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https://www.readbyqxmd.com/read/28341979/are-third-generation-cephalosporins-unavoidable-for-empirical-therapy-of-community-acquired-pneumonia-in-adult-patients-who-require-icu-admission-a-retrospective-study
#1
Geoffroy Hariri, Jacques Tankovic, Pierre-Yves Boëlle, Vincent Dubée, Guillaume Leblanc, Claire Pichereau, Simon Bourcier, Naike Bigé, Jean-Luc Baudel, Arnaud Galbois, Hafid Ait-Oufella, Eric Maury
BACKGROUND: Third-generation cephalosporins (3GCs) are recommended for empirical antibiotic therapy of community-acquired pneumonia (CAP) in patients requiring ICU admission. However, their extensive use could promote the emergence of extended-spectrum beta-lactamases-producing Enterobacteriaceae. Our aim was to assess whether the use of 3GCs in patients with CAP requiring ICU admission was justified. METHODS: We assessed all patients with CAP who required ICU admission during a 7-year period...
December 2017: Annals of Intensive Care
https://www.readbyqxmd.com/read/28341473/pneumonia-after-cardiac-surgery-experience-of-the-national-institutes-of-health-canadian-institutes-of-health-research-cardiothoracic-surgical-trials-network
#2
Gorav Ailawadi, Helena L Chang, Patrick T O'Gara, Karen O'Sullivan, Y Joseph Woo, Joseph J DeRose, Michael K Parides, Vinod H Thourani, Sophie Robichaud, A Marc Gillinov, Wendy C Taddei-Peters, Marissa A Miller, Louis P Perrault, Robert L Smith, Lyn Goldsmith, Keith A Horvath, Kristen Doud, Kim Baio, Annetine C Gelijns, Alan J Moskowitz, Emilia Bagiella, John H Alexander, Alexander Iribarne
RATIONALE: Pneumonia remains the most common major infection after cardiac surgery despite numerous preventive measures. OBJECTIVES: To prospectively examine the timing, pathogens, and risk factors, including modifiable management practices, for postoperative pneumonia and estimate its impact on clinical outcomes. METHODS: A total of 5158 adult cardiac surgery patients were enrolled prospectively in a cohort study across 10 centers. All infections were adjudicated by an independent committee...
February 9, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28339845/expanded-spectrum-%C3%AE-lactamase-producing-escherichia-coli-isolated-from-chickens-with-colibacillosis-in-egypt
#3
D A El-Shazly, S A Nasef, F F Mahmoud, Daniel Jonas
Throughout the world, expanded spectrum β-lactamases (ESBL) are increasing among clinical isolates of Enterobacteriaceae, both in humans and animals. Unfortunately, there is a paucity of data on ESBL or Ampicillin class C β-lactamase (AmpC) in Egypt, although antimicrobial consumption is high in this developing country. This study aims to characterize the resistance mechanisms to expanded spectrum cephalosporins among resistant veterinary Escherichia coli isolates in Egypt. We investigated 50 clinical multi-resistant E...
February 23, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339675/high-reported-rates-of-antimicrobial-resistance-in-indian-neonatal-and-pediatric-blood-stream-infections
#4
Dhanya Dharmapalan, Anita Shet, Vijay Yewale, Mike Sharland
Background.: There is real shortage of national data on antimicrobial resistance rates in Indian neonates and children. A descriptive review was conducted to determine the patterns of antimicrobial resistance in isolates of blood stream infection among hospitalized children in India. Methods.: Published and gray literature on antibiotic resistance in children was searched using "Google Scholar", "Scopus", and "PubMed" databases between January 2000 and July 2015...
February 18, 2017: Journal of the Pediatric Infectious Diseases Society
https://www.readbyqxmd.com/read/28339623/the-molecular-and-clinical-epidemiology-of-extended-spectrum-cephalosporin-and-carbapenem-resistant-enterobacteriaceae-at-4-us-pediatric-hospitals
#5
Danielle M Zerr, Scott J Weissman, Chuan Zhou, Matthew P Kronman, Amanda L Adler, Jessica E Berry, Jaipreet Rayar, Jeff Myers, Wren L Haaland, Carey-Ann D Burnham, Alexis Elward, Jason Newland, Rangaraj Selvarangan, Kaede V Sullivan, Theoklis Zaoutis, Xuan Qin
Objective.: In this report, we aim to describe the epidemiology of extended-spectrum cephalosporin-resistant (ESC-R) and carbapenem-resistant (CR) Enterobacteriaceae infections in children. Methods.: ESC-R and CR Enterobacteriaceae isolates from normally sterile sites of patients aged <22 years from 4 freestanding pediatric medical centers were collected along with the associated clinical data. Results.: The overall frequencies of ESC-R and CR isolates according to hospital over the 4-year study period ranged from 0...
