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https://www.readbyqxmd.com/read/28344011/the-epidemiology-pathogenesis-transmission-diagnosis-and-management-of-multidrug-resistant-extensively-drug-resistant-and-incurable-tuberculosis
#1
REVIEW
Keertan Dheda, Tawanda Gumbo, Gary Maartens, Kelly E Dooley, Ruth McNerney, Megan Murray, Jennifer Furin, Edward A Nardell, Leslie London, Erica Lessem, Grant Theron, Paul van Helden, Stefan Niemann, Matthias Merker, David Dowdy, Annelies Van Rie, Gilman K H Siu, Jotam G Pasipanodya, Camilla Rodrigues, Taane G Clark, Frik A Sirgel, Aliasgar Esmail, Hsien-Ho Lin, Sachin R Atre, H Simon Schaaf, Kwok Chiu Chang, Christoph Lange, Payam Nahid, Zarir F Udwadia, C Robert Horsburgh, Gavin J Churchyard, Dick Menzies, Anneke C Hesseling, Eric Nuermberger, Helen McIlleron, Kevin P Fennelly, Eric Goemaere, Ernesto Jaramillo, Marcus Low, Carolina Morán Jara, Nesri Padayatchi, Robin M Warren
Global tuberculosis incidence has declined marginally over the past decade, and tuberculosis remains out of control in several parts of the world including Africa and Asia. Although tuberculosis control has been effective in some regions of the world, these gains are threatened by the increasing burden of multidrug-resistant (MDR) and extensively drug-resistant (XDR) tuberculosis. XDR tuberculosis has evolved in several tuberculosis-endemic countries to drug-incurable or programmatically incurable tuberculosis (totally drug-resistant tuberculosis)...
March 15, 2017: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/28338777/the-chlamydia-suis-genome-exhibits-high-levels-of-diversity-plasticity-and-mobile-antibiotic-resistance-comparative-genomics-of-a-recent-livestock-cohort-shows-influence-of-treatment-regimes
#2
Helena M B Seth-Smith, Sabrina Wanninger, Nathan Bachmann, Hanna Marti, Weihong Qi, Manuela Donati, Antonietta di Francesco, Adam Polkinghorne, Nicole Borel
Chlamydia suis is an endemic pig pathogen, belonging to a fascinating genus of obligate intracellular pathogens. Of particular interest, this is the only chlamydial species to have naturally acquired genes encoding for tetracycline resistance. To date, the distribution and mobility of the Tet-island is not well understood. Our study focused on whole genome sequencing of 29 C. suis isolates from a recent porcine cohort within Switzerland, combined with data from USA tetracycline-resistant isolates. Our findings show that the genome of C...
March 2, 2017: Genome Biology and Evolution
https://www.readbyqxmd.com/read/28337342/first-indian-report-of-incx3-plasmid-carrying-blandm-7-in-escherichia-coli-from-bloodstream-infection-potential-for-rapid-dissemination
#3
N K Devanga Ragupathi, D P Muthuirulandi Sethuvel, R Gajendiran, J L K Daniel, K Walia, B Veeraraghavan
Enterobacteriaceae with blaNDM-7 is only infrequently observed. Self-transmissible plasmids carrying the blaNDM gene increase the dissemination of carbapenem resistance in developing countries. This study investigates the whole genome sequence of a blaNDM-7-positive Escherichia coli. The isolate was an extended-spectrum β-lactamase producer by combined disc diffusion test and carbapenemase producer by CarbaNP method. Sequencing results revealed the isolate as E. coli ST-167 with IncX3 plasmid carrying blaNDM-7 in addition to blaTEM-1 and blaCMY-42 genes...
