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Multiresistence

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https://www.readbyqxmd.com/read/28645197/pht%C3%AE-promoted-mobilization-of-non-conjugative-resistance-plasmids-from-enterococcus-faecium-to-enterococcus-faecalis
#1
Laura Di Sante, Gianluca Morroni, Andrea Brenciani, Carla Vignaroli, Alberto Antonelli, Marco Maria D'Andrea, Andrea Di Cesare, Eleonora Giovanetti, Pietro E Varaldo, Gian Maria Rossolini, Francesca Biavasco
Objectives: : To analyse the recombination events associated with conjugal mobilization of two multiresistance plasmids, pRUM 17i48 and pLAG (formerly named pDO1-like), from Enterococcus faecium 17i48 to Enterococcus faecalis JH2-2. Methods: : The plasmids from two E. faecalis transconjugants (JH-4T, tetracycline resistant, and JH-8E, erythromycin resistant) and from the E. faecium donor (also carrying a pHTβ-like conjugative plasmid, named pHTβ 17i48 ) were investigated by several methods, including PCR mapping and sequencing, S1-PFGE followed by Southern blotting and hybridization, and WGS...
June 22, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28644839/genomic-introgression-mapping-of-field-derived-multiple-anthelmintic-resistance-in-teladorsagia-circumcincta
#2
Young-Jun Choi, Stewart A Bisset, Stephen R Doyle, Kymberlie Hallsworth-Pepin, John Martin, Warwick N Grant, Makedonka Mitreva
Preventive chemotherapy has long been practiced against nematode parasites of livestock, leading to widespread drug resistance, and is increasingly being adopted for eradication of human parasitic nematodes even though it is similarly likely to lead to drug resistance. Given that the genetic architecture of resistance is poorly understood for any nematode, we have analyzed multidrug resistant Teladorsagia circumcincta, a major parasite of sheep, as a model for analysis of resistance selection. We introgressed a field-derived multiresistant genotype into a partially inbred susceptible genetic background (through repeated backcrossing and drug selection) and performed genome-wide scans in the backcross progeny and drug-selected F2 populations to identify the major genes responsible for the multidrug resistance...
June 23, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28641352/-do-general-surgeons-feel-adequately-prepared-for-the-complex-questions-associated-with-the-handling-of-multi-resistant-pathogens-results-of-the-mr2-survey
#3
Matthias May, Philipp J Spachmann, Steffen Lebentrau, Harald Schumacher, Christian Gilfrich, Hans-Martin Fritsche, Malte Vetterlein, Sabine Brookman-May, Martin Schostak, Florian M Wagenlehner, Maximilian Burger, Alexander Novotny, Robert Obermaier
Background At the present time, there is no evidence available as to the knowledge of general surgeons regarding multi-resistant pathogens (MRP) and the rational use of antibiotic medication (antibiotic stewardship/ABS) compared with physicians from other disciplines. Methods As part of the MR2 survey (Multiinstitutional Reconnaissance of practice with MultiResistant bacteria - a survey focussing on German hospitals), a questionnaire comprising 4 + 35 items was distributed to urologists, internists, gynaecologists and general surgeons in 18 hospitals...
June 2017: Zentralblatt Für Chirurgie
https://www.readbyqxmd.com/read/28640870/dominance-of-community-associated-methicillin-resistant-staphylococcus-aureus-clones-in-a-maternity-hospital
#4
Edet E Udo, Noura Al-Sweih
BACKGROUND: Methicillin- resistant Staphylococcus aureus (MRSA) is a major pathogen causing healthcare- and community- acquired infections. The purpose of this study was to characterize MRSA isolated at the Maternity Hospital between 2006 and 2011 for their genetic relatedness. MATERIALS AND METHODS: The MRSA isolates were investigated using a combination of antibiogram, Staphylococcal chromosome cassette mec (SCCmec) and spa typing to determine their relatedness to MRSA isolated in other Kuwait hospitals...
