keyword
MENU ▼
Read by QxMD icon Read
search

whole genome sequence resistant

keyword
https://www.readbyqxmd.com/read/28446174/a-scalable-metabolite-supplementation-strategy-against-antibiotic-resistant-pathogen-chromobacterium-violaceum-induced-by-nad-nadh-imbalance
#1
Deepanwita Banerjee, Dharmeshkumar Parmar, Nivedita Bhattacharya, Avinash D Ghanate, Venkateswarlu Panchagnula, Anu Raghunathan
BACKGROUND: The leading edge of the global problem of antibiotic resistance necessitates novel therapeutic strategies. This study develops a novel systems biology driven approach for killing antibiotic resistant pathogens using benign metabolites. RESULTS: Controlled laboratory evolutions established chloramphenicol and streptomycin resistant pathogens of Chromobacterium. These resistant pathogens showed higher growth rates and required higher lethal doses of antibiotic...
April 26, 2017: BMC Systems Biology
https://www.readbyqxmd.com/read/28446153/acceleration-and-suppression-of-resistance-development-by-antibiotic-combinations
#2
Shingo Suzuki, Takaaki Horinouchi, Chikara Furusawa
BACKGROUND: The emergence and spread of antibiotic resistance in bacteria is becoming a global public health problem. Combination therapy, i.e., the simultaneous use of multiple antibiotics, is used for long-term treatment to suppress the emergence of resistant strains. However, the effect of the combinatorial use of multiple drugs on the development of resistance remains elusive, especially in a quantitative assessment. RESULTS: To understand the evolutionary dynamics under combination therapy, we performed laboratory evolution of Escherichia coli under simultaneous addition of two-drug combinations...
April 26, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28440802/genetic-hurdles-limit-the-arms-race-between-prochlorococcus-and-the-t7-like-podoviruses-infecting-them
#3
Daniel A Schwartz, Debbie Lindell
Phages and hosts coexist in nature with a high degree of population diversity. This is often explained through coevolutionary models, such as the arms race or density-dependent fluctuating selection, which differ in assumptions regarding the emergence of phage mutants that overcome host resistance. Previously, resistance in the abundant marine cyanobacterium, Prochlorococcus, was found to occur frequently. However, little is known about the ability of phages to overcome this resistance. Here we report that, in some cases, T7-like cyanophage mutants emerge to infect resistant Prochlorococcus strains...
April 25, 2017: ISME Journal
https://www.readbyqxmd.com/read/28438941/new-macrolide-lincosamide-streptogramin-b-resistance-gene-erm-48-on-the-novel-plasmid-pjw2311-in-staphylococcus-xylosus
#4
Juliette R K Wipf, Matthew C Riley, Stephen A Kania, David A Bemis, Sabrina Andreis, Sybille Schwendener, Vincent Perreten
Whole-genome sequencing of Staphylococcus xylosus strain JW2311 from bovine mastitis milk identified the novel 49.3 kb macrolide-lincosamide-streptogramin B (MLSB) resistance plasmid pJW2311. It contained the macrolide resistance gene mph(C), the macrolide-streptogramin B resistance gene msr(A), and the new MLSB resistance gene erm (48) and could be transformed into S. aureus by electroporation. Functionality of erm (48) was demonstrated by cloning and expression in S. aureus.
April 24, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28438939/emergence-and-evolution-of-multidrug-resistant-klebsiella-pneumoniae-with-both-blakpc-and-blactx-m-integrated-in-chromosome
#5
Weihua Huang, Guiqing Wang, Robert Sebra, Jian Zhuge, Changhong Yin, Maria E Aguero-Rosenfeld, Audrey N Schuetz, Nevenka Dimitrova, John T Fallon
The extended-spectrum β-lactamase (ESBL)- and Klebsiella pneumoniae carbapenemase (KPC)-producing Enterobacteriaceae represent serious and urgent threats to public health. In a retrospective study of multidrug-resistant K. pneumoniae, we identified three clinical isolates, CN1, CR14 and NY9, carrying both blaCTX-M and blaKPC genes. The complete genomes of these three K. pneumoniae isolates were de novo assembled by using both short- and long-read whole-genome sequencing. In CR14 and NY9, blaCTX-M and blaKPC were carried on two different plasmids...
