of existing GWAS and two new GWAS, which totaled 12,496 cases and 18,190 controls. We identified five new loci for glioblastoma (GBM) at 1p31.3 (rs12752552; P = 2.04 × 10(-9), odds ratio (OR) = 1.22), 11q14.1 (rs11233250; P = 9.95 × 10(-10), OR = 1.24), 16p13.3 (rs2562152; P = 1.93 × 10(-8), OR = 1.21), 16q12...
March 27, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28346025/guidance-on-radiation-dose-limits-for-the-lens-of-the-eye-overview-of-the-recommendations-in-ncrp-commentary-no-26
#7
Lawrence T Dauer, Elizabeth A Ainsbury, Joseph Dynlacht, David Hoel, Barbara E K Klein, Don Mayer, Christina R Prescott, Raymond H Thornton, Eliseo Vano, Gayle E Woloschak, Cynthia M Flannery, Lee E Goldstein, Nobuyuki Hamada, Phung K Tran, Michael P Grissom, Eleanor A Blakely
PURPOSE: This review summarizes the conclusions and recommendations of the new NCRP Commentary No. 26 guidance on radiation dose limits for the lens of the eye. The NCRP also addressed radiation protection principles with respect to the lens of the eye, discussed the current understanding of eye biology and lens effects, reviewed and evaluated epidemiology, and assessed exposed populations with the potential for significant radiation exposures to the lens while suggesting monitoring and protection practices...
March 27, 2017: International Journal of Radiation Biology
https://www.readbyqxmd.com/read/28345816/germline-variation-in-the-3-untranslated-region-of-the-pou2af1-gene-is-associated-with-susceptibility-to-lymphoma
#8
Kan Zhai, Jiang Chang, Jinlong Hu, Chen Wu, Dongxin Lin
Genetic variations in certain genes may alter the susceptibility to lymphoma. We searched electronic databases and selected candidate single-nucleotide polymorphisms (SNPs) located within 3'-untranslated regions (3'-UTRs) that might affect miRNA-binding ability in the 50 most dysregulated genes in lymphoma for further study. We found that rs1042752-located in the 3'-UTR of POU2AF1, which plays a vital role in lymphomagenesis-was significantly associated with lymphoma risk in a case-control study with 793 patients and 939 controls...
March 27, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28345529/diversity-of-extended-spectrum-beta-lactamase-producing-escherichia-coli-rods
#9
Patrycja Zalas-Więcek, Tomasz Bogiel, Krzysztof Wiśniewski, Eugenia Gospodarek-Komkowska
INTRODUCTION: The aim of the study was to evaluate genetic relatedness and antimicrobial susceptibility of extended-spectrum beta-lactamase-producing E. coli strains isolated from patients hospitalized in the University Hospital in Bydgoszcz (Poland). MATERIAL AND METHODS: The study included 33 extended-spectrum beta-lactamase-producing E. coli strains isolated from 31 patients. The chromosomal DNA was extracted from the strains and separated by pulsed-field gel electrophoresis...
March 27, 2017: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/28344591/studying-the-genetics-of-resistance-to-cyhv-3-disease-using-introgression-from-feral-to-cultured-common-carp-strains
#10
Roni Tadmor-Levi, Efrat Asoulin, Gideon Hulata, Lior David
Sustainability and further development of aquaculture production are constantly challenged by outbreaks of fish diseases, which are difficult to prevent or control. Developing fish strains that are genetically resistant to a disease is a cost-effective and a sustainable solution to address this challenge. To do so, heritable genetic variation in disease resistance should be identified and combined together with other desirable production traits. Aquaculture of common carp has suffered substantial losses from the infectious disease caused by the cyprinid herpes virus type 3 (CyHV-3) virus and the global spread of outbreaks indicates that many cultured strains are susceptible...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28344492/cyp2c9-cypc19-and-cyp2d6-gene-profiles-and-gene-susceptibility-to-drug-response-and-toxicity-in-turkish-population
#11
Merve Arici, Gül Özhan
Pharmacogenetics is a vast field covering drug discovery research, the genetic basis of pharmacokinetics and dynamics, genetic testing and clinical management in diseases. Pharmacogenetic approach usually focuses on variations of drug transporters, drug targets, drug metabolizing enzymes and other biomarker genes. Cytochrome P450 (CYP) enzymes, an essential source of variability in drug-response, play role in not only phase I-dependent metabolism of xenobiotics but also metabolism of endogenous compounds such as steroids, vitamins and fatty acids...
March 2017: Saudi Pharmaceutical Journal: SPJ: the Official Publication of the Saudi Pharmaceutical Society
https://www.readbyqxmd.com/read/28344482/the-genetic-profiles-of-cyp1a1-cyp1a2-and-cyp2e1-enzymes-as-susceptibility-factor-in-xenobiotic-toxicity-in-turkish-population
#12
Merve Arici, Gül Özhan
Evaluation and sequencing of heritable alterations in the human genome and the large-scale identification of gene polymorphism for understanding the genetic background of individuals in response to potential toxicants are provided by toxicogenetics. Cytochrome P450 (CYP) enzymes play role not only phase I-dependent metabolism of xenobiotics but also metabolism of endogenous compounds. CYP1A1, CYP1A2 and CYP2E1 enzymes, which are in phase I enzymes, are responsible for metabolic activation and detoxification of several chemical compounds...
February 2017: Saudi Pharmaceutical Journal: SPJ: the Official Publication of the Saudi Pharmaceutical Society
https://www.readbyqxmd.com/read/28344162/identification-of-genetic-markers-of-resistance-to-echinocandins-azoles-and-5-fluorocytosine-in-candida-glabrata-by-next-generation-sequencing-a-feasibility-study
#13
Chayanika Biswas, Sharon C-A Chen, Catriona Halliday, Karina Kennedy, E Geoffrey Playford, Deborah J Marriott, Monica A Slavin, Tania C Sorrell, Vitali Sintchenko
OBJECTIVES: Multi-antifungal drug resistance in Candida glabrata is increasing. We examined the feasibility of next generation sequencing (NGS) to investigate the presence of antifungal drug resistance markers in C. glabrata. METHODS: The antifungal susceptibility of 12 clinical isolates and one ATCC strain of C. glabrata was determined using the Sensititre YeastOne® YO10 assay. These included three isolate pairs where the second isolate of each pair had developed a rise in drug MICs...
March 23, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28343961/protein-depletion-using-the-arabinose-promoter-in-xanthomonas-citri-subsp-citri
#14
Lilian A Lacerda, Lucia B Cavalca, Paula M M Martins, José S Govone, Maurício Bacci, Henrique Ferreira
Xanthomonas citri subsp. citri (X. citri) is a plant pathogen and the etiological agent of citrus canker, a severe disease that affects all the commercially important citrus varieties, and has worldwide distribution. Citrus canker cannot be healed, and the best method known to control the spread of X. citri in the orchards is the eradication of symptomatic and asymptomatic plants in the field. However, in the state of São Paulo, Brazil, the main orange producing area in the world, control is evolving to an integrated management system (IMS) in which growers have to use less susceptible plants, windshields to prevent bacterial spread out and sprays of cupric bactericidal formulations...
March 23, 2017: Plasmid
https://www.readbyqxmd.com/read/28343913/sumoylation-inhibition-mediated-by-disruption-of-sumo-e1-e2-interactions-confers-plant-susceptibility-to-necrotrophic-fungal-pathogens
#15
Laura Castaño-Miquel, Abraham Mas, Inês Teixeira, Josep Seguí, Anna Perearnau, Bhagyasree N Thampi, Arnaldo L Schapire, Natalia Rodrigo, Gaelle La Verde, Silvia Manrique, Maria Coca, L Maria Lois
Protein modification by SUMO modulates essential biological processes in eukaryotes. SUMOylation is facilitated by sequential action of the E1-activating, E2-conjugating, and E3-ligase enzymes. In plants, SUMO regulates plant development and stress responses, which are key determinants in agricultural productivity. To generate additional tools for advancing our knowledge about the SUMO biology, we have developed a strategy for inhibiting in vivo SUMO conjugation based on disruption of SUMO E1-E2 interactions through expression of E1 SAE2(UFDCt) domain...
February 14, 2017: Molecular Plant
https://www.readbyqxmd.com/read/28343422/challenges-for-epigenetic-research-in-inflammatory-bowel-diseases
#16
Richard Kellermayer
The human epigenome may link environmental exposures and commensal microbiota changes to host pathology in respect to the developmental origins of inflammatory bowel diseases (ulcerative colitis [UC] and Crohn's disease [more appropriately Crohn disease, CD]). Genetic predisposition - prenatal, perinatal and pediatric environmental influences - microbiome aberration (dysbiosis) and immune dysregulation appear to be important elements in disease development, progression and maintenance. The prevalence of combined genetic and epigenetic susceptibility toward UC and CD is calculated herein to be as high as 2%, and approximately 1% for UC and CD in highly developed countries, respectively...
March 27, 2017: Epigenomics
https://www.readbyqxmd.com/read/28343232/genetic-polymorphisms-in-defb1-and-mirna202-are-involved-in-salivary-human-%C3%AE-defensin-1-levels-and-caries-experience-in-children
#17
Andrea Lips, Leonardo Santos Antunes, Lívia Azeredo Antunes, Júlia Guimarães Barcellos de Abreu, Driely Barreiros, Daniela Silva Barroso de Oliveira, Ana Carolina Batista, Paulo Nelson-Filho, Léa Assed Bezerra da Silva, Raquel Assed Bezerra da Silva, Gutemberg Gomes Alves, Erika Calvano Küchler
The antimicrobial peptides human β-defensins (hBDs) are encoded by β-defensin genes (DEFBs) and are possibly involved in caries susceptibility. In this study we aimed (1) to investigate the relationship between salivary hBDs and caries and (2) to evaluate the association of genetic polymorphisms in DEFB1 and microRNA202 (miRNA202) with salivary levels of hBDs and caries experience. Two data sets were available for this study, totalizing 678 Brazilian children. Dental examination and saliva collection were performed in all included children...
March 25, 2017: Caries Research
https://www.readbyqxmd.com/read/28343148/de-novo-mutations-in-cbl-causing-early-onset-paediatric-moyamoya-angiopathy
#18
Stéphanie Guey, Lou Grangeon, Francis Brunelle, Françoise Bergametti, Jeanne Amiel, Stanislas Lyonnet, Audrey Delaforge, Minh Arnould, Béatrice Desnous, Céline Bellesme, Dominique Hervé, Jan C Schwitalla, Markus Kraemer, Elisabeth Tournier-Lasserve, Manoelle Kossorotoff
BACKGROUND: Moyamoya angiopathy (MMA) is characterised by a progressive stenosis of the terminal part of the internal carotid arteries and the development of abnormal collateral deep vessels. Its pathophysiology is unknown. MMA can be the sole manifestation of the disease (moyamoya disease) or be associated with various conditions (moyamoya syndrome) including some Mendelian diseases. We aimed to investigate the genetic basis of moyamoya using a whole exome sequencing (WES) approach conducted in sporadic cases without any overt symptom suggestive of a known Mendelian moyamoya syndrome...
March 25, 2017: Journal of Medical Genetics
https://www.readbyqxmd.com/read/28342937/molecular-epidemiology-of-staphylococcus-aureus-nasal-colonization-among-patients-and-their-parents-guardian-in-an-iranian-referral-hospital
#19
Babak Pourakbari, Mahmoud Khodabandeh, Shima Mahmoudi, Farah Sabouni, Alireza Aziz-Ahari, Abbas Bahador, Sepideh Keshavarz Valian, Reihaneh Hosseinpour Sadeghi, Setareh Mamishi
INTRODUCTION: Carriage of Staphylococcus aureus in the nose appears to play a key role in the epidemiology and pathogenesis of infection. It is important to investigate the genetic relatedness of S. aureus and MRSA clones in different geographic regions. The aim of this study was to assess the nasal carriage rate of S. aureus, including MRSA strains in both hospitalized children and general adult population (parents/guardian). In addition, antibiotic susceptibility pattern and molecular diversity of S...
March 22, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28342882/functional-neuroimaging-findings-in-healthy-middle-aged-adults-at-risk-of-alzheimer-s-disease
#20
REVIEW
Mirette Habib, Elijah Mak, Silvy Gabel, Li Su, Guy Williams, Adam Waldman, Katie Wells, Karen Ritchie, Craig Ritchie, John T O'Brien
It is well established that the neurodegenerative process of Alzheimer's disease (AD) begins many years before symptom onset. This preclinical phase provides a crucial time-window for therapeutic intervention, though this requires biomarkers that could evaluate the efficacy of future disease-modification treatments in asymptomatic individuals. The last decade has witnessed a proliferation of studies characterizing the temporal sequence of the earliest functional and structural brain imaging changes in AD. These efforts have focused on studying individuals who are highly vulnerable to develop AD, such as those with familial genetic mutations, susceptibility genes (i...
March 22, 2017: Ageing Research Reviews
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