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Penicillin susceptible staphylococcus

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https://www.readbyqxmd.com/read/28342937/molecular-epidemiology-of-staphylococcus-aureus-nasal-colonization-among-patients-and-their-parents-guardian-in-an-iranian-referral-hospital
#1
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
https://www.readbyqxmd.com/read/28332157/systematic-overdosing-of-oxa-and-cloxacillin-in-severe-infections-treated-in-icu-risk-factors-and-side-effects
#2
Mathilde Neuville, Najoua El-Helali, Eric Magalhaes, Aguila Radjou, Roland Smonig, Jean-François Soubirou, Guillaume Voiriot, Alban Le Monnier, Stéphane Ruckly, Lila Bouadma, Romain Sonneville, Jean-François Timsit, Bruno Mourvillier
BACKGROUND: Oxacillin and cloxacillin are the most frequently used penicillins for the treatment of severe methicillin-susceptible Staphylococcus aureus infections in intensive care units (ICUs), especially endocarditis. International recommendations do not suggest any adaptation of the dosage in case of renal impairment. We wanted to assess the risk factors for overdosing in ICU and the related observed side effects. METHODS: All patients with a therapeutic drug monitoring of oxa- or cloxacillin between 2008 and 2014 were included...
December 2017: Annals of Intensive Care
https://www.readbyqxmd.com/read/28279787/implementation-of-a-cefazolin-based-stewardship-pathway-for-methicillin-susceptible-staphylococcus-aureus-bloodstream-infections-paired-with-infectious-diseases-consultation
#3
Benjamin J Lee, Sonia N Rao, Sheila K Wang, Jane Y Lee, Irfana Y Lakada, Elise M Gilbert, Viktorija O Barr, Michael J Postelnick, Sarah H Sutton, Teresa R Zembower, Maureen Bolon, Marc H Scheetz, Nathaniel J Rhodes
Methicillin-susceptible Staphylococcus aureus (MSSA) infections have been successfully treated both with cefazolin and antistaphylococcal penicillins; cefazolin appears effective in MSSA bloodstream infections (BSIs). Thus, our antimicrobial stewardship programme (ASP) implemented a clinical pathway supporting cefazolin use in MSSA-BSIs and restricting oxacillin use to infectious diseases (ID) consultation due to cefazolin's lower cost and more convenient dosing. This before and after quasi-experimental study was conducted to describe the impact on outcomes and process of care measures associated with implementing this pathway among patients with MSSA-BSI...
March 6, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28276799/comparison-of-outcome-and-clinical-characteristics-of-bacteremia-caused-by-methicillin-resistant-penicillin-resistant-and-penicillin-susceptible-staphylococcus-aureus-strains
#4
Elina Jokinen, Janne Laine, Reetta Huttunen, Pekka Rahikka, Heini Huhtala, Risto Vuento, Jaana Vuopio, Jaana Syrjänen
BACKGROUND: The aim of this study was to assess the association of methicillin resistance and penicillinase production with clinical characteristics and outcome of Staphylococcus aureus bacteremia. METHODS: For 126 patients with methicillin-resistant Staphylococcus aureus (MRSA) bacteremia, 378 age- and gender-matched controls with methicillin-susceptible Staphylococcus aureus (MSSA) bacteremia were selected. Of controls, 126 had bacteremia caused by penicillin-susceptible strains (PSSA) and 252 by penicillinase-producing strains (PRSA)...
February 28, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28265972/the-safety-and-economic-impact-of-cefazolin-versus-nafcillin-for-the-treatment-of-methicillin-susceptible-staphylococcus-aureus-bloodstream-infections
#5
Lauren K Flynt, Rachel M Kenney, Marcus J Zervos, Susan L Davis
INTRODUCTION: Anti-staphylococcal penicillins are generally accepted as first-line therapy for methicillin-susceptible Staphylococcus aureus (MSSA) bacteremia, but their use may be limited by interstitial nephritis and acute kidney injury. Alternatives include first-generation cephalosporins including cefazolin. METHODS: We conducted a retrospective cohort study to compare adverse effects and clinical outcomes among patients with MSSA bacteremia treated with cefazolin or nafcillin...
