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https://www.readbyqxmd.com/read/29764953/fighting-antibiotic-resistant-klebsiella-pneumoniae-with-sweet-immune-targets
#1
Roberto Adamo, Immaculada Margarit
Antibiotics and vaccines have greatly impacted human health in the last century by dramatically reducing the morbidity and mortality associated with infectious diseases. The recent challenge posed by the emergence of multidrug-resistant bacteria could possibly be addressed by novel immune prophylactic and therapeutic approaches. Among the newly threatening pathogens, Klebsiella pneumoniae is particularly worrisome in the nosocomial setting, and its surface polysaccharides are regarded as promising antigen candidates...
May 15, 2018: MBio
https://www.readbyqxmd.com/read/29763630/clinical-and-molecular-epidemiologic-characteristics-of-carbapenem-resistant-klebsiella-pneumoniae-infection-colonization-among-neonates-in-china
#2
Dandan Yin, Lei Zhang, Aimin Wang, Leiyan He, Yun Cao, Fupin Hu, Chuanqing Wang
BACKGROUND: The spread of carbapenem-resistant Klebsiella pneumoniae (CR-KPN) is a major concern, but data on CR-KPN infection/colonization in paediatric populations are limited. AIM: This study aimed to analyze epidemiologic and clinical characteristics, therapeutic options of CR-KPN infections in neonates in China. METHODS: A retrospective study was performed at the Children's Hospital of Fudan University, including 88 neonates with CR-KPN admitted between November 2015 and October 2016...
May 12, 2018: Journal of Hospital Infection
https://www.readbyqxmd.com/read/29760533/cross-specificity-of-protective-human-antibodies-against-klebsiella-pneumoniae-lps-o-antigen
#3
Tim Rollenske, Valeria Szijarto, Jolanta Lukasiewicz, Luis M Guachalla, Katarina Stojkovic, Katharina Hartl, Lukas Stulik, Simone Kocher, Felix Lasitschka, Mohammed Al-Saeedi, Jutta Schröder-Braunstein, Moritz von Frankenberg, Gereon Gaebelein, Peter Hoffmann, Sabrina Klein, Klaus Heeg, Eszter Nagy, Gabor Nagy, Hedda Wardemann
Humoral immune responses to microbial polysaccharide surface antigens can prevent bacterial infection but are typically strain specific and fail to mediate broad protection against different serotypes. Here we describe a panel of affinity-matured monoclonal human antibodies from peripheral blood immunoglobulin M-positive (IgM+ ) and IgA+ memory B cells and clonally related intestinal plasmablasts, directed against the lipopolysaccharide (LPS) O-antigen of Klebsiella pneumoniae, an opportunistic pathogen and major cause of antibiotic-resistant nosocomial infections...
May 14, 2018: Nature Immunology
https://www.readbyqxmd.com/read/29751343/clavanin-a-bioconjugated-fe-3-o-4-silane-core-shell-nanoparticles-for-thermal-ablation-of-bacterial-biofilms
#4
Kalline L Ribeiro, Isaac A M Frías, Octavio L Franco, Simoni C Dias, Ailton A Sousa-Junior, Osmar N Silva, Andris F Bakuzis, Maria D L Oliveira, Cesar A S Andrade
The use of central venous catheters (CVC) is highly associated with nosocomial blood infections and its use largely requires a systematic assessment of benefits and risks. Bacterial contamination of these tubes is frequent and may result in development of microbial consortia also known as biofilm. The woven nature of biofilm provides a practical defense against antimicrobial agents, facilitating bacterial dissemination through the patient's body and development of antimicrobial resistance. In this work, the authors describe the modification of CVC tubing by immobilizing Fe3 O4 -aminosilane core-shell nanoparticles functionalized with antimicrobial peptide clavanin A (clavA) as an antimicrobial prophylactic towards Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa and Klebsiella pneumoniae...
April 27, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29751127/temporal-trends-and-patterns-in-antimicrobial-resistant-gram-negative-bacteria-implicated-in-intensive-care-unit-acquired-infections-a-cohort-based-surveillance-study-in-istanbul-turkey
#5
Bulent Durdu, Evangelos I Kritsotakis, Andrew C K Lee, Perihan Torun, Ismail N Hakyemez, Bilge Gultepe, Turan Aslan
OBJECTIVES: This study assessed trends and patterns in antimicrobial resistant intensive care unit (ICU)-acquired infections caused by Gram-negative bacteria (GNB) in Istanbul, Turkey. METHODS: Bacterial culture and antibiotic susceptibility data were collected for all GNB causing nosocomial infections in five adult ICUs of a large university hospital during 2012-2015. Multi-resistance patterns were categorised as multidrug (MDR), extensively-drug (XDR) and pandrug (PDR)-resistance...
