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https://www.readbyqxmd.com/read/28108390/fatal-sepsis-caused-by-multidrug-resistant-bacteroides-fragilis-harboring-a-cfia-gene-and-an-upstream-insertion-sequence-element-in-japan
#1
Itaru Nakamura, Kotaro Aoki, Yuri Miura, Tetsuo Yamaguchi, Tetsuya Matsumoto
Here, we report a case of fatal sepsis resulting from an intra-abdominal infection caused by a Bacteroides fragilis strain containing a CfiA4 metallo-β-lactamase and an upstream insertion sequence (IS) element. Meropenem was used as empiric therapy for septic shock as a result of the intra-abdominal infection, although two rounds of carbapenem treatment had been administered previously. B. fragilis was isolated from two anaerobic blood culture bottles 4 days after the onset of septic shock. Susceptibility testing revealed that the isolate was non-susceptible to all tested agents except metronidazole and tigecycline...
January 17, 2017: Anaerobe
https://www.readbyqxmd.com/read/28108091/implementation-of-a-simple-innovative-system-for-postprescription-antibiotic-review-based-on-computerized-tools-with-shared-access
#2
F Bouchand, A Dinh, A L Roux, B Davido, H Michelon, M Lepainteur, B Legendre, F El Sayed, I Pierre, J Salomon, C Lawrence, C Perronne, M Villart, A-C Crémieux
BACKGROUND: Controlling antibiotic use in healthcare establishments limits their consumption and the emergence of bacterial resistance. AIM: To evaluate the efficiency of an innovative antibiotic stewardship strategy implemented over three years in a university hospital. METHODS: An antimicrobial multi-disciplinary team (AMT) [pharmacist, microbiologist and infectious disease specialist (IDS)] conducted a postprescription review. Specific coding of targeted antibiotics (including broad-spectrum β-lactams, glycopeptides, lipopeptides, fluoroquinolones and carbapenems) in the computerized physician order entry allowed recording of all new prescriptions...
November 26, 2016: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28101836/a-review-of-clinical-outcomes-associated-with-two-meropenem-dosing-strategies
#3
REVIEW
Kyle John Wilby, Ziad Ghantous Nasr, Shereen Elazzazy, Tim T Y Lau, Anas Hamad
Meropenem is a carbapenem antibiotic that exhibits time-dependent bactericidal activity, traditionally dosed intravenously at 1 g every 8 h. In order to maximize its pharmacodynamic activity and reduce costs, an alternative regimen employed by many institutions is 500 mg every 6 h. The objective of this review was to summarize and evaluate published literature comparing clinical outcomes associated with these two meropenem dosing regimens. The literature was searched up to October 2016 using the MEDLINE, EMBASE, and Google Scholar databases...
January 18, 2017: Drugs in R&D
https://www.readbyqxmd.com/read/28101785/acinetobacter-baumannii-bacteraemia-in-patients-with-haematological-malignancy-a-multicentre-retrospective-study-from-the-infection-working-party-of-jiangsu-society-of-hematology
#4
X Wang, L Zhang, A Sun, X Yang, W Sang, Y Jiang, J Cheng, J Wang, M Zhou, B Chen, J Ouyang
Acinetobacter baumannii (Ab) bacteraemia in patients with haematological malignancies is fatal but rarely reported. We explored the clinical characteristics, drug resistances and prognostic factors in these patients. This multicentre, retrospective study was conducted at the department of haematology wards of 18 tertiary hospitals in China from January 2014 to June 2015. The total clinical isolates from every source were collected from patients with haematological malignancy. Haematological malignancy patients diagnosed with Ab bacteraemia were analysed...