March 6, 2017: Infectious Diseases and Therapy
https://www.readbyqxmd.com/read/28261176/nasopharyngeal-and-oropharyngeal-colonization-by-staphylococcus-aureus-and-streptococcus-pneumoniae-and-prognostic-markers-in-children-with-sickle-cell-disease-from-the-northeast-of-brazil
#6
Larissa C Rocha, Magda O S Carvalho, Valma M L Nascimento, Milena S Dos Santos, Tânia F Barros, Elisângela V Adorno, Joice N Reis, Caroline C da Guarda, Rayra P Santiago, Marilda de Souza Gonçalves
We investigated the nasopharynx and oropharynx microbiota in sickle cell disease (SCD) to identify the microorganisms, antibiotic sensitivity, prevalent serotypes, and association of with laboratorial markers. Oropharynx/nasopharynx secretions were investigated in 143 SCD children aging 6 months to 17 years. Pathogens were isolated using standard procedures, and laboratorial markers were performed by automated methods. Staphylococcus aureus (S. aureus) was isolated from nasopharynx and oropharynx of 64 and of 17 SCD children respectively...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28244296/bacterial-species-and-antibiotic-sensitivity-in-korean-patients-diagnosed-with-acute-otitis-media-and-otitis-media-with-effusion
#7
Sang Hoon Kim, Eun Ju Jeon, Seok Min Hong, Chang Hoon Bae, Ho Yun Lee, Moo Kyun Park, Jae Yong Byun, Myung Gu Kim, Seung Geun Yeo
Changes over time in pathogens and their antibiotic sensitivity resulting from the recent overuse and misuse of antibiotics in otitis media (OM) have complicated treatment. This study evaluated changes over 5 years in principal pathogens and their antibiotic sensitivity in patients in Korea diagnosed with acute OM (AOM) and OM with effusion (OME). The study population consisted of 683 patients who visited the outpatient department of otorhinolaryngology in 7 tertiary hospitals in Korea between January 2010 and May 2015 and were diagnosed with acute AOM or OME...
April 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28223386/surveillance-of-omadacycline-activity-tested-against-clinical-isolates-from-a-global-north-america-europe-latin-america-and-asia-western-pacific-collection-2010-2011
#8
Michael A Pfaller, Michael D Huband, Paul R Rhomberg, Robert K Flamm
Omadacycline is a broad spectrum aminomethylcycline in late-stage clinical development for acute bacterial skin and skin structure infections and community-acquired pneumonia as both an oral and intravenous, once-daily formulation. In this report omadacycline and comparators were tested against 69,246 non-duplicate bacterial isolates collected prospectively during 2010 and 2011 from medical centers in Asia-Pacific (11,397 isolates), Europe (23,490 isolates), Latin America (8,038 isolates) and North America (26,321 isolates)...
February 21, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28164610/an-investigation-of-the-frequency-of-upper-respiratory-tract-infection-pathogens-and-their-antibiotic-patterns-in-tonsils-and-adenoids-of-adenotonsillectomy-patients
#9
Yasar Nakipoglu, Gulsen Gunel, Deniz Kanliada, Levent Aydemir, Nezahat Gurler, Bulent Gurler
BACKGROUND: We aimed to investigate the potentially pathogenic bacteria of upper respiratory tract infections (URTIs) and their susceptibilities to different antibiotics. METHODS: Two-hundred adenoid and tonsil specimens from 100 patients who had undergone adenotonsillectomy were obtained and analyzed bacteriologically. Identification of the pathogens was made by conventional or commercial identification systems and antibiotic susceptibility tests were carried out by disk diffusion method...
August 1, 2016: Clinical Laboratory
https://www.readbyqxmd.com/read/28159661/molecular-characteristics-of-methicillin-resistant-staphylococcus-aureus-mrsa-strains-isolated-from-patients-with-bacteremia-based-on-mlst-sccmec-spa-and-agr-locus-types-analysis
#10
Mehdi Goudarzi, Sima Sadat Seyedjavadi, Mohammad Javad Nasiri, Hossein Goudarzi, Raheleh Sajadi Nia, Hossein Dabiri
The widespread emergence of methicillin resistant Staphylococcus aureus, as a common cause of nosocomial infections, is becoming a serious concern in global public health. The objective of the present study was to investigate antimicrobial susceptibility pattern, frequency of virulence genes and molecular characteristics of methicillin-resistant Staphylococcus aureus strains isolated from patients with bacteremia. A total of 128 methicillin-resistant Staphylococcus aureus isolates were collected during February 2015 to January 2016...
