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neutropenic infection

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https://www.readbyqxmd.com/read/28538389/antimicrobial-resistance-patterns-clinical-features-and-risk-factors-for-septic-shock-and-death-of-nosocomial-e-coli-bacteremia-in-adult-patients-with-hematological-disease-a-monocenter-retrospective-study-in-china
#1
Jie Ma, Ning Li, Yajie Liu, Chong Wang, Xiaoyan Liu, Shengmei Chen, Xinsheng Xie, Silin Gan, Meng Wang, Weijie Cao, Fang Wang, Yanfan Liu, Dingming Wan, Ling Sun, Hui Sun
The aim of this retrospective analysis was to evaluate the antimicrobial resistance, clinical features, and risk factors for septic shock and death of nosocomial E coli bacteremia in adult patients in a single hematological center in China. A retrospective case-control study of 157 adult hematological patients with 168 episodes of E coli bacteremia was initiated from April 2012 to July 2015. Antimicrobial susceptibility as well as antimicrobial co-resistance rates were analyzed. Clinical features and outcomes were also studied...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28510695/effects-of-an-autoinducer-analogue-on-antibiotic-tolerance-in-pseudomonas-aeruginosa
#2
Takashi Amoh, Keiji Murakami, Reiko Kariyama, Kenji Hori, Darija Viducic, Katsuhiko Hirota, Jun Igarashi, Hiroaki Suga, Matthew R Parsek, Hiromi Kumon, Yoichiro Miyake
Objectives: Antibiotic tolerance causes chronic, refractory and persistent infections. In order to advance the development of a new type of drug for the treatment of infectious diseases, we herein investigated the effects of a newly synthesized analogue of the Pseudomonas aeruginosa quorum-sensing autoinducer named AIA-1 ( a uto i nducer a nalogue) on antibiotic tolerance in P. aeruginosa . Methods: A P. aeruginosa luminescent strain derived from PAO1 was injected into neutropenic ICR mice and bioluminescence images were acquired for a period of time after treatments with antibiotics and AIA-1...
May 16, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28486259/appendicitis-in-a-neutropenic-patient-a-multicentric-retrospective-study
#3
Alberto A Scarpa, Géraldine Hery, Arnaud Petit, Benoit Brethon, Irène Jimenez, Virginie Gandemer, Samuel Abbou, Stéphanie Haouy, Jean Breaud, Marilyne Poiree
To study the management of acute appendicitis in neutropenic patients, we retrospectively reviewed cases of acute appendicitis in neutropenic children treated for cancer. The patients' demographics, medical records, and outcomes were tracked. We compared nonoperative treatment versus emergency or delayed surgery. The cases of 30 patients with a mean age of 8.8 years in 12 French departments of Pediatric Hematology/Oncology between 1995 and 2013 were studied. Most patients (90%) were treated for hematological malignancies...
May 8, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28485360/monotherapy-versus-combination-therapy-against-carbapenem-resistant-gram-negative-bacteria-a-retrospective-observational-study
#4
A Ghafur, V Devarajan, T Raja, J Easow, M A Raja, S Sreenivas, B Ramakrishnan, S G Raman, D Devaprasad, B Venkatachalam, R Nimmagadda
BACKGROUND: Colistin-based combination therapy (CCT) is extensively used to treat infections due to carbapenem-resistant Gram-negative bacteria (CRGNB). There are no data available from India on the usefulness of combination therapy, especially in the oncology setup. The aim of this study was to analyze the clinical effectiveness of CCT over monotherapy in patients with CRGNB. MATERIALS AND METHODS: We conducted a retrospective, observational study of patients with CRGNB bloodstream infections in our oncology and bone marrow transplant center...
