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1. Ceftazidime + avibactam (Zavicefta). An option in the case of cephalosporin resistance

Ceftazidime + avibactam (Zavicefta). An option in the case of cephalosporin resistance Prescrire IN ENGLISH - Spotlight ''Ceftazidime + avibactam (Zavicefta°). An option in the case of cephalosporin resistance'', 1 March 2018 {1} {1} {1} | | > > > Ceftazidime + avibactam (Zavicefta°). An option in the case of cephalosporin resistance Spotlight Every month, the subjects in Prescrire’s Spotlight. 100 most recent :  |   |   |   |   |   |   |  (...)  |   |  Spotlight Ceftazidime + avibactam (Zavicefta°). An option in the case of cephalosporin resistance FEATURED REVIEW A ceftazidime + avibactam combination (Zavicefta°, Pfizer) has been approved in the European Union for the treatment of various “complicated” infections. In one clinical trial, the combination was as effective as a carbapenem and had an acceptable adverse effect profile. Full review (2 pages) available for download by subscribers. In practice The ceftazidime

2018 Prescrire

2. Amoxicillin use with history of cephalosporin allergy

Amoxicillin use with history of cephalosporin allergy Amoxicillin use with history of cephalosporin allergy ') Cookie Notice This site uses cookies. By continuing to browse this site, you are agreeing to our use of cookies. Review our for more details. OK Menu Search Main navigation Utility navigation / Search navigation Search Search AAAAI Breadcrumb navigation ▸ ▸ Amoxicillin use with history of cephalosporin allergy | Amoxicillin use with history of cephalosporin allergy Q: 2/11/2020 (...) There are a number of excellent papers in the literature that offer guidance for safe administration of second and higher generation cephalosporins to penicillin allergic patients. However, the reverse guidance on which penicillins may be problematic in patients that have an allergy to cephalexin (one of our most commonly used first line cephalosporins) is much more difficult to find. For example, Drs. Zagursky and Pichichero have written two excellent articles on beta-lactam cross-reactivity and R group

2020 American Academy of Allergy, Asthma & Immunology - Ask the Expert

3. Combination therapy with ciprofloxacin and third-generation cephalosporin versus third-generation cephalosporin monotherapy in Escherichia coli meningitis in infants: a multicentre propensity score-matched observational study. (Abstract)

Combination therapy with ciprofloxacin and third-generation cephalosporin versus third-generation cephalosporin monotherapy in Escherichia coli meningitis in infants: a multicentre propensity score-matched observational study. Escherichiacoli is the second cause of bacterial meningitis in neonates. Despite the use for 35 years of third-generation cephalosporins (3GCs), high morbidity and mortality rates with E. coli meningitis continue to occur. Because ciprofloxacin has good microbiologic

2018 Clinical Microbiology and Infection

4. Incidence of cephalosporin-induced anaphylaxis and clinical efficacy of screening intradermal tests with cephalosporins: a large multicenter retrospective cohort study. (Abstract)

Incidence of cephalosporin-induced anaphylaxis and clinical efficacy of screening intradermal tests with cephalosporins: a large multicenter retrospective cohort study. Few studies have investigated the incidence of anaphylaxis induced by individual or structurally similar cephalosporins. The aims of the study were to assess the incidence of cephalosporin-induced anaphylaxis and evaluate the clinical efficacy of screening skin tests.In this retrospective cohort study, we obtained information (...) on total cephalosporin use and cephalosporin-induced anaphylaxis in intravenous cephalosporin recipients in 12 general hospitals between 2013 and 2015. Cephalosporins were divided into 4 groups according to similar side-chain structures. The incidence of cephalosporin-induced anaphylaxis was assessed for each cephalosporin, cephalosporin generation, and side-chain group. To verify the efficacy of screening intradermal tests (IDT) with cephalosporin, the 12 hospitals were assigned to the intervention

2018 Allergy

5. Is there a 10% cross-sensitivity between penicillins and cephalosporins?

Is there a 10% cross-sensitivity between penicillins and cephalosporins? Is there a 10% cross-sensitivity between penicillins and cephalosporins? – SPS - Specialist Pharmacy Service – The first stop for professional medicines advice Menu · · Published 24th October 2018, updated 25th October 2018 This Q&A investigates whether the often-stated 10% cross-sensitivity between penicillins and cephalosporins is supported by clinical evidence. Attachments · Word · 49 KB · · Copyright © 2019 SPS

2018 Specialist Pharmacy Services

6. Occurrence of blaDHA-1 mediated cephalosporin resistance in Escherichia coli and their transcriptional response against cephalosporin stress: a report from India Full Text available with Trip Pro

