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https://www.readbyqxmd.com/read/28632822/-strategies-to-reduce-infections-and-antibiotic-use-and-its-effects-in-a-neonatal-care-unit
#1
Soledad Urzúa, Marcela Ferrés, Patricia García, Amparo Sánchez, Matías Luco
INTRODUCTION: Late onset sepsis (LOS) remains an important cause of morbidity and mortality in neonatal intensive care units (NICU). The empirical use of vancomycin and other broad spectrum antibiotics is very frequent and is associated with the emergence of resistant agents, infection by gram-negative bacilli (GNB), fungal infections and increased morbidity and mortality. OBJECTIVE: To evaluate the impact of 5 intervention protocols designed to reduce infections and promote the rational use of antibiotics (AB) in a single NICU...
April 2017: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/28631634/phenotypic-and-molecular-characterization-of-cefotaximases-temoniera-and-sulfhydryl-variable-%C3%AE-lactamases-in-pseudomonas-and-acinetobacter-isolates-in-an-indian-tertiary-health-care-center
#2
Sana Jamali, Mohammed Shahid, Farrukh Sobia, Anuradha Singh, Haris M Khan
BACKGROUND: Cefotaximases (CTX-M), temoniera (TEM), and sulfhydryl variable (SHV) constitute a rapidly growing cluster of enzymes that have disseminated geographically. They are spreading to species other than Enterobacteriaceae and might be responsible for the presence of blaCTX-M,blaTEM, and blaSHVgenes in Pseudomonas and Acinetobacter spp. The present study was designed to characterize CTX-M, TEM, and SHV phenotypically and genotypically in Pseudomonas and Acinetobacter spp. MATERIALS AND METHODS: A total of 90 isolates (73 Pseudomonas and 17 Acinetobacter spp...
April 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28631121/-prudent-use-of-antimicrobial-prophylaxis-prevention-of-increasing-antibiotic-resistance
#3
REVIEW
C Hein, A Pilatz, F M E Wagenlehner
BACKGROUND: The use of peri-operative antimicrobial prophylaxis during urological procedures to prevent postoperative complications is very common. OBJECTIVES: What kind of recommendations for reasonable use of peri-operative antimicrobial prophylaxis during urological procedures to prevent increasing antibiotic resistance and postoperative complications exist? METHODS: Review of evidence-based recommendations from literature and current Guidelines of the EAU...
June 19, 2017: Der Urologe. Ausg. A
https://www.readbyqxmd.com/read/28630687/emerging-antimicrobial-resistance-in-early-and-late-onset-neonatal-sepsis
#4
Lamiaa Mohsen, Nermin Ramy, Dalia Saied, Dina Akmal, Niveen Salama, Mona M Abdel Haleim, Hany Aly
BACKGROUND: Compared to developed countries, the use of antimicrobials in Egypt is less regulated and is available over the counter without the need for prescriptions. The impact of such policy on antimicrobial resistance has not been studied. This study aimed to determine the prevalence of early and late onset sepsis, and the frequency of antimicrobial resistance in a major referral neonatal intensive care unit (NICU). METHODS: The study included all neonates admitted to the NICU over a 12-month period...
2017: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/28630197/pharmacodynamics-of-cefepime-combined-with-tazobactam-against-clinically-relevant-enterobactereaceae-in-a-neutropenic-mouse-thigh-model
#5
Maria J Melchers, Anita C van Mil, Claudia Lagarde, Jan den Hartigh, Johan W Mouton
The lack of new antibiotics prompted the investigation of the combination of two existing agents cefepime, a broad-spectrum cephalosporin and tazobactam to broaden its efficacy against extended-spectrum beta-lactamase producing Enterobacteriaceae. We determined the pharmacokinetic and pharmacodynamic properties of the combination in a murine neutropenic thigh model in order to establishing its exposure- response relationships (ERR). The PK of cefepime was determined for five doses; that of tazobactam was determined in earlier studies (Melchers et al Antimicrob...