May 8, 2018: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/29745619/incidence-and-risk-factors-of-ventilator-associated-pneumonia-in-neonatal-intensive-care-unit-a-first-french-study
#6
Guillaume Geslain, Isabelle Guellec, Romain Guedj, Julia Guilbert, Sandrine Jean, Cécile Valentin, Maryne Demoulin, Yohann Soreze, Ricardo Carbajal, Pierre-Louis Leger, Jerome Rambaud
BACKGROUND: Ventilator-associated pneumonia (VAP) is a severe intensive complication and remains under estimated in neonatal intensive care unit (NICU). Center for Disease Control defined criteria for adults and pediatrics without neonatal criteria. The objective of this article was to evaluate the rate, the risks factors and the outcome of neonates suffering from ventilator-associated pneumonia in a French NICU. METHODS: We conducted a prospective observational study within a one-year period in our NICU...
May 9, 2018: Minerva Anestesiologica
https://www.readbyqxmd.com/read/29743795/prevalence-and-impact-of-bacterial-infections-in-children-with-liver-disease-a-prospective-study
#7
Rishi Bolia, Anshu Srivastava, Rungmei Marak, Surender K Yachha, Ujjal Poddar
Background and aims: Risk of infections is increased in patients with Acute Liver Failure (ALF) and Decompensated Chronic Liver Disease (DCLD). We evaluated the frequency, site, type and risk-factors for bacterial infections in children with ALF and DCLD and its effect on outcome. Methods: ALF or DCLD children were enrolled prospectively. Clinical and laboratory details were recorded. Cultures (blood, urine and ascites) and chest X-ray were done at admission followed by weekly surveillance cultures...
March 2018: Journal of Clinical and Experimental Hepatology
https://www.readbyqxmd.com/read/29742926/iclaprim-a-dihydrofolate-reductase-inhibitor-antibiotic-in-phase-iii-of-clinical-development-a-review-of-its-pharmacology-microbiology-and-clinical-efficacy-and-safety
#8
David B Huang, Matthew Dryden
Iclaprim is under clinical development for treating acute bacterial skin and skin structure infections (ABSSSI) and nosocomial pneumonia most often due to Gram-positive bacteria, including infections due to drug-resistant bacteria. In two recent Phase III studies of patients with acute bacterial skin and skin structure infections, intravenous iclaprim 80 mg every 12 h was noninferior to dose-adjusted vancomycin. Additional studies are planned for patients with nosocomial pneumonia. Iclaprim represents an alternative for the treatment of severe skin and pulmonary infections due to Gram-positive bacteria...
May 10, 2018: Future Microbiology
https://www.readbyqxmd.com/read/29742471/the-impact-of-initial-antibiotic-treatment-failure-real-world-insights-in-healthcare-associated-or-nosocomial-pneumonia
#9
Kellie Ryan, Sudeep Karve, Pascale Peeters, Elisa Baelen, Danielle Potter, Sonia Rojas-Farreras, Esther Pascual, Jesús Rodríguez-Baño
OBJECTIVES: To assess real-world treatment patterns and clinical outcomes associated with initial antibiotic therapy (IAT, antibiotics received ≤48 h post-initiation of antibiotic therapy), including level of IAT failure, and potential risk factors for IAT failure in healthcare-associated infections. METHODS: Data were obtained from medical records of adult patients hospitalized with healthcare-associated pneumonia (HCAP) and nosocomial pneumonia (NP), including ventilator-associated pneumonia, from 1 July 2013 - 30 June 2014 in Brazil, France, Italy, Russia and Spain during the retrospective, observational study, RECOMMEND (NCT02364284; D4280R00005)...
May 6, 2018: Journal of Infection
https://www.readbyqxmd.com/read/29741076/monitoring-of-hospital-acquired-pneumonia-in-patients-with-severe-brain-injury-on-first-access-to-intensive-neurological-rehabilitation-first-year-of-observation
#10
Gianfranco Beghi, Antonio De Tanti, Paolo Serafini, Chiara Bertolino, Antonietta Celentano, Graziella Taormina
Nosocomial or hospital acquired pneumonia (HAP) is an illness contracted during a hospital stay, generally with onset 48 hours or more after admission to hospital, or within 14 days of discharge from hospital. HAP is divided into subgroups: Ventilator-associated pneumonia (VAP), accounting for 86% of hospital acquired pneumonia, and stroke-associated pneumonia (SAP). The incidence of SAP in neurological intensive care units (NICUs) is 4.1-56.6%, in medical intensive care units (MICUs) it is 17-50%, in stroke units it is 3...