2017: PloS One
https://www.readbyqxmd.com/read/28637339/emergence-of-ceftazidime-avibactam-non-susceptibility-in-an-mdr-klebsiella-pneumoniae-isolate
#5
Anna Both, Henning Büttner, Jiabin Huang, Markus Perbandt, Cristina Belmar Campos, Martin Christner, Florian P Maurer, Stefan Kluge, Christina König, Martin Aepfelbacher, Dominic Wichmann, Holger Rohde
Background: Avibactam is a novel broad-range β-lactamase inhibitor active against Ambler class A (including ESBL and KPC) and some Ambler class C and D (e.g. OXA-48) enzymes. We here report on the emergence of ceftazidime/avibactam resistance in clinical, multiresistant, OXA-48 and CTX-M-14-producing Klebsiella pneumoniae isolate DT12 during ceftazidime/avibactam treatment. Methods and results: Comparative whole-genome sequence analysis identified two SNPs in the CTX-M-14-encoding gene leading to two amino acid changes (P170S and T264I)...
June 16, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28637307/sparing-carbapenem-usage
#6
A Peter R Wilson
Background: Carbapenem resistance in Gram-negative bacteria is increasing in many countries and use of carbapenems and antibiotics to which resistance is linked should be reduced to slow its emergence. There are no directly equivalent antibiotics and the alternatives are less well supported by clinical trials. The few new agents are expensive. Objectives: To provide guidance on strategies to reduce carbapenem usage. Methods: A literature review was performed as described in the BSAC/HIS/BIA/IPS Joint Working Party on Multiresistant Gram-negative Infection Report...
June 15, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28628280/combination-antimicrobial-susceptibility-testing-for-acute-exacerbations-in-chronic-infection-of-pseudomonas-aeruginosa-in-cystic-fibrosis
#7
REVIEW
Valerie Waters, Felix Ratjen
BACKGROUND: Antibiotic therapy for acute pulmonary exacerbations in people with cystic fibrosis is usually chosen based on the results of antimicrobial susceptibility testing of individual drugs. Combination antimicrobial susceptibility testing assesses the efficacy of drug combinations including two or three antibiotics in vitro and can often demonstrate antimicrobial efficacy against bacterial isolates even when individual antibiotics have little or no effect. Therefore, choosing antibiotics based on combination antimicrobial susceptibility testing could potentially improve response to treatment in people with cystic fibrosis with acute exacerbations...
June 19, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28626736/enterococcus-spp-and-s-aureus-colonization-in-neutropenic-febrile-children-with-cancer
#8
Julia R Spinardi, Rodrigo Berea, Patricia A Orioli, Marina M Gabriele, Alessandra Navarini, Marina T Marques, Milton N Neto, Marcelo J Mimica
INTRODUCTION: Febrile neutropenia is one of the most serious treatment-related complications in cancer patients. Susceptible to rapidly progressing infections, which result in prolonged hospitalization and use of broad-spectrum antibiotics, neutropenic patients are subject to colonization by multiresistant agents, which enhances the risk of infections. METHODS: In this study we included samples collected with nasal, oropharyngeal and anal swabs from hospitalized children with febrile neutropenia following chemotherapy, between March 2014 and 2015, aiming to elucidate colonization by S...
June 2017: Germs
https://www.readbyqxmd.com/read/28606485/a-10-year-surveillance-of-antimicrobial-susceptibility-patterns-in-shigella-sonnei-isolates-circulating-in-jiangsu-province-china
#9
Bing Gu, Ting Xu, Haiquan Kang, Yanling Xu, Genyan Liu, Shiyang Pan, Huimin Qian, Ping Ma
OBJECTIVES: The rapid emergence of drug-resistant Shigella sonnei is a serious public health problem. This study aimed to characterise the antimicrobial resistance patterns, molecular subtypes, and integron types and resistance gene cassettes in S. sonnei from Jiangsu Province, China. METHODS: In total, 340 S. sonnei were collected in 2002-2011 throughout Jiangsu Province. Antimicrobial susceptibility testing, pulsed-field gel electrophoresis (PFGE), PCR amplification of integrons, restriction fragment length polymorphism (RFLP) and DNA sequencing of cassette regions were performed...