May 2017: New Microbes and New Infections
https://www.readbyqxmd.com/read/28333330/genomic-landscape-of-extended-spectrum-%C3%AE-lactamase-resistance-in-escherichia-coli-from-an-urban-african-setting
#4
Patrick Musicha, Nicholas A Feasey, Amy K Cain, Teemu Kallonen, Chrispin Chaguza, Chikondi Peno, Margaret Khonga, Sarah Thompson, Katherine J Gray, Alison E Mather, Robert S Heyderman, Dean B Everett, Nicholas R Thomson, Chisomo L Msefula
Objectives: Efforts to treat Escherichia coli infections are increasingly being compromised by the rapid, global spread of antimicrobial resistance (AMR). Whilst AMR in E. coli has been extensively investigated in resource-rich settings, in sub-Saharan Africa molecular patterns of AMR are not well described. In this study, we have begun to explore the population structure and molecular determinants of AMR amongst E. coli isolates from Malawi. Methods: Ninety-four E...
March 5, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333283/rch51-a-multiply-antibiotic-resistant-acinetobacter-baumannii-st103ip-isolate-carries-resistance-genes-in-three-plasmids-including-a-novel-potentially-conjugative-plasmid-carrying-oxa235-in-transposon-tn6252
#5
Mohammad Hamidian, Steven J Nigro, Rebecca M Hartstein, Ruth M Hall
Objectives: To determine the identity and context of genes conferring antibiotic resistance in a sporadic multiply antibiotic-resistant Acinetobacter baumannii recovered at Royal Children's Hospital, Brisbane. Methods: The antibiotic resistance phenotype for 23 antibiotics was determined using disc diffusion or MIC determination. The whole-genome sequence of RCH51 was determined using the Illumina HiSeq platform. Antibiotic resistance determinants were identified using ResFinder...
March 13, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28327996/genome-sequencing-of-the-sweetpotato-whitefly-bemsia-tabaci-med-q
#6
Wen Xie, Chunhai Chen, Zezhong Yang, Litao Guo, Xin Yang, Dan Wang, Ming Chen, Jinqun Huang, Yanan Wen, Yang Zeng, Yating Liu, Jixing Xia, Lixia Tian, Hongying Cui, Qingjun Wu, Shaoli Wang, Baoyun Xu, Xianchun Li, Xinqiu Tan, Murad Ghanim, Baoli Qiu, Huipeng Pan, Dong Chu, Helene Delatte, M N Maruthi, Feng Ge, Xueping Zhou, Xiaowei Wang, Fanghao Wan, Yuzhou Du, Chen Luo, Fengming Yan, Evan L Preisser, Xiaoguo Jiao, Brad S Coates, Jinyang Zhao, Qiang Gao, Jinquan Xia, Ye Yin, Yong Liu, Judith K Brown, Xuguo Joe Zhou, Youjun Zhang
Background: The sweetpotato whitefly Bemisia tabaci is a highly destructive agricultural and ornamental crop pest. It damages host plants through both phloem feeding and vectoring plant pathogens. Introductions of B. tabaci are difficult to quarantine and eradicate because of its high reproductive rates, broad host plant range, and insecticide resistance. Findings: A total of 791 Gb of raw DNA sequence from whole genome shotgun sequencing, and 13 BAC pooling libraries were generated by Illumina sequencing using different combinations of mate-pair and pair-end libraries...
March 15, 2017: GigaScience
https://www.readbyqxmd.com/read/28327926/genomic-characterisation-of-her2-positive-breast-cancer-and-response-to-neoadjuvant-trastuzumab-and-chemotherapy-results-from-the-acosog-z1041-alliance-trial
#7
R Lesurf, O L Griffith, M Griffith, J Hundal, L Trani, M A Watson, R Aft, M J Ellis, D Ota, V J Suman, F Meric-Bernstam, A M Leitch, J C Boughey, G Unzeitig, A U Buzdar, K K Hunt, E R Mardis
Background: HER2 ( ERBB2 ) gene amplification and its corresponding overexpression are present in 15-30% of invasive breast cancers. While HER2-targeted agents are effective treatments, resistance remains a major cause of death. The American College of Surgeons Oncology Group Z1041 trial (NCT00513292) was designed to compare the pathologic complete response (pCR) rate of distinct regimens of neoadjuvant chemotherapy and trastuzumab, but ultimately identified no difference [1]. Patients and methods: In supplement to tissues from 37 Z1041 cases, 11 similarly treated cases were obtained from a single institution study (NCT00353483)...