October 2016: Indian Journal of Cancer
https://www.readbyqxmd.com/read/28480246/properdin-levels-in-individuals-with-chemotherapy-induced-neutropenia
#5
Artsiom Tsyrkunou, Sarika Agarwal, Bibek Koirala, Robert W Finberg, Rajneesh Nath, Bruce Barton, Stuart M Levitz, Jennifer P Wang, Sanjay Ram
BACKGROUND: Neutrophils produce and carry key components of the alternative pathway (AP) of complement, including properdin (P). The effect of chemotherapy-induced absolute neutropenia on circulating P levels and AP function has not been previously established. METHODS: We prospectively measured free P levels in serum from 27 individuals expected to develop neutropenia after administration of chemotherapy for hematological malignancies in preparation for hematopoietic stem cell transplantation and here describe the relationship between serum P levels and the neutrophil count over time...
2017: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/28472260/whole-genome-sequencing-accurately-identifies-resistance-to-extended-spectrum-%C3%AE-lactams-for-major-gram-negative-bacterial-pathogens
#6
Samuel A Shelburne, Jiwoong Kim, Jose M Munita, Pranoti Sahasrabhojane, Ryan K Shields, Ellen G Press, Xiqi Li, Cesar A Arias, Brandi Cantarel, Ying Jiang, Min S Kim, Samuel L Aitken, David E Greenberg
Background: There is marked interest in using DNA based methods to detect antimicrobial resistance (AMR) with targeted polymerase chain reaction (PCR) approaches increasingly being incorporated into clinical care. Whole genome sequencing (WGS) could offer significant advantages over targeted PCR for AMR detection, particularly for species where mutations are major drivers of AMR. Methods: Illumina MiSeq WGS and broth microdilution (BMD) assays were performed on 90 bloodstream isolates of the four most common gram-negative bacteria causing bloodstream infections in neutropenic patients...
May 3, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28444360/role-of-early-onset-neutropenia-in-development-of-candidemia-in-premature-infants
#7
Nermin Ramy, Mohamed Hashim, Heba Abou Hussein, Happy Sawires, Maha Gaafar, Ayat El Maghraby
Background: The aim of the study was to assess the effect of early-onset neutropenia (EON) on the development of candidemia in premature infants and evaluate other risk factors. Materials and Methods: This prospective study was carried out in a neonatal intensive care unit of Cairo University Hospital. Fifty neutropenic premature infants were matched to 50 non-neutropenics. Subjects were then regrouped into candidemics and non-candidemics to study other risk factors such as central venous catheters, mechanical ventilation, parenteral nutrition, drugs as corticosteroids and others...
April 24, 2017: Journal of Tropical Pediatrics
https://www.readbyqxmd.com/read/28437150/cost-of-cancer-related-neutropenia-or-fever-hospitalizations-united-states-2012
#8
Eric Tai, Gery P Guy, Angela Dunbar, Lisa C Richardson
PURPOSE: Neutropenia and subsequent infections are life-threatening treatment-related toxicities of chemotherapy. Among patients with cancer, hospitalizations related to neutropenic complications result in substantial medical costs, morbidity, and mortality. Previous estimates for the cost of cancer-related neutropenia hospitalizations are based on older and limited data. This study provides nationally representative estimates of the cost of cancer-related neutropenia hospitalizations...
April 24, 2017: Journal of Oncology Practice
https://www.readbyqxmd.com/read/28429890/prevalence-of-the-reversed-halo-sign-in-neutropenic-patients-compared-with-non-neutropenic-patients-data-from-a-single-centre-study-involving-27-patients-with-pulmonary-mucormycosis-2003-2016
#9
Jessie Bourcier, Pierre-Marie Heudes, Florent Morio, Thomas Gastinne, Patrice Chevallier, Fanny Rialland-Battisti, Claire Garandeau, Isabelle Danner-Boucher, Patrice Le Pape, Eric Frampas, Philippe Moreau, Claire Defrance, Pierre Peterlin
Pulmonary mucormycosis (PM) is a life-threatening infection and the diagnosis can be challenging. The objective was to retrospectively explore the value of the RHS in our cohort of 27 patients with mucormycosis and its relation to neutropenia. This was a retrospective study including all patients with a diagnosis of probable or proven invasive PM according to the 2008 EORTC/MSG criteria between September 2003 to April 2016. Fisher's exact test and Mann-Whitney test, with a P-value statistically significant under ...
