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https://www.readbyqxmd.com/read/28544183/clinical-outcomes-of-intestinal-transplant-recipients-colonized-with-multi-drug-resistant-organisms-a-retrospective-study
#1
Jacques Simkins, Michele I Morris, Jose F Camargo, Rodrigo Vianna, Thiago Beduschi, Lilian M Abbo
Rates of multi-drug resistant organisms (MDRO) colonization among intestinal transplant (ITx) recipients have not been reported. Colonization rates with vancomycin-resistant Enterococcus (VRE), carbapenem-resistant gram-negative bacteria (CR-GNB) and methicillin-resistant Staphylococcus aureus (MRSA) were obtained retrospectively in adults undergoing ITx (isolated or multi-visceral) from 1/2009-12/2015. We assessed for VRE, CR-GNB and MRSA bacteremia during the first year post-transplant for patients colonized with VRE, CR-GNB and MRSA respectively and for those who were not colonized...
May 19, 2017: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/28526792/environmental-spread-of-ndm-1-producing-multi-drug-resistant-bacteria-in-dhaka-bangladesh
#2
Mohammad Aminul Islam, Moydul Islam, Rashedul Hasan, M Iqbal Hossain, Ashikun Nabi, Mahdia Rahman, Wil H F Goessens, Hubert P Endtz, Alexandria B Boehm, Shah M Faruque
Resistance to carbapenem antibiotics through the production of New Delhi Metallo-β-lactamase-1 (NDM-1) constitutes an emerging challenge in the treatment of bacterial infections. To monitor possible source of spread of these organisms in Dhaka, Bangladesh, we conducted comparative analysis of waste water samples from hospital adjacent areas (HAR) and from community areas (COM) as well as public tap water samples for the occurrence and characteristics of NDM-1 producing bacteria. Of 72 HAR samples tested 51 (71%) were positive for NDM-1-producing bacteria as evidenced by phenotypic tests and the presence of blaNDM-1 gene, compared to 5 of 41 (12...
May 19, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28525674/continuous-hemoadsorption-with-a-cytokine-adsorber-during-sepsis-a-review-of-the-literature
#3
Khosrow S Houschyar, Malcolm N Pyles, Susanne Rein, Ina Nietzschmann, Dominik Duscher, Zeshaan N Maan, Kristian Weissenberg, Hubertus M Philipps, Catharina Strauss, Beate Reichelt, Frank Siemers
Sepsis is a well-recognized healthcare issue worldwide, ultimately resulting in significant mortality, morbidity and resource utilization during and after critical illness. In its most severe form, sepsis causes multi-organ dysfunction that produces a state of critical illness characterized by severe immune dysfunction and catabolism. Sepsis induces the activation of complement factor via 3 pathways and the release of inflammatory cytokines such as tumor necrosis factor alpha (TNF-α) and interleukin-1beta (IL-1β), resulting in a systemic inflammatory response...
May 19, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28522011/vaccination-with-a-live-attenuated-acinetobacter-baumannii-deficient-in-thioredoxin-provides-protection-against-systemic-acinetobacter-infection
#4
Sarah Ainsworth, Patrick M Ketter, Jieh-Juen Yu, Rose C Grimm, Holly C May, Andrew P Cap, James P Chambers, M Neal Guentzel, Bernard P Arulanandam
Multi-drug resistant Acinetobacter baumannii (MDR-Ab), an opportunistic pathogen associated with nosocomial and combat related infections, has a high mortality due to its virulence and limited treatment options. Deletion of the thioredoxin gene (TrxA) from a clinical isolate of MDR-Ab resulted in a 100-fold increase in 50% lethal dose (LD50) in a systemic challenge murine model. Thus, we investigated the potential use of this attenuated strain as a live vaccine against MDR-Ab. Mice were vaccinated by subcutaneous (s...
May 15, 2017: Vaccine
https://www.readbyqxmd.com/read/28515213/rapid-identification-of-five-classes-of-carbapenem-resistance-genes-directly-from-rectal-swabs-using-the-xpert%C3%A2-carba-r-assay
#5
Nicholas M Moore, Rafael Cantón, Edoardo Carretto, Lance R Peterson, Robert L Sautter, Maria M Traczewski
Carbapenemase-producing organisms (CPO) have been identified by global health leaders as an urgent threat. Detection of patients with gastrointestinal carriage of CPO is necessary to interrupt their spread within healthcare facilities. In this multi-site study, we assessed the performance of the Xpert® Carba-R test, a rapid real-time PCR (qPCR) assay that detects five families of carbapenemase genes (blaIMP, blaKPC, blaNDM, blaOXA-48, and blaVIM) directly from rectal swab specimens. Using dual swabs, specimens from 755 patients were collected and tested prospectively...