Occurrence of blaDHA-1 mediated cephalosporin resistance in Escherichia coli and their transcriptional response against cephalosporin stress: a report from India Treatment alternatives for DHA-1 harboring strains are challenging as it confers resistance to broad spectrum cephalosporins and may further limit treatment option when expressed at higher levels. Therefore, this study was designed to know the prevalence of DHA genes and analyse the transcription level of DHA-1 against different β (...) -lactam stress.Screening of AmpC β-lactamase phenotypically by modified three dimensional extract method followed by Antimicrobial Susceptibility and MIC determination. Genotyping screening of β-lactamase genes was performed by PCR assay followed by their sequencing. The bla DHA-1 transcriptional response was evaluated under different cephalosporin stress by RT PCR. Transferability of bla DHA gene was performed by transformation and conjugation and plasmid incompatibility typing, DNA fingerprinting

2017 Annals of Clinical Microbiology and Antimicrobials

7. Prevalence of antimicrobial resistance and potential pathogenicity, and possible spread of third generation cephalosporin resistance, in Escherichia coli isolated from healthy chicken farms in the region of Dakar, Senegal. Full Text available with Trip Pro

Prevalence of antimicrobial resistance and potential pathogenicity, and possible spread of third generation cephalosporin resistance, in Escherichia coli isolated from healthy chicken farms in the region of Dakar, Senegal. Escherichia coli is a normal inhabitant of the intestinal microbiota of chickens, a small proportion of which may be avian pathogenic E. coli (APEC) or potential extraintestinal pathogenic E. coli (ExPEC), capable of causing disease in humans. These E. coli may also (...) be resistant to antimicrobials of critical importance in human or veterinary health. This study aims to 1) determine the prevalence of antimicrobial resistance (AMR) and resistance genes, multidrug resistance (MDR), chromosomal mechanisms of quinolone-resistance and virulence profiles of E. coli isolated from healthy chicken farms in the region of Dakar, Senegal, 2) investigate the spread of third-generation cephalosporins (3GC) resistance in E. coli isolated from healthy chicken farms with respect

2019 PLoS ONE

8. Cephalosporin nitric oxide-donor prodrug DEA-C3D disperses biofilms formed by clinical cystic fibrosis isolates of Pseudomonas aeruginosa. Full Text available with Trip Pro

Cephalosporin nitric oxide-donor prodrug DEA-C3D disperses biofilms formed by clinical cystic fibrosis isolates of Pseudomonas aeruginosa. The cephalosporin nitric oxide (NO)-donor prodrug DEA-C3D ('DiEthylAmin-Cephalosporin-3'-Diazeniumdiolate') has been shown to initiate the dispersal of biofilms formed by the Pseudomonas aeruginosa laboratory strain PAO1. In this study, we investigated whether DEA-C3D disperses biofilms formed by clinical cystic fibrosis (CF) isolates of P. aeruginosa (...) and colistin.DEA-C3D was confirmed to selectively release NO in response to contact with bacterial β-lactamase. Despite lacking direct, cephalosporin/β-lactam-based antibacterial activity, DEA-C3D was able to disperse biofilms formed by three P. aeruginosa clinical isolates. Confocal microscopy revealed that DEA-C3D in combination with tobramycin produces similar reductions in biofilm to DEA-C3D alone, whereas the combination with colistin causes near complete eradication of P. aeruginosa biofilms in vitro.DEA

2020 Journal of Antimicrobial Chemotherapy

9. Prevalence of third-generation cephalosporin-resistant Enterobacterales colonization on hospital admission and ESBL genotype-specific risk factors: a cross-sectional study in six German university hospitals. (Abstract)

Prevalence of third-generation cephalosporin-resistant Enterobacterales colonization on hospital admission and ESBL genotype-specific risk factors: a cross-sectional study in six German university hospitals. To assess the admission prevalence of third-generation cephalosporin-resistant Enterobacterales (3GCREB) and to assess whether risk factors vary by β-lactamase genotype.Adult patients were recruited within 72 h of admission to general wards of six university hospitals in 2014 and 2015

2020 Journal of Antimicrobial Chemotherapy

10. <i>In vitro</i> activity of cefiderocol, a siderophore-cephalosporin, against multidrug-resistant gram-negative bacteria. Full Text available with Trip Pro

In vitro activity of cefiderocol, a siderophore-cephalosporin, against multidrug-resistant gram-negative bacteria. Cefiderocol is a parenteral siderophore cephalosporin, with a catechol-containing 3' substituent. We evaluated its MICs against gram-negative bacteria, using iron-depleted Mueller-Hinton broth. The panel comprised 305 Enterobacterales, 111 P. aeruginosa and 99 A. baumannii, all selected for carbapenem resistance and multi-resistance to other agents. At 2 and 4 μg/ml

