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https://www.readbyqxmd.com/read/28811792/antimicrobial-susceptibility-patterns-of-clinical-isolates-of-pseudomonas-aeruginosa-isolated-from-patients-of-respiratory-tract-infections-in-a-tertiary-care-hospital-peshawar
#1
Abdul Samad, Tanveer Ahmed, Afaq Rahim, Abdul Khalil, Iftikhar Ali
OBJECTIVE: This study aims to determine the prevalence and susceptibility pattern of Pseudomonas aeruginosa and multidrug-resistant (MDR) isolates in patients suffering from respiratory tract infection. METHODS: A cross sectional study was conducted from January to December 2014 in Northwest General Hospital and Research Centre, Peshawar. A total of 615 sputum samples were collected from both in and out-patients. Sputum samples were collected as per standard procedure and were inoculated on Blood, MacConkey and Chocolate agar...
May 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28808348/rapid-phenotypic-stress-based-microfluidic-antibiotic-susceptibility-testing-of-gram-negative-clinical-isolates
#2
Maxim Kalashnikov, Marc Mueller, Christine McBeth, Jean C Lee, Jennifer Campbell, Andre Sharon, Alexis F Sauer-Budge
Bacteremia is a life-threatening condition for which antibiotics must be prescribed within hours of clinical diagnosis. Since the current gold standard for bacteremia diagnosis is based on conventional methods developed in the mid-1800s-growth on agar or in broth-identification and susceptibility profiling for both Gram-positive and Gram-negative bacterial species requires at least 48-72 h. Recent advancements in accelerated phenotypic antibiotic susceptibility testing have centered on the microscopic growth analysis of small bacterial populations...
August 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28807096/a-five-year-surveillance-of-carbapenemase-producing-klebsiella-pneumoniae-in-a-pediatric-hospital-in-china-reveals-increased-predominance-of-ndm-1
#3
Fang Dong, Jie Lu, Yan Wang, Jin Shi, Jing Hui Zhen, Ping Chu, Yang Zhen, Shu Jing Han, Yong Li Guo, Wen Qi Song
OBJECTIVE: To characterize carbapenem (CPM)-non-susceptible Klebsiella pneumoniae (K. pneumoniae) and carbape-nemase produced by these strains isolated from Beijing Children's Hospital based on a five-year surveillance. METHODS: The Minimal Inhibition Concentration values for 15 antibiotics were assessed using the Phonix100 compact system. PCR amplification and DNA sequencing were used to detect genes encoding carbapenemases. WHONET 5.6 was finally used for resistance analysis...
August 2017: Biomedical and Environmental Sciences: BES
https://www.readbyqxmd.com/read/28806566/volumetric-adsorptive-microsampling-liquid-chromatography-tandem-mass-spectrometry-assay-for-the-simultaneous-quantification-of-four-antibiotics-in-human-blood-method-development-validation-and-comparison-with-dried-blood-spot
#4
Sebastiano Barco, Elio Castagnola, Andrea Moscatelli, James Rudge, Gino Tripodi, Giuliana Cangemi
In this paper we show the development and validation of a volumetric absorptive microsampling (VAMS™)-LC-MS/MS method for the simultaneous quantification of four antibiotics: piperacillin-tazobactam, meropenem, linezolid and ceftazidime in 10μL human blood. The novel VAMS-LC-MS/MS method has been compared with a dried blood spot (DBS)-based method in terms of impact of hematocrit (HCT) on accuracy, reproducibility, recovery and matrix effect. Antibiotics were extracted from VAMS and DBS by protein precipitation with methanol after a re-hydration step at 37°C for 10min...
August 2, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28799835/occurrence-of-carbapenemase-producing-enterobacteriaceae-isolates-in-the-wildlife-first-report-of-oxa-48-in-wild-boars-in-algeria
#5
Taous Bachiri, Sofiane Bakour, Rym Lalaoui, Nadia Belkebla, Meriem Allouache, Jean Marc Rolain, Abdelaziz Touati
The aim of the present study was to screen for the presence of carbapenemase-producing Enterobacteriaceae (CPE) isolates from wild boars and Barbary macaques in Algeria. Fecal samples were collected from wild boars (n = 168) and Barbary macaques (n = 212), in Bejaia, Algeria, between September 2014 and April 2016. The isolates were identified and antimicrobial susceptibility was determined. Carbapenem resistance determinants were studied using PCR and sequencing, while clonal relatedness was performed using multilocus sequence typing (MLST)...