May 9, 2018: Monaldi Archives for Chest Disease, Archivio Monaldi Per le Malattie del Torace
https://www.readbyqxmd.com/read/29740989/activity-of-fosfomycin-against-nosocomial-multiresistant-bacterial-pathogens-from-croatia-a-multicentric-study
#11
Luka Bielen, Robert Likić, Viktorija Erdeljić, Ivana Mareković, Nataša Firis, Marijana Grgić-Medić, Ana Godan, Ivan Tomić, Blaženka Hunjak, Alemka Markotić, Danijela Bejuk, Vladimira Tičić, Silvana Balzar, Branka Bedenić
AIM: To determine in vitro susceptibility of multiresistant bacterial isolates to fosfomycin. METHODS: In this prospective in vitro study (local non-random sample, level of evidence 3), 288 consecutively collected multiresistant bacterial isolates from seven medical centers in Croatia were tested from February 2014 until October 2016 for susceptibility to fosfomycin and other antibiotics according to Clinical and Laboratory Standards Institute methodology. Susceptibility to fosfomycin was determined by agar dilution method, while disc diffusion was performed for in vitro testing of other antibiotics...
April 30, 2018: Croatian Medical Journal
https://www.readbyqxmd.com/read/29735827/molecular-characterisation-for-clonality-and-transmission-dynamics-of-an-outbreak-of-klebsiella-pneumoniae-amongst-neonates-in-a-tertiary-care-centre-in-south-india
#12
Chaitra Shankar, Manish Kumar, Ashtawarthani Baskaran, Miracle Magdelene Paul, Nithya Ponmudi, Sridhar Santhanam, Joy Sarojini Michael, Balaji Veeraraghavan
Purpose: Sepsis is a significant cause of morbidity and mortality amongst neonates. Klebsiella pneumoniae is a common cause of nosocomial outbreaks causing bacteraemia and having potential of acquiring plasmids enhancing antimicrobial resistance. In the present study, we investigate K. pneumoniae outbreak causing bacteraemia amongst neonates over a span of 2 months. Isolates were characterised for antimicrobial resistance, virulence, molecular typing for clonality and plasmid typing for transmission dynamics, and patient outcome was investigated...
January 2018: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/29732983/an-outbreak-of-esbl-producing-klebsiella-pneumoniae-in-an-iranian-referral-hospital-epidemiology-and-molecular-typing
#13
Shima Mahmoudi, Babak Pourakbari, Aliakbar Rahbarimanesh, Mohammad Reza Abdolsalehi, Keyghobad Ghadiri, Setareh Mamishi
INTRODUCTION: Klebsiella pneumoniae is a common cause of nosocomial infections; however, there is limited information in Iran regarding nosocomial outbreaks due to extended-spectrum β-lactamase (ESBL) producing K pneumoniae strains, particularly using molecular methods. The present study focused on the molecular mechanism of ESBL resistance and genetic relatedness in K. pneumoniae isolates causing nosocomial infections in an Iranian referral hospital. MATERIAL AND METHODS: This study was evaluated the antimicrobial resistance and molecular epidemiology of K...
May 7, 2018: Infectious Disorders Drug Targets
https://www.readbyqxmd.com/read/29731648/a-retrospective-comparative-analysis-of-risk-factors-and-outcomes-in-carbapenem-susceptible-and-carbapenem-nonsusceptible-klebsiella-pneumoniae-bloodstream-infections-tigecycline-significantly-increases-the-mortality
#14
Tingting Xiao, Wei Yu, Tianshui Niu, Chen Huang, Yonghong Xiao
Background: Carbapenem-nonsusceptible Klebsiella pneumoniae (CnSKP) is rapidly emerging as a life-threatening nosocomial infection. The efficacy of tigecycline in the treatment of bloodstream infections (BSIs) remains controversial. Methods: Data from a total of 428 patients with carbapenem-susceptible Klebsiella pneumoniae (CSKP) and CnSKP BSIs were collected at a single center between January 2013 and December 2015. A three-part analysis was conducted to identify the risk factors associated with CnSKP, explore prognosis, and evaluate treatments...
2018: Infection and Drug Resistance
https://www.readbyqxmd.com/read/29727265/prevalence-of-aminoglycoside-modifying-enzymes-in-escherichia-coli-and-klebsiella-pneumoniae-producing-extended-spectrum-%C3%AE-lactamases-collected-in-two-multicenter-studies-in-spain
#15
Marta Fernández-Martínez, Belén Ruiz Del Castillo, Maria Jesús Lecea-Cuello, Jesús Rodríguez-Baño, Álvaro Pascual, Luis Martínez-Martínez
The in vitro activity of amikacin, gentamicin, kanamycin, tobramycin, neomycin, and netilmicin against 420 Escherichia coli producing extended spectrum β-lactamases (Ec-ESBLs) and 139 Klebsiella pneumoniae producing extended spectrum β-lactamase (Kp-ESBL) collected in two multicenter studies performed in Spain in 2000 and 2006 was determined. The presence of genes encoding aminoglycoside-modifying enzymes (AMEs) and 16S ribosomal RNA (rRNA) methylases [aac(3)-Ia, aac(3)-IIa, aac(3)-IVa, aac(6')-Ib, ant(2")-Ia, ant(4')-IIa, aph(3')-Ia, aph(3')-IIa, armA, rmtB, and rmtC] was also investigated...