January 18, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28101158/prevalence-of-carbapenemases-among-high-level-aminoglycoside-resistant-acinetobacter-baumannii-isolates-in-a-university-hospital-in-china
#5
Yanhong Wang, Min Shen, Jingni Yang, Min Dai, Yaowen Chang, Chi Zhang, Guangxin Luan, Baodong Ling, Xu Jia
The prevalence of aminoglycoside resistant enzymes has previously been reported and extended-spectrum β-lactamase among Acinetobacter baumannii. To track the risk of multidrug-resistant A. baumannii, the present study aimed to determine the prevalence of carbapenemases in high-level aminoglycoside resistant A. baumannii over two years. A total of 118 strains of A. baumannii were consecutively collected in the First Affiliated Hospital of Chengdu Medical College, Chengdu, China. These isolates were investigated on the genetic basis of their resistance to aminoglycosides...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28100600/suitability-of-the-carbapenem-inactivation-method-cim-to-detect-imp-metallo-%C3%AE-lactamase-producing-enterobacteriaceae
#6
Kyoichi Saito, Ryuichi Nakano, Yuki Suzuki, Akiyo Nakano, Yoshihiko Ogawa, Shinsuke Yonekawa, Shiro Endo, Fumiko Mizuno, Kei Kasahara, Keiichi Mikasa, Mitsuo Kaku, Hisakazu Yano
Carbapenem-resistant Enterobacteriaceae (CRE) have become globally distributed in the past decade, resulting in concern over control of hospital infections and antimicrobial therapies (1. 2).….
January 18, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28099062/rectal-carriage-of-extended-spectrum-beta-lactamase-and-carbapenemase-producing-gram-negative-bacilli-in-intensive-care-units-in-tunisia
#7
Samia Hammami, Chaima Dahdeh, Kelthoum Mamlouk, Sana Ferjeni, Elaa Maamar, Zeineb Hamzaoui, Mabrouka Saidani, Salma Ghedira, Mohamed Houissa, Amin Slim, Ilhem Boutiba-Ben Boubaker
This study was conducted to evaluate the rate of fecal carriage of Gram-negative bacilli (GNB) resistant to third-generation cephalosporins (third GC) in patients hospitalized in the intensive care unit (ICU) of Charles Nicolle Hospital of Tunis and to identify the enzymatic mechanisms involved. From February to April 2014, rectal swabs were collected from all patients (n = 38) at admission and once weekly thereafter to identify acquisition. They were cultured on desoxycholate-lactose-agar plates supplemented with cefotaxime (2 mg/L)...
January 18, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28097270/prospective-study-analyzing-risk-factors-and-characteristics-of-healthcare-associated-infections-in-a-urology-ward
#8
José Medina-Polo, Raquel Sopeña-Sutil, Raúl Benítez-Sala, Alba Lara-Isla, Manuel Alonso-Isa, Javier Gil-Moradillo, Juan Justo-Quintas, Esther García-Rojo, Daniel Antonio González-Padilla, Juan Bautista Passas-Martínez, Ángel Tejido-Sánchez
PURPOSE: Healthcare-associated infections (HAIs) in urological patients have special features due to specific risk factors. Our objective was to evaluate the characteristics and risk factors for HAIs in patients hospitalized in a Urology ward. MATERIALS AND METHODS: We evaluated prospectively, from 2012 to 2015, the incidence, types and risk factor for HAIs, microbiological and resistance patterns. RESULTS: The incidence of HAIs was 6.3%. The most common types were urinary infections (70...
January 2017: Investigative and Clinical Urology
https://www.readbyqxmd.com/read/28096984/chryseobacterium-indologenes-a-possible-emergent-organism-resistant-to-carbapenem-antimicrobials-after-stem-cell-transplantation
#9
Osamu Imataki, Makiko Uemura
A 64-year-old female was diagnosed with adult T-cell leukemia/lymphoma. She then underwent an unrelated allogeneic bone marrow transplantation with a reduced-intensity regimen. She achieved engraftment followed by HHV-6 encephalopathy. This was complicated by Chryseobacterium indologenes pneumonia. Chryseobacterium indologenes is now a possible emergent organism resistant to carbapenem after transplantation.