April 21, 2017: Mycoses
https://www.readbyqxmd.com/read/28416552/in-vivo-pharmacodynamic-target-assessment-of-eravacycline-against-escherichia-coli-in-a-murine-thigh-infection-model
#10
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/28416551/comparative-pharmacodynamics-of-telavancin-and-vancomycin-in-the-neutropenic-murine-thigh-and-lung-infection-models-against-staphylococcus-aureus
#11
Alexander J Lepak, Miao Zhao, David R Andes
The pharmacodynamics of telavancin and vancomycin were compared using neutropenic murine thigh and lung infection models. Four S. aureus strains were included. The telavancin MIC ranged from 0.06 - 0.25 mg/L and vancomycin MIC from 1 - 4 mg/L. Plasma pharmacokinetics of escalating doses (1.25, 5, 20 and 80 mg/kg) of telavancin and vancomycin were linear over the dose range. Epithelial lining fluid (ELF) pharmacokinetics for each drug revealed penetration into the ELF mirrored the percent free fraction (not protein bound) in plasma for each drug...
April 17, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28416540/in-vivo-efficacy-of-liposomal-amphotericin-b-against-wild-type-and-azole-resistant-aspergillus-fumigatus-isolates-in-two-different-immunosuppressed-models-of-invasive-aspergillosis
#12
Seyedmojtaba Seyedmousavi, Johan W Mouton, Willem J G Melchers, Paul E Verweij
Using an immunocompetent murine model of invasive aspergillosis (IA), we previously reported (AAC, 2013, 57, 4, 1866-1871) that the efficacy of liposomal amphotericin B (L-AmB) is not hampered by the presence of azole resistance mutations in Aspergillus fumigatus We here investigated the role of immune suppression, i.e. neutropenic and steroid-treated, on L-AmB efficacy in mice infected with a wild type (WT) and azole-resistant Aspergillus fumigatus harboring TR34/L98H mutation in cyp-51A gene.Survival of treated animals at day 14 in both immunosuppressed models was significantly better than that of non-treated controls...
April 17, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28414291/defects-in-dna-replication-hit-nk-cells-and-neutrophils
#13
Klaus Ley
Patients who present with unique immunological phenotypes provide an opportunity to better understand defect-driving mutations. In this issue of the JCI, Cottineau and colleagues characterize 5 individuals who exhibited growth restriction, facial deformities, and a history of bacterial and viral infection. Further characterization revealed that these patients were neutropenic and NK cell deficient. These phenotypes were unexpectedly linked to mutations in the gene encoding a subunit of the Go-Ichi-Ni-San (GINS) complex, which is essential for DNA replication prior to cell division...
May 1, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28396549/in-vivo-pharmacokinetics-and-pharmacodynamics-of-zti-01-fosfomycin-for-injection-in-the-neutropenic-murine-thigh-infection-model-against-e-coli-k-pneumoniae-and-p-aeruginosa
#14
Alexander J Lepak, Miao Zhao, Brian VanScoy, Daniel S Taylor, Evelyn Ellis-Grosse, Paul G Ambrose, David R Andes
Fosfomycin is a broad-spectrum agent with activity against gram-positive and gram-negative bacteria, including drug-resistant strains, such as extended spectrum beta-lactamase (ESBL)-producing and carbapenem-resistant (CR) gram-negative rods. In the present study, the pharmacokinetic/pharmacodynamic (PK/PD) activity of ZTI-01 (fosfomycin for injection) was evaluated in the neutropenic murine thigh infection model against 5 E. coli (EC), 3 K. pneumoniae (KPN), and 2 P. aeruginosa (PSA) strains, including a subset with ESBL and CR phenotype...
April 10, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28378240/candida-albicans-germ-tube-antibody-evaluation-of-a-new-automatic-assay-for-diagnosing-invasive-candidiasis-in-icu-patients
#15
Manuel Parra-Sánchez, Ismail Zakariya-Yousef Breval, Carmen Castro Méndez, Silvia García-Rey, Ana Loza Vazquez, Alejandro Úbeda Iglesias, Desiree Macías Guerrero, Ana Romero Mejías, Cristobal León Gil, Estrella Martín-Mazuelos
Testing for Candida albicans germ-tube antibody IFA IgG assay (CAGTA) is used to detect invasive candidiasis infection. However, most suitable assays lack automation and rapid single-sample testing. The CAGTA assay was adapted in an automatic monotest system (invasive candidiasis [CAGTA] VirClia(®) IgG monotest (VirClia(®)), a chemiluminescence assay with ready-to-use reagents that provides a rapid objective result. CAGTA assay was compared with the monotest automatic VirClia(®) assay in order to establish the diagnostic reliability, accuracy, and usefulness of this method...
April 4, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28373605/a-pseudomonas-aeruginosa-quorum-sensing-autoinducer-analog-enhances-the-activity-of-antibiotics-against-resistant-strains
#16
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/28366613/secular-trends-of-bloodstream-infections-during-neutropenia-in-15-181-haematopoietic-stem-cell-transplants-13-year-results-from-a-european-multicentre-surveillance-study-onko-kiss
#17
Maja Weisser, Christian Theilacker, Sarah Tschudin Sutter, Regina Babikir, Hartmut Bertz, Tim Götting, Markus Dettenkofer, Winfried V Kern, Andreas F Widmer
OBJECTIVES: Antibacterial resistance is emerging in patients undergoing haematopoietic stem cell transplantation (HSCT) and most data on the epidemiology of bloodstream infections (BSI)-causing pathogens come from retrospective, single-centre studies. Aim of this study is to investigate trends in the epidemiology of BSI in HSCT recipients from a prospective multicentre cohort. METHODS: From 2002 to 2014 we investigated changes in the incidence of causative organisms of BSI during neutropenia among adult HSCT recipients...
March 30, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28365897/fluoroquinolone-prophylaxis-in-autologous-hematopoietic-stem-cell-transplant-recipients
#18
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/28363097/gastrointestinal-emergencies-in-critically-ill-cancer-patients
#19
Delphine Lebon, Lucie Biard, Sophie Buyse, David Schnell, Etienne Lengliné, Camille Roussel, Jean-Marc Gornet, Nicolas Munoz-Bongrand, Laurent Quéro, Matthieu Resche-Rigon, Elie Azoulay, Emmanuel Canet
PURPOSE: To describe gastrointestinal emergencies in cancer patients. METHODS: All cancer patients admitted to the medical ICU of Saint-Louis Hospital for an acute abdominal syndrome during the study period (1997-2011) were included. RESULTS: A total of 164 patients were included. The most common diagnoses were: neutropenic enterocolitis (NE) (n=54, 33%), infectious colitis and peritonitis (n=51, 31%), bowel infiltration by malignancy (n=14, 9%), and mucosal toxicity of chemotherapy (n=12, 7%)...
March 24, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28358279/incidence-of-late-onset-neutropenia-associated-with-rituximab-use-in-b-cell-lymphoma-patients-undergoing-autologous-stem-cell-transplantation
#20
Vincent H Ha, Sunita Ghosh, Catherine Leyshon, Nikki Ryan, Carole R Chambers, Douglas A Stewart
Reversible late onset neutropenia associated with rituximab has been reported with incidence rates varying from 15 to 70% in B cell lymphoma patients receiving autologous stem cell transplantation. We conducted a retrospective descriptive study at one tertiary care center in adult B cell lymphoma patients treated with rituximab and autologous stem cell transplantation between 1 January 2004 and 30 June 2014. Late onset neutropenia was defined as an absolute neutrophil count <1.0 × 10(9) cells/L after neutrophil engraftment and less than six months post autologous stem cell transplantation...
January 1, 2017: Journal of Oncology Pharmacy Practice
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