February 21, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28323406/affinity-selection-mass-spectrometry-identifies-a-novel-antibacterial-rna-polymerase-inhibitor
#8
Scott S Walker, David Degen, Elliott Nickbarg, Donna Carr, Aileen Soriano, Mihir Baran Mandal, Ronald E Painter, Payal R Sheth, Li Xiao, Xinwei Sher, Nicholas Murgolo, Jing Su, David B Olsen, Richard H Ebright, Katherine Young
The growing prevalence of drug-resistant Gram-negative bacteria is a significant global threat to human health. Rifampicin, an RNA polymerase-targeting agent, is an important part of the antibacterial armamentarium; however the emergence of resistance requires that it be used against only certain infections and usually in combination with another antibiotic. While rifampicin has significant clinical limitations, it does show that bacterial RNA polymerase can be an effective target for antibacterial intervention...
March 21, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28321207/whole-genome-sequencing-for-surveillance-of-antimicrobial-resistance-in-actinobacillus-pleuropneumoniae
#9
Janine T Bossé, Yanwen Li, Jon Rogers, Roberto Fernandez Crespo, Yinghui Li, Roy R Chaudhuri, Matthew T G Holden, Duncan J Maskell, Alexander W Tucker, Brendan W Wren, Andrew N Rycroft, Paul R Langford
The aim of this study was to evaluate the correlation between antimicrobial resistance (AMR) profiles of 96 clinical isolates of Actinobacillus pleuropneumoniae, an important porcine respiratory pathogen, and the identification of AMR genes in whole genome sequence (wgs) data. Susceptibility of the isolates to nine antimicrobial agents (ampicillin, enrofloxacin, erythromycin, florfenicol, sulfisoxazole, tetracycline, tilmicosin, trimethoprim, and tylosin) was determined by agar dilution susceptibility test...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28319063/compromised-brca1-palb2-interaction-is-associated-with-breast-cancer-risk
#10
T K Foo, M Tischkowitz, S Simhadri, T Boshari, N Zayed, K A Burke, S H Berman, P Blecua, N Riaz, Y Huo, Y C Ding, S L Neuhausen, B Weigelt, J S Reis-Filho, W D Foulkes, B Xia
The major breast cancer suppressor proteins BRCA1 and BRCA2 play essential roles in homologous recombination (HR)-mediated DNA repair, which is thought to be critical for tumor suppression. The two BRCA proteins are linked by a third tumor suppressor, PALB2, in the HR pathway. While truncating mutations in these genes are generally pathogenic, interpretation of missense variants remains a challenge. To date, patient-derived missense variants that disrupt PALB2 binding have been identified in BRCA1 and BRCA2; however, there has not been sufficient evidence to prove their pathogenicity in humans, and no variants in PALB2 that disrupt either its BRCA1 or BRCA2 binding have been reported...
March 20, 2017: Oncogene
https://www.readbyqxmd.com/read/28303388/the-impact-of-antibiotic-stewardship-programs-in-combating-quinolone-resistance-a-systematic-review-and-recommendations-for-more-efficient-interventions
#11
REVIEW
Vasiliki Pitiriga, Georgia Vrioni, George Saroglou, Athanasios Tsakris
Quinolones are among the most commonly prescribed antibiotics worldwide. A clear relationship has been demonstrated between excessive quinolone use and the steady increase in the incidence of quinolone-resistant bacterial pathogens, both in hospital and community sites. In addition, exposure to quinolones has been associated with colonization and infection with healthcare-associated pathogens such as methicillin-resistant Staphylococcus aureus and Clostridium difficile in hospitalized patients. Therefore, the management of quinolone prescribing in hospitals through antibiotic stewardship programs is considered crucial...