August 11, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28797068/virulence-profiles-and-innate-immune-responses-against-highly-lethal-multidrug-resistant-nosocomial-isolates-of-acinetobacter-baumannii-from-a-tertiary-care-hospital-in-mexico
#6
Roberto Rosales-Reyes, Catalina Gayosso-Vázquez, José Luis Fernández-Vázquez, Ma Dolores Jarillo-Quijada, César Rivera-Benítez, José Ignacio Santos-Preciado, María Dolores Alcántar-Curiel
Virulence profiles and innate immune responses were studied in Acinetobacter baumannii from nosocomial infections collected over one year in a tertiary care hospital in Mexico. A. baumannii were identified by VITEK 2 System followed by susceptibility tests. Carbapenemase genes, active efflux mechanism to imipenem and meropenem and outer membrane proteins profile were analyzed to evaluate their role on the activity of carbapenem resistance. All isolates were genotyped by pulsed field gel electrophoresis. The ability to form biofilm was determined on a polystyrene surface...
2017: PloS One
https://www.readbyqxmd.com/read/28792697/the-first-enterobacter-cloacae-co-producing-ndm-and-oxa-48-carbapenemases-and-interhospital-spread-of-oxa-48-and-ndm-producing-klebsiella-pneumoniae-in-turkey
#7
Demet Haciseyitoglu, Aysegul Dokutan, Ayham Abulaila, Fatma Erdem, Yasemin Cag, Serdar Ozer, Zerrin Aktas
BACKGROUND: The aim of this study was to investigate the occurrence of carbapenemase-producing Enterobacteriaceae. METHODS: A total of 54 carbapenem nonsusceptible Enterobacteriaceae (CRE) isolates were recovered from clinical samples sent to the Dr. Lutfi Kirdar Kartal Training and Research Hospital from the period 2011 through 2014. Forty-four isolates were Klebsiella pneumoniae (CRKP) and the other 10 were Enterobacter cloacae (CREC).The isolate identifications and antibiotic sensitivity tests were performed using a Vitek2 automatic system...
July 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28789605/analysis-of-distribution-and-antibiotic-resistance-of-pathogens-isolated-from-the-paediatric-population-in-shenmu-hospital-from-2011-2015
#8
Yang Hui-Min, Wang Yan-Ping, Yong Lin Liu, Bilal Haider Shamsi, He Bo, Meng Xu-Chun
Objective This study aimed to investigate the epidemiology and changes in antibacterial susceptibility of children in Shenmu City, northern Shaanxi, and provide a basis for rational drug use. Methods The distribution and drug resistance pattern of pathogenic bacteria isolated from children were retrospectively analysed. Results A total of 573 strains of pathogens were cultivated. A total of 201 (35.07%) strains of Gram-positive cocci and 183 (31.93%) strains of Gram-negative cocci were detected. A total of 189 (32...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28782250/meropenem-induced-immune-thrombocytopenia-and-the-diagnostic-process-of-laboratory-testing
#9
Rong Huang, Guang-Qing Cai, Jun-Hua Zhang, Feng-Xia Liu, Jin-Qi Ma, Hong Liu, Xin-Min Nie, Rong Gui
BACKGROUND: Drug-induced immune thrombocytopenia (DITP) is a serious, life-threatening clinical syndrome, the diagnosis of which is consistently difficult. In this report, we present a case of DITP caused by meropenem that was confirmed by laboratory tests. CASE REPORT: A 59-year-old male patient developed severe thrombocytopenia 8 days after the administration of meropenem and cefoperazone-sulbactam. After other causes were ruled out, DITP was suspected. Drug-induced platelet (PLT) antibodies were detected by enzyme immunoassay, flow cytometry, and monoclonal antibody immobilization of PLT antigens (MAIPA)...
August 7, 2017: Transfusion
https://www.readbyqxmd.com/read/28781060/antibacterial-activity-of-exogenous-glutathione-and-its-synergism-on-antibiotics-sensitize-carbapenem-associated-multidrug-resistant-clinical-isolates-of-acinetobacter-baumannii
#10
Roaa Alharbe, Ayidh Almansour, Dong H Kwon
A major clinical impact of A. baumannii is hospital-acquired infections including ventilator-associated pneumonia. The treatment of this pathogen is often difficult due to its innate and acquired resistance to almost all commercially available antibiotics. Infections with carbapenem-associated multidrug resistant A. baumannii is the most problematic. Glutathione is a tripeptide thiol-antioxidant and antibacterial activity of exogenous glutathione was reported in some bacteria. However, clinical relevance and molecular details of the antibacterial activity of glutathione are currently unclear...