January 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/28096418/multi-institute-analysis-of-carbapenem-resistance-reveals-remarkable-diversity-unexplained-mechanisms-and-limited-clonal-outbreaks
#10
Gustavo C Cerqueira, Ashlee M Earl, Christoph M Ernst, Yonatan H Grad, John P Dekker, Michael Feldgarden, Sinéad B Chapman, João L Reis-Cunha, Terrance P Shea, Sarah Young, Qiandong Zeng, Mary L Delaney, Diane Kim, Ellena M Peterson, Thomas F O'Brien, Mary Jane Ferraro, David C Hooper, Susan S Huang, James E Kirby, Andrew B Onderdonk, Bruce W Birren, Deborah T Hung, Lisa A Cosimi, Jennifer R Wortman, Cheryl I Murphy, William P Hanage
Carbapenem-resistant Enterobacteriaceae (CRE) are among the most severe threats to the antibiotic era. Multiple different species can exhibit resistance due to many different mechanisms, and many different mobile elements are capable of transferring resistance between lineages. We prospectively sampled CRE from hospitalized patients from three Boston-area hospitals, together with a collection of CRE from a single California hospital, to define the frequency and characteristics of outbreaks and determine whether there is evidence for transfer of strains within and between hospitals and the frequency with which resistance is transferred between lineages or species...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28096159/genome-analysis-of-the-carbapenem-and-colistin-resistant-escherichia-coli-isolate-nrz14408-reveal-horizontal-gene-transfer-pathways-towards-pan-resistance-and-enhanced-virulence
#11
Linda Falgenhauer, Hiren Ghosh, Swapnil Doijad, Yancheng Yao, Boyke Bunk, Cathrin Spröer, Martin Kaase, Rolf Hilker, Jörg Overmann, Can Imirzalioglu, Trinad Chakraborty
Colistin is used as a last-resort antibiotic for treating infections caused by multidrug-resistant Enterobacteriaceae, in particular for carbapenem-resistant isolates.….
January 17, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28095794/development-of-an-algorithm-for-phenotypic-screening-of-carbapenemase-producing-enterobacteriaceae-in-the-routine-laboratory
#12
Jérôme Robert, Alix Pantel, Audrey Merens, Elodie Meiller, Jean-Philippe Lavigne, Marie-Hélène Nicolas-Chanoine
BACKGROUND: Carbapenemase-producing Enterobacteriaceae (CPE) are difficult to identify among carbapenem non-susceptible Enterobacteriaceae (NSE). We designed phenotypic strategies giving priority to high sensitivity for screening putative CPE before further testing. METHODS: Presence of carbapenemase-encoding genes in ertapenem NSE (MIC > 0.5 mg/l) consecutively isolated in 80 French laboratories between November 2011 and April 2012 was determined by the Check-MDR-CT103 array method...
January 17, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28095785/risk-factors-and-medical-costs-for-healthcare-associated-carbapenem-resistant-escherichia-coli-infection-among-hospitalized-patients-in-a-chinese-teaching-hospital
#13
Xiujuan Meng, Sidi Liu, Juping Duan, Xun Huang, Pengcheng Zhou, Xinrui Xiong, Ruie Gong, Ying Zhang, Yao Liu, Chenchao Fu, Chunhui Li, Anhua Wu
BACKGROUND: The emergence and spread of Carbapenem-resistant Escherichia coli (CREC) is becoming a serious problem in Chinese hospitals, however, the data on this is scarce. Therefore, we investigate the risk factors for healthcare-associated CREC infection and study the incidence, antibiotic resistance and medical costs of CREC infections in our hospital. METHODS: We conducted a retrospective, matched case-control-control, parallel study in a tertiary teaching hospital...
January 17, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28090041/clinical-characteristics-of-stenotrophomonas-maltophilia-bacteremia-a-regional-report-and-a-review-of-a-japanese-case-series
#14
Hirotaka Ebara, Hideharu Hagiya, Yuto Haruki, Eisei Kondo, Fumio Otsuka
Objective Stenotrophomonas maltophilia is an emerging nosocomial pathogen that causes fatal infections in critically ill or immunocompromised patients. S. maltophilia bacteremia (SMB) is a rare condition, and its clinical characteristics in Japanese settings are not well known. Methods The medical charts of patients with SMB were retrospectively reviewed at two medical facilities (Okayama University Hospital and Tsuyama Chuo Hospital) for seven years. The data were analyzed along with those previously reported from other Japanese facilities...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28089718/cathelicidin-antimicrobial-peptide-from-alligator-mississippiensis-has-antibacterial-activity-against-multi-drug-resistant-acinetobacter-baumanii-and-klebsiella-pneumoniae
#15
Stephanie M Barksdale, Evelyn J Hrifko, Monique L van Hoek
Alligator mississippiensis (American alligator), a member of order Crocodilia, lives in bacteria-laden environments but is not often known to succumb to bacterial infections. Their serum has been shown to have antibacterial activity beyond that of human serum, and it is believed that this activity is partially due to cationic antimicrobial peptides (CAMPs). CAMPs are produced by many organisms as part of the innate immune system. CAMPs are attractive possible therapies against multi-drug resistant bacteria, such as those found in biofilm-infected war wounds, because they seldom cause genetic resistance in bacteria and are effective against antibiotic resistant bacteria...
