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https://www.readbyqxmd.com/read/28329350/multicenter-evaluation-of-ceftolozane-tazobactam-for-serious-infections-caused-by-carbapenem-resistant-pseudomonas-aeruginosa
#1
Jose M Munita, Samuel L Aitken, William R Miller, Federico Perez, Rossana Rosa, Luis A Shimose, Paola N Lichtenberger, Lilian M Abbo, Rupali Jain, Masayuki Nigo, Audrey Wanger, Rafael Araos, Truc T Tran, Javier Adachi, Robert Rakita, Samuel Shelburne, Robert A Bonomo, Cesar A Arias
A multicenter, retrospective study of patients infected with carbapenem-resistant Pseudomonas aeruginosa who were treated with ceftolozane/tazobactam was performed. Among 35 patients, pneumonia was the most common indication and treatment was successful in 26 (74%). Treatment failure was observed in all cases where isolates demonstrated ceftolozane-tazobactam minimum inhibitory concentrations ≥8 μg/mL.
March 14, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28321140/y-site-incompatibility-between-premix-concentrations-of-vancomycin-and-piperacillin-tazobactam-do-current-compatibility-testing-methodologies-tell-the-whole-story
#2
Wesley D Kufel, Christopher D Miller, Paul R Johnson, Kaleigh Reid, James J Zahra, Robert W Seabury
Background: Published literature has demonstrated commercially available premix vancomycin (5 mg/mL) and piperacillin-tazobactam (67.5 mg/mL) as physically compatible via simulated Y-site methodology. Compatibility via actual Y-site infusion has yet to be established. Objective: To assess and compare the compatibility of commercially available premix concentrations of vancomycin and piperacillin-tazobactam via simulated and actual Y-site evaluation. Methods: Vancomycin and piperacillin-tazobactam were tested using simulated and actual Y-site infusion methodologies...
February 2017: Hospital Pharmacy
https://www.readbyqxmd.com/read/28320728/mutations-at-arg220-and-thr237-in-per-2-%C3%AE-lactamase-impact-on-conformation-activity-and-susceptibility-to-inhibitors
#3
Melina Ruggiero, Lucrecia Curto, Florencia Brunetti, Eric Sauvage, Moreno Galleni, Pablo Power, Gabriel Gutkind
PER-2 accounts for up to 10% of oxyimino-cephalosporin resistance in Klebsiella pneumoniae and Escherichia coli in Argentina, and hydrolyzes both cefotaxime and ceftazidime with high catalytic efficiencies (kcat/Km). Through crystallographic analyses, we recently proposed the existence of a hydrogen-bond network connecting Ser70-Gln69-oxyanion water-Thr237-Arg220 that might be important for the activity and inhibition of the enzyme. Mutations at Arg244 in most class A β-lactamases (as TEM and SHV) reduce susceptibility to mechanism-based inactivators, and Arg220 in PER β-lactamases is equivalent to Arg244...
March 20, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28320724/piperacillin-tazobactam-versus-other-antibacterial-agents-for-treatment-of-bloodstream-infections-due-to-ampc-beta-lactamase-producing-enterobacteriaceae
#4
Lucy Cheng, Brian C Nelson, Monica Mehta, Nikhil Seval, Sarah Park, Marla J Giddins, Qiuhu Shi, Susan Whittier, Angela Gomez-Simmonds, Anne-Catrin Uhlemann
In vivo induction of AmpC beta-lactamases produces high-level resistance to many beta-lactam antibiotics in Enterobacteriaceae, often resulting in the use of carbapenems or cefepime (FEP). The clinical effectiveness of piperacillin-tazobactam (TZP), a weak inducer of AmpC beta-lactamases, is poorly understood. Here we conducted a case-control study of adult inpatients with bloodstream infections (BSIs) due to Enterobacter, Serratia, or Citrobacter spp. from 2009 to 2015 to assess outcomes following treatment with TZP compared to FEP or meropenem (MEM)...
March 20, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28315874/multiple-drug-hypersensitivity
#5
Werner J Pichler, Yuttana Srinoulprasert, James Yun, Oliver Hausmann
Multiple drug hypersensitivity (MDH) is a syndrome that develops as a consequence of massive T-cell stimulations and is characterized by long-lasting drug hypersensitivity reactions (DHR) to different drugs. The initial symptoms are mostly severe exanthems or drug rash with eosinophilia and systemic symptoms (DRESS). Subsequent symptoms due to another drug often appear in the following weeks, overlapping with the first DHR, or months to years later after resolution of the initial presentation. The second DHR includes exanthema, erythroderma, DRESS, Stevens-Johnson syndrome/toxic epidermal necrolysis (SJS/TEN), hepatitis, and agranulocytosis...
March 18, 2017: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/28314920/-new-antibiotics-standstill-or-progress
#6
J Rademacher, T Welte
The development of resistance to antibiotics has been ignored for a long time. But nowadays, increasing resistance is an important topic. For a decade no new antibiotics had been developed and it is not possible to quickly close this gap of new resistance and no new drugs. This work presents six new antibiotics (ceftaroline, ceftobiprole, solithromycin, tedizolid, ceftolozane/tazobactam, ceftazidime/avibactam). In part, only expert opinions are given due to lack of study results.The two 5th generation cephalosporins ceftaroline and ceftobiprole have beside their equivalent efficacy to ceftriaxone (ceftaroline) and cefipim (ceftobiprole) high activity against MRSA...
March 17, 2017: Medizinische Klinik, Intensivmedizin und Notfallmedizin
https://www.readbyqxmd.com/read/28303057/retrospective-survey-and-evaluation-of-first-line-antibiotics-for-chemotherapy-induced-febrile-neutropenia-in-patients-with-acute-myeloid-leukemia
#7
Naoki Mukoyama, Marie Nakashima, Koichi Miyamura, Akira Yoshimi, Yukihiro Noda, Kazuhiro Mori
Patients with acute leukemia are susceptible to chemotherapy-induced severe myelosuppression, and therefore are at a high risk for febrile neutropenia (FN). In such cases, the use of broad-spectrum antibiotics such as fourth-generation cephalosporins and carbapenems is recommended as first-line antimicrobial treatment; however, the effectiveness of these agents in patients with acute myeloid leukemia (AML) has not been investigated in detail. We retrospectively examined and evaluated the effectiveness of first-line antibiotic treatment regimens for chemotherapy-induced FN in patients with AML in Japanese Red Cross Nagoya Daiichi Hospital...
February 2017: Nagoya Journal of Medical Science
https://www.readbyqxmd.com/read/28289522/device-associated-infection-rates-mortality-length-of-stay-and-bacterial-resistance-in-intensive-care-units-in-ecuador-international-nosocomial-infection-control-consortium-s-findings
#8
Estuardo Salgado Yepez, Maria M Bovera, Victor D Rosenthal, Hugo A González Flores, Leonardo Pazmiño, Francisco Valencia, Nelly Alquinga, Vanessa Ramirez, Edgar Jara, Miguel Lascano, Veronica Delgado, Cristian Cevallos, Gasdali Santacruz, Cristian Pelaéz, Celso Zaruma, Diego Barahona Pinto
AIM: To report the results of the International Nosocomial Infection Control Consortium (INICC) study conducted in Quito, Ecuador. METHODS: A device-associated healthcare-acquired infection (DA-HAI) prospective surveillance study conducted from October 2013 to January 2015 in 2 adult intensive care units (ICUs) from 2 hospitals using the United States Centers for Disease Control/National Healthcare Safety Network (CDC/NHSN) definitions and INICC methods. RESULTS: We followed 776 ICU patients for 4818 bed-days...
February 26, 2017: World Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28289362/study-on-biofilm-formation-in-burn-wound-infection-in-a-pediatric-hospital-in-chennai-india
#9
M Ramakrishnan, S Putli Bai, M Babu
Infection is one of the major causes of death in pediatric burns in India. This work was conducted in an exclusive Children's Hospital (KKCTH) with a total of 220 beds, of which ten beds in the burn unit and two isolation beds in the 28-bed PICU are for burns patients (more than 20% TBSA burns) with sepsis. In this study, 30 burn wound swab isolates obtained from 14 pediatric burns patients (admitted to the burns ward and transferred to PICU) from November 2013 to March 2014 were investigated. Cultures were done on the first day for all patients and empirical antibiotic administration was started for those with septic burns (14 in total) with piperacillin-tazobactam and vancomycin...
December 31, 2016: Annals of Burns and Fire Disasters
https://www.readbyqxmd.com/read/28280397/pharmacokinetics-and-outcome-of-tazobactam-piperacillin-in-japanese-patients-undergoing-low-flow-continuous-renal-replacement-therapy-dosage-considerations
#10
Hanako Kohama, Takeshi Ide, Kazuro Ikawa, Norifumi Morikawa, Shinichi Nishi
BACKGROUND: Tazobactam/piperacillin (TAZ/PIPC), which is often combined with continuous renal replacement therapy (CRRT), induces renal excretion and is thought to have a high component removal rate for blood purification. CRRT procedures vary depending on the country, region, and institution. It is not clear whether the dose of TAZ/PIPC for use in Japan can be determined based on studies conducted in other countries. Therefore, in this study, we examined the suitability of recommended dose in Japan...
2017: Clinical Pharmacology: Advances and Applications
https://www.readbyqxmd.com/read/28276281/in-vitro-susceptibility-and-resistance-phenotypes-in-contemporary-citrobacter-isolates-in-a-university-hospital-in-crete-greece
#11
Sofia Maraki, Konstantinos Z Vardakas, Viktoria-Eirini Mavromanolaki, Margarita Kyriakidou, George Spais, Diamantis P Kofteridis, George Samonis, Matthew E Falagas
BACKGROUND: Data on Citrobacter spp. susceptibility are scarce. We sought to study the evolution in the susceptibility of 385 Citrobacter spp. at the University Hospital of Heraklion, Crete, Greece during a six-year period (2010-2015). METHODS: Non-duplicate strains isolated from inpatients (intensive care unit, oncology, surgery, internal medicine, paediatrics) and outpatients were studied using Vitek 2. Phenotypic confirmatory tests were applied for detection of β-lactamases and aminoglycoside modifying enzymes...
March 9, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28265870/correlation-between-antibiotic-consumption-and-resistance-of-bloodstream-bacteria-in-a-university-hospital-in-north-eastern-italy-2008-2014
#12
Marta Mascarello, Omar Simonetti, Anna Knezevich, Ludovica Ilaria Carniel, Jacopo Monticelli, Marina Busetti, Paolo Schincariol, Lucio Torelli, Roberto Luzzati
PURPOSE: The spread of multidrug-resistant bacteria is a worrisome problem worldwide. This study investigated the correlation between antibiotic consumption and antimicrobial resistance trends of the most important bacteria causing bacteremia at the University hospital of Trieste, Italy, from 2008 to 2014. METHODS: Antibiotic consumption (Defined Daily Dose-DDD-per 100 patient/days) and antibiotic resistance (percentage of antibiotic intermediate o resistant isolates) were analyzed independently with linear correlation by year...
March 6, 2017: Infection
https://www.readbyqxmd.com/read/28264656/antimicrobial-susceptibilities-of-aerobic-and-facultative-gram-negative-bacilli-isolated-from-chinese-patients-with-urinary-tract-infections-between-2010-and-2014
#13
Qiwen Yang, Hui Zhang, Yao Wang, Zhipeng Xu, Ge Zhang, Xinxin Chen, Yingchun Xu, Bin Cao, Haishen Kong, Yuxing Ni, Yunsong Yu, Ziyong Sun, Bijie Hu, Wenxiang Huang, Yong Wang, Anhua Wu, Xianju Feng, Kang Liao, Yanping Luo, Zhidong Hu, Yunzhuo Chu, Juan Lu, Jianrong Su, Bingdong Gui, Qiong Duan, Shufang Zhang, Haifeng Shao, Robert E Badal
BACKGROUND: The objective of this study was to investigate the distribution and susceptibility of aerobic and facultative Gram-negative bacilli isolated from Chinese patients with UTIs collected within 48 h (community acquired, CA) or after 48 h (hospital acquired, HA) of hospital admission. METHODS: From 2010 to 2014, the minimum inhibitory concentrations (MICs) of 12 antibiotics for 4,332 aerobic and facultative Gram-negative bacilli, sampled in 21 hospitals in 16 cities, were determined by the broth microdilution method...
March 6, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28263710/role-of-piperacillin-tazobactam-as-a-carbapenem-sparing-antibiotic-for-treatment-of-acute-pyelonephritis-due-to-extended-spectrum-%C3%AE-lactamase-producing-escherichia-coli
#14
Young Kyung Yoon, Jong Hun Kim, Jang Wook Sohn, Kyung Sook Yang, Min Ja Kim
Extended-spectrum β-lactamase-producing Escherichia coli (ESBL-Ec) is a frequent cause of acute pyelonephritis (APN), requiring carbapenem therapy. However, alternatives to carbapenems are needed due to the emergence of carbapenemase-producing micro-organisms. The purpose of this study was to compare the clinical efficacy of piperacillin/tazobactam (TZP) versus ertapenem in the treatment of adult patients with APN caused by ESBL-Ec. A retrospective observational study of APN caused by ESBL-Ec susceptible to TZP was performed at a university-affiliated hospital in the Republic of Korea between February 2011 and June 2013...
March 1, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28258920/odontogenic-sinusitis-maxillaris-a-retrospective-study-of-121-cases-with-surgical-intervention
#15
Matthias Zirk, Timo Dreiseidler, Matthias Pohl, Daniel Rothamel, Johannes Buller, Franziska Peters, Joachim E Zöller, Matthias Kreppel
PURPOSE: Otolaryngologists, dentists and maxilla-facial surgeons see patients suffering from odontogenic maxillary sinusitis on a daily routine. The study was performed to investigate the different origins of the odontogenic maxillary sinusitis ranging from periodontitis to augmentative implant surgery. Furthermore, the microbial flora of purulent odontogenic maxillary sinusitis was analyzed in order to present a proper antibiotic treatment in addition to a surgical approach. MATERIALS AND METHODS: A retrospective study was performed, analyzing the clinical trials of 121 patients suffering from odontogenic maxillary sinusitis who undergone surgery...
February 4, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28256471/risk-factors-associated-with-fluoroquinolone-resistant-enterococcal-urinary-tract-infections-in-a-tertiary-care-university-hospital-in-north-india
#16
Tuhina Banerjee, Shampa Anupurba
BACKGROUND & OBJECTIVES: Fluoroquinolone resistance in both Gram-positive and Gram-negative bacteria has increased with the widespread use of fluoroquinolones. Fluoroquinolone resistance in Gram-negative bacilli has been widely studied, though staphylococci and enterococci are also notably resistant. Enterococci being the second most common cause of healthcare-associated urinary tract infections (UTIs) fluoroquinolones are often the drug of choice. This study was undertaken to assess the risk factors associated with fluoroquinolone-resistant enterococcal UTI in a tertiary level health facility in north India...
October 2016: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28247443/acute-kidney-injury-in-patients-treated-with-iv-beta-lactam-beta-lactamase-inhibitor-combinations
#17
W Cliff Rutter, David S Burgess
STUDY OBJECTIVE: Increased acute kidney injury (AKI) incidence has been reported in patients receiving piperacillin-tazobactam (PTZ) therapy compared to other beta-lactams. This study sought to determine if the addition of beta-lactamase inhibitors impact AKI incidence by comparing patients treated with PTZ or ampicillin-sulbactam (SAM). DESIGN: Retrospective cohort study. SETTING: Large academic tertiary care hospital. PATIENTS: Overall, 2,448 patients received PTZ (n=1,836) or SAM (n=612) for at least 48 hours between September 1, 2007 and September 30, 2015...
March 1, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/28240914/general-method-to-determine-the-flux-of-charged-molecules-through-nanopores-applied-to-%C3%AE-lactamase-inhibitors-and-ompf
#18
Ishan Ghai, Alessandro Pira, Mariano Andrea Scorciapino, Igor Bodrenko, Lorraine Benier, Matteo Ceccarelli, Mathias Winterhalter, Richard Wagner
A major challenge in the discovery of the new antibiotics against Gram-negative bacteria is to achieve sufficiently fast permeation in order to avoid high doses causing toxic side effects. So far, suitable assays for quantifying the uptake of charged antibiotics into bacteria are lacking. We apply an electrophysiological zero-current assay using concentration gradients of β-lactamase inhibitors combined with single-channel conductance to quantify their flux rates through OmpF. Molecular dynamic simulations provide in addition details on the interactions between the nanopore wall and the charged solutes...
March 6, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28240688/repeated-piperacillin-tazobactam-plasma-concentration-measurements-in-severely-obese-versus-nonobese-critically-ill-septic-patients-and-the-risk-of-under-and-overdosing
#19
Boris Jung, Martin Mahul, Dominique Breilh, Rachel Legeron, Jeremy Signe, Helene Jean-Pierre, Anne-Catrin Uhlemann, Nicolas Molinari, Samir Jaber
OBJECTIVE: Obesity and critical illness modify pharmacokinetics of antibiotics, but piperacillin-tazobactam continuous IV infusion pharmacokinetics has been poorly studied in obese critically ill patients. We aimed to compare pharmacokinetics of piperacillin in severely obese and nonobese patients with severe sepsis or septic shock. We hypothesized that plasma concentration variability would expose the critically ill to both piperacillin under and overdosing. METHODS: Prospective comparative study...
February 24, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28237981/ex-vivo-ceftolozane-tazobactam-clearance-during-continuous-renal-replacement-therapy
#20
Weerachai Chaijamorn, Alexander R Shaw, Susan J Lewis, Bruce A Mueller
BACKGROUND/AIMS: To determine ceftolozane/tazobactam transmembrane clearances (CLTM) in continuous hemofiltration (CHF) and continuous hemodialysis (CHD) and to determine optimal ceftolozane/tazobactam dosing regimens for patients receiving continuous renal replacement therapy (CRRT). METHOD: Validated, ex vivo CHF and CHD bovine blood models using polysulfone (HF1400) and AN69 (Multiflow 150-M) hemofilters were used to evaluate adsorption and CLTM at different effluent flow rates...
February 25, 2017: Blood Purification
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