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Linezolid and vancomycin

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https://www.readbyqxmd.com/read/28542602/antimicrobial-resistance-status-of-enterococcus-from-australian-cattle-populations-at-slaughter
#1
Robert S Barlow, Kate E McMillan, Lesley L Duffy, Narelle Fegan, David Jordan, Glen E Mellor
Antimicrobial agents are used in cattle production systems for the prevention and control of bacterial associated diseases. A consequence of their use is the potential development of antimicrobial resistance (AMR). Enterococcus faecium and Enterococcus faecalis that are resistant to antimicrobials are of increased concern to public health officials throughout the world as they may compromise the ability of various treatment regimens to control disease and infection in human medicine. Australia is a major exporter of beef; however it does not have an ongoing surveillance system for AMR in cattle or foods derived from these animals...
2017: PloS One
https://www.readbyqxmd.com/read/28540152/epidemiological-clinical-and-microbiological-characteristics-of-patients-with-post-traumatic-osteomyelitis-of-limb-fractures-in-southwest-china-a-hospital-based-study
#2
Jiachen Peng, Youliang Ren, Wenbin He, Zhengdao Li, Jin Yang, Yi Liu, Zhonghui Zheng, Stephen L Kates, Edward M Schwarz, Chao Xie, Youjia Xu
Objective To determine the epidemiological, clinical and microbiological characteristics, of patients with post-traumatic osteomyelitis of extremity fractures, and provide evidence-based guidelines for early diagnosis and treatment, including empiric antibiotic therapy. Methods Human subject research was performed using institutional review board approved protocols. A retrospective chart review was conducted on 5,368 patients diagnosed with extremity traumatic fractures from January 1, 2012 to December 31, 2015, to identify osteomyelitis patients...
2017: J Bone Jt Infect
https://www.readbyqxmd.com/read/28532398/clinical-outcomes-of-linezolid-and-vancomycin-in-patients-with-nosocomial-pneumonia-caused-by-methicillin-resistant-staphylococcus-aureus-stratified-by-baseline-renal-function-a-retrospective-cohort-analysis
#3
Ping Liu, Blair Capitano, Amy Stein, Ali A El-Solh
BACKGROUND: The primary objective of this study is to assess whether baseline renal function impacts treatment outcomes of linezolid and vancomycin (with a dose-optimized regimen) for methicillin-resistant Staphylococcus aureus (MRSA) pneumonia. METHODS: We conducted a retrospective cohort analysis of data generated from a prospective, randomized, controlled clinical trial (NCT 00084266). The analysis included 405 patients with culture-proven MRSA pneumonia. Baseline renal function was stratified based on creatinine clearance...
May 22, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28500123/enterococcus-casseliflavus-septicaemia-associated-with-hepatobiliary-infection-in-a-75-year-old-man
#4
Rajanshu Verma, Allison L Baroco
Enterococcus casseliflavus is a rare non-faecium, non-faecalis, vancomycin-resistant enterococcus (VRE) that is responsible for up to 2% of all enterococcal infections. Septicaemia with this bacterium is usually seen in older patients with multiple comorbidities who have had several previous hospitalisations. Septicaemia with E. casseliflavus portends a poorer prognosis, and treatment usually involves administration of antienterococcal beta-lactams or anti-VRE medications such as linezolid or daptomycin. We present such a case of a 75-year-old man who developed E...
May 12, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28483600/phenotypic-and-genotypic-study-of-biofilm-formation-in-enterococci-isolated-from-urinary-tract-infections
#5
F Fallah, M Yousefi, M R Pourmand, A Hashemi, A Nazari Alam, D Afshar
BACKGROUND: Urinary tract infection (UTI) is one of the most frequent types of nosocomial and community acquired infections in humans. Management of multidrug-resistant Enterococci UTI due to the limited therapeutic options is a great challenge for physicians and clinical microbiologists. The role of bacterial biofilms in recurrent urinary tract infections and antimicrobial resistance has great importance for public health. The aim of this study was to investigate the antibiotic susceptibility pattern as well as the phenotypic and genotypic biofilm formation ability of Enterococci isolates from patients with UTI...