July 29, 2017: International Journal of Medical Microbiology: IJMM
https://www.readbyqxmd.com/read/28774865/shifts-in-antimicrobial-consumption-and-infection-rates-before-and-during-a-piperacillin-tazobactam-shortage
#11
S Travis King, Katie E Barber, Jason J Parham, Kayla R Stover
BACKGROUND: Anti-infective shortages represent a growing threat to the optimal management of the infected patient and alter the institutional selective pressure against hospital-acquired infections. The objective of this analysis was to assess the impact that a shortage of piperacillin-tazobactam had on the overall antibacterial use and HAI rates at an academic institution. METHODS: Antimicrobial use and infection data were extracted from TheraDoc Clinical Surveillance Software (Premier, Inc...
July 31, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28771141/risk-factors-and-molecular-mechanisms-associated-with-trimethoprim-sulfamethoxazole-resistance-in-stenotrophomonas-maltophilia-in-mexico
#12
Sandra Abril Herrera-Heredia, César Pezina-Cantú, Elvira Garza-González, Paola Bocanegra-Ibarias, Soraya Mendoza-Olazarán, Rayo Morfín-Otero, Adrián Camacho-Ortiz, Licet Villarreal-Treviño, Eduardo Rodríguez-Noriega, Laura Paláu-Davila, Héctor Jesús Maldonado-Garza, Samantha Flores-Treviño
PURPOSE: Stenotrophomonas maltophilia is a multidrug-resistant opportunistic pathogen causing an increasing number of nosocomial infections. Our aim was to evaluate the risk factors and mechanisms associated with trimethoprim-sulfamethoxazole (SXT) resistance in S. maltophilia infections in Mexico. METHODOLOGY: Clinical isolates and patients' demographic and clinical data were collected from February 2007 to August 2015 in two tertiary-care hospitals in Mexico. Antimicrobial susceptibility and analysis of sul and SmeABC and SmeDEF efflux pump overexpression were performed in all isolates...
August 4, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28771110/temporary-intra-operative-portocaval-shunts-post-operative-infections-and-mid-term-survival-after-cava-sparing-liver-transplantation
#13
Maximilian Weniger, Joachim Andrassy, Thomas Weig, Beatrice Grabein, Alexander Crispin, Markus Rentsch, Christian Siebers, Alexandr Bazhin, Jan G D'Haese, Werner Hartwig, Jens Werner, Markus Guba, Eugen Faist, Sebastian Pratschke, Martin K Angele
BACKGROUND: Temporary intra-operative portocaval shunts (TPCS) are believed to improve outcomes after cava-sparing liver transplantation. We hypothesize that decompression of the portal venous system via a TPCS reduces gut congestion, thereby decreasing bacterial translocation. Thus, we sought to clarify whether transplantation with a TPCS alters rates of post-operative infections and survival. PATIENTS AND METHODS: Patients undergoing liver transplantation (n = 189) were stratified by usage of a TPCS and the type of intra-operative antibiotic prophylaxis...
August 3, 2017: Surgical Infections
https://www.readbyqxmd.com/read/28767588/successful-ceftazidime-avibactam-treatment-of-mdr-kpc-positive-klebsiella-pneumoniae-infection-in-a-patient-with-traumatic-brain-injury-a-case-report
#14
Agnese Gugliandolo, Carla Caio, Maria Lina Mezzatesta, Carmela Rifici, Placido Bramanti, Stefania Stefani, Emanuela Mazzon
RATIONALE: Carbapenem-resistant Enterobacteriaceae infections are a serious health care problem, because of the high mortality. Carbapenem resistance is mainly caused by carbapenemases production, including Klebsiella pneumoniae carbapenemase (KPC). Ceftazidime-avibactam is a new cephalosporin/β-lactamase inhibitor combination for the treatment of complicated urinary, intra-abdominal infections, and nosocomial pneumonia caused by gram negative, or other serious gram-negative infections...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28760900/population-pharmacokinetics-of-high-dose-continuous-infusion-meropenem-and-considerations-for-the-use-in-the-treatment-of-infections-due-to-kpc-producing-klebsiella-pneumoniae
#15
Piergiorgio Cojutti, Assunta Sartor, Elda Righi, Claudio Scarparo, Matteo Bassetti, Federico Pea
We assessed the population pharmacokinetics of high-dose continuous infusion (HDCI) meropenem in a cohort of patients with KPC-producing Klebsiella pneumoniae (KPC-Kp) infections. Monte Carlo simulations were used to define the permissible HDCI meropenem regimens that could be safely considered for the treatment of KPC-Kp infections due to meropenem-resistant strains. Permissible doses were arbitrarily defined as those associated with ≤10-15% likelihood of meropenem steady-state concentrations (Css) >100 mg/L...
July 31, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28760891/influence-of-beta-lactam-infusion-strategy-on-acute-kidney-injury
#16
Sarah E Cotner, W Cliff Rutter, Donna R Burgess, Katie L Wallace, Craig A Martin, David S Burgess
Background Limited literature is available assessing nephrotoxicity with prolonged beta-lactam infusions. This study compared the incidence of acute kidney injury (AKI) associated with a prolonged beta-lactam infusion (PI) or an intermittent infusion.Methods. This was a retrospective, matched cohort study at an academic medical center from July 2006 to September 2015. Adult patients who received piperacillin-tazobactam (TZP), cefepime (FEP), or meropenem (MEM) for at least 48 hours were evaluated. Patients were excluded for pre-existing renal dysfunction or pregnancy...
July 31, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28758820/antibacterial-activity-of-human-simulated-epithelial-lining-fluid-concentrations-of-amikacin-inhale-alone-and-in-combination-with-meropenem-against-acinetobacter-baumannii
#17
Islam M Ghazi, Mordechai Grupper, David P Nicolau
BACKGROUND: Acinetobacter baumannii(ACBN) is a MDR organism causing pneumonia in ventilated patients. High MICs often result in insufficient lung exposures, thus poor outcomes have been observed with parenteral antimicrobials. Amikacin Inhale(AMK-I), is a drug-device combination of amikacin and a Pulmonary Drug Delivery System device. We aimed to describe the pharmacodynamic profile of human simulated epithelial lining fluid(ELF) exposures of AMK-I and intravenous meropenem alone and in combination against ACBN with variable susceptibility profiles...
July 31, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28756823/determination-of-carbapenem-resistance-mechanism-in-clinical-isolates-of-pseudomonas-aeruginosa-isolated-from-burn-patients-in-tehran-iran
#18
Akbar Mirsalehian, Davood Kalantar-Neyestanaki, Morovat Taherikalani, Fereshteh Jabalameli, Mohammad Emaneini
Carbapenems are the most important therapeutic options that effect against serious infections caused by multidrug resistant Pseudomonas aeruginosa (MDR-PA) isolates. Carbapenems resistant isolates of P. aeruginosa are increasing worldwide. The aim of this study was to determine the carbapenem resistance mechanisms in clinical P. aeruginosa isolates from burn patients, in Tehran, Iran. A total of 53 non-duplicated isolates of carbapenem-resistant P. aeruginosa were collected from burn patients. The presence of carbapenemase genes were determined by PCR...
September 2017: Journal of Epidemiology and Global Health
https://www.readbyqxmd.com/read/28753737/uplc-ms-ms-method-for-therapeutic-drug-monitoring-of-ten-antibiotics-used-in-intensive-care-units
#19
Nahed El-Najjar, Julian Hösl, Thomas Holzmann, Jonathan Jantsch, André Gessner
Large variation in the levels of different ß-lactams and other antibiotics used in critically ill patients has been documented. The aim of this study is to establish and validate a fast ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) method for the simultaneous analysis of ten antibiotics (Meropenem, Cefepime, Ceftazidime, Piperacillin, Benzylpenicillin, Ampicillin, Flucloxacillin, Linezolid, and Sulfamethoxazole/Trimethoprim) in human plasma according to European Medicines Agency (EMA) guidelines...
July 28, 2017: Drug Testing and Analysis
https://www.readbyqxmd.com/read/28749392/evaluation-of-evidence-for-pharmacokinetics-pharmacodynamics-based-dose-optimization-of-antimicrobials-for-treating-gram-negative-infections-in-neonates
#20
REVIEW
Nusrat Shafiq, Samir Malhotra, Vikas Gautam, Harpreet Kaur, Pravin Kumar, Sourabh Dutta, Pallab Ray, Nilima A Kshirsagar
BACKGROUND & OBJECTIVES: Neonates present a special subgroup of population in whom optimization of antimicrobial dosing can be particularly challenging. Gram-negative infections are common in neonates, and inpatient treatment along with critical care is needed for the management of these infections. Dosing recommendations are often extrapolated from evidence generated in older patient populations. This systematic review was done to identify the knowledge gaps in the pharmacokinetics-pharmacodynamics (PK-PD)-based optimized dosing schedule for parenteral antimicrobials for Gram-negative neonatal infections...
March 2017: Indian Journal of Medical Research
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