June 19, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28630190/%C3%AE-lactam-antibiotics-with-a-high-affinity-for-pbp2-act-synergistically-with-the-ftsz-targeting-agent-txa707-against-methicillin-resistant-staphylococcus-aureus
#6
Edgar Ferrer-González, Malvika Kaul, Ajit K Parhi, Edmond J LaVoie, Daniel S Pilch
Methicillin-resistant Staphylococcus aureus (MRSA) is a multi-drug resistant pathogen that poses a significant risk to global health today. We have developed a promising new FtsZ-targeting agent (TXA707) with potent activity against MRSA isolates resistant to current standard-of-care antibiotics. Here we present results that demonstrate differing extents of synergy between TXA707 and a broad range of β-lactam antibiotics (including six cephalosporins, two penicillins, and two carbapenems) against MRSA. To explore whether there is a correlation between the extent of synergy and the preferential antibacterial target of each β-lactam, we determined the binding affinities of the β-lactam antibiotics for each of the four native penicillin binding proteins (PBPs) of S...
June 19, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28630178/efficacy-of-cefiderocol-against-carbapenem-resistant-gram-negative-bacilli-in-immunocompetent-rat-respiratory-tract-infection-models-recreating-human-plasma-pharmacokinetics
#7
Shuhei Matsumoto, Christine M Singley, Jennifer Hoover, Rio Nakamura, Roger Echols, Stephen Rittenhouse, Masakatsu Tsuji, Yoshinori Yamano
Cefiderocol (S-649266), a novel siderophore cephalosporin, shows potent activity against carbapenem-resistant Gram-negative bacilli. In this study, we evaluated the efficacy of cefiderocol against carbapenem-resistant Gram-negative bacilli (Pseudomonas aeruginosa,Acinetobacter baumannii and Klebsiella pneumoniae) in immunocompetent rat respiratory tract infection models recreating plasma pharmacokinetics (PK) profiles in healthy human subjects. A total of 6 clinical isolates (1 cephalosporin-susceptible P. aeruginosa, 1 multidrug-resistant P...
June 19, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28625021/antibiotic-prophylaxis-for-elective-hysterectomy
#8
REVIEW
Reuben Olugbenga Ayeleke, Selma Mourad, Jane Marjoribanks, Karim A Calis, Vanessa Jordan
BACKGROUND: Elective hysterectomy is commonly performed for benign gynaecological conditions. Hysterectomy can be performed abdominally, laparoscopically, or vaginally, with or without laparoscopic assistance. Antibiotic prophylaxis consists of administration of antibiotics to reduce the rate of postoperative infection, which otherwise affects 40%-50% of women after vaginal hysterectomy, and more than 20% after abdominal hysterectomy. No Cochrane review has systematically assessed evidence on this topic...
June 18, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28624864/the-clinical-significance-of-pneumonia-in-patients-with-respiratory-specimens-harbouring-multidrug-resistant-pseudomonas-aeruginosa-a-5-year-retrospective-study-following-5667-patients-in-four-general-icus
#9
B Borgatta, S Gattarello, C A Mazo, A T Imbiscuso, M N Larrosa, M Lujàn, J Rello
Pseudomonas aeruginosa is the leading cause of pneumonia in intensive care units (ICUs), with multidrug-resistant (MDR) strains posing a serious threat. The aim of this study was to assess the clinical relevance of MDR Pseudomonas isolates in respiratory clinical specimens. A 5-year retrospective observational study in four medical-surgical ICUs from a referral hospital was carried out. Of 5667 adults admitted to the ICU, 69 had MDR-PA in respiratory samples: 31 were identified as having pneumonia (HAP/VAP): 21 ventilator-associated pneumonia (VAP) and ten hospital-acquired pneumonia (HAP)...
June 17, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28621642/spectrum-and-antibiotic-resistance-of-uropathogens-between-2004-and-2015-in-a-tertiary-care-hospital-in-hungary
#10
András Magyar, Béla Köves, Károly Nagy, András Dobák, Vinodh Kumar Adithyaa Arthanareeswaran, Péter Bálint, Florian Wagenlehner, Péter Tenke
PURPOSE: Surveillance of the bacterial spectrum and antibiotic-resistance patterns of locally occurring uropathogens is essential to serve as a basis for empirical treatment of urinary tract infections (UTIs), as antibiotic-resistance rates may vary geographically with significant differences between countries and regions, and with time. METHODOLOGY: We retrospectively analysed all urine samples taken in the department of urology in a tertiary care hospital in Hungary from January 2004 to December 2015...