March 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28148226/trends-in-antimicrobial-resistance-and-empiric-antibiotic-therapy-of-bloodstream-infections-at-a-general-hospital-in-mid-norway-a-prospective-observational-study
#11
Arne Mehl, Bjørn Olav Åsvold, Angela Kümmel, Stian Lydersen, Julie Paulsen, Ingvild Haugan, Erik Solligård, Jan Kristian Damås, Stig Harthug, Tom-Harald Edna
BACKGROUND: The occurrence of bloodstream infection (BSI) and antimicrobial resistance have been increasing in many countries. We studied trends in antimicrobial resistance and empiric antibiotic therapy at a medium-sized general hospital in Mid-Norway. METHODS: Between 2002 and 2013, 1995 prospectively recorded episodes of BSI in 1719 patients aged 16-99 years were included. We analyzed the antimicrobial non-susceptibility according to place of acquisition, site of infection, microbe group, and time period...
February 2, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28135900/penicillin-susceptible-staphylococcus-aureus-susceptibility-testing-resistance-rates-and-outcome-of-infection
#12
Malin Hagstrand Aldman, Annette Skovby, Lisa I Påhlman
BACKGROUND: Staphylococcus aureus (SA) is an important human pathogen that causes both superficial and invasive infections. Penicillin is now rarely used in the treatment of SA infections due to widespread resistance and a concern about the accuracy of existing methods for penicillin susceptibility testing. The aims of the present study were to determine the frequency of penicillin-susceptible SA isolates from blood and wound cultures in Lund, Sweden, and to evaluate methods for penicillin testing in SA...
January 30, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28118725/synergistic-antibacterial-effects-of-herbal-extracts-and-antibiotics-on-methicillin-resistant-staphylococcus-aureus-a-computational-and-experimental-study
#13
Chiu-Fai Kuok, Sai-On Hoi, Chi-Fai Hoi, Chi-Hong Chan, Io-Hong Fong, Cheong-Kei Ngok, Li-Rong Meng, Pedro Fong
Antibiotic resistance has become a serious global concern, and the discovery of antimicrobial herbal constituents may provide valuable solutions to overcome the problem. In this study, the effects of therapies combining antibiotics and four medicinal herbs on methicillin-resistant Staphylococcus aureus (MRSA) were investigated. Specifically, the synergistic effects of Magnolia officinalis, Verbena officinalis, Momordica charantia, and Daphne genkwa in combination with oxacillin or gentamicin against methicillin-resistant (ATCC43300) and methicillin-susceptible (ATCC25923) S...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28072493/patterns-of-infections-aetiological-agents-and-antimicrobial-resistance-at-a-tertiary-care-hospital-in-northern-tanzania
#14
Happiness Houka Kumburu, Tolbert Sonda, Blandina Theophil Mmbaga, Michael Alifrangis, Ole Lund, Gibson Kibiki, Frank M Aarestrup
OBJECTIVE: To determine the causative agents of infections and their antimicrobial susceptibility at a tertiary care hospital in Moshi, Tanzania, to guide optimal treatment. METHODS: A total of 590 specimens (stool (56), sputum (122), blood (126) and wound swabs (286)) were collected from 575 patients admitted in the medical and surgical departments. The bacterial species were determined by conventional methods, and disc diffusion was used to determine the antimicrobial susceptibility pattern of the bacterial isolates...
January 10, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/28056831/nasal-carriage-of-methicillin-resistant-staphylococcus-aureus-among-health-care-workers-at-al-shifa-hospital-in-gaza-strip
#15
Nabil Abdullah El Aila, Nahed Ali Al Laham, Basim Mohammad Ayesh
BACKGROUND: Nasal carriage of Staphylococcus aureus among hospital personnel is a common cause of hospital acquired infections. Emergence of drug resistant strains especially methicillin resistant S. aureus (MRSA) is a serious problem in hospital environment. Therefore, the aim of this study was to determine the nasal carriage rate of S. aureus and MRSA among Health Care Workers (HCWs) at Al Shifa Hospital, the major hospital in Gaza Strip. METHODS: A cross sectional study was conducted on 200 HCWs...