April 24, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28438568/a-novel-mutation-in-pmrb-mediates-colistin-resistance-during-therapy-of-acinetobacter-baumannii
#6
Elias Dahdouh, Rosa Gómez-Gil, Sonia Sanz, Bruno González-Zorn, Ziad Daoud, Jesús Mingorance, Monica Suárez
Acinetobacter baumannii is a highly versatile nosocomial pathogen. Multidrug resistance among A. baumannii isolates led to the use of colistin, subsequently giving rise to colistin-resistant strains. In this study, the genetic and phenotypic profiles of two colistin-resistant A. baumannii isolates were investigated. Two A. baumannii isolates were obtained from Patient 1 (C071 and C440) and three isolates were obtained from Patient 2 (C080, C314 and C428). Susceptibility profiles were determined by VITEK(®)2 and Etest...
April 21, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28436089/a-novel-dense-granule-protein-gra41-regulates-timing-of-egress-and-calcium-sensitivity-in-toxoplasma-gondii
#7
Kaice A LaFavers, Karla M Márquez-Nogueras, Isabelle Coppens, Silvia N J Moreno, Gustavo Arrizabalaga
Toxoplasma gondii is an obligate intracellular apicomplexan parasite with high seroprevalence in humans. Repeated lytic cycles of invasion, replication and egress drive both the propagation and the virulence of this parasite. Key steps in this cycle, including invasion and egress, depend on tightly regulated calcium fluxes and, while many of the calcium-dependent effectors have been identified, the factors that detect and regulate the calcium fluxes are mostly unknown. To address this knowledge gap, we used a forward genetic approach to isolate mutants resistant to extracellular exposure to the calcium ionophore A23187...
April 24, 2017: Cellular Microbiology
https://www.readbyqxmd.com/read/28432093/diversity-of-integrative-and-conjugative-elements-of-streptococcus-salivarius-and-their-intra-and-interspecies-transfer
#8
Narimane Dahmane, Virginie Libante, Florence Charron-Bourgoin, Eric Guédon, Gérard Guédon, Nathalie Leblond-Bourget, Sophie Payot
Integrative and Conjugative Elements (ICEs) are widespread chromosomal mobile genetic elements, which can transfer autonomously by conjugation in bacteria. Thirteen ICEs with a conjugation module closely related to that of ICESt3 of Streptococcus thermophilus were characterized in Streptococcus salivarius by whole genome sequencing. Sequence comparison highlighted ICE evolution by shuffling of 3 different integration/excision modules (for integration in the 3' end of fda, rpsI or rpmG genes) with the conjugation module of the ICESt3 subfamily...
April 21, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28425484/mycobacterium-tuberculosis-resistance-prediction-and-lineage-classification-from-genome-sequencing-comparison-of-automated-analysis-tools
#9
Viola Schleusener, Claudio U Köser, Patrick Beckert, Stefan Niemann, Silke Feuerriegel
Whole-genome sequencing (WGS) has the potential to accelerate drug-susceptibility testing (DST) to design appropriate regimens for drug-resistant tuberculosis (TB). Several recently developed automated software tools promise to standardize the analysis and interpretation of WGS data. We assessed five tools (CASTB, KvarQ, Mykrobe Predictor TB, PhyResSE, and TBProfiler) with regards to DST and phylogenetic lineage classification, which we compared with phenotypic DST, Sanger sequencing, and traditional typing results for a collection of 91 strains...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28424085/the-within-host-population-dynamics-of-mycobacterium-tuberculosis-vary-with-treatment-efficacy
#10
Andrej Trauner, Qingyun Liu, Laura E Via, Xin Liu, Xianglin Ruan, Lili Liang, Huimin Shi, Ying Chen, Ziling Wang, Ruixia Liang, Wei Zhang, Wang Wei, Jingcai Gao, Gang Sun, Daniela Brites, Kathleen England, Guolong Zhang, Sebastien Gagneux, Clifton E Barry, Qian Gao
BACKGROUND: Combination therapy is one of the most effective tools for limiting the emergence of drug resistance in pathogens. Despite the widespread adoption of combination therapy across diseases, drug resistance rates continue to rise, leading to failing treatment regimens. The mechanisms underlying treatment failure are well studied, but the processes governing successful combination therapy are poorly understood. We address this question by studying the population dynamics of Mycobacterium tuberculosis within tuberculosis patients undergoing treatment with different combinations of antibiotics...