January 19, 2017: Journal of the Pediatric Infectious Diseases Society
https://www.readbyqxmd.com/read/28338347/ceftazidime-avibactam-novel-antimicrobial-combination-for-the-treatment-of-complicated-urinary-tract-infections
#6
Jakhongir F Alidjanov, Moritz Fritzenwanker, Ivan Hoffman, Florian M Wagenlehner
Ceftazidime-avibactam is a combination of a third-generation cephalosporin and a novel non-beta-lactam beta-lactamase inhibitor. This combination was recently recommended for the treatment of complicated urinary tract infections, including acute pyelonephritis, in adults with limited or no alternative treatment options. The current review is aimed to determine activity, efficacy and safety of ceftazidime-avibactam in the treatment of patients with complicated urinary tract infections.
March 24, 2017: Future Microbiology
https://www.readbyqxmd.com/read/28336597/draft-genome-sequence-of-providencia-stuartii-ps71-a-multidrug-resistant-strain-associated-with-nosocomial-infections-in-greece
#7
A Liakopoulos, O Oikonomou, D W Wareham
Providencia stuartii is frequently associated with nosocomial outbreaks and displays intrinsic resistance to many commonly used antimicrobials. We report here the draft genome sequence of a P. stuartii strain carrying acquired resistance genes conferring panresistance to cephalosporins (blaSHV-5 and blaVEB-1), carbapenems (blaVIM-1), and aminoglycosides (rmtB) involved in an outbreak in Greek hospitals.
March 23, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28333579/anaerobic-digestion-of-thermal-alkaline-pretreated-cephalosporin-bacterial-residues-for-methane-production
#8
Guixia Li, Weizhang Zhong, Rui Wang, Jiaqi Chen, Zaixing Li
Optimum anaerobic conditions of ephalosporin bacterial residues after thermal-alkaline pretreatment were determined by orthogonal experiments. And through biochemical methane potential tests (BMPs) for cephalosporin bacterial residues, the ability for bacterial degradation of cephalosporin was also evaluated. The thermal-alkaline pretreatment with the optimum values of 6% NaOH at 105°C for 15 min significantly improved digestion performance. With the thermal-alkaline pretreatment, the specific methane yield of the pretreated cephalosporin bacterial residue increased by 254...
March 23, 2017: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/28329642/effect-of-antibiotic-exposure-on-stevens-johnson-syndrome-sjs-and-toxic-epidermal-necrolysis-ten
#9
Katherine J Sullivan, Robert J Valuck, Meghan N Jeffres, Heather D Anderson
BackgroundAntibiotics are commonly implicated in Stevens-Johnson syndrome (SJS), overlap syndrome (SJS-TEN), and Toxic Epidermal Necrolysis (TEN), rare disorders of skin and mucosal membranes, often the result of adverse drug reactions. The objective of this study is to examine associations between SJS, SJS-TEN, and TEN and antibiotic exposure overlapping diagnosis, and 3, 6, and 12 months before diagnosis.MethodsA case-control study was conducted using PharMetrics LifeLink® Health Plan Claims Database (2001-2013)...
September 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28328967/phenotypic-and-molecular-characterization-of-antimicrobial-resistance-in-enterobacter-spp-isolates-from-companion-animals-in-japan
#10
Kazuki Harada, Takae Shimizu, Yujiro Mukai, Ken Kuwajima, Tomomi Sato, Akari Kajino, Masaru Usui, Yutaka Tamura, Yui Kimura, Tadashi Miyamoto, Yuzo Tsuyuki, Asami Ohki, Yasushi Kataoka
The emergence of antimicrobial resistance among Enterobacter spp., including resistance to extended-spectrum cephalosporins (ESC), is of great concern in both human and veterinary medicine. In this study, we investigated the prevalence of antimicrobial resistance among 60 isolates of Enterobacter spp., including E. cloacae (n = 44), E. aerogenes (n = 10), and E. asburiae (n = 6), from clinical specimens of dogs and cats from 15 prefectures in Japan. Furthermore, we characterized the resistance mechanisms harbored by these isolates, including extended-spectrum β-lactamases (ESBLs) and plasmid-mediated quinolone resistance (PMQR); and assessed the genetic relatedness of ESC-resistant Enterobacter spp...