June 9, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28593351/-what-is-the-perception-of-the-10-point-plan-of-the-german-federal-ministry-of-health-against-multidrug-resistant-pathogens-and-measures-of-antibiotic-stewardship-an%C3%A2-interdisciplinary-analysis-among-german-clinicians-and-development-of-a%C3%A2-decision-tool-for
#10
M May, M W Vetterlein, F M Wagenlehner, S D Brookman-May, C Gilfrich, H-M Fritsche, P J Spachmann, M Burger, M Schostak, S Lebentrau
BACKGROUND: Due to increasing antibiotic resistances, relevant treatment problems are currently emerging in clinical practice. In March 2015, the German Federal Ministry of Health (BMG) published a 10-point plan designed to combat this development. Furthermore, the first German guideline on antibiotic stewardship (ABS) was implemented in 2013 and instructs physicians of different specialties about several treatment considerations. Evidence is scarce on how such concepts (10-point plan/BMG, ABS) are perceived among clinicians...
June 7, 2017: Der Urologe. Ausg. A
https://www.readbyqxmd.com/read/28585332/inadequate-adherence-to-swedish-guidelines-for-uncomplicated-lower-urinary-tract-infections-among-adults-in-general-practice
#11
Heidi Lindbäck, Johan Lindbäck, Åsa Melhus
In a primary care study of urinary tract infections (UTIs) performed 2008 in Uppsala County, Sweden, 43% of the patients were culture negative. In order to investigate the background to the observed overdiagnosis of UTI, study invitations were sent to the previously included patients. A total of 256 patients (88% women) approved to participate. Patient charts and recorded laboratory data were reviewed. Two or more of the cardinal symptoms were reported in 53% of the women and in 19% of the men. A dipstick test was performed in 93% of the consultations...
June 6, 2017: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/28580269/complete-arthroscopic-synovectomy-in-management-of-recalcitrant-septic-arthritis-of-the-knee-joint
#12
Tun Hing Lui
Septic arthritis of the knee is a potentially life-threatening condition and can be associated with many late complications. The key of success of management of septic arthritis of the knee joint is early aggressive treatment of surgical debridement and decompression and antibiotic therapy. In adults, arthroscopic drainage with synovectomy is the treatment of choice in septic arthritis of the knee, with lower rates of infectious recurrence than needle aspiration and better functional results than open surgery...
April 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28578094/salmonella-heidelberg-genetic-profile-of-its-antimicrobial-resistance-related-to-extended-spectrum-%C3%AE-lactamases-esbls
#13
Jéssica Giuriatti, Lenita Moura Stefani, Maiara Cristina Brisola, Regiane Boaretto Crecencio, Dinael Simão Bitner, Gláucia Amorim Faria
The objective of this study was to evaluate the phenotypic and genotypic profile of antimicrobial susceptibility and the possible involvement of extended spectrum beta-lactamases (ESBLs) in the resistance profile of Salmonella Heidelberg (SH) isolated from chicken meat. We used 18 SH isolates from chicken meat produced in 2013 in the state of Paraná, Southern Brazil. The isolates were submitted to disk-diffusion tests and from these results it was possible to determine the number of isolates considered multiresistant and the index of multiple antimicrobial resistance (IRMA) against ten antimicrobials routinely used in human and veterinary medicine...
May 31, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28541711/a-critical-review-on-ultrasensitive-spectroscopic-based-methods-for-high-throughput-monitoring-of-bacteria-during-infection-treatment
#14
Nicoleta Elena Dina, Alia Colniță, Tiberiu Szöke-Nagy, Alin Sebastian Porav
The world is in the midst of a pre-emptive public health emergency, one that is just as dramatic as the global aggressive viruses-related crises (Ebola, Zika, or SARS), but not as visible. The "superbugs" and their antimicrobial resistance (AMR) don't cause much public alarm or awareness, but provoke financial losses of $100 trillion annually [1] . This status quo review offers an overview of ultrasensitive methods for high-throughput monitoring of bacteria during infection treatment, the effects of antibiotics on bacteria at single-cell level and the challenges we will need to face in their detection due to the extraordinary capability of these "superbugs" to gain and constantly improve multiresistance to antibiotics...
May 25, 2017: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/28539919/editorial-the-global-challenge-posed-by-the-multiresistant-international-clones-of-bacterial-pathogens
#15
EDITORIAL
Miklos Fuzi
No abstract text is available yet for this article.