April 19, 2017: Genome Biology
https://www.readbyqxmd.com/read/28419202/genomic-characterization-of-usa300-mrsa-to-evaluate-intraclass-transmission-and-recurrence-of-ssti-among-high-risk-military-trainees
#11
Eugene V Millar, Gregory K Rice, Emad M Elassal, Carey D Schlett, Jason W Bennett, Cassie L Redden, Deepika Mor, Natasha N Law, David R Tribble, Theron Hamilton, Michael W Ellis, Kimberly A Bishop-Lilly
Background.: Military trainees are at increased risk for methicillin-resistant Staphylococcus aureus (MRSA) skin and soft tissue infection (SSTI). Whole genome sequencing (WGS) can refine our understanding of MRSA transmission and microevolution in congregate settings. Methods.: We conducted a prospective case-control study of SSTI among US Army Infantry trainees at Fort Benning, GA from July 2012-December 2014. We identified clusters of USA300 MRSA SSTI within select training classes and performed WGS on clinical isolates...
April 17, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28416542/high-resolution-melting-analysis-for-the-rapid-detection-of-sequence-type-131-escherichia-coli
#12
Lucas B Harrison, Nancy D Hanson
IntroductionE. coli belonging to sequence type 131 clonal complex (ST131) have been associated with the global distribution of fluoroquinolone and β-lactam resistance. Whole genome sequencing and multi-locus sequence typing identify sequence type but are expensive when evaluating large numbers of samples. This study was designed to develop a cost-effective screening tool using high resolution melting (HRM) analysis to differentiate ST131 from non-ST-131 E. coli in large sample populations in the absence of sequence analysis...
April 17, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28413162/whole-genome-sequence-of-the-metastatic-pc3-and-lncap-human-prostate-cancer-cell-lines
#13
Inge Seim, Penny L Jeffery, Patrick B Thomas, Colleen C Nelson, Lisa K Chopin
The bone metastasis-derived PC3 and the lymph node metastasis-derived LNCaP prostate cancer cell lines are widely studied, having been described in thousands of publications over the last four decades. Here, we report short-read whole-genome sequencing and de novo assembly of PC3 (ATCC CRL-1435) and LNCaP (clone FGC; ATCC CRL-1740) at ~70X coverage. A known homozygous mutation in TP53 and homozygous loss of PTEN were robustly identified in the PC3 cell line, whereas the LNCaP cell line exhibited a larger number of putative inactivating somatic point and indel mutations (and in particular loss of stop codon events)...
April 16, 2017: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/28411226/the-current-state-of-macrolide-resistance-in-campylobacter-a-review-of-trends-and-impacts-of-resistance-mechanisms
#14
Hannah Bolinger, Sophia Kathariou
Campylobacter spp., especially Campylobacter jejuni and C. coli, are leading bacterial foodborne pathogens worldwide. In the United States, an estimated 0.8 million cases of campylobacteriosis occur annually, mostly involving C. jejuni. Campylobacteriosis is generally self-limiting but in severe cases treatment with antibiotics may be mandated. Increasing incidence of fluoroquinolone resistance in Campylobacter has rendered macrolides like erythromycin and azithromycin the drugs of choice for human campylobacteriosis...
April 14, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28408749/high-prevalence-of-tp53-mutations-is-associated-with-poor-survival-and-an-emt-signature-in-gliosarcoma-patients
#15
Sung-Yup Cho, Changho Park, Deukchae Na, Jee Yun Han, Jieun Lee, Ok-Kyoung Park, Chengsheng Zhang, Chang Ohk Sung, Hyo Eun Moon, Yona Kim, Jeong Hoon Kim, Jong Jae Kim, Shin Kwang Khang, Do-Hyun Nam, Jung Won Choi, Yeon-Lim Suh, Dong Gyu Kim, Sung Hye Park, Hyewon Youn, Kyuson Yun, Jong-Il Kim, Charles Lee, Sun Ha Paek, Hansoo Park
Gliosarcoma (GS) is a rare variant (2%) of glioblastoma (GBM) that poses clinical genomic challenges because of its poor prognosis and limited genomic information. To gain a comprehensive view of the genomic alterations in GS and to understand the molecular etiology of GS, we applied whole-exome sequencing analyses for 28 GS cases (6 blood-matched fresh-frozen tissues for the discovery set, 22 formalin-fixed paraffin-embedded tissues for the validation set) and copy-number variation microarrays for 5 blood-matched fresh-frozen tissues...
April 14, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28407967/molecular-characterization-of-an-unauthorized-genetically-modified-bacillus-subtilis-production-strain-identified-in-a-vitamin-b2-feed-additive
#16
Valentina Paracchini, Mauro Petrillo, Ralf Reiting, Alexandre Angers-Loustau, Daniela Wahler, Andrea Stolz, Birgit Schönig, Anastasia Matthies, Joachim Bendiek, Dominik M Meinel, Sven Pecoraro, Ulrich Busch, Alex Patak, Joachim Kreysa, Lutz Grohmann
Many food and feed additives result from fermentation of genetically modified (GM) microorganisms. For vitamin B2 (riboflavin), GM Bacillus subtilis production strains have been developed and are often used. The presence of neither the GM strain nor its recombinant DNA is allowed for fermentation products placed on the EU market as food or feed additive. A vitamin B2 product (80% feed grade) imported from China was analysed. Viable B. subtilis cells were identified and DNAs of two bacterial isolates (LHL and LGL) were subjected to three whole genome sequencing (WGS) runs with different devices (MiSeq, 454 or HiSeq system)...
September 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28404681/non-pnca-gene-mutated-but-pyrazinamide-resistant-m-tuberculosis-why-is-that
#17
Jim Werngren, Erik Alm, Mikael Mansjö
Pyrazinamide (PZA) is a key component for the effective treatment of drug susceptible and PZA-susceptible MDR (MDR(PZA-S)) tuberculosis. pncA gene mutations are usually detected in a clear majority (>90%) of the PZA resistant strains but obviously not in all. Rapid and reliable PZA DST is critical whenever PZA will be used in the regimen, not least for the treatment of MDR(PZA-S) TB. In this study, we selected 26 PZA resistant isolates reported to carry a wildtype pncA gene. To confirm resistance, susceptibility testing was repeated to 100 mg/L and 200 mg/L PZA for all the 26 isolates and Sanger sequencing was repeated on the 18 isolates that remained PZA resistant...
April 12, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28404677/comparison-of-two-whole-genome-sequencing-methods-for-analysis-of-three-methicillin-resistant-staphylococcus-aureus-outbreaks
#18
Scott A Cunningham, Nicholas Chia, Patricio R Jeraldo, Daniel J Quest, Julie A Johnson, Dave J Boxrud, Angela J Taylor, Jun Chen, Gregory D Jenkins, Travis M Drucker, Heidi Nelson, Robin Patel
Whole genome sequencing (WGS) can provide excellent resolution in global and local epidemiological investigations of Staphylococcus aureus outbreaks. A variety of sequencing approaches and analytical tools have been used; it is not clear which is ideal. We compared two WGS strategies and two analytical approaches to the standard method of SmaI restriction digestion pulsed-field gel electrophoresis (PFGE) for typing S. aureus Forty-two S. aureus isolates from three outbreaks and 12 reference isolates were studied...
April 12, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28401891/genome-assembly-with-in-vitro-proximity-ligation-data-and-whole-genome-triplication-in-lettuce
#19
Sebastian Reyes-Chin-Wo, Zhiwen Wang, Xinhua Yang, Alexander Kozik, Siwaret Arikit, Chi Song, Liangfeng Xia, Lutz Froenicke, Dean O Lavelle, María-José Truco, Rui Xia, Shilin Zhu, Chunyan Xu, Huaqin Xu, Xun Xu, Kyle Cox, Ian Korf, Blake C Meyers, Richard W Michelmore
Lettuce (Lactuca sativa) is a major crop and a member of the large, highly successful Compositae family of flowering plants. Here we present a reference assembly for the species and family. This was generated using whole-genome shotgun Illumina reads plus in vitro proximity ligation data to create large superscaffolds; it was validated genetically and superscaffolds were oriented in genetic bins ordered along nine chromosomal pseudomolecules. We identify several genomic features that may have contributed to the success of the family, including genes encoding Cycloidea-like transcription factors, kinases, enzymes involved in rubber biosynthesis and disease resistance proteins that are expanded in the genome...
April 12, 2017: Nature Communications
https://www.readbyqxmd.com/read/28399968/tuberculosis-resistance-conferring-mutations-with-fitness-cost-among-hiv-positive-individuals-in-uganda
#20
W Ssengooba, D Lukoye, C J Meehan, D P Kateete, M L Joloba, B C de Jong, F G Cobelens, F van Leth
BACKGROUND: Multidrug-resistant tuberculosis (MDR-TB) is considered to be less transmissible due to the fitness cost associated with drug resistance-conferring mutations in essential genes. OBJECTIVE: To test the hypothesis that TB drug resistance-conferring mutations with fitness cost are more frequent among human immunodeficiency virus (HIV) positive than among HIV-negative patients. DESIGN: We analysed all strains from the two TB drug resistance surveys conducted in Uganda between 2008 and 2011...
May 1, 2017: International Journal of Tuberculosis and Lung Disease
keyword
keyword
97999
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"