March 16, 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28302788/high-quality-genome-sequence-of-an-escherichia-coli-o157-strain-carrying-an-mcr-1-resistance-gene-isolated-from-a-patient-in-the-united-states
#12
Rebecca L Lindsey, Dhwani Batra, Lori Rowe, Vladimir N Loparev, Devon Stripling, Lisley Garcia-Toledo, Kristen Knipe, Phalasy Juieng, Mili Sheth, Haley Martin, Alison Laufer Halpin
Enterobacteriaceae carrying plasmid-mediated colistin resistance have been found around the world. We report here the high-quality whole-genome sequence of an Escherichia coli O157:H48 isolate (2016C-3936C1) from Connecticut that carried the mcr-1 resistance gene on an IncX4-type plasmid.
March 16, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28301471/genomic-confirmation-of-vancomycin-resistant-enterococcus-transmission-from-deceased-donor-to-liver-transplant-recipient
#13
Ali Bashir, Oliver Attie, Mitchell Sullivan, Robert Sebra, Kavindra V Singh, Deena Altman, Theodore Pak, Jayeeta Dutta, Kieran Chacko, Elizabeth Webster, Martha Lewis, Camille Hamula, Kristin W Delli Carpini, Barbara E Murray, Andrew Kasarskis, Harm van Bakel, Shirish Huprikar
In a liver transplant recipient with vancomycin-resistant Enterococcus (VRE) surgical site and bloodstream infection, a combination of pulsed-field gel electrophoresis, multilocus sequence typing, and whole genome sequencing identified that donor and recipient VRE isolates were highly similar when compared to time-matched hospital isolates. Comparison of de novo assembled isolate genomes was highly suggestive of transplant transmission rather than hospital-acquired transmission and also identified subtle internal rearrangements between donor and recipient missed by other genomic approaches...
2017: PloS One
https://www.readbyqxmd.com/read/28298449/real-time-sequencing-of-mycobacterium-tuberculosis-are-we-there-yet
#14
Robyn S Lee, Madhukar Pai
Whole genome sequencing has taken a leading role in epidemiologic studies of tuberculosis, but thus far, the real-time, clinical utility has been low, in part due to the requirement for culture. In Votintseva et al (J Clin Microbiol https://doi.org/10.1128/JCM.02483-16), authors present a new method for extracting Mycobacterium tuberculosis DNA directly from smear-positive respiratory samples, generating drug resistance predictions and phylogenetic trees in 44 hours using the Illumina MiSeq. Authors also illustrate the potential for < 24 hour turnaround time from DNA extraction to clinically-relevant results, with Illumina MiniSeq and Oxford Nanopore Technologies' MinION...
March 15, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28292787/extensive-copy-number-variation-in-fermentation-related-genes-among-saccharomyces-cerevisiae-wine-strains
#15
Jacob Steenwyk, Antonis Rokas
Due to the importance of Saccharomyces cerevisiae in wine-making, the genomic variation of wine yeast strains has been extensively studied. One of the major insights stemming from these studies is that wine yeast strains harbor low levels of genetic diversity in the form of single nucleotide polymorphisms (SNPs). Genomic structural variants, such as copy number (CN) variants, are another major type of variation segregating in natural populations. To test whether genetic diversity in CN variation is also low across wine yeast strains, we examined genome-wide levels of CN variation in 132 whole-genome sequences of S...
March 14, 2017: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/28280021/whole-genome-shotgun-sequencing-of-cephalosporin-resistant-salmonella-enterica-serovar-typhi
#16
Camilla Rodrigues, Arti Kapil, Anita Sharma, Naveen Kumar Devanga Ragupathi, Francis Yesurajan Inbanathan, Balaji Veeraraghavan, Gagandeep Kang
Typhoid is one of the leading causes of mortality in developing countries. Here, we report the draft genome sequences of four Salmonella enterica serovar Typhi strains isolated from bloodstream infections in a tertiary care hospital. The sequence data indicate genomes of ~4.5 Mb for all isolates, with one plasmid in each.