January 12, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28089138/bloodstream-infections-in-children-caused-by-carbapenem-resistant-versus-carbapenem-susceptible-gram-negative-microorganisms-risk-factors-and-outcome
#16
Yasemin Ozsurekci, Kubra Aykac, Ali Bulent Cengiz, Sevgen Tanır Basaranoglu, Banu Sancak, Sevilay Karahan, Ates Kara, Mehmet Ceyhan
Carbapenems are often considered the last resort agents reserved for treatment of infections due to highly antimicrobial resistant organisms such as A. baumannii and P. aeruginosa. However, carbapenem-resistant Gram-negative (CRGN) pathogens have become much more prevalent in the last decade. The objective of this study was to determine risk factors for and outcome of bacteremia caused by Gram-negative microorganisms in a pediatric tertiary-care hospital. Among 97 patients with hospital-acquired Gram-negative bacteremia, 66 patients with carbapenem-susceptible Gram-negative pathogens (CSGN) were compared with the remaining 31 with CRGN isolates...
January 3, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/28088889/-spontaneous-bacterial-peritonitis
#17
Bálint Velkey, Eszter Vitális, Zsuzsanna Vitális
Spontaneous bacterial peritonitis occurs most commonly in cirrhotic patients with ascites. Pathogens get into the circulation by intestinal translocation and colonize in peritoneal fluid. Diagnosis of spontaneous bacterial peritonitis is based on elevated polymorphonuclear leukocyte count in the ascites (>0,25 G/L). Ascites culture is often negative but aids to get information about antibiotic sensitivity in positive cases. Treatment in stable patient can be intravenous then orally administrated ciprofloxacin or amoxicillin/clavulanic acid, while in severe cases intravenous III...
January 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28087620/e152a-substitution-drastically-affects-ndm-5-activity
#18
Gaurav Kumar, Bagre Issa, Debasish Kar, Sarmistha Biswal, Anindya S Ghosh
New Delhi Metallo beta-lactamase (NDM) is of significant public health concern due to its enormous potential to hydrolyse all major beta-lactams including carbapenems. Amino acid substitutions outside the active site reportedly affect NDM beta-lactamase activities. Here, the effect of amino acid substitutions in the possible omega-like loop region of NDM-5 has been elucidated. Overall, three substitution mutations near active site of NDM-5 were done, namely, E152A, S191A, and D223A and subsequently, the change in antimicrobial resistance was monitored upon expressing each mutant in a suitable host...
January 12, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/28087584/emergence-of-klebsiella-variicola-positive-for-ndm-9-a-variant-of-new-delhi-metallo-%C3%AE-lactamase-in-an-urban-river-in-south-korea
#19
Doris Y W Di, Jeonghwan Jang, Tatsuya Unno, Hor-Gil Hur
OBJECTIVES: To examine the presence of pathogenic bacteria carrying New Delhi metallo-β-lactamase in the environment and to characterize the genome structures of these strains. METHODS: Phenotypic screening of antimicrobial susceptibility and WGS were conducted on three Klebsiella variicola strains possessing NDM-9 isolated from an urban river. RESULTS: Three carbapenem-resistant K. variicola isolated from Gwangju tributary were found to possess blaNDM-9 genes...
January 12, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28085571/systematic-review-of-antimicrobial-resistance-of-clinical-acinetobacter-baumannii-isolates-in-iran-an-update
#20
Hadi Razavi Nikoo, Abdollah Ardebili, Jalal Mardaneh
Treatment of Acinetobacter baumannii has become a medical challenge because of the increasing incidence of multiresistant strains and a lack of viable treatment alternatives. This systematic review attempts to investigate the changes in resistance of A. baumannii to different classes of antibiotics in Iran, with emphasis on the antimