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https://www.readbyqxmd.com/read/28416552/in-vivo-pharmacodynamic-target-assessment-of-eravacycline-against-escherichia-coli-in-a-murine-thigh-infection-model
#1
Miao Zhao, Alexander J Lepak, Karen Marchillo, Jamie VanHecker, David R Andes
Eravacycline is a novel fluorocycline antibiotic with potent activity against a broad range of pathogens, including strains with tetracycline and other drug-resistance phenotypes. The goal of the studies was to determine which pharmacokinetic/pharmacodynamic (PK/PD) parameter and magnitude best correlated with efficacy in the murine thigh infection model. Six E. coli were utilized for the studies. MICs were determined using CLSI methods and ranged from 0.125 to 0.25 mg/L. A neutropenic murine thigh infection model was utilized for all treatment studies...
April 17, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28404756/infusion-compatible-antibiotic-formulations-for-rapid-administration-to-improve-outcomes-in-cancer-outpatients-with-severe-sepsis-and-septic-shock-the-sepsis-stat-pack
#2
Jason D Goldman, Amelia Gallaher, Rupali Jain, Zach Stednick, Manoj Menon, Michael J Boeckh, Paul S Pottinger, Stephen M Schwartz, Corey Casper
Background: Patients with cancer are at high risk for severe sepsis and septic shock (SS/SSh), and a delay in receiving effective antibiotics is strongly associated with mortality. Delays are due to logistics of clinic flow and drug delivery. In an era of increasing antimicrobial resistance, combination therapy may be superior to monotherapy for patients with SS/SSh. Patients and Methods: At the Seattle Cancer Care Alliance, we implemented the Sepsis STAT Pack (SSP) program to simplify timely and effective provision of empiric antibiotics and other resuscitative care to outpatients with cancer with suspected SS/SSh before hospitalization...
April 2017: Journal of the National Comprehensive Cancer Network: JNCCN
https://www.readbyqxmd.com/read/28373605/a-pseudomonas-aeruginosa-quorum-sensing-autoinducer-analog-enhances-the-activity-of-antibiotics-against-resistant-strains
#3
Takashi Amoh, Keiji Murakami, Reiko Kariyama, Kenji Hori, Yasuhiko Irie, Darija Viducic, Katsuhiko Hirota, Jun Igarashi, Hiroaki Suga, Hiromi Kumon, Yoichiro Miyake
In this study, we have investigated the effects of the newly synthesized analog of Pseudomonas aeruginosa quorum-sensing autoinducer named AIA-1 (autoinducer analog) against antibiotic-resistant bacteria. In vitro susceptibility and killing assays for P. aeruginosa PAO1ΔoprD mutant and clinical isolates were performed by using antibiotics and AIA-1. In an in vivo assay, a luminescent carbapenem-resistant strain derived from PAO1ΔoprD was injected into neutropenic ICR mice and bioluminescence images were acquired after the treatment with antibiotics and AIA-1...
2017: Journal of Medical Investigation: JMI
https://www.readbyqxmd.com/read/28365897/fluoroquinolone-prophylaxis-in-autologous-hematopoietic-stem-cell-transplant-recipients
#4
Dipenkumar Modi, Hyejeong Jang, Seongho Kim, Malini Surapaneni, Kamya Sankar, Abhinav Deol, Lois Ayash, Divaya Bhutani, Lawrence G Lum, Voravit Ratanatharathorn, Richard Manasa, Kendra Mellert, Pranatharthi Chandrasekar, Joseph P Uberti
PURPOSE: Although fluoroquinolone prophylaxis is frequently utilized in autologous hematopoietic stem cell transplant (AHSCT) patients, its impact on morbidity and mortality is uncertain. This study investigates the role of quinolone prophylaxis after AHSCT in recent years. METHODS: We conducted a retrospective review of 291 consecutive adult patients who underwent AHSCT for malignant disorders, between June 2013 and January 2015. Outcomes were compared between patients who received norfloxacin prophylaxis and those who did not...
April 2, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/28355465/clinical-considerations-in-the-early-treatment-of-invasive-mould-infections-and-disease
#5
Toine Mercier, Johan Maertens
Different therapeutic strategies for invasive fungal diseases have been explored, each with particular strengths and weaknesses. Broad-spectrum antifungal prophylaxis seems logical, but selective use is important due to its substantial disadvantages, including interference with diagnostic assays, selection for resistance, drug toxicity and drug-drug interactions. Antimould prophylaxis should be restricted to high-risk groups, such as patients undergoing intensive chemotherapy for acute myeloid leukaemia or myelodysplastic syndrome, allogeneic HSCT patients with prior invasive fungal infection, graft-versus-host-disease or extended neutropenia, recipients of a solid organ transplant, or patients with a high-risk inherited immunodeficiency...
March 1, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28353453/a-change-for-the-antibacterial-treatment-policy-to-decrease-carbapenem-consumption-at-a-haematopoietic-stem-cell-transplantation-centre
#6
Gõkhan Metan, Leylagül Kaynar, Nuran Yozgat, Ferhan Elmali, Cemile Altay Kürkçüoglu, Emine Alp, Mustafa Çetin
After experiencing a high rate of carbapenem-resistant Gram-negative bacilli infections in febrile neutropenic patients, a two-stage intervention was introduced in the haematopoietic stem cell transplantation (HSCT) centre. During the first eight months of 2014, carbapenems remained the first choice for the empirical treatment of febrile neutropenia while the use of piperacillin/tazobactam (TZP) was encouraged in patients with stable clinical condition. When blood cultures were reported as negative and the patient was clinically stable the carbapenem/TZP treatment was stopped regardless of continuous fever and neutrophil count...
March 1, 2017: Le Infezioni in Medicina
https://www.readbyqxmd.com/read/28351828/high-infection-related-mortality-in-pediatric-acute-myeloid-leukemia-without-preventive-antibiotics-and-antifungals-retrospective-cohort-study-of-a-single-center-from-a-middle-income-country
#7
Emine Zengin, Nazan Sarper, Sema Aylan Gelen, Uğur Demirsoy, Meriban Karadoğan, Suar Çakı Kılıç, Selim Öncel, Emin Sami Arısoy, Devrim Dündar
BACKGROUND: To evaluate infection- related mortality in patients with AML treated without preventive antibiotics and antifungals in a middle-income country. MATERIAL AND METHODS: Infection related mortality was evaluated retrospectively in 49 pediatric patients. RESULTS: A total of 173 chemotherapy courses were administered as first-line chemotherapy. Four patients died in the induction; one patient due to intracranial bleeding, two patients due to typhlitis and one patient due to invasive fungal infection with pulmonary vascular invasion and massive bleeding...
March 29, 2017: Turkish Journal of Haematology: Official Journal of Turkish Society of Haematology
https://www.readbyqxmd.com/read/28314653/assessment-of-risk-factors-for-candidemia-in-non-neutropenic-patients-hospitalized-in-internal-medicine-wards-a-multicenter-study
#8
M Falcone, G Tiseo, C Tascini, A Russo, E Sozio, G Raponi, C Rosin, P Pignatelli, P Carfagna, A Farcomeni, R Luzzati, F Violi, F Menichetti, M Venditti
BACKGROUND: An increasing prevalence of candidemia has been reported in Internal Medicine wards (IMWs). The aim of our study was to identify risk factors for candidemia among non-neutropenic patients hospitalized in IMWs. METHODS: A multicenter case-control study was performed in three hospitals in Italy. Patients developing candidemia (cases) were compared to patients without candidemia (controls) matched by age, time of admission and duration of hospitalization...
March 14, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28303897/synergistic-efficacy-of-bisbenzimidazole-and-carbonyl-cyanide-3-chlorophenylhydrazone-combination-against-mdr-bacterial-strains
#9
Devapriya Sinha, Stuti Pandey, Raja Singh, Vinod Tiwari, Kirti Sad, Vibha Tandon
Activation of efflux systems and the formation of biofilm are majorly adapted by microbes to resist antimicrobial agents. PPEF (bisbenzimidazole) targeting topoisomerase IA is observed to be an effective bactericidal agent against both Gram-positive and Gram-negative bacterial strains and thus can be developed as potent broad-spectrum antibiotic against MDR strains. PPEF treatment did not cause target specific mutation instead it leads to up-regulation of efflux gene in E. coli K12 as a mechanism of resistance...
March 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28283020/carbapenem-resistant-klebsiella-pneumoniae-in-high-risk-haematological-patients-factors-favouring-spread-risk-factors-and-outcome-of-carbapenem-resistant-klebsiella-pneumoniae-bacteremias
#10
Alessandra Micozzi, Giuseppe Gentile, Clara Minotti, Claudio Cartoni, Saveria Capria, Daniele Ballarò, Stefania Santilli, Emanuele Pacetti, Sara Grammatico, Giampaolo Bucaneve, Robin Foà
BACKGROUND: Carbapenem-resistant Klebsiella pneumoniae (CRKP) spread and infections in patients with haematological malignancies are a serious concern especially in endemic areas. Treatment failures and delay in appropriate therapy for CRKP infections are frequent and the mortality rate associated with CRKP bacteremia in neutropenic haematological patients is reported about 60%. METHODS: Haematological patients harboring CRKP hospitalized between February 2012 and May 2013 in an Italian Teaching hospital were examined...
March 10, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28282274/improving-the-management-of-patients-with-low-risk-neutropenic-fever-at-the-cleveland-clinic-taussig-cancer-institute
#11
Lindsey Martin Goodman, Bassam Estfan, Alberto Montero, Girish Kunapareddy, Jessica Lau, Erika Gallagher, Carolyn Best, Barb Tripp, Machelle Moeller, Brian Bolwell, James Stevenson
PURPOSE: Neutropenic fever (NF) is an oncologic emergency and has resulted historically in inpatient management. The Multinational Association for Supportive Care in Cancer (MASCC) score can be used to identify patients with NF at a low risk of complications who can be managed safely as outpatients. Despite established guidelines supporting outpatient management of low-risk neutropenic fever (LRNF), provider awareness is low, and inpatient admission for intravenous antibiotics continues to be standard of care...
March 2017: Journal of Oncology Practice
https://www.readbyqxmd.com/read/28264844/in-vivo-pharmacokinetic-and-pharmacodynamic-profiles-of-antofloxacin-against-klebsiella-pneumoniae-in-a-neutropenic-murine-lung-infection-model
#12
Yu-Feng Zhou, Meng-Ting Tao, Wei Huo, Xiao-Ping Liao, Jian Sun, Ya-Hong Liu
Antofloxacin is a novel broad-spectrum fluoroquinolone under development for the treatment of infections caused by a diverse group of bacterial species. We explored the pharmacodynamic (PD) profile and targets of antofloxacin against seven Klebsiella pneumoniae isolates using a neutropenic murine lung infection model. Plasma and bronchopulmonary pharmacokinetic studies were conducted at single subcutaneous doses of 2.5, 10, 40 and 160 mg/kg. Mice were infected intratracheally with K. pneumoniae and treated using 2-fold increasing total doses of antofloxacin ranging from 2...
March 6, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28251179/fluorocycline-tp-271-is-potent-against-complicated-community-acquired-bacterial-pneumonia-pathogens
#13
Trudy H Grossman, Corey Fyfe, William O'Brien, Meredith Hackel, Mary Beth Minyard, Ken B Waites, Jacques Dubois, Timothy M Murphy, Andrew M Slee, William J Weiss, Joyce A Sutcliffe
TP-271 is a novel, fully synthetic fluorocycline antibiotic in clinical development for the treatment of respiratory infections caused by susceptible and multidrug-resistant pathogens. TP-271 was active in MIC assays against key community respiratory Gram-positive and Gram-negative pathogens, including Streptococcus pneumoniae (MIC90 = 0.03 µg/ml), methicillin-sensitive Staphylococcus aureus (MSSA; MIC90 = 0.25 µg/ml), methicillin-resistant S. aureus (MRSA; MIC90 = 0.12 µg/ml), Streptococcus pyogenes (MIC90 = 0...
January 2017: MSphere
https://www.readbyqxmd.com/read/28245405/-efficacy-and-safety-of-low-dose-amphotericin-b-in-different-antifungal-strategies-for-treatment-of-invasive-fungal-disease-in-patients-with-hematological-malignancies
#14
Lan Yang, Xiang-Shu Jin, Jing-He Li, Jing Liu, Wei Guan, Hong-Hao Gao, Yu Jing
OBJECTIVE: To evaluate the efficacy and safety of low-dose amphotericin B (AmB) in different antifungal strategies for treatment of invasive fungal disease(IFD) in patients with hematologic malignancies. Metheds: The clinical dada of the patients were collected and analyzed retrospectively and the levels of creatinine (Cr), urea nitrogen (BUN) and potassium (K(+)) before and after using low-dose AmB were compared and statistically analyzed. RESULTS: Among 97 cases, 2 cases were diagnosed as invasive fungal disease (IFD), 11 cases were diagnosed as clinical probable IFD, 15 cases were diagnosed as possible IFD, 69 cases were undefined IFD...
February 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28205160/non-fermentative-gram-negative-rods-bacteremia-in-children-with-cancer-a-14-year-single-center-experience
#15
D Averbuch, C Avaky, M Harit, P Stepensky, I Fried, T Ben-Ami, V Temper, Y Peled, H Troen, R Masarwa, W Abu Ahmad, M Weintraub, S Revel-Vilk, D Engelhard
PURPOSE: Data on non-fermentative Gram-negative rods (NFGNR) bacteremia in children with malignancies are limited. The aim of this study was to present clinical picture, antimicrobial susceptibility pattern, risk factors for resistance and outcome in NFGNR bacteremia in children with cancer. METHODS: All episodes of NFGNR bacteremia occurring during 2001-2014 in children with cancer in a tertiary-care hospital were retrospectively analyzed. Pseudomonas and Acinetobacter spp...
February 15, 2017: Infection
https://www.readbyqxmd.com/read/28193651/in-vivo-pharmacodynamic-evaluation-of-omadacycline-ptk-0796-against-streptococcus-pneumoniae-in-the-murine-pneumonia-model
#16
Alexander J Lepak, Miao Zhao, Karen Marchillo, Jamie VanHecker, David R Andes
Omadacycline is a novel aminomethylcylcine antibiotic in clinical development for community acquired bacterial pneumonia (CABP). We used a neutropenic murine pneumonia infection model to characterize the in vivo pharmacodynamic activity of omadacycline against Streptococcus pneumoniae Four strains with varying phenotypic resistance to other antimicrobials including tetracyclines were utilized. Drug concentration measurements were performed in the plasma and epithelial lining fluid (ELF) after administration of 0...
February 13, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28160269/infections-in-cancer-patients-with-solid-tumors-a-review
#17
REVIEW
Kenneth V I Rolston
Solid tumors are much more common than hematologic malignancies. Although severe and prolonged neutropenia is uncommon, several factors increase the risk of infection in patients with solid tumors, and the presence of multiple risk factors in the same patient is not uncommon. These include obstruction (most often caused by progression of the tumor), disruption of natural anatomic barriers such as the skin and mucosal surfaces, and treatment-related factors such as chemotherapy, radiation, diagnostic and/or therapeutic surgical procedures, and the increasing use of medical devices such as various catheters, stents, and prostheses...
March 2017: Infectious Diseases and Therapy
https://www.readbyqxmd.com/read/28152702/improving-the-treatment-of-patients-with-low-risk-neutropenic-fever-a-quality-improvement-project-at-the-cleveland-clinic-taussig-cancer-institute-tci
#18
Jessica Lau, Erika M Gallagher, Machelle Moeller, Carolyn Best, James Stevenson
101 Background: NF is an oncologic emergency and has historically resulted in inpatient (inpt) management. The Multinational Association for Supportive Care in Cancer (MASCC) score can be used to identify NF pts at LR for complications who can be safely managed in the outpatient (outpt) setting. Despite established guidelines supporting outpt management of LRNF, provider awareness is low and inpt admission for intravenous antibiotics (abx) continues to be standard of care. METHODS: A multidisciplinary team performed a QI project to improve management of LRNF (baseline cohort of LRNF pts treated from Jan - Mar 2014, N = 13)...
March 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28150580/biocompatible-biodegradable-polymeric-antibacterial-nanoparticles-for-enhancing-the-effects-of-a-third-generation-cephalosporin-against-resistant-bacteria
#19
Sana Mushtaq, Jawad Akbar Khan, Faiz Rabbani, Usman Latif, Muhammad Arfan, Muhammad Arfat Yameen
PURPOSE: In the present study, enhancement of the the antibacterial activity of ceftriaxone against Gram-positive (meticillin-resistant Staphylococcus aureus; MRSA) and Gram-negative (Escherichia coli) bacteria with a biodegradable polymer was attempted. METHODOLOGY: MRSA and E. coli were collected and identified by biochemical and molecular tests. Blank and ceftriaxone-loaded chitosan nanoparticles (CNPs) were prepared by the ionic gelation method. In vitro antibiotic-susceptibility studies were performed by disc diffusion, agar well plate method, Etest and time-kill assay...
March 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28079821/febuxostat-induced-agranulocytosis-in-an-end-stage-renal-disease-patient-a-case-report
#20
Xue Er Poh, Chien-Te Lee, Sung-Nan Pei
INTRODUCTION: Febuxostat, a nonpurine xanthine oxidase inhibitor, is approved as the first-line urate-lowering therapy in gout patients with normal renal function or mild to moderate renal impairment. The most common adverse effects of febuxostat are liver function test abnormalities, diarrhea, and skin rash. However, there is insufficient data in patients with severe renal impairment and end-stage renal disease (ESRD). We report the first case, to our knowledge, in which agranulocytosis developed after febuxostat treatment in an ESRD patient...
January 2017: Medicine (Baltimore)
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