June 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28619146/dynamics-of-cmy-2-producing-e-coli-in-a-broiler-parent-flock
#11
Anita Dame-Korevaar, Egil A J Fischer, Arjan Stegeman, Dik Mevius, Alieda van Essen-Zandbergen, Francisca Velkers, Jeanet van der Goot
Extended-spectrum β-lactamase and plasmid mediated AmpC β-lactamase (ESBL/pAmpC) producing bacteria are resistant to Extended Spectrum Cephalosporins (ESC), and are present in all levels of the broiler production chain. We determined the prevalence, concentration, and persistence of ESBL/pAmpC-Escherichia coli in a broiler parent flock during the rearing and laying period. One-day old chickens were housed in four separate pens. Until week 33 no antibiotics or coccidiostatics were used. During rearing 57 chickens in each pen (n=228), and in the laying period two groups of 33 chickens were individually sampled (n=66)...
May 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28617526/antimicrobial-resistance-gene-expression-associated-with-multidrug-resistant-salmonella-spp-isolated-from-retail-meat-in-hanoi-vietnam
#12
Minh Ngoc Nghiem, Viet Thanh Nguyen, Thu Thi Hoai Nguyen, Ton Dang Nguyen, Thuy Thi Bich Vo
The purpose of this study was to further characterize the multi-antimicrobial resistance and antibiotic resistance gene expression associated with multi-drug resistance (MDR) in Salmonella spp. isolates from retail meats in Hanoi, Vietnam. A total of 14 Salmonella spp. belonging to 9 serotypes (e.g., Warragul, London, Derby, Indiana, Meleagridis, Give, Rissen, Assine, and Typhimurium) were tested for sensitivity to 8 antibiotics. Resistance to at least one antibiotic was shown in 13 strains (92.85%). The multiple antimicrobial resistances accounted for 64...
June 2017: International Microbiology: the Official Journal of the Spanish Society for Microbiology
https://www.readbyqxmd.com/read/28613873/the-drug-resistant-variant-p167s-expands-the-substrate-profile-of-ctx-m-%C3%AE-lactamases-for-oxyimino-cephalosporin-antibiotics-by-enlarging-the-active-site-upon-acylation
#13
Meha P Patel, Liya Hu, Vlatko Stojanoski, Banumathi Sankaran, B V Venkataram Prasad, Timothy Palzkill
β-Lactamases are enzymes produced by bacterial cells that provide resistance to β-lactam antibiotics. The CTX-M class of β-lactamases provides resistance against the antibiotic, cefotaxime, but not a related oxyimino-cephalosporin antibiotic, ceftazidime. β-lactamases that carry the P167S substitution, however, have been reported to provide ceftazidime resistance. The mechanism by which the P167S substitution expands the substrate profile of CTX-M enzymes is not known. In this study, CTX-M-14 was used as the model enzyme to study the structural changes caused by the P167S mutation that may accelerate ceftazidime turnover...
June 14, 2017: Biochemistry
https://www.readbyqxmd.com/read/28613139/evaluation-of-the-relationship-between-the-minimum-inhibitory-concentration-of-ceftiofur-and-third-generation-cephalosporins-in-escherichia-coli-isolates-from-food-producing-animals
#14
Mototaka Hiki, Yasuhito Shimizu, Michiko Kawanishi, Manao Ozawa, Hitoshi Abo, Akemi Kojima, Ryoji Koike, Satowa Suzuki, Tetsuo Asai, Shuichi Hamamoto
To enable future comparison of the antimicrobial susceptibility data between bacteria obtained from animals and humans, it is necessary to compare the relationships between minimum inhibitory concentrations (MICs) of veterinary and human medicine. We evaluated the relationship between the MIC of ceftiofur (CTF) and the MICs of other third-generation cephalosporins (TGCs): cefotaxime (CTX), cefpodoxime (CPDX), and ceftazidime (CAZ), determined by the broth microdilution method using 118 cefazolin-resistant Escherichia coli isolates from food-producing animals...
June 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28608133/frequency-associated-factors-and-outcome-of-multi-drug-resistant-intensive-care-unit-acquired-pneumonia-among-patients-colonized-with-extended-spectrum-%C3%AE-lactamase-producing-enterobacteriaceae
#15
Keyvan Razazi, Armand Mekontso Dessap, Guillaume Carteaux, Chloé Jansen, Jean-Winoc Decousser, Nicolas de Prost, Christian Brun-Buisson
BACKGROUND: We assessed prevalence, associated factors and prognosis of extended-spectrum beta-lactamase-producing Enterobacteriaceae pneumonia acquired in intensive care unit (ESBL-PE pneumonia) among carriers. Variables associated with nosocomial pneumonia caused by carbapenem-resistant bacteria (CRB) were also assessed. METHODS: A 6-year prospective study (May 2009-March 2015) in the medical ICU of an 850-bed university-affiliated hospital was conducted. RESULTS: Of the 6303 patients admitted, 843 (13...
