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https://www.readbyqxmd.com/read/29029278/efficacy-and-safety-of-delafloxacin-compared-with-vancomycin-plus-aztreonam-for-acute-bacterial-skin-and-skin-structure-infections-a-phase-3-double-blind-randomized-study
#1
J Pullman, J Gardovskis, B Farley, E Sun, M Quintas, L Lawrence, R Ling, S Cammarata
Background: Delafloxacin is an investigational anionic fluoroquinolone in development for oral or intravenous administration for the treatment of infections caused by Gram-positive (including MRSA), Gram-negative, atypical and anaerobic organisms. Objectives: To establish the non-inferiority of delafloxacin compared with vancomycin plus aztreonam for the treatment of acute bacterial skin and skin structure infections and to compare the safety of the two antimicrobials...
October 5, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28980484/rate-and-incidence-of-adverse-reactions-associated-with-ceftaroline-exposure-importance-of-cutaneous-manifestations
#2
Jeffrey W Jansen, Ryan P Moenster
BACKGROUND: Ceftaroline is a broad-spectrum, methicillin-resistant Staphylococcus aureus (MRSA)-active β-lactam approved for acute bacterial skin and skin structure infections (ABSSSIs) and community-acquired pneumonia. Because of its favorable spectrum and pharmacokinetics, ceftaroline is frequently utilized for infections such as osteomyelitis and endocarditis. Ceftaroline has been associated with neutropenia, but evaluation of other adverse events remains limited. OBJECTIVE: To describe the rates and types of ceftaroline-associated adverse events and determine if patients' baseline allergies affect the rates of an adverse event...
October 1, 2017: Annals of Pharmacotherapy
https://www.readbyqxmd.com/read/28978045/mitoriboscins-mitochondrial-based-therapeutics-targeting-cancer-stem-cells-cscs-bacteria-and-pathogenic-yeast
#3
Bela Ozsvari, Marco Fiorillo, Gloria Bonuccelli, Anna Rita Cappello, Luca Frattaruolo, Federica Sotgia, Rachel Trowbridge, Richard Foster, Michael P Lisanti
The "endo-symbiotic theory of mitochondrial evolution" states that mitochondrial organelles evolved from engulfed aerobic bacteria, after millions of years of symbiosis and adaptation. Here, we have exploited this premise to design new antibiotics and novel anti-cancer therapies, using a convergent approach. First, virtual high-throughput screening (vHTS) and computational chemistry were used to identify novel compounds binding to the 3D structure of the mammalian mitochondrial ribosome. The resulting library of ∼880 compounds was then subjected to phenotypic drug screening on human cancer cells, to identify which compounds functionally induce ATP-depletion, which is characteristic of mitochondrial inhibition...
September 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28975963/linezolid-vs-vancomycin-in-treatment-of-methicillin-resistant-staphylococcus-aureus-infections-a-meta-analysis
#4
J Li, Q-H Zhao, K-C Huang, Z-Q Li, L-Y Zhang, D-Y Qin, F Pan, W-X Huang
OBJECTIVE: This study aims to explore the treatment of methicillin-resistant staphylococcus aureus (MRSA) infection by using meta-analysis method. MATERIALS AND METHODS: Pubmed/Medline, ScienceDirect, CNKI and Wanfang database were comprehensively searched to obtain the randomized controlled trials (RCTs) on linezolid and vancomycin in the treatment of MRSA infections. We extracted features and information of included studies and selected appropriate effect models based on the heterogeneity test results...
October 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28964280/pediatric-neck-abscesses-no-increase-in-methicillin-resistant-staphylococcus-aureus
#5
Avital Fellner, Tal Marom, Limor Muallem-Kalmovich, Nathan Shlamkovitch, Ephraim Eviatar, Tzilia Lazarovitch, Jacob Pitaro
INTRODUCTION: Recent studies from Western countries showed an increased incidence rate of methicillin-resistant Staphylococcus aureus (MRSA) isolated from pediatric neck abscesses cultures. We sought to examine the microbiology and antibiotic susceptibility of such samples over a 10-year period, and particularly of Staphylococcus aureus (SA), in order to determine whether a similar trend exists in our institution. METHODS: A retrospective chart review of children ≤18 years that underwent needle aspiration or surgical drainage of neck abscesses, including suppurative lymphadenitis, retropharyngeal abscesses, and parapharyngeal abscesses was conducted between 1/1/06-31/12/15...