May 5, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28473827/prevalence-virulence-genes-antimicrobial-susceptibility-and-genetic-diversity-of-staphylococcus-aureus-from-retail-aquatic-products-in-china
#6
Dongli Rong, Qingping Wu, Mingfang Xu, Jumei Zhang, Shubo Yu
Staphylococcus aureus is an important food-borne opportunistic pathogen that frequently causes severe blood and tissue infections or even fatal illnesses. Although S. aureus has been extensively studied in livestock and poultry foods in China, limited information has been reported in aquatic products. Accordingly, in this study, we aimed to characterize S. aureus in aquatic products purchased from retail markets in China. In total, 320 aquatic food samples were collected from 32 provincial capitals in China...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28469994/molecular-characteristics-of-staphylococcus-aureus-causing-bovine-mastitis-between-2014-and-2015
#7
Tianming Li, Huiying Lu, Xing Wang, Qianqian Gao, Yingxin Dai, Jun Shang, Min Li
Staphylococcus aureus is highly pathogenic and can cause diseases in both humans and domestic animals. In animal species, including ruminants, S. aureus may cause severe or sub-clinical mastitis. This study aimed to investigate the molecular profile, antimicrobial resistance, and genotype/phenotype correlation of 212 S. aureus isolates recovered from cases of bovine mastitis from 2014 to 2015 in the Shanghai and Zhejiang areas of China. Nineteen sequence types (STs) were determined by multi-locus sequence typing, while the dominant ST was ST97, followed by ST520, ST188, ST398, ST7, and ST9...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28464580/-analysis-of-the-spectrum-and-resistance-of-pathogen-causing-sepsis-in-patients-with-severe-acute-pancreatitis
#8
H X Ma, L He, S W Cai, X L Xin, H D Shi, L Zhou, X J Shi
Objective: To investigate the characteristics of spectrum and drug resistance of pathogens causing sepsis in patients with severe acute pancreatitis(SAP). Methods: The clinical data of 63 SAP patients with sepsis admitted in Department of Hepatobiliary, People's Liberation Army General Hospital from January 2014 to December 2015 were retrospectively studied. There were 47 males and 16 females, aged from 22 to 73 years, with an average age of (52±11)years. Samples were collected mainly from: (1)pancreatic and peripancreatic necrosis and abdominal drainage; (2)bile; (3) blood or deep venous catheter; (4) sputum and tracheal catheter and thoracic drainage; (5) urine...
May 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28438824/comparison-of-linezolid-and-vancomycin-lock-solutions-with-and-without-heparin-against-biofilm-producing-bacteria
#9
Megan K Luther, Leonard A Mermel, Kerry L LaPlante
PURPOSE: The activity of linezolid and vancomycin lock solutions against biofilm-producing strains of Staphylococcus aureus, S. epidermidis, and Enterococcus faecalis was studied. METHODS: Two strains each of methicillin-susceptible S. aureus (MSSA), methicillin-resistant S. aureus (MRSA), and S. epidermidis, and 1 strain of vancomycin-susceptible E. faecalis and vancomycin-resistant E. faecalis were tested against vancomycin and linezolid to assess prevention of biofilm formation and eradication of these pathogens within a formed biofilm...
May 1, 2017: American Journal of Health-system Pharmacy: AJHP
https://www.readbyqxmd.com/read/28434558/resistance-profiles-and-risk-factors-of-resistant-microorganisms-in-bacteraemia-of-abdominal-origin
#10
J Martín Jaramago, R Armero Ibáñez, J J Camarena Miñana, M Morales Suárez-Varela
OBJECTIVE: The presence of resistant microorganisms is a major cause of failure in initial empirical antimicrobial therapy. The objectives of this study are to determine the resistance profile of microorganisms that cause bacteraemia of abdominal origin and to identify whether the previous use of antibiotics and the place of acquisition of bacteraemia are risk factors associated with the presence of resistant organisms. MATERIAL AND METHODS: A clinical, observational, epidemiological, retrospective cohort study was conducted with all the adult patients admitted to a university hospital from 2011-2013...