May 17, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28512606/antimicrobial-activity-of-nigerian-medicinal-plants
#6
REVIEW
Madubuike Umunna Anyanwu, Rosemary Chinazam Okoye
Antimicrobial resistance (AMR) is currently one of the major threats facing mankind. The emergence and rapid spread of multi- and pan-drug-resistant organisms (such as vancomycin-, methicillin-, extended-spectrum β-lactam-, carbapenem- and colistin-resistant organisms) has put the world in a dilemma. The health and economic burden associated with AMR on a global scale are dreadful. Available antimicrobials have been misused and are almost ineffective with some of these drugs associated with dangerous side effects in some individuals...
April 2017: Journal of Intercultural Ethnopharmacology
https://www.readbyqxmd.com/read/28511015/multi-stereocenter-containing-cyclopentanoids-from-ynamides-via-oxazolidinone-controlled-nazarov-cyclization
#7
Narasimhulu Manchala, Hanson Yeu Leuk Law, Daniel Jarrah Kerr, Rohan Volpe, Romain J Lepage, Jonathan M White, Elizabeth H Krenske, Bernard L Flynn
Achieving ready enantioselective access to multi-stereocenter containing cyclopentyl rings is an area of great significance to organic synthesis. In this work we describe a general protocol for accessing multi-stereocenter containing cyclopentanoids from simple N-alkynyloxazolidinones (Ox-ynamides). This protocol involves conversion of Ox-ynamides into Ox-activated divinyl and aryl vinyl ketones that undergo facile Nazarov cyclization with excellent chemo-, regio- and stereocontrol. The Ox auxiliary directs all aspects of reactivity and selectivity, both the electrocyclization and in the subsequent transformations of the resulting oxyallyl intermediate...
May 16, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28502694/phase-ii-trial-of-the-pi3-kinase-inhibitor-buparlisib-bkm-120-with-or-without-enzalutamide-in-men-with-metastatic-castration-resistant-prostate-cancer
#8
Andrew J Armstrong, Susan Halabi, Patrick Healy, Joshi J Alumkal, Carolyn Winters, Julie Kephart, Rhonda L Bitting, Carey Hobbs, Colleen F Soleau, Tomasz M Beer, Rachel Slottke, Kelly Mundy, Evan Y Yu, Daniel J George
BACKGROUND: Phosphatidylinositol-3-kinase (PI3K) and androgen receptor pathway activation is common in metastatic castration resistant prostate cancer (mCRPC). Buparlisib is an oral, pan-class I PI3 kinase inhibitor. METHODS: This was a multisite single arm phase II trial of buparlisib 100 mg ± enzalutamide daily in men with mCRPC whose disease progressed on or who were not candidates for docetaxel. The primary end-point was the rate of radiographic/clinical progression-free survival (PFS) at 6 months...
May 11, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28495348/development-of-a-tripolar-model-of-technology-acceptance-hospital-based-physicians-perspective-on-ehr
#9
Mher Beglaryan, Varduhi Petrosyan, Edward Bunker
BACKGROUND AND PURPOSE: In health care, information technologies (IT) hold a promise to harness an ever-increasing flow of health related information and bring significant benefits including improved quality of care, efficiency, and cost containment. One of the main tools for collecting and utilizing health data is the Electronic Health Record (EHR). EHRs implementation can face numerous barriers to acceptance including attitudes and perceptions of potential users, required effort attributed to their implementation and usage, and resistance to change...
June 2017: International Journal of Medical Informatics
https://www.readbyqxmd.com/read/28494359/impacts-of-solids-retention-time-on-trace-organic-compound-attenuation-and-bacterial-resistance-to-trimethoprim-and-sulfamethoxazole
#10
Majid Neyestani, Eric Dickenson, Jean McLain, Eduardo Robleto, Channah Rock, Daniel Gerrity
Bacteria can grow in the presence of trimethoprim and sulfamethoxazole by expressing antibiotic resistance genes or by acquiring thymine or thymidine from environmental reservoirs to facilitate DNA synthesis. The purpose of this study was to evaluate whether activated sludge serves as a reservoir for thymine or thymidine, potentially impacting the quantification of antibiotic resistant bacteria. This study also assessed the impacts of varying solids retention time (SRT) on trimethoprim and sulfamethoxazole removal during wastewater treatment and single and multi-drug resistance...