December 2017: Annals of Intensive Care
https://www.readbyqxmd.com/read/28607013/pena-pona-porb1-and-mtrr-mutations-and-molecular-epidemiological-typing-of-neisseria-gonorrhoeae-with-decreased-susceptibility-to-cephalosporin
#16
Kayo Osawa, Katsumi Shigemura, Yukie Nukata, Koichi Kitagawa, Fukashi Yamamichi, Hiroyuki Yoshida, Toshiro Shirakawa, Soichi Arakawa, Masato Fujisawa
In recent years, N. gonorrhoeae strains with decreased susceptibilities (DS; MIC > 0.064 mg/L) or resistance to cefixime (CFM) or ceftriaxone (CRO), have been classed as a "superbug" and have spread worldwide, resulting in treatment failures for gonorrhea (1-3).….
June 12, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28606364/cefotaxime-resistant-e-coli-in-dairy-and-beef-cattle-farms-joint-analyses-of-two-cross-sectional-investigations-in-germany
#17
Katja Hille, Inga Ruddat, Annette Schmid, Johanna Hering, Maria Hartmann, Christiane von Münchhausen, Bettina Schneider, Ute Messelhäusser, Anika Friese, Rolf Mansfeld, Annemarie Käsbohrer, Stefan Hörmansdorfer, Uwe Roesler, Lothar Kreienbrock
Resistance to third-generation cephalosporins and other beta-lactam antibiotics is of major concern for animal and human health. Knowledge of the prevalence of resistant bacteria in primary production is an important element to estimate transmission along the stages in the food production chain and the exposure of the human population. The primary objective of this study was to determine the prevalence of cefotaxime-resistant commensal E. coli in dairy and beef cattle production units throughout Germany. Secondarily, the association between management factors and the presence of cefotaxime resistance was investigated...
July 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28600499/clinical-on-site-monitoring-of-%C3%A3-lactam-antibiotics-for-a-personalized-antibiotherapy
#18
R Bruch, C Chatelle, A Kling, B Rebmann, S Wirth, S Schumann, W Weber, C Dincer, G Urban
An appropriate antibiotherapy is crucial for the safety and recovery of patients. Depending on the clinical conditions of patients, the required dose to effectively eradicate an infection may vary. An inadequate dosing not only reduces the efficacy of the antibiotic, but also promotes the emergence of antimicrobial resistances. Therefore, a personalized therapy is of great interest for improved patients' outcome and will reduce in long-term the prevalence of multidrug-resistances. In this context, on-site monitoring of the antibiotic blood concentration is fundamental to facilitate an individual adjustment of the antibiotherapy...
June 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28600447/the-epidemiology-management-and-outcomes-of-bacterial-meningitis-in-infants
#19
Lynda Ouchenir, Christian Renaud, Sarah Khan, Ari Bitnun, Andree-Anne Boisvert, Jane McDonald, Jennifer Bowes, Jason Brophy, Michelle Barton, Joseph Ting, Ashley Roberts, Michael Hawkes, Joan L Robinson
OBJECTIVES: The pathogens that cause bacterial meningitis in infants and their antimicrobial susceptibilities may have changed in this era of increasing antimicrobial resistance, use of conjugated vaccines, and maternal antibiotic prophylaxis for group B Streptococcus (GBS). The objective was to determine the optimal empirical antibiotics for bacterial meningitis in early infancy. METHODS: This was a cohort study of infants <90 days of age with bacterial meningitis at 7 pediatric tertiary care hospitals across Canada in 2013 and 2014...
June 9, 2017: Pediatrics
https://www.readbyqxmd.com/read/28595854/erratum-to-intestinal-colonisation-with-extended-spectrum-cephalosporin-and-colistin-resistant-enterobacteriaceae-in-hiv-positive-individuals-in-switzerland-molecular-features-and-risk-factors-international-journal-of-antimicrobial-agents-49-4-2017-519-521
#20
Joao Pires, Odette J Bernasconi, Christoph Hauser, Regula Tinguely, Andrew Atkinson, Vincent Perreten, Valentina Dona, Andri Rauch, Hansjakob Furrer, Andrea Endimiani
No abstract text is available yet for this article.
June 5, 2017: International Journal of Antimicrobial Agents
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