April 20, 2017: Revista Española de Anestesiología y Reanimación
https://www.readbyqxmd.com/read/28432878/in-vitro-susceptibility-of-methicillin-resistant-staphylococcus-aureus-isolates-from-skin-and-soft-tissue-infections-to-vancomycin-daptomycin-linezolid-and-tedizolid
#11
Johanna Marcela Vanegas Múnera, Ana María Ocampo Ríos, Daniela Montoya Urrego, Judy Natalia Jiménez Quiceno
INTRODUCTION: Treatment of multidrug-resistant Gram-positive infections caused by Staphylococcus aureus remains as a clinical challenge due to emergence of new resistance mechanisms. Tedizolid is a next-generation oxazolidinone, recently approved for skin and soft tissues infections. We conducted a study to determine in vitro susceptibility to vancomycin, daptomycin, linezolid, and tedizolid in MRSA clinical isolates from adult patients with skin and soft tissue infections. MATERIAL AND METHODS: Methicillin-resistant S...
April 19, 2017: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28427133/-effects-of-application-of-vancomycin-in-the-early-stage-of-patients-with-extremely-severe-burn
#12
Z Zhu, G W Cao, J J Bao, Z H Hu, Z Shen, H Tao, B Cao, F Xu
Objective: To evaluate the effects of application of vancomycin in the early stage of patients with extremely severe burn, in order to provide reference to drug for anti-infection treatment in the early stage of patients with extremely severe burn. Methods: Data of 15 patients of Kunshan explosion on August 2nd, 2014, admitted to the Department of Intensive Care in our hospital were retrospectively analyzed. The clinical efficacy of continuously intravenous dripping of vancomycin (combined with imipenem) in the early stage of burns (before and on post burn day 14) was analyzed...
April 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28419033/oral-only-linezolid-rifampin-is-highly-effective-compared-with-other-antibiotics-for-periprosthetic-joint-infection-study-of-a-mouse-model
#13
John M Thompson, Vikram Saini, Alyssa G Ashbaugh, Robert J Miller, Alvaro A Ordonez, Roger V Ortines, Yu Wang, Robert S Sterling, Sanjay K Jain, Lloyd S Miller
BACKGROUND: The medical treatment of periprosthetic joint infection (PJI) involves prolonged systemic antibiotic courses, often with suboptimal clinical outcomes including increased morbidity and health-care costs. Oral and intravenous monotherapies and combination antibiotic regimens were evaluated in a mouse model of methicillin-resistant Staphylococcus aureus (MRSA) PJI. METHODS: Oral linezolid with or without oral rifampin, intravenous vancomycin with oral rifampin, intravenous daptomycin or ceftaroline with or without oral rifampin, oral doxycycline, or sham treatment were administered at human-exposure doses for 6 weeks in a mouse model of PJI...
April 19, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28407067/evaluation-of-a-second-sign-process-for-antimicrobial-prior-authorization
#14
Aimee M Dassner, Jennifer E Girotto
Background.: A second-sign prospective restriction of select broad-spectrum antimicrobials was fully implemented in January 2015 as a pediatric antimicrobial stewardship program (ASP) initiative to help ensure the most appropriate empiric use of ceftaroline, cefepime, fidaxomicin, linezolid, and vancomycin (intravenous). The objective of this evaluation is to assess the effectiveness of a forced second-sign process in the electronic medical record as a pediatric ASP strategy. We anticipated that the second-sign process for antibiotics would increase the appropriateness of empiric antibiotic use, as defined by preapproved criteria, clinical pathways, national guidelines, and pediatric-specific infectious diseases reference texts, while not causing significant delay in the initial administration of antibiotic therapy...
April 12, 2017: Journal of the Pediatric Infectious Diseases Society
https://www.readbyqxmd.com/read/28406091/daptomycin-associated-eosinophilic-pneumonia-with-rechallenge-a-case-report%C3%A2
#15
Melanie Nickerson, Ashish Bhargava, Pramodini B Kale-Pradhan
PURPOSE: A case of daptomycin-associated acute eosinophilic pneumonia (AEP) with positive rechallenge is reported. SUMMARY: AEP associated with daptomycin is reported in the literature, and the product labeling contains a warning and precaution statement. Criteria for diagnosing daptomycin-induced AEP varies and generally includes bronchoalveolar lavage (BAL) eosinophils ≥ 25%. We report a case of a 70-year-old woman with cough, shortness of breath, and altered mental status who presented ~ 9 days after starting therapy with daptomycin to treat methicillin-resistant Staphylococcus aureus (MRSA) osteomyelitis...