April 26, 2017: Chemosphere
https://www.readbyqxmd.com/read/28489819/predictive-compound-accumulation-rules-yield-a-broad-spectrum-antibiotic
#11
Michelle F Richter, Bryon S Drown, Andrew P Riley, Alfredo Garcia, Tomohiro Shirai, Riley L Svec, Paul J Hergenrother
Most small molecules are unable to rapidly traverse the outer membrane of Gram-negative bacteria and accumulate inside these cells, making the discovery of much-needed drugs against these pathogens challenging. Current understanding of the physicochemical properties that dictate small-molecule accumulation in Gram-negative bacteria is largely based on retrospective analyses of antibacterial agents, which suggest that polarity and molecular weight are key factors. Here we assess the ability of over 180 diverse compounds to accumulate in Escherichia coli...
May 10, 2017: Nature
https://www.readbyqxmd.com/read/28475912/transport-of-multi-walled-carbon-nanotubes-stabilized-by-carboxymethyl-cellulose-and-starch-in-saturated-porous-media-influences-of-electrolyte-clay-and-humic-acid
#12
Bing Han, Wen Liu, Xiao Zhao, Zhengqing Cai, Dongye Zhao
This study investigated the transport behaviors of carboxymethyl cellulose (CMC) and starch stabilized multi-walled carbon nanotubes (MWNTs) through a saturated quartz sand column in the presence of electrolytes, model clays, and natural organic matter (humic acid) through column breakthrough experiments and model simulations. Both stabilizers, CMC and starch, greatly enhanced the breakthrough of MWNTs, with a full breakthrough plateau (C/C0) ranging from 0.69 to 0.90 at ionic strength from 0.3 to 10mM. Between the two stabilizers, CMC was more effective in resisting particle deposition, and thus CMC-stabilized MWNTs were more transportable through the medium...
May 2, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28472599/peri-prosthetic-knee-infection-management-spacers-loaded-with-two-or-three-antibiotic-agents
#13
David Joaquin Ortola, Domenico Fenga, Sandra Marcellino, Massimiliano Rosi, Francesco Centofanti, Michele Attilio Rosa
BACKGROUND: The purpose of this work was to compare pre-made antibiotic-loaded spacers with two commercially available antibiotic agents and custom-made cements with three antibiotic agents added. We evaluated: (a) the validity of our procedures, (b) the control of the rate of infection in the long term, (c) complications, and (d) quality of life and patient satisfaction. METHODS: A retrospective cohort study was performed on 112 consecutively treated patients between January 2010 and December 2013; 56 patients were treated with a pre-formed cement spacer (clindamycin + gentamicin), and 56 patients were treated with a spacer loaded with three antibiotic agents (clindamycin + gentamicin + vancomycin)...
May 4, 2017: Surgical Infections
https://www.readbyqxmd.com/read/28466533/synergic-effects-of-sugar-and-caffeine-on-insulin-mediated-metabolomic-alterations-after-an-acute-consumption-of-soft-drinks
#14
Raúl González-Domínguez, Rosa María Mateos, Alfonso María Lechuga-Sancho, José Joaquín González-Cortés, Manuel Corrales-Cuevas, Juan Alberto Rojas-Cots, Carmen Segundo, Mónica Schwarz
High sugar consumption elicits numerous deleterious effects on health by inducing insulin resistance, which is closely associated with the development of metabolic disorders such as obesity or type-2 diabetes. Furthermore, there is also growing evidence that caffeine may play an important role in the regulation of insulin release and the appearance of related metabolic impairments. Thus, the aim of this work was to investigate the impact of acute sugar and caffeine intake on the metabolic health status by using a metabolomic multi-platform based on the combination of flow injection mass spectrometry and ultra-high performance liquid chromatography mass spectrometry...
May 3, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28454769/long-lasting-outbreak-due-to-ctx-m-15-producing-klebsiella-pneumoniae-st336-in-a-rehabilitation-ward-report-and-literature-review
#15
F Valsdottir, A Elfarsdottir Jelle, O Gudlaugsson, I Hilmarsdottir
BACKGROUND: Whereas Klebsiella species are the most frequently occurring agents in nosocomial outbreaks due to multidrug-resistant Gram-negative organisms, very few outbreaks have been reported from rehabilitation wards. AIM: To describe a long-lasting outbreak due to extended-spectrum β-lactamase-producing (ESBL) Klebsiella pneumoniae in a rehabilitation ward. METHODS: ESBL K. pneumoniae from all in- and outpatients whose specimens were tested at a tertiary care university hospital between 2007 and 2012 were typed by pulsed-field gel electrophoresis and selected isolates were submitted to multi-locus sequence typing and ESBL genotyping...