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28533535/tail-tubular-protein-a-a-dual-function-tail-protein-of-klebsiella-pneumoniae-bacteriophage-kp32
#16
Anna Pyra, Ewa Brzozowska, Krzysztof Pawlik, Andrzej Gamian, Miroslawa Dauter, Zbigniew Dauter
Tail tubular protein A (TTPA) is a structural tail protein of Klebsiella pneumoniae bacteriophage KP32, and is responsible for adhering the bacteriophage to host cells. For the first time, we found that TTPA also exhibits lytic activity towards capsular exopolysaccharide (EPS) of the multiresistant clinical strain of Klebsiella pneumoniae, PCM2713, and thus should be regarded as a dual-function macromolecule that exhibits both structural and enzymatic actions. Here, we present our crystallographic and enzymatic studies of TTPA...
May 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28522904/importance-of-antimicrobial-susceptibility-testing-for-the-management-of-eradication-in-helicobacter-pylori-infection
#17
REVIEW
Nazlı Arslan, Özlem Yılmaz, Ebru Demiray-Gürbüz
The management of Helicobacter pylori (H. pylori) infection treatment differs from the common treatment protocol for other infectious diseases. Because culture- or molecular-guided approaches face several practical issues, such as the invasive procedures required to obtain gastric biopsy specimens and the lack of availability of routine laboratory testing in some places, H. pylori treatment includes the administration of two or three empirically selected antibiotics combined with a proton pump inhibitor rather than evidence-based eradication treatment...
April 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28515630/an-exception-to-the-rule-no-association-between-antibiotic-resistance-and-decreased-disinfectant-microbicidal-efficacy-orthophthalaldehyde-opa-and-pseudomonas-aeruginosa-isolated-from-icu-and-paraplegic-patients
#18
REVIEW
R Herruzo, M J Vizcaíno, I Herruzo
BACKGROUND: Antibiotic resistance and decreased susceptibility to disinfectants are not usually associated in microorganisms, but we have found an exception to this rule: P. aeruginosa versus orthophthalaldehyde (OPA). METHODS: Bactericidal effect of OPA was measured at 10 minutes on endodoncy files contaminated with an ATCC strain (control) or 206 strains of P. aeruginosa recently isolated from 206 ICU and paraplegic patients in a tertiary university hospital, in two consecutive years...
March 2017: Journal of Preventive Medicine and Hygiene
https://www.readbyqxmd.com/read/28508718/frondoside-a-induces-aif-associated-caspase-independent-apoptosis-in-burkitt-lymphoma-cells
#19
Sergey A Dyshlovoy, Stefanie Rast, Jessica Hauschild, Katharina Otte, Winfried H Alsdorf, Ramin Madanchi, Vladimir I Kalinin, Alexandra S Silchenko, Sergey A Avilov, Judith Dierlamm, Friedemann Honecker, Valentin A Stonik, Carsten Bokemeyer, Gunhild von Amsberg
For patients with refractory or relapsed Burkitt lymphoma (BL), no standard therapy is available for second-line treatment to date. Nonfunctional caspases-dependent apoptosis pathways, inactivating p53 mutations and pro-survival autophagy prevent activity of conventional chemotherapy. Thus, new drugs bypassing these mechanisms of resistance are required. Here, we investigated the efficacy of the marine natural compound frondoside A (FrA) in eight BL cell lines. FrA revealed cytotoxic effects in all cell lines tested including the multiresistant CA46 cells...
May 16, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28493114/-management-of-multiresistant-bacteria-in-urology
#20
REVIEW
W Vahlensieck, R Rudolph, H-J Knopf, U Dahl, W Fabry
Contamination and infection with extensive drug resistant (XDR) bacteria are increasing in urology with the exception of methicillin resistant Staphylococcus aureus (MRSA) (stabilization). They often lead to logistic and therapeutical problems. Only 30-50% of XDR cases are of exogenous origin. To slow this trend, screening, hygiene programs, isolation, decontamination, targeted therapy of symptomatic infections, education programs, and success controls should be applied. Furthermore, all regulatory and legal instructions should be followed...
June 2017: Der Urologe. Ausg. A
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