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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/28416551/comparative-pharmacodynamics-of-telavancin-and-vancomycin-in-the-neutropenic-murine-thigh-and-lung-infection-models-against-staphylococcus-aureus
#2
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/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
#3
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/28395668/delayed-rhabdomyolysis-with-paclitaxel-ifosfamide-carboplatin-and-etoposide-regimen-a-case-report
#4
Alexandra Sokolova, Onyee Chan, Waqas Ullah, Auon Abbas Hamdani, Faiz Anwer
BACKGROUND: High-dose chemotherapy with autologous stem cell rescue is commonly used for the treatment of relapsed germ cell tumors. We report the first case of delayed rhabdomyolysis with paclitaxel, ifosfamide, carboplatin, and etoposide regimen. CASE PRESENTATION: We report a case of a 21-year-old African-American man diagnosed with relapsed non-seminomatous germ cell tumor who received high-dose chemotherapy with carboplatin and etoposide following TIGER trial arm B off-protocol...
April 11, 2017: Journal of Medical Case Reports
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
#5
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
https://www.readbyqxmd.com/read/28355465/clinical-considerations-in-the-early-treatment-of-invasive-mould-infections-and-disease
#6
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/28283014/-fungemia-and-septic-arthritis-caused-by-saprochaete-capitata-in-a-patient-with-fanconi-aplastic-anemia-a-case-report
#7
Ömür Mustafa Parkan, Mustafa Altay Atalay, Ayşe Nedret Koç, Çiğdem Pala, Gonca Aydemir, Leylagül Kaynar
Saprochaete capitata (formerly known as Blastoschizomyces capitatus, Trichosporon capitatum, Geotrichum capitatum) is a rare but emerging yeast-like fungus. It is commonly found in environmental sources and can be isolated from skin, gastrointestinal system and respiratory tract of healthy individuals as well. It mainly infects patients with hematological malignancies such as acute myeloid leukemia (AML), especially in the presence of neutropenia; and mortality rates are high in those patients. Although the data about the in vitro antifungal susceptibility are limited, it is being reported that amphotericin B and voriconazole are more effective on S...
January 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28271644/a-case-of-disseminated-infection-with-skin-manifestation-due-to-non-neoformans-and-non-gattii-cryptococcus-in-a-patient-with-refractory-acute-myeloid-leukemia
#8
Sun Seob Park, Hyewon Lee, Weon Seo Park, Sang Hyun Hwang, Sang Il Choi, Mi Hong Choi, Si Won Lee, Eun Jung Ko, Young Ju Choi, Hyeon Seok Eom
Cryptococcus spp. other than Cryptococcus neoformans or Cryptococcus gattii were previously considered saprophytes and thought to be non-pathogenic to humans. However, opportunistic infections associated with non-neoformans and non-gattii species, such as Cryptococcus laurentii and Cryptococcus albidus, have increased over the past four decades. We experienced a case of cryptococcosis caused by non-neoformans and non-gattii spp. in a 47-year-old female with refractory acute myeloid leukemia after allogeneic hematopoietic stem cell transplantation...
January 16, 2017: Infection & Chemotherapy
https://www.readbyqxmd.com/read/28264853/pharmacokinetics-and-pharmacodynamics-of-minocycline-against-acinetobacter-baumannii-in-a-neutropenic-murine-pneumonia-model
#9
Jian Zhou, Kimberly R Ledesma, Kai-Tai Chang, Henrietta Abodakpi, Song Gao, Vincent H Tam
Multi-drug resistant (MDR) Acinetobacter baumannii is increasingly more prevalent in nosocomial infections. Although in vitro susceptibility of A. baumannii to minocycline is promising, the in vivo efficacy of minocycline has not been well established. In this study, the in vivo activity of minocycline was evaluated in a neutropenic murine pneumonia model. Specifically, we investigated the relationship between minocycline exposure and bactericidal activity using 5 A. baumannii isolates with a broad range of susceptibility (MIC ranged from 0...
March 6, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28264844/in-vivo-pharmacokinetic-and-pharmacodynamic-profiles-of-antofloxacin-against-klebsiella-pneumoniae-in-a-neutropenic-murine-lung-infection-model
#10
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/28075196/typhlitis-neutropenic-enterocolitis-in-patients-with-acute-leukemia-a-review
#11
Rodrigo Portugal, Marcio Nucci
Typhlitis is an abdominal complication of cancer chemotherapy, affecting mostly patients receiving intensive chemotherapeutic regimens with high potential to induce mucosal damage, such as patients with acute leukemia. Despite being relatively frequent, there are no randomized trials or high-quality cohort studies addressing important aspects of the diagnosis and management of the disease. Areas covered: In this review we discuss the gaps in the literature, acknowledging that the evidences for recommendations regarding the management of typhlitis are mostly expert opinion...