2020 Antimicrobial Agents and Chemotherapy

11. Adding Insult to Injury: Mechanistic Basis for How AmpC Mutations Allow Pseudomonas aeruginosa To Accelerate Cephalosporin Hydrolysis and Evade Avibactam. Full Text available with Trip Pro

Adding Insult to Injury: Mechanistic Basis for How AmpC Mutations Allow Pseudomonas aeruginosa To Accelerate Cephalosporin Hydrolysis and Evade Avibactam. Pseudomonas aeruginosa is a leading cause of nosocomial infections worldwide and notorious for its broad-spectrum resistance to antibiotics. A key mechanism that provides extensive resistance to β-lactam antibiotics is the inducible expression of AmpC β-lactamase. Recently, a number of clinical isolates expressing mutated forms of AmpC have

2020 Antimicrobial Agents and Chemotherapy

12. Comparative Genomic Analysis of Third-Generation-Cephalosporin-Resistant Escherichia coli Harboring the <i>bla</i> <sub>CMY-2</sub>-Positive IncI1 Group, IncB/O/K/Z, and IncC Plasmids Isolated from Healthy Broilers in Japan. (Abstract)

Comparative Genomic Analysis of Third-Generation-Cephalosporin-Resistant Escherichia coli Harboring the bla CMY-2-Positive IncI1 Group, IncB/O/K/Z, and IncC Plasmids Isolated from Healthy Broilers in Japan. The off-label use of third-generation cephalosporins (3GCs) during in ovo vaccination or vaccination of newly hatched chicks has been a common practice worldwide. CMY-2-producing Escherichia coli strains have been disseminated in broiler chicken production. The objective

2020 Antimicrobial Agents and Chemotherapy

13. An international prospective cohort study to validate two prediction rules for infections caused by 3rd-generation cephalosporin-resistant Enterobacterales. Full Text available with Trip Pro

An international prospective cohort study to validate two prediction rules for infections caused by 3rd-generation cephalosporin-resistant Enterobacterales. The possibility of bloodstream infections caused by 3rd-generation cephalosporin-resistant Enterobacterales (3GC-R-BSI) leads to a trade-off between empiric inappropriate treatment (IAT) and unnecessary carbapenem use (UCU). Accurately predicting 3GC-R-BSI could reduce IAT and UCU. We externally validate two previously derived prediction

2020 Clinical Infectious Diseases

14. Multiple Low-Reactivity Class B Penicillin-Binding Proteins Are Required for Cephalosporin Resistance in Enterococci. Full Text available with Trip Pro

Multiple Low-Reactivity Class B Penicillin-Binding Proteins Are Required for Cephalosporin Resistance in Enterococci. Enterococcus faecalis and Enterococcus faecium are commensals of the gastrointestinal tract of most terrestrial organisms, including humans, and are major causes of health care-associated infections. Such infections are difficult or impossible to treat, as the enterococcal strains responsible are often resistant to multiple antibiotics. One intrinsic resistance trait (...) that is conserved among E. faecalis and E. faecium is cephalosporin resistance, and prior exposure to cephalosporins is one of the most well-known risk factors for acquisition of an enterococcal infection. Cephalosporins inhibit peptidoglycan biosynthesis by acylating the active-site serine of penicillin-binding proteins (PBPs) to prevent the PBPs from catalyzing cross-linking during peptidoglycan synthesis. For decades, a specific PBP (known as Pbp4 or Pbp5) that exhibits low reactivity toward cephalosporins

2020 Antimicrobial Agents and Chemotherapy

15. IS<i>Ecp1</i>-Mediated Transposition Leads to Fosfomycin and Broad-Spectrum Cephalosporin Resistance in Klebsiella pneumoniae. Full Text available with Trip Pro

ISEcp1-Mediated Transposition Leads to Fosfomycin and Broad-Spectrum Cephalosporin Resistance in Klebsiella pneumoniae. A fosfomycin-resistant and carbapenemase (OXA-48)-producing Klebsiella pneumoniae isolate was recovered, and whole-genome sequencing revealed ISEcp1-blaCTX-M-14b tandemly inserted upstream of the chromosomally encoded lysR-fosA locus. Quantitative evaluation of the expression of lysR and fosA genes showed that this insertion brought a strong hybrid promoter leading (...) to overexpression of the fosA gene, resulting in fosfomycin resistance. This work showed the concomitant acquisition of resistance to broad-spectrum cephalosporins and fosfomycin due to a single genetic event.Copyright © 2020 American Society for Microbiology.