2017: PloS One
https://www.readbyqxmd.com/read/28325182/antimicrobial-pharmacology-for-the-neonatal-foal
#11
REVIEW
K Gary Magdesian
Neonatal foals are at high risk of developing sepsis, which can be life-threatening. Early antimicrobial use is a critical component of the treatment of sepsis. Because the neonatal foal has unique pharmacologic physiology, antimicrobial choice and dosing are often different than in adult horses. Broad-spectrum, bactericidal, and intravenous antimicrobials should be considered first-line therapy for septic foals. A combination of aminoglycoside and beta-lactam antimicrobial or third-generation cephalosporin is an excellent empirical first choice for treating septic foals, until culture and susceptibility results are available...
April 2017: Veterinary Clinics of North America. Equine Practice
https://www.readbyqxmd.com/read/28324231/occurrence-and-virulence-properties-of-vibrio-and-salinivibrio-isolates-from-tropical-lagoons-of-the-southern-caribbean-sea
#12
Milagro Fernández-Delgado, Paula Suárez, Sandra Giner, Virginia Sanz, Jessy Peña, Damarys Sánchez, M Alexandra García-Amado
The Vibrionaceae are Gram-negative bacteria present in marine and estuarine environments worldwide, including several species known as important pathogens to humans and aquatic organisms. The aim of this research was to investigate the occurrence and virulence properties of Vibrio and Salinivibrio isolated from lagoons at Cuare Wildlife Refuge and Margarita Island in the southern Caribbean Sea. Water, plankton and oyster samples were collected during October 2011 and March 2012 and examined by specific PCR and culture methods...
March 21, 2017: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/28323856/risk-factors-for-esbl-producing-escherichia-coli-on-pig-farms-a-longitudinal-study-in-the-context-of-reduced-use-of-antimicrobials
#13
Wietske Dohmen, Alejandro Dorado-García, Marc J M Bonten, Jaap A Wagenaar, Dik Mevius, Dick J J Heederik
The presence of extended-spectrum beta-lactamase-producing Escherichia coli (ESBL-E. coli) in food animals is a public health concern. This study aimed to determine prevalence of ESBL-E. coli on pig farms and to assess the effect of reducing veterinary antimicrobial use (AMU) and farm management practices on ESBL-E. coli occurrence on pig farms. During 2011-2013, 36 Dutch conventional pig farms participated in a longitudinal study (4 sampling times in 18 months). Rectal swabs were taken from 60 pigs per farm and pooled per 6 pigs within the same age category...
2017: PloS One
https://www.readbyqxmd.com/read/28321350/shigellosis-caused-by-ctx-m-type-esbl-producing-shigella-flexneri-in-two-siblings-of-rural-nepal-first-case-report-from-the-country
#14
Narayan Prasad Parajuli, Govardhan Joshi, Bashu Dev Pardhe, Jyotsna Shakya, Anjeela Bhetwal, Shreena Shakya, Roshan Pandit, Sumesh Shreekhanda Shrestha, Puspa Raj Khanal
Shigellosis is an acute infectious disease characterized as severe bloody diarrhea (dysentery) and is accountable for a significant burden of morbidity and mortality especially in children under the age of 5 years. Antimicrobial therapy is required in the cases of severe dysentery associated with Shigella. However, emergence of multidrug resistant (MDR) strains of Shigella spp. over the last two decades has restricted the use of common therapeutic antimicrobials. In MDR strains, the third-generation cephalosporins have been used for the treatment, but, unfortunately, emerging reports of enzyme mediated β-lactam resistance among Shigella isolates from various parts of the world have greatly compromised the therapy of pediatric dysentery...
2017: Case Reports in Infectious Diseases
https://www.readbyqxmd.com/read/28320728/mutations-at-arg220-and-thr237-in-per-2-%C3%AE-lactamase-impact-on-conformation-activity-and-susceptibility-to-inhibitors
#15
Melina Ruggiero, Lucrecia Curto, Florencia Brunetti, Eric Sauvage, Moreno Galleni, Pablo Power, Gabriel Gutkind
PER-2 accounts for up to 10% of oxyimino-cephalosporin resistance in Klebsiella pneumoniae and Escherichia coli in Argentina, and hydrolyzes both cefotaxime and ceftazidime with high catalytic efficiencies (kcat/Km). Through crystallographic analyses, we recently proposed the existence of a hydrogen-bond network connecting Ser70-Gln69-oxyanion water-Thr237-Arg220 that might be important for the activity and inhibition of the enzyme. Mutations at Arg244 in most class A β-lactamases (as TEM and SHV) reduce susceptibility to mechanism-based inactivators, and Arg220 in PER β-lactamases is equivalent to Arg244...
March 20, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28320396/occurrence-of-bla-dha-1-mediated-cephalosporin-resistance-in-escherichia-coli-and-their-transcriptional-response-against-cephalosporin-stress-a-report-from-india
#16
Birson Ingti, Deepjyoti Paul, Anand Prakash Maurya, Debajyoti Bora, Debadatta Dhar Chanda, Atanu Chakravarty, Amitabha Bhattacharjee
BACKGROUND: 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. METHODS: Screening of AmpC β-lactamase phenotypically by modified three dimensional extract method followed by Antimicrobial Susceptibility and MIC determination...
March 21, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/28317140/comparison-of-the-effects-of-cefazolin-and-ceftriaxone-on-canine-chondrocyte-culture
#17
P Siengdee, W Pradit, T Euppayo, S Chomdej, K Nganvongpanit
Cephalosporins (CEFs) are antibiotics frequently used to treat bone infections and septic arthritis. The effects of CEFs on chondrocytes have not been studied until now. Cefazolin (cef1) and ceftriaxone (cef3), first-and third-generation CEFs, were selected to investigate their direct effects on normal and osteoarthritic (OA) primary canine chondrocytes, which were either nonstimulated or stimulated with the pro-inflammatory cytokine IL-1β. In our results, treatment with CEFs increased the negative effects on both conditioned normal and OA chondrocytes, especially when applied to IL-1β-stimulated cells (inflammatory stimulus)...
March 19, 2017: Journal of Veterinary Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28316051/pathogenic-multiple-antimicrobial-resistant-escherichia-coli-serotypes-in-recreational-waters-of-mumbai-india-a-potential-public-health-risk
#18
Aayushi Maloo, Abhay B Fulke, Najmuddin Mulani, Soniya Sukumaran, Anirudh Ram
Globally, coastal waters have emerged into a pool of antibiotic resistance genes and multiple antibiotic resistant microorganisms, and pathogenicity of these resistant microorganisms in terms of serotypes and virulence genes has made the environment vulnerable. The current study underscores the presence of multiple antibiotic resistant pathogenic serotypes and pathotypes of Escherichia coli, the predominant faecal indicator bacteria (FIB), in surface water and sediment samples of famous recreational beaches (Juhu, Versova, Mahim, Dadar, and Girgaon) of Mumbai...
March 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28315452/comparing-the-therapeutic-efficacies-of-third-generation-cephalosporins-and-broader-spectrum-%C3%AE-lactams-as-appropriate-empirical-therapy-in-adults-with-community-onset-monomicrobial-enterobacteriaceae-bacteraemia-a-propensity-score-matched-analysis
#19
Chung-Hsun Lee, Chih-Chia Hsieh, Ming-Yuan Hong, Yuan-Pin Hung, Wen-Chien Ko, Ching-Chi Lee
In this study, the therapeutic efficacy of third-generation cephalosporins (3GCs) was compared with that of broader-spectrum β-lactams (BSBLs) [fourth-generation cephalosporins (4GCs) and carbapenems] as empirical therapy in adults with community-onset monomicrobial Enterobacteriaceae bacteraemia. Compared with those in the 3GC group (n = 477), a significantly higher proportion of patients in the BSBL group (n = 141) had initial presentation with severe sepsis or septic shock, critical illness (Pitt bacteraemia score ≥4) at bacteraemia onset and fatal co-morbidities (McCabe classification)...
March 14, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28314920/-new-antibiotics-standstill-or-progress
#20
J Rademacher, T Welte
The development of resistance to antibiotics has been ignored for a long time. But nowadays, increasing resistance is an important topic. For a decade no new antibiotics had been developed and it is not possible to quickly close this gap of new resistance and no new drugs. This work presents six new antibiotics (ceftaroline, ceftobiprole, solithromycin, tedizolid, ceftolozane/tazobactam, ceftazidime/avibactam). In part, only expert opinions are given due to lack of study results.The two 5th generation cephalosporins ceftaroline and ceftobiprole have beside their equivalent efficacy to ceftriaxone (ceftaroline) and cefipim (ceftobiprole) high activity against MRSA...
March 17, 2017: Medizinische Klinik, Intensivmedizin und Notfallmedizin
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