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https://www.readbyqxmd.com/read/27918378/safety-of-infliximab-following-live-virus-vaccination-in-kawasaki-disease-patients
#1
Aaron M Lee, Jane C Burns, Adriana H Tremoulet
No published data are available regarding infliximab use in Kawasaki Disease (KD) patients with recent live virus vaccination. We investigated 38 acute KD patients who received infliximab within 90 days of receiving MMR, VZV, or Rotavirus vaccines. There were no adverse events or serious infections, which suggests that infliximab use in acute KD patients with recent live viral vaccinations is safe.
December 1, 2016: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/27917775/the-mass-miniature-chest-radiography-programme-in-cape-town-south-africa-1948-1994-the-impact-of-active-tuberculosis-case-finding
#2
S M Hermans, J R Andrews, L-G Bekker, R Wood
BACKGROUND: Tuberculosis (TB) control programmes rely mainly on passive detection of symptomatic individuals. The resurgence of TB has rekindled interest in active case finding. Cape Town (South Africa) had a mass miniature radiography (MMR) screening programme from 1948 to 1994. OBJECTIVE: To evaluate screening coverage, yield and secular trends in TB notifications during the MMR programme. METHODS: We performed an ecological analysis of the MMR programme and TB notification data from the City of Cape Town Medical Officer of Health reports for 1948 - 1994...
December 1, 2016: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
https://www.readbyqxmd.com/read/27913567/drug-repositioning-screens-identify-triamterene-as-a-selective-drug-for-the-treatment-of-dna-mismatch-repair-deficient-cells
#3
Delphine Guillotin, Philip Austin, Rumena Begum, Marta O Freitas, Ashirwad Merve, Tim Brend, Susan C Short, Silvia Marino, Sarah A Martin
PURPOSE: The DNA Mismatch repair (MMR) pathway is required for the maintenance of genome stability. Unsurprisingly, mutations in MMR genes occur in a wide range of different cancers. Studies thus far have largely focused on specific tumor types or MMR mutations, however it is becoming increasingly clear that a therapy targeting MMR-deficiency in general would be clinically very beneficial. EXPERIMENTAL DESIGN: Based on a drug-repositioning approach, we screened a large panel of cell lines with various MMR deficiencies from a range of different tumor types with a compound drug library of previously approved drugs...
December 2, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/27907910/a-mononucleotide-repeat-in-prrt2-is-an-important-frequent-target-of-mismatch-repair-deficiency-in-cancer
#4
Inês Teles Alves, David Cano, René Böttcher, Hetty van der Korput, Winand Dinjens, Guido Jenster, Jan Trapman
The DNA mismatch repair (MMR) system corrects DNA replication mismatches thereby contributing to the maintenance of genomic stability. MMR deficiency has been observed in prostate cancer but its impact on the genomic landscape of these tumours is not known. In order to identify MMR associated mutations in prostate cancer we have performed whole genome sequencing of the MMR deficient PC346C prostate cancer cell line. We detected a total of 1196 mutations in PC346C which was 1.5-fold higher compared to a MMR proficient prostate cancer sample (G089)...
November 19, 2016: Oncotarget
https://www.readbyqxmd.com/read/27905960/improving-the-measurement-of-maternal-mortality-in-thailand-using-multiple-data-sources
#5
Worawan Chandoevwit, Phasith Phatchana, Kanjana Sirigomon, Kunakorn Ieawsuwan, Jutatip Thungthong, Saray Ruangdej
BACKGROUND: Thailand uses cause of death records in civil registration to summarize maternal mortality statistics. A report by the Department of Health using the Reproductive Age Mortality Studies (RAMOS) reported that the maternal mortality ratio (MMR) in 1997 was approximately three to four times higher than MMR based on the civil registration cause of death records. Here, we used multiple data sources to systematically measure maternal mortality in Thailand and showed a disparity between age groups and regions...
May 4, 2016: Population Health Metrics
https://www.readbyqxmd.com/read/27903905/human-mlh1-suppresses-the-insertion-of-telomeric-sequences-at-intra-chromosomal-sites-in-telomerase-expressing-cells
#6
Pingping Jia, Megan Chastain, Ying Zou, Chengtao Her, Weihang Chai
Aberrant formation of interstitial telomeric sequences (ITSs) promotes genome instabilities. However, it is unclear how aberrant ITS formation is suppressed in human cells. Here, we report that MLH1, a key protein involved in mismatch repair (MMR), suppresses telomeric sequence insertion (TSI) at intra-chromosomal regions. The frequency of TSI can be elevated by double-strand break (DSB) inducer and abolished by ATM/ATR inhibition. Suppression of TSI requires MLH1 recruitment to DSBs, indicating that MLH1's role in DSB response/repair is important for suppressing TSI...
November 29, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27903453/repair-of-8-oxo-7-8-dihydroguanine-in-prokaryotic-and-eukaryotic-cells-properties-and-biological-roles-of-the-fpg-and-ogg1-dna-n-glycosylases
#7
Serge Boiteux, Franck Coste, Bertrand Castaing
Oxidatively damaged DNA results from the attack of sugar and base moieties by reactive oxygen species (ROS), which are formed as byproducts of normal cell metabolism and during exposure to endogenous or exogenous chemical or physical agents. Guanine, having the lowest redox potential, is the DNA base the most susceptible to oxidation, yielding products such as 8-oxo-7,8-dihydroguanine (8-oxoG) and 2-6-diamino-4-hydroxy-5-formamidopyrimidine (FapyG). In DNA, 8-oxoG was shown to be mutagenic yielding GC to TA transversions upon incorporation of dAMP opposite this lesion by replicative DNA polymerases...
November 26, 2016: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/27899338/high-touch-and-high-tech-ht2-proposal-transforming-patient-engagement-throughout-the-continuum-of-care-by-engaging-patients-with-portal-technology-at-the-bedside
#8
Ann Scheck McAlearney, Cynthia J Sieck, Jennifer L Hefner, Alison M Aldrich, Daniel M Walker, Milisa K Rizer, Susan D Moffatt-Bruce, Timothy R Huerta
BACKGROUND: For patients with complex care needs, engagement in disease management activities is critical. Chronic illnesses touch almost every person in the United States. The costs are real, personal, and pervasive. In response, patients often seek tools to help them manage their health. Patient portals, personal health records tethered to an electronic health record, show promise as tools that patients value and that can improve health. Although patient portals currently focus on the outpatient experience, the Ohio State University Wexner Medical Center (OSUWMC) has deployed a portal designed specifically for the inpatient experience that is connected to the ambulatory patient portal available after discharge...
November 29, 2016: JMIR Research Protocols
https://www.readbyqxmd.com/read/27896849/cytoplasmic-msh2-immunoreactivity-in-a-patient-with-lynch-syndrome-with-an-epcam-msh2-fusion
#9
Shigeki Sekine, Reiko Ogawa, Shinya Saito, Mineko Ushiama, Dai Shida, Takeshi Nakajima, Hirokazu Taniguchi, Nobuyoshi Hiraoka, Teruhiko Yoshida, Kokichi Sugano
AIMS: Immunohistochemistry for mismatch repair (MMR) proteins is being increasingly used to examine MMR status in tumours. The aim of the present article was to report the case of a colon cancer patient with Lynch syndrome who showed unusual cytoplasmic MMR protein localization. METHODS AND RESULTS: Histologically, the colon cancer was diagnosed as medullary carcinoma associated with prominent tumour-infiltrating lymphocytes and a Crohn's-like reaction. Immunohistochemistry revealed cytoplasmic and nuclear expression of MSH2 in non-neoplastic cells, and exclusively cytoplasmic expression in tumour cells...
October 19, 2016: Histopathology
https://www.readbyqxmd.com/read/27896456/dna-copy-number-profiling-in-microsatellite-stable-and-microsatellite-unstable-hereditary-non-polyposis-colorectal-cancers-by-targeted-cnv-array
#10
Weixiang Chen, Jun Ding, Long Jiang, Zebing Liu, Xiaoyan Zhou, Daren Shi
About half of hereditary non-polyposis colorectal cancers (HNPCCs) fulfilling the Amsterdam criteria (AC) do not display evidence of mismatch repair defects, and the difference between microsatellite-stable (MSS) and microsatellite-unstable HNPCC remains poorly understood. The study was to compare overall copy number variation (CNV) and loss of heterozygosity (LOH) of the entire genome in HNPCCs with MSS and microsatellite-instability (MSI) using the Cytoscan HD Array. This was a study carried out in samples from 20 patients with MSS HNPCC and four patients with MSI HNPCC from the Fudan University Shanghai Cancer Center (China)...
November 28, 2016: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/27890638/aberrant-base-excision-repair-pathway-of-oxidatively-damaged-dna-implications-for-degenerative-diseases
#11
Ibtissam Talhaoui, Bakhyt T Matkarimov, Thierry Tchenio, Dmitry O Zharkov, Murat K Saparbaev
In cellular organisms composition of DNA is constrained to only four nucleobases A, G, T and C, except for minor DNA base modifications such as methylation which serves for defence against foreign DNA or gene expression regulation. Interestingly, this severe evolutionary constraint among other things demands DNA repair systems to discriminate between regular and modified bases. DNA glycosylases specifically recognize and excise damaged bases among vast majority of regular bases in the base excision repair (BER) pathway...
November 24, 2016: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/27888432/candidate-predisposing-germline-copy-number-variants-in-early-onset-colorectal-cancer-patients
#12
A J Brea-Fernandez, C Fernandez-Rozadilla, M Alvarez-Barona, D Azuara, M M Ginesta, J Clofent, L de Castro, D Gonzalez, M Andreu, X Bessa, X Llor, R Xicola, R Jover, A Castells, S Castellvi-Bel, G Capella, A Carracedo, C Ruiz-Ponte
PURPOSE: A great proportion of the heritability of colorectal cancer (CRC) still remains unexplained, and rare variants, as well as copy number changes, have been proposed as potential candidates to explain the so-called 'missing heritability'. We aimed to identify rare high-to-moderately penetrant copy number variants (CNVs) in patients suspected of having hereditary CRC due to an early onset. METHODS/PATIENTS: We have selected for genome-wide copy number analysis, 27 MMR-proficient early onset CRC patients (<50 years) without identifiable germline mutations in Mendelian genes related to this phenotype...
November 25, 2016: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/27886675/pathogenic-germline-mcm9-variants-are-rare-in-australian-lynch-like-syndrome-patients
#13
Qing Liu, Luke B Hesson, Andrea C Nunez, Deborah Packham, Nicholas J Hawkins, Robyn L Ward, Mathew A Sloane
Lynch syndrome is a hereditary cancer syndrome caused by the autosomal dominant inheritance of loss-of-function mutations in DNA mismatch repair (MMR) genes. Approximately one quarter of clinically suspected cases have no identifiable germline mutation in any MMR gene, a condition known as Lynch-like syndrome (LLS). MCM9 was recently identified as the DNA helicase in the mammalian MMR complex and loss of helicase activity results in microsatellite instability. We hypothesized that pathogenic variants in MCM9 may account for LLS...
November 2016: Cancer Genetics
https://www.readbyqxmd.com/read/27886214/epigenetic-enhancement-of-the-post-replicative-dna-mismatch-repair-of-mammalian-genomes-by-a-hemi-m-cpg-np95-dnmt1-axis
#14
Keh-Yang Wang, Chun-Chang Chen, Shih-Feng Tsai, Che-Kun James Shen
DNA methylation at C of CpG dyads ((m)CpG) in vertebrate genomes is essential for gene regulation, genome stability and development. We show in this study that proper functioning of post-replicative DNA mismatch repair (MMR) in mammalian cells relies on the presence of genomic (m)CpG, as well as on the maintenance DNA methyltransferase Dnmt1 independently of its catalytic activity. More importantly, high efficiency of mammalian MMR surveillance is achieved through a hemi-(m)CpG-Np95(Uhrf1)-Dnmt1 axis, in which the MMR surveillance complex(es) is recruited to post-replicative DNA by Dnmt1, requiring its interactions with MutSα, as well as with Np95 bound at the hemi-methylated CpG sites...
November 25, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27880841/association-between-maternal-mortality-and-cesarean-section-turkey-experience
#15
Cihangir Uzuncakmak, Hasene Ozcam
BACKGROUND: To investigate the cesarean Section (C/S) rates and maternal mortality (MM) causes and its relation between 2002 and 2013. METHODS: Data were gathered from Turkish Ministry of Health and Istanbul Health Administration. The Annual Clinical Reports for 2002-2013 were reviewed and analyzed: C/Ss and maternal deaths in women who gave birth ≥20 weeks between January 1, 2002, and December 31, 2013, in any hospital in Turkey and Istanbul. RESULTS: The major causes of MM were hemorrhage (20%), hypertensive disorders (18...
2016: PloS One
https://www.readbyqxmd.com/read/27879555/safety-and-immunogenicity-of-dtap5-ipv-compared-with-dtap5-plus-ipv-as-the-fifth-dose-in-children-4-to-6-years-of-age
#16
Michael J Smith, Emilia Jordanov, Xiaohua Sheng, Peter H Tsang
BACKGROUND: Immunogenicity and safety of stand-alone diphtheria, tetanus toxoid, 5-component acellular pertussis vaccine adsorbed, inactivated poliovirus (IPV) combination vaccine (DTaP5-IPV) was compared with separate DTaP5 plus IPV vaccines as fifth dose in children 4-6 years of age. METHODS: In this phase III, controlled, multicenter, randomized, open-label study participants were randomized to DTaP5-IPV plus measles/mumps/rubella (MMR) and varicella virus (VZV) vaccines (Group 1; N=324), DTaP5+IPV with MMR and VZV (Group 2; N=327), DTaP5-IPV with/without MMR/VZV (Group 3; N=2419), or DTaP5+IPV with/without MMR/VZV (Group 4; N=302)...
November 22, 2016: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/27878345/low-vaccination-rates-among-patients-with-rheumatoid-arthritis-in-a-german-outpatient-clinic
#17
Marco Krasselt, Jean-Philipp Ivanov, Christoph Baerwald, Olga Seifert
Patients with rheumatoid arthritis (RA) are at an increased risk of acquiring infections due to two reasons: the disease itself and the immunosuppressive therapy. Vaccinations against preventable diseases are therefore of utmost importance for these group of patients. To estimate vaccination frequencies among patients with rheumatoid arthritis, we studied patients in a survey and calculated vaccination rates based on their vaccination documents. Patients have been recruited from our outpatient clinic during one of their routine visits...
November 22, 2016: Rheumatology International
https://www.readbyqxmd.com/read/27873144/truncation-of-the-msh2-c-terminal-60-amino-acids-disrupts-effective-dna-mismatch-repair-and-is-causative-for-lynch-syndrome
#18
Eva Wielders, Elly Delzenne-Goette, Rob Dekker, Martin van der Valk, Hein Te Riele
Missense variants of DNA mismatch repair (MMR) genes pose a problem in clinical genetics as long as they cannot unambiguously be assigned as the cause of Lynch syndrome (LS). To study such variants of uncertain clinical significance, we have developed a functional assay based on direct measurement of MMR activity in mouse embryonic stem cells expressing mutant protein from the endogenous alleles. We have applied this protocol to a specific truncation mutant of MSH2 that removes 60 C-terminal amino acids and has been found in suspected LS families...
November 21, 2016: Familial Cancer
https://www.readbyqxmd.com/read/27872185/the-major-replicative-histone-chaperone-caf-1-suppresses-the-activity-of-the-dna-mismatch-repair-system-in-the-cytotoxic-response-to-a-dna-methylating-agent
#19
Lyudmila Y Kadyrova, Basanta K Dahal, Farid A Kadyrov
The DNA mismatch repair (MMR) system corrects DNA mismatches in the genome. It is also required for the cytotoxic response of O(6)-methylguanine-DNA methyltransferase (MGMT)-deficient mammalian cells and yeast mgt1Δ rad52Δ cells to treatment with Sn1-type methylating agents, which produce cytotoxic O(6)-methylguanine (O(6)-mG) DNA lesions. Specifically, processing of irreparable O(6)-mG-containing mispairs by the MMR system causes DNA degradation, triggering cell death; this process forms the basis of treatments of MGMT-deficient cancers with Sn1-type methylating drugs...
November 21, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27864117/microcystic-elongated-and-fragmented-melf-pattern-invasion-is-mainly-associated-with-isolated-tumor-cell-pattern-metastases-in-figo-grade-i-endometrioid-endometrial-cancer-eec
#20
Mathieu P Pelletier, Vincent Q Trinh, Philippe Stephenson, Anne-Marie Mes-Masson, Vanessa Samouelian, Diane M Provencher, Kurosh Rahimi
While many studies have evaluated the impact of mismatch repair protein loss of expression (MMR LOE) or microcystic, elongated and fragmented (MELF) pattern of myometrial invasion as individual factors in endometrial cancer, we analyzed the combined impact of both. We reviewed every case of FIGO grade 1 endometrioid endometrial cancers (EEC) from our institution, between 2011 and 2015, that had a sentinel lymph node biopsy and/or a lymphadenectomy, and examined the following data: age, myometrial infiltration, MELF infiltration, lymphovascular space invasion and lymph node status...
November 15, 2016: Human Pathology
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