2020 Antimicrobial Agents and Chemotherapy

16. Oral cephalosporin and β-lactamase inhibitor combinations for ESBL-producing Enterobacteriaceae urinary tract infections. (Abstract)

Oral cephalosporin and β-lactamase inhibitor combinations for ESBL-producing Enterobacteriaceae urinary tract infections. ESBL-producing Enterobacteriaceae as uropathogens have given rise to a sizeable amount of global morbidity. Community and hospital surveillance studies continue to report increasing proportions of these organisms as causes of urinary tract infection (UTI). Due to limited treatment options and the presence of cross-resistance amongst oral antibiotics of different classes (...) , patients often require IV therapy, thereby increasing healthcare costs and reducing the effectiveness of delivering healthcare. Oral cephalosporin antibiotics are well known for their ability to achieve high urinary concentrations, in addition to achieving clinical success for treatment of uncomplicated UTI with a drug-susceptible pathogen. Novel cephalosporin/β-lactamase inhibitor combinations have been developed and demonstrate good in vitro activity against ESBL-producing isolates. A pooled analysis

2020 Journal of Antimicrobial Chemotherapy

17. Multiplex real-time PCR assays for the prediction of cephalosporin, ciprofloxacin and azithromycin antimicrobial susceptibility of positive Neisseria gonorrhoeae nucleic acid amplification test samples. (Abstract)

Multiplex real-time PCR assays for the prediction of cephalosporin, ciprofloxacin and azithromycin antimicrobial susceptibility of positive Neisseria gonorrhoeae nucleic acid amplification test samples. The incidence of antimicrobial-resistant Neisseria gonorrhoeae (GC) is rising in Canada; however, antimicrobial resistance (AMR) surveillance data are unavailable for infections diagnosed directly from clinical specimens by nucleic acid amplification tests (NAATs), representing over 80 (...) % of diagnoses. We developed a set of 10 improved molecular assays for surveillance of GC-AMR and prediction of susceptibilities in NAAT specimens.Multiplex real-time PCR (RT-PCR) assays were developed to detect SNPs associated with cephalosporin (ponA, porB, mtrR -35delA, penA A311V, penA A501, N513Y, G545S), ciprofloxacin (gyrA S91, parC D86/S87/S88) and azithromycin [23S (A2059G, C2611T), mtrR meningitidis-like promoter] resistance. The assays were validated on 127 gonococcal isolates, 51 non-gonococcal

2020 Journal of Antimicrobial Chemotherapy

18. Efficacy of adjunctive azithromycin versus single-dose cephalosporin prophylaxis for caesarean scar defect: study protocol for a randomised controlled trial. Full Text available with Trip Pro

Efficacy of adjunctive azithromycin versus single-dose cephalosporin prophylaxis for caesarean scar defect: study protocol for a randomised controlled trial. Perioperative infections may be considered predictors of caesarean scar defect (CSD), and multidose antibiotics have a protective effect against CSD. However, the ability of adjunctive azithromycin combined with cephalosporin to reduce the prevalence of CSD remains unclear. The planned study aims to clarify the protective effect (...) of antibiotics against CSD and to assess the effectiveness of adjunctive azithromycin prophylaxis for CSD.This study is a double-blind, parallel-control randomised clinical trial that will be carried out at the International Peace Maternity and Child Health Hospital. A total of 220 eligible patients will be randomised (1:1) to receive either adjunctive azithromycin or single-dose cephalosporin 30 min before the incision. The evaluation criteria are the prevalence and characteristics of CSD as assessed

2020 BMJ open

19. Empirical Treatment With Carbapenem vs Third-generation Cephalosporin for Treatment of Spontaneous Bacterial Peritonitis. (Abstract)

Empirical Treatment With Carbapenem vs Third-generation Cephalosporin for Treatment of Spontaneous Bacterial Peritonitis. Third-generation cephalosporins (TGCs) are recommended as first-line antibiotics for treatment of spontaneous bacterial peritonitis (SBP). However, antibiotics against multidrug-resistant organisms (such as carbapenems) might be necessary. We aimed to evaluate whether carbapenems are superior to TGC for treatment of SBP.We performed a retrospective study of 865 consecutive

2020 Clinical Gastroenterology and Hepatology

20. Prescriber perceptions of fluoroquinolones, extended-spectrum cephalosporins, and <i>Clostridioides difficile</i> infection. (Abstract)

Prescriber perceptions of fluoroquinolones, extended-spectrum cephalosporins, and Clostridioides difficile infection. Fluoroquinolones (FQs) and extended-spectrum cephalosporins (ESCs) are associated with higher risk of Clostridioides difficile infection (CDI). Decreasing the unnecessary use of FQs and ESCs is a goal of antimicrobial stewardship. Understanding how prescribers perceive the risks and benefits of FQs and ESCs is needed.We conducted interviews with clinicians from 4

2020 Infection control and hospital epidemiology

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