October 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28951333/complications-during-the-treatment-of-diabetic-foot-osteomyelitis
#6
Suzanne A V van Asten, Moez Mithani, Edgar J G Peters, Javier La Fontaine, Paul J Kim, Lawrence A Lavery
AIM: To identify complications of medical treatment in patients with diabetic foot osteomyelitis (DFO). METHODS: We reviewed 143 records of consecutive patients admitted with DFO, confirmed by bone histopathology or culture. Complications monitored included acute kidney injuries (AKI), development of methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant Enterococcus (VRE), gastrointestinal complications, and venous catheter related complications during a 12 months follow-up period...
June 13, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28949410/early-administration-of-adjuvant-%C3%AE-lactam-therapy-in-combination-with-vancomycin-among-patients-with-methicillin-resistant-staphylococcus-aureus-bloodstream-infection-a-retrospective-multicenter-analysis
#7
Anthony M Casapao, David M Jacobs, Dana R Bowers, Nicholas D Beyda, Thomas J Dilworth
STUDY OBJECTIVE: To determine whether early administration of adjuvant β-lactam in combination with vancomycin (COMBO) affects clinical outcomes compared to standard vancomycin therapy alone (STAN) among patients with methicillin-resistant Staphylococcus aureus (MRSA) bloodstream infection. DESIGN: Retrospective, multicenter cohort study. SETTING: Five academic or community hospitals throughout the United States. PATIENTS: Adults with MRSA bloodstream infections treated with vancomycin (≥72 hours) ± an intravenous β-lactam (≥48 hours) initiated within 24 hours of initiating vancomycin...
September 26, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/28943633/vancomycin-induced-leukocytoclastic-vasculitis-and-acute-renal-failure-due-to-tubulointerstitial-nephritis
#8
Chandra Shekar Pingili, Emmanuel E Okon
BACKGROUND Methicillin-resistant Staphylococcus aureus (MRSA) bacteremia and sepsis are commonly treated with intravenous vancomycin. However, vancomycin treatment is associated adverse reactions, including skin rashes and nephrotoxicity. We present a case of acute renal failure due to acute tubulointerstitial nephritis associated with a diffuse leukocytoclastic vasculitic skin eruption following intravenous vancomycin treatment. CASE REPORT A 79-year-old Caucasian male patient was treated with intravenous vancomycin for MRSA bacteremia...
September 25, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28939607/multidrug-and-mupirocin-resistance-in-environmental-methicillin-resistant-staphylococcus-aureus-mrsa-collected-from-the-homes-of-people-diagnosed-with-a-community-onset-co-mrsa-infection
#9
J H Shahbazian, P D Hahn, S Ludwig, J Ferguson, P Baron, A Christ, K Spicer, P Tolomeo, A M Torrie, W B Bilker, V C Cluzet, B Hu, K Julian, I Nachamkin, S C Rankin, D O Morris, E Lautenbach, M F Davis
Patients with community-onset methicillin-resistant Staphylococcus aureus (CO-MRSA) infections contribute to MRSA contamination of the home environment, and may be re-exposed to MRSA strains from this reservoir. This study evaluates One Health risk factors that focus on the relationship between humans, animals and the environment for increased prevalence of multiple antimicrobial resistant MRSA in the home environment. During a trial of patients with CO-MRSA infection, MRSA was isolated from the household environment at baseline and three months later, following randomization of patients and household members to mupirocin-based decolonization therapy or education control...
September 22, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28923864/age-related-trends-in-adults-with-community-onset-bacteremia
#10
Ching-Chi Lee, Jiun-Ling Wang, Chung-Hsun Lee, Yuan-Pin Hung, Ming-Yuan Hong, Chia-Ming Chang, Wen-Chien Ko
To understand the epidemiological variation in bacteremia characteristics among differently aged populations, adults with community-onset bacteremia during a 6-year period were studied in a retrospective cohort. A total of 2,349 bacteremic patients were stratified into four age categories: young adults (18-44 years old; 196 patients, 8.3%), adults (45-64; 707, 30.1%), the elderly (65-84; 1,098, 46.7%), and the oldest old (≥ 85; 348, 14.8%). Age-related trends in critical illness (a Pitt bacteremia score ≥ 4) at bacteremia onset, antibiotic-resistant pathogens (ESBL-producing Escherichia coli, Klebsiella species, and Proteus mirabilis [EKP]; methicillin-resistant Staphylococcus aureus [MRSA]; and levofloxacin non-susceptible EKP), inappropriate empirical antibiotic therapy (EAT), and 4-week mortality rate were observed...
September 18, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28900682/treatment-of-staphylococcus-aureus-infections
#11
Michael Z David, Robert S Daum
Staphylococcus aureus, although generally identified as a commensal, is also a common cause of human bacterial infections, including of the skin and other soft tissues, bones, bloodstream, and respiratory tract. The history of S. aureus treatment is marked by the development of resistance to each new class of antistaphylococcal antimicrobial drugs, including the penicillins, sulfonamides, tetracyclines, glycopeptides, and others, complicating therapy. S. aureus isolates identified in the 1960s were sometimes resistant to methicillin, a ß-lactam antimicrobial active initially against a majority S...
September 13, 2017: Current Topics in Microbiology and Immunology
https://www.readbyqxmd.com/read/28899471/-a-report-of-two-children-with-fever-headache-and-purpura
#12
Hong-Bo Xu, Mei Tan, Jian Lu, Mao-Qiang Tian, Yan Chen
In this study, two school-aged children had an acute onset in spring and had the manifestations of fever, headache, vomiting, disturbance of consciousness, purpura and ecchymosis, and positive meningeal irritation sign. There were increases in peripheral white blood cells and neutrophils, but reductions in the hemoglobin level and platelet count in the two children. They had a significant increase in C-reactive protein. There were hundreds or thousands of white blood cells in the cerebrospinal fluid, mainly neutrophils...
September 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28893917/phenol-soluble-modulin-peptides-contribute-to-influenza-associated-staphylococcus-aureus-pneumonia
#13
Dominik Alexander Bloes, Emanuel Haasbach, Carmen Hartmayer, Tobias Hertlein, Karin Klingel, Dorothee Kretschmer, Oliver Planz, Andreas Peschel
Influenza A virus (IAV) infections are often followed by secondary bacterial lung infection, which is a major reason for severe, often fatal pneumonia. Community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) strains such as USA300 cause particularly severe and difficult-to-treat cases of IAV-associated pneumonia. CA-MRSA are known to produce extraordinarily high amounts of phenol-soluble modulin (PSM) peptides, important cytotoxins and proinflammatory molecules contributing to several types of S...
September 11, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28886013/secondary-bacterial-infections-and-antibiotic-resistance-among-tungiasis-patients-in-western-kenya
#14
Ruth Monyenye Nyangacha, David Odongo, Florence Oyieke, Missiani Ochwoto, Richard Korir, Ronald Kiprotich Ngetich, Gladys Nginya, Olipher Makwaga, Christine Bii, Peter Mwitari, Festus Tolo
Tungiasis or jigger infestation is a parasitic disease caused by the female sand flea Tunga penetrans. Secondary infection of the lesions caused by this flea is common in endemic communities. This study sought to shed light on the bacterial pathogens causing secondary infections in tungiasis lesions and their susceptibility profiles to commonly prescribed antibiotics. Participants were recruited with the help of Community Health Workers. Swabs were taken from lesions which showed signs of secondary infection...
September 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28879609/-bacterial-skin-and-soft-tissue-infections
#15
REVIEW
Frank Hanses
Bacterial skin and soft tissue infections are frequent and represent one of the most important differential diagnoses in patients presenting with reddened and swollen skin and soft tissue. Among these infections, cellulitis (phlegmon), erysipelas and abscesses are the most frequent. Whereas erysipelas is almost exclusively caused by streptococci and can be successfully treated with penicillin, an effective antibiotic therapy targeted at Staphylococcus aureus should be empirically considered for abscesses and phlegmon; other pathogens, such as gram negative and anaerobic bacteria can be found in patients with the corresponding underlying disease and certain risk factors...
September 6, 2017: Zeitschrift Für Rheumatologie
https://www.readbyqxmd.com/read/28874472/dehydrosqualene-desaturase-as-a-novel-target-for-anti-virulence-therapy-against-staphylococcus-aureus
#16
Peng Gao, Julian Davies, Richard Yi Tsun Kao
Staphylococcus aureus, especially methicillin-resistant S. aureus (MRSA), is a life-threatening pathogen in hospital- and community-acquired infections. The golden-colored carotenoid pigment of S. aureus, staphyloxanthin, contributes to the resistance to reactive oxygen species (ROS) and host neutrophil-based killing. Here, we describe a novel inhibitor (NP16) of S. aureus pigment production that reduces the survival of S. aureus under oxidative stress conditions. Carotenoid components analysis, enzyme inhibition, and crtN mutational studies indicated that the molecular target of NP16 is dehydrosqualene desaturase (CrtN)...
September 5, 2017: MBio
https://www.readbyqxmd.com/read/28853767/a-large-animal-model-for-a-failed-two-stage-revision-of-intramedullary-nail-related-infection-by-methicillin-resistant-staphylococcus-aureus
#17
T F Moriarty, T Schmid, V Post, E Samara, S Kates, E M Schwarz, S Zeiter, R G Richards
The treatment of chronic orthopaedic device-associated infection (ODRI) often requires multiple surgeries and prolonged antibiotic therapy. Despite this extensive treatment protocol, the procedure is associated with significant failure rates. Currently, no large animal model is available that recapitulates a failed revision. Therefore, our aim was to establish a large animal model for failed treatment of an ODRI in order to serve as a testbed for future interventional strategies. Adult Swiss Alpine sheep received an intramedullary nail in the tibia and a localised inoculum of either a methicillin-sensitive or methicillin-resistant Staphylococcus aureus (MSSA, MRSA respectively)...
August 30, 2017: European Cells & Materials
https://www.readbyqxmd.com/read/28845973/human-microbiome-inspired-antibiotics-with-improved-%C3%AE-lactam-synergy-against-mdr-staphylococcus-aureus
#18
John Chu, Xavier Vila Farres, Daigo Inoyama, Ricardo Gallardo-Macias, Mark Jaskowski, Shruthi Satish, Joel Stephen Freundlich, Sean F Brady
The flippase MurJ is responsible for transporting the cell wall intermediate lipid II from the cytoplasm to the outside of the cell. While essential for the survival of bacteria it remains an underexploited target for antibacterial therapy. The humimycin antibiotics are lipid II flippase (MurJ) inhibitors that were synthesized based on bioinformatic predictions derived from secondary metabolite gene clusters found in the human microbiome. Here we describe an SAR campaign around humimycin A that produced humimycin 17S...
August 28, 2017: ACS Infectious Diseases
https://www.readbyqxmd.com/read/28843819/eradication-of-mrsa-throat-carriage-a-randomized-trial-comparing-topical-treatment-with-rifampicin-based-systemic-therapy
#19
Anna-Karin Lindgren, Anna C Nilsson, Per Åkesson, Eva Gustafsson, Eva Melander
OBJECTIVES: Eradication of MRSA colonization may prevent transmission of strains between patients and reduces the risk of clinical infection. Colonization of the throat is associated with prolonged carriage and is more difficult to eradicate. METHODS: An open randomized study was conducted to evaluate two eradication protocols. Patients with pharyngeal carriage of MRSA were enrolled at six Swedish centers during four years. One treatment group received oral rifampicin and clindamycin or trimethoprim-sulfamethoxazole for seven days, in combination with nasal mupirocin...
August 23, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28834764/metal-carbenicillin-framework-based-nanoantibiotics-with-enhanced-penetration-and-highly-efficient-inhibition-of-mrsa
#20
Fei Duan, Xiaochen Feng, Yan Jin, Dawei Liu, Xinjian Yang, Guoqiang Zhou, Dandan Liu, Zhenhua Li, Xing-Jie Liang, Jinchao Zhang
The development of effective therapies to control methicillin-resistant Staphylococcus aureus (MRSA) infections is challenging because antibiotics can be degraded by the production of certain enzymes, for example, β-lactamases. Additionally, the antibiotics themselves fail to penetrate the full depth of biofilms formed from extracellular polymers. Nanoparticle-based carriers can deliver antibiotics with better biofilm penetration, thus combating bacterial resistance. In this study, we describe a general approach for the construction of β-lactam antibiotics and β-lactamase inhibitors co-delivery of nanoantibiotics based on metal-carbenicillin framework-coated mesoporous silica nanoparticles (MSN) to overcome MRSA...
August 17, 2017: Biomaterials
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