May 2018: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/29720526/-pseudomonas-aeruginosa-protease-iv-exacerbates-pneumococcal-pneumonia-and-systemic-disease
#16
Jessica L Bradshaw, Armando R Caballero, Michael A Bierdeman, Kristen V Adams, Haley R Pipkins, Aihua Tang, Richard J O'Callaghan, Larry S McDaniel
Pneumonia is a pulmonary disease affecting people of all ages and is consistently a leading cause of childhood mortality and adult hospitalizations. Streptococcus pneumoniae and Pseudomonas aeruginosa are major lung pathogens commonly associated with community-acquired and nosocomial pneumonia. Additionally, mixed lung infections involving these bacterial pathogens are increasing in prevalence and are frequently more severe than single infections. The cooperative interactions of these two pathogens that impact pulmonary disease severity are understudied...
June 27, 2018: MSphere
https://www.readbyqxmd.com/read/29709574/detection-of-bla-oxa-48-and-clonal-relationship-in-carbapenem-resistant-k-pneumoniae-isolates-at-a-tertiary-care-center-in-western-turkey
#17
Gulfem Ece, Emine Tunc, Baris Otlu, Deniz Aslan, Cem Ece
BACKGROUND: Klebsiella pneumoniae is an important nosocomial pathogen that can lead to high morbidity and mortality. ESBL and carbapenamase producing strains may cause epidemic situations. The aim of our study was to investigate the molecular epidemiology and clonal relationship between carbapenem resistant K. pneumoniae strains isolated from our hospital during a three month period. METHODS: Fourteen carbapenem resistant K. pneumoniae strains isolated during April 1st-June 30th 2013 were included...
April 27, 2018: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/29704616/clearance-of-intracellular-klebsiella-pneumoniae-infection-using-gentamicin-loaded-nanoparticles
#18
Lai Jiang, Michelle K Greene, Jose Luis Insua, Joana Sa Pessoa, Donna M Small, Peter Smyth, Aidan McCann, Francesco Cogo, Jose A Bengoechea, Clifford C Taggart, Christopher J Scott
Klebsiella pneumoniae is a foremost gram-negative pathogen that can induce life-threatening nosocomial pulmonary infections. Although it can be phagocytosed successfully by lung resident macrophages, this pathogen remains viable within vacuolar compartments, resulting in chronic infection and limiting therapeutic treatment with antibiotics. In this study, we aimed to generate and evaluate a cell-penetrant antibiotic poly(lactide-co-glycolide) (PLGA)-based formulation that could successfully treat intracellular K...
April 25, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29701307/exogenous-fatty-acids-alter-phospholipid-composition-membrane-permeability-capacity-for-biofilm-formation-and-antimicrobial-peptide-susceptibility-in-klebsiella-pneumoniae
#19
Chelsea R Hobby, Joshua L Herndon, Colton A Morrow, Rachel E Peters, Steven J K Symes, David K Giles
Klebsiella pneumoniae represents a major threat to human health due to a combination of its nosocomial emergence and a propensity for acquiring antibiotic resistance. Dissemination of the bacteria from its native intestinal location creates severe, complicated infections that are particularly problematic in healthcare settings. Thus, there is an urgency for identifying novel treatment regimens as the incidence of highly antibiotic-resistant bacteria rises. Recent findings have highlighted the ability of some Gram-negative bacteria to utilize exogenous fatty acids in ways that modify membrane phospholipids and influence virulence phenotypes, such as biofilm formation and antibiotic resistance...
April 27, 2018: MicrobiologyOpen
https://www.readbyqxmd.com/read/29691260/ceftolozane-tazobactam-for-the-treatment-of-multidrug-resistant-pseudomonas-aeruginosa-pneumonia-in-a-patient-receiving-intermittent-hemodialysis
#20
Mohammed A Alessa, Thamer A Almangour, Abdulaziz Alhossan, Musaed A Alkholief, Mohammed Alhokail, Deanne E Tabb
PURPOSE: The safety and effectiveness of ceftolozane-tazobactam for the treatment of multidrug-resistant (MDR) Pseudomonas aeruginosa pneumonia in a patient receiving intermittent hemodialysis are reported. CASE REPORT: A 79-year-old African-American man arrived at an emergency trauma center from a nursing home via ambulance with shortness of breath and potential nasogastric tube misplacement. His medical history included end-stage renal disease (ESRD) for which he was receiving intermittent hemodialysis 3 times per week, hypertension, sacral ulcer, coronary artery bypass graft surgery, and P...
May 1, 2018: American Journal of Health-system Pharmacy: AJHP
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