January 5, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28039666/use-of-ceftaroline-fosamil-in-children-review-of-current-knowledge-and-its-application
#16
REVIEW
Juwon Yim, Leah M Molloy, Jason G Newland
Ceftaroline is a novel cephalosporin recently approved in children for treatment of acute bacterial skin and soft tissue infections and community-acquired bacterial pneumonia (CABP) caused by methicillin-resistant Staphylococcus aureus, Streptococcus pneumoniae and other susceptible bacteria. With a favorable tolerability profile and efficacy proven in pediatric patients and excellent in vitro activity against resistant Gram-positive and Gram-negative bacteria, ceftaroline may serve as a therapeutic option for polymicrobial infections, CABP caused by penicillin- and ceftriaxone-resistant S...
March 2017: Infectious Diseases and Therapy
https://www.readbyqxmd.com/read/28035690/%C3%AE-lactam-therapy-for-methicillin-susceptible-staphylococcus-aureus-bacteremia-a-comparative-review-of-cefazolin-versus-antistaphylococcal-penicillins
#17
REVIEW
Julius Li, Kelly L Echevarria, Kristi A Traugott
Methicillin-susceptible Staphylococcus aureus (MSSA) bacteremia is associated with high morbidity and mortality. Traditionally, antistaphylococcal penicillins (ASPs) have been considered the agents of choice for the treatment of MSSA bacteremia. Vancomycin has been demonstrated to have poorer outcomes in several studies and is only recommended for patients with severe penicillin allergies. Although cefazolin is considered as an alternative to the ASPs for patients with nonsevere penicillin allergies, cefazolin offers several pharmacologic advantages over ASPs, such as more convenient dosing regimens, and antimicrobial stewardship programs are increasingly using cefazolin as the preferential agent for MSSA infections as part of cost-saving initiatives...
March 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/27999423/characterization-of-community-associated-staphylococcus-aureus-from-skin-and-soft-tissue-infections-a-multicenter-study-in-china
#18
MULTICENTER STUDY
Ying Liu, Zhe Xu, Zhou Yang, Juan Sun, Lin Ma
We evaluated the epidemiological and molecular features of community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) and methicillin-sensitive S. aureus (MSSA) from children and adult patients with skin and soft-tissue infections (SSTIs) in China. Prospective community-acquired S. aureus SSTI surveillance was conducted in 23 hospitals over a 24-month period. Susceptibility to 16 antimicrobials was evaluated using the agar dilution method. StatApriori was used to determine statistically significant association trends...
December 21, 2016: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/27994923/microbiological-features-of-upper-respiratory-tract-infections-in-bulgarian-children-for-the-period-1998-2014
#19
Raina Tzvetanova Gergova, Guergana Petrova, Stefan Gergov, Petko Minchev, Ivan Mitov, Tanya Strateva
BACKGROUND: Across the globe, upper respiratory tract infections (URTIs) are the most prevalent cause of morbidity in childhood. AIMS: The aim of our study is to analyze the incidence and etiology of bacterial URTIs in Bulgarian children, as well as the increasing antimicrobial resistance to the most common etiologic agents over a period of 17 years. STUDY DESIGN: Retrospective study. METHODS: The study material comprised the data from 4768 patients (aged 1-16 years) with URTI during the period from 1998-2014...
November 2016: Balkan Medical Journal
https://www.readbyqxmd.com/read/27927926/clinical-and-microbiological-aspects-of-%C3%AE-lactam-resistance-in-staphylococcus-lugdunensis
#20
Ian H McHardy, Jennifer Veltman, Janet Hindler, Katia Bruxvoort, Marissa M Carvalho, Romney M Humphries
Antimicrobial susceptibility results from broth microdilution MIC testing of 993 Staphylococcus lugdunensis isolates recovered from patients at a tertiary care medical center from 2008 to 2015 were reviewed. Ninety-two oxacillin-susceptible isolates were selected to assess the accuracy of penicillin MIC testing, the penicillin disk diffusion test, and three β-lactamase tests, including the cefoxitin-induced nitrocefin test, penicillin cloverleaf assay, and penicillin disk zone edge test. The results of all phenotypic tests were compared to the results of blaZ PCR...
February 2017: Journal of Clinical Microbiology
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