February 2017: Expert Review of Hematology
https://www.readbyqxmd.com/read/28031207/pharmacokinetics-pharmacodynamics-of-pulmonary-delivery-of-colistin-against-pseudomonas-aeruginosa-in-a-mouse-lung-infection-model
#12
Yu-Wei Lin, Qi Tony Zhou, Soon-Ee Cheah, Jinxin Zhao, Ke Chen, Jiping Wang, Hak-Kim Chan, Jian Li
Colistin is often administered by inhalation and/or the parenteral route for the treatment of respiratory infections caused by multidrug-resistant (MDR) Pseudomonas aeruginosa However, limited pharmacokinetic (PK) and pharmacodynamic (PD) data are available to guide the optimization of dosage regimens of inhaled colistin. In the present study, PK of colistin in epithelial lining fluid (ELF) and plasma was determined following intratracheal delivery of a single dose of colistin solution in neutropenic lung-infected mice...
March 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28013453/pk-pd-target-attainment-with-ceftolozane-tazobactam-using-monte-carlo-simulation-in-patients-with-various-degrees-of-renal-function-including-augmented-renal-clearance-and-end-stage-renal-disease
#13
Alan J Xiao, Luzelena Caro, Myra W Popejoy, Jennifer A Huntington, Ravina Kullar
INTRODUCTION: Ceftolozane/tazobactam is an antibacterial agent with potent in vitro activity against Gram-negative pathogens, including many extended-spectrum β-lactamase-producing Enterobacteriaceae and drug-resistant Pseudomonas aeruginosa. Because ceftolozane/tazobactam is primarily excreted renally, appropriate dose adjustments are needed for patients with renal impairment. Monte Carlo simulations were used to determine the probability of pharmacokinetic/pharmacodynamic target attainment for patients with varying degrees of renal function, including augmented renal clearance (ARC) and end-stage renal disease (ESRD) with hemodialysis...
March 2017: Infectious Diseases and Therapy
https://www.readbyqxmd.com/read/28013359/comparison-of-engraftment-following-different-stem-cell-mobilization-modalities-in-patients-with-multiple-myeloma-treated-with-a-uniform-induction-regimen-containing-bortezomib-cyclophosphamide-and-dexamethasone
#14
COMPARATIVE STUDY
Noam Benyamini, Irit Avivi, Eldad J Dann, Tsila Zuckerman, Noa Lavi, Tami Katz
Bortezomib-based induction followed by autologous stem cell transplantation is a common treatment for multiple myeloma (MM). Stem cell (SC) mobilization with granulocyte-colony stimulating factor (G-CSF) alone has become an alternative to G-CSF combined with chemotherapeutic agents. This study aimed to compare the efficacy of the two mobilization modalities following induction with a uniform regimen containing bortezomib, cyclophosphamide and dexamethasone (VCD). We retrospectively evaluated results of SC mobilization using either G-CSF alone or combined with high-dose cyclophosphamide (HD-CY) in MM patients after VCD induction...
March 2017: Annals of Hematology
https://www.readbyqxmd.com/read/27999023/global-prevalence-of-carbapenem-resistance-in-neutropenic-patients-and-association-with-mortality-and-carbapenem-use-systematic-review-and-meta-analysis
#15
Elda Righi, Anna Maria Peri, Patrick N A Harris, Alexander M Wailan, Mariana Liborio, Steven W Lane, David L Paterson
Background: Carbapenem-resistant Gram-negative bacteria are recognized as a cause of difficult-to-treat infections associated with high mortality. Objectives: To perform a systematic review of currently available data on distribution, characteristics and outcome associated with carbapenem-resistant bloodstream infections in adult neutropenic patients. Methods: Included studies were identified through Medline, Embase and Cochrane databases between January 1995 and April 2016...
March 1, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/27981493/conversion-surgery-post-intraperitoneal-paclitaxel-and-systemic-chemotherapy-for-gastric-cancer-carcinomatosis-peritonei-are-we-ready
#16
Dexter Yak Seng Chan, Nicholas Li-Xun Syn, Rachel Yap, Janelle Niam Sin Phua, Thomas I Peng Soh, Cheng Ean Chee, Min En Nga, Asim Shabbir, Jimmy Bok Yan So, Wei Peng Yong
Peritoneal metastasis is common in gastric cancer. It is difficult to treat and carries a poor prognosis. Intraperitoneal (IP) delivery of chemotherapy can attain a higher drug exposure in the peritoneal cavity but with reduced systemic toxicity. Therefore, we hypothesized that IP paclitaxel with systemic chemotherapy would be clinically beneficial for gastric cancer with peritoneal metastases. Patients with unresectable and/or recurrent gastric adenocarcinoma with peritoneal dissemination and/or positive peritoneal washing cytology were recruited...
December 15, 2016: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/27904098/relationship-between-pk-pd-of-cefepime-and-clinical-outcome-in-febrile-neutropenic-patients-with-normal-renal-function
#17
Yoshiko Yamashita, Hidekazu Kamiyama, Asuka Yamamoto, Hiroki Kanoh, Yoshimitsu Yuhki, Akira Ueda, Yukari Kawamoto, Yoshikazu Gotoh, Satoshi Yamamoto
 The efficacy of cefepime (CFPM) is known to depend on the ratio of the time that the serum levels exceed the minimum inhibitory concentration (MIC) to the dosing interval (%T>MIC). The objective of this study was to clarify the relation between %T>MIC and clinical outcome of CFPM, and to identify the optimal dosage regimen. We investigated the outcome of CFPM treatment for febrile neutropenia (FN) patients with normal renal function. Treatment success was defined as the completion of FN therapy with CFPM only...
2016: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
https://www.readbyqxmd.com/read/27817239/modified-docetaxel-cisplatin-and-fluorouracil-therapy-as-the-first-line-treatment-for-patients-with-recurrent-metastatic-squamous-cell-carcinoma-of-the-head-and-neck-cancer-a-retrospective-study
#18
Nebi Serkan Demirci, Sercan Aksoy, Nuriye Yıldırım Özdemir, Gökmen Umut Erdem, Melike Ozcelik, Eda Tanrikulu, Tülay Eren, Yakup Bozkaya, Süleyman Sahin, Fatma Başol, Suheyla Aytac Aslan, Nurullah Zengin, İbrahim Güllü
AIM: Modified docetaxel, cisplatin, and 5-fluorouracil (mDCF) therapy has been shown to be a well tolerated and highly effective regimen for metastatic gastric carcinoma. Herein we investigated the effectiveness of the mDCF combination as the first-line treatment in patients with recurrent/metastatic squamous cell carcinoma of the head and neck (HNSCC). METHODS: A total of 80 patients with recurrent/metastatic HNSCC who were treated with mDCF between 2009 and 2015 were enrolled into this study...
December 8, 2016: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/27793737/benzylpenicillin-plus-an-aminoglycoside-versus-meropenem-in-neutropenic-lymphoma-and-leukaemia-patients-with-a-suspected-bacterial-infection-a-randomized-controlled-trial
#19
RANDOMIZED CONTROLLED TRIAL
D Torfoss, T Fladhagen, H Holte, L Brinch, F H Schjesvold, Y Fløisand, E Nyquist, J Dalgaard, P Meyer, A K Lehmann, J Hammerstrøm, T Skjelbakken, E A Høiby, L Sandvik, S Kvaløy
OBJECTIVES: In Norway, initial treatment of febrile neutropenia (FN) has traditionally been benzylpenicillin plus an aminoglycoside. Internationally, FN is often treated with a broad-spectrum β-lactam antibiotic. We aimed to compare these two regimens in a prospective, randomized, trial in patients with lymphoma or leukaemia with an expected period of neutropenia ≥7 days, and a suspected bacterial infection. METHODS: Adult neutropenic patients with lymphoma or leukaemia, and a suspected bacterial infection, were randomized for treatment with benzylpenicillin plus an aminoglycoside or meropenem...
March 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/27771837/bacteremia-during-neutropenic-episodes-in-children-undergoing-hematopoietic-stem-cell-transplantation-with-ciprofloxacin-and-penicillin-prophylaxis
#20
Worawut Choeyprasert, Suradej Hongeng, Usanarat Anurathapan, Samart Pakakasama
Bacteremia during neutropenic episodes is a cause of morbidity and mortality in patients undergoing hematopoietic stem cell transplantation (HSCT). We have used oral ciprofloxacin and penicillin V, from the start of the conditioning regimen until engraftment, for the prophylaxis of bacterial infection. The objective of this study was to retrospectively analyze the prevalence of and risk factors for breakthrough bacteremia during neutropenic episodes in autologous and allogeneic HSCT patients. There were 215 patients enrolled, with a median age of 8...
February 2017: International Journal of Hematology
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