March 9, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28275816/genetic-mapping-and-haplotype-analysis-of-a-locus-for-quantitative-resistance-to-fusarium-graminearum-in-soybean-accession-pi-567516c
#17
Peng Cheng, Cassidy R Gedling, Gunvant Patil, Tri D Vuong, J Grover Shannon, Anne E Dorrance, Henry T Nguyen
A major novel quantitative disease resistance locus, qRfg_Gm06, for Fusarium graminearum was genetically mapped to chromosome 6. Genomic-assisted haplotype analysis within this region identified three putative candidate genes. Fusarium graminearum causes seed, root rot, and seedling damping-off in soybean which contributes to reduced stands and yield. A cultivar Magellan and PI 567516C were identified with low and high levels of partial resistance to F. graminearum, respectively. Quantitative disease resistance loci (QDRL) were mapped with 241 F7:8 recombinant inbred lines (RILs) derived from a cross of Magellan × PI 567516C...
March 8, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28275074/same-day-diagnostic-and-surveillance-data-for-tuberculosis-via-whole-genome-sequencing-of-direct-respiratory-samples
#18
Antonina A Votintseva, Phelim Bradley, Louise Pankhurst, Carlos Del Ojo Elias, Matthew Loose, Kayzad Nilgiriwala, Anirvan Chatterjee, E Grace Smith, Nicolas Sanderson, Timothy M Walker, Marcus R Morgan, David H Wyllie, A Sarah Walker, Tim E A Peto, Derrick W Crook, Zamin Iqbal
Routine full characterization of Mycobacterium tuberculosis (TB) is culture-based, taking many weeks. Whole-genome sequencing (WGS) can generate antibiotic susceptibility profiles to inform treatment, augmented with strain information for global surveillance; such data could be transformative if provided at or near point of care.We demonstrate a low-cost DNA extraction method for TB WGS direct from patient samples. We initially evaluated the method using the Illumina MiSeq sequencer (40 smear-positive respiratory samples, obtained after routine clinical testing, and 27 matched liquid cultures)...
March 8, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28273168/within-host-whole-genome-analysis-of-an-antibiotic-resistant-pseudomonas-aeruginosa-strain-sub-type-in-cystic-fibrosis
#19
Laura J Sherrard, Anna S Tai, Bryan A Wee, Kay A Ramsay, Timothy J Kidd, Nouri L Ben Zakour, David M Whiley, Scott A Beatson, Scott C Bell
A Pseudomonas aeruginosa AUST-02 strain sub-type (M3L7) has been identified in Australia, infects the lungs of some people with cystic fibrosis and is associated with antibiotic resistance. Multiple clonal lineages may emerge during treatment with mutations in chromosomally encoded antibiotic resistance genes commonly observed. Here we describe the within-host diversity and antibiotic resistance of M3L7 during and after antibiotic treatment of an acute pulmonary exacerbation using whole genome sequencing and show both variation and shared mutations in important genes...
2017: PloS One
https://www.readbyqxmd.com/read/28270156/a-rapid-virus-induced-gene-silencing-vigs-method-for-assessing-resistance-and-susceptibility-to-cassava-mosaic-disease
#20
Getu Beyene, Raj Deepika Chauhan, Nigel J Taylor
BACKGROUND: Cassava mosaic disease (CMD) is a major constraint to cassava production in sub-Saharan Africa. Under field conditions, evaluation for resistance to CMD takes 12-18 months, often conducted across multiple years and locations under pressure from whitefly-mediated transmission. Under greenhouse or laboratory settings, evaluation for resistance or susceptibility to CMD involves transmission of the causal viruses from an infected source to healthy plants through grafting, or by using Agrobacterium-mediated or biolistic delivery of infectious clones...
March 7, 2017: Virology Journal
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