April 13, 2017: International Journal of Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28379553/high-vancomycin-mics-predict-the-development-of-infective-endocarditis-in-patients-with-catheter-related-bacteraemia-due-to-methicillin-resistant-staphylococcus-aureus
#16
Rafael San-Juan, Mario Fernández-Ruiz, Oriol Gasch, Mariana Camoez, Francisco López-Medrano, María Ángeles Domínguez, Benito Almirante, Belén Padilla, Miquel Pujol, José María Aguado
Background: It has been suggested that there is an increased risk of treatment failure in episodes of MRSA bloodstream infection (BSI) caused by strains with high vancomycin MICs. However, it is unknown if this phenomenon may also act as a risk factor for the development of infective endocarditis (IE). Methods: We analysed 207 episodes of catheter-related (CR)-BSI recruited from June 2008 to December 2009 within a prospective study on MRSA BSI in 21 Spanish hospitals...
March 31, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28378945/translational-pharmacometric-evaluation-of-typical-antibiotic-broad-spectrum-combination-therapies-against-staphylococcus-aureus-exploiting-in-vitro-information
#17
Sebastian G Wicha, Wilhelm Huisinga, Charlotte Kloft
Broad-spectrum antibiotic combination therapy is frequently applied due to increasing resistance development of infective pathogens. The objective of the present study was to evaluate two common empiric broad-spectrum combination therapies consisting of either linezolid or vancomycin combined with meropenem against Staphylococcus aureus as the most frequent causative pathogen of severe infections. A semi-mechanistic PK-PD model mimicking a simplified bacterial life-cycle of S. aureus was developed upon time-kill curve data to describe the effects of linezolid, vancomycin and meropenem alone and in dual combinations...
April 5, 2017: CPT: Pharmacometrics & Systems Pharmacology
https://www.readbyqxmd.com/read/28377752/antimicrobial-resistance-and-molecular-characterization-of-staphylococcus-aureus-causing-childhood-pneumonia-in-shanghai
#18
Zhen Song, Fei-Fei Gu, Xiao-Kui Guo, Yu-Xing Ni, Ping He, Li-Zhong Han
Staphylococcus aureus or methicillin-resistant Staphylococcus aureus (MRSA) is a major pathogen causing pneumonia among children. To estimate the prevalence and molecular properties of S. aureus in children pneumonia in Shanghai, China, 107 hospitalized children with S. aureus pneumonia from two children's hospitals from January 2014 through June 2015 were studied. S. aureus isolates from the respiratory specimens were characterized by antimicrobial susceptibility, agr typing, toxin genes, multilocus sequence typing (MLST), spa, and SCCmec typing...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28353453/a-change-for-the-antibacterial-treatment-policy-to-decrease-carbapenem-consumption-at-a-haematopoietic-stem-cell-transplantation-centre
#19
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/28342937/molecular-epidemiology-of-staphylococcus-aureus-nasal-colonization-among-patients-and-their-parents-guardian-in-an-iranian-referral-hospital
#20
Babak Pourakbari, Mahmoud Khodabandeh, Shima Mahmoudi, Farah Sabouni, Alireza Aziz-Ahari, Abbas Bahador, Sepideh Keshavarz Valian, Reihaneh Hosseinpour Sadeghi, Setareh Mamishi
INTRODUCTION: Carriage of Staphylococcus aureus in the nose appears to play a key role in the epidemiology and pathogenesis of infection. It is important to investigate the genetic relatedness of S. aureus and MRSA clones in different geographic regions. The aim of this study was to assess the nasal carriage rate of S. aureus, including MRSA strains in both hospitalized children and general adult population (parents/guardian). In addition, antibiotic susceptibility pattern and molecular diversity of S...
March 22, 2017: Microbial Pathogenesis
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