April 9, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28454589/prevalence-and-antimicrobial-resistance-profile-of-staphylococcus-in-dairy-farms-abattoir-and-humans-in-addis-ababa-ethiopia
#16
Takele Beyene, Halefom Hayishe, Fikru Gizaw, Ashenafi Feyisa Beyi, Fufa Abunna, Bedaso Mammo, Dinka Ayana, Hika Waktole, Reta Duguma Abdi
BACKGROUND: Staphylococcus species cause mastitis and wound infection in livestock and food poisoning in humans through ingestion of contaminated foods, including meat and dairy products. They are evolving pathogens in that they readily acquire drug resistance, and multiple drug-resistant (MDR) isolates are increasing in human and veterinary healthcare. Therefore, this study was conducted to evaluate the prevalence of Staphylococci and their drug resistance in dairy farms and abattoir settings of Addis Ababa...
April 28, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28451309/a-multi-functional-pegylated-gold-iii-compound-potent-anti-cancer-properties-and-self-assembly-into-nanostructures-for-drug-co-delivery
#17
Clive Yik-Sham Chung, Sin-Ki Fung, Ka-Chung Tong, Pui-Ki Wan, Chun-Nam Lok, Yanyu Huang, Tianfeng Chen, Chi-Ming Che
Gold(iii) porphyrin-PEG conjugates [Au(TPP-COO-PEG5000-OCH3)]Cl (1) and [Au(TPP-CONH-PEG5000-OCH3)]Cl (2) have been synthesized and characterized. Based on the amphiphilic character of the conjugates, they were found to undergo self-assembly into nanostructures with size 120-200 nm and this did not require the presence of other surfactants or components for nano-assembly, unlike most conventional drug nano-formulations. With a readily hydrolyzable ester linkage, chemotherapeutic [Au(TPP-COOH)](+) exhibited triggered release from the conjugate 1 in acidic buffer solution as well as in vitro and in vivo without the formation of toxic side products...
March 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/28451037/colonisation-of-antibiotic-resistant-bacteria-in-a-cohort-of-hiv-infected-children-in-ghana
#18
Eric Sampane-Donkor, Ebenezer Vincent Badoe, Jennifer Adoley Annan, Nicholas Nii-Trebi
Antibiotic use not only selects for resistance in pathogenic bacteria, but also in commensal flora of exposed individuals. Little is known epidemiologically about antibiotic resistance in relation to people with HIV infection in sub-Saharan Africa. This study investigated the carriage of antibiotic resistant bacteria among HIV infected children at a tertiary hospital in Ghana. One hundred and eighteen HIV positive children were recruited at the Korle-Bu Teaching Hospital in Ghana and nasopharyngeal specimens were collected from them...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28448572/clonality-virulence-determinants-and-profiles-of-resistance-of-clinical-acinetobacter-baumannii-isolates-obtained-from-a-spanish-hospital
#19
Elias Dahdouh, Rosa Gómez-Gil, Sonsoles Pacho, Jesús Mingorance, Ziad Daoud, Monica Suárez
INTRODUCTION: Acinetobacter baumannii is a nosocomial pathogen that is showing increasing rates of carbapenem resistance. Multi-Drug Resistant (MDR) International Clones (ICs), associated with certain oxacillinases, are being reported globally. This organism also harbors numerous virulence determinants. In this study, we aim at characterizing A. baumannii isolated from a Spanish hospital in terms of antimicrobial susceptibility, clonality, carbapenemase genes harbored, and virulence determinants expressed...
2017: PloS One
https://www.readbyqxmd.com/read/28448121/hiv-1-frameshift-rna-targeted-triazoles-inhibit-propagation-of-replication-competent-and-multi-drug-resistant-hiv-in-human-cells
#20
Thomas A Hilimire, Jeffrey M Chamberlain, Viktoriya Anokhina, Ryan P Bennett, Oliver Swart, Jason R Myers, John M Ashton, Ryan A Stewart, Aaron L Featherston, Kathleen Gates, Eric D Helms, Harold C Smith, Stephen Dewhurst, Benjamin L Miller
The HIV-1 frameshift-stimulating (FSS) RNA, a regulatory RNA of critical importance in the virus' life cycle, has been posited as a novel target for anti-HIV drug development. We report the synthesis and evaluation of triazole-containing compounds able to bind the FSS with high affinity and selectivity. Readily accessible synthetically, these compounds are less toxic than previously reported olefin congeners. We show for the first time that FSS-targeting compounds have antiviral activity against replication-competent HIV in human cells, including a highly cytopathic, multidrug-resistant strain...
May 5, 2017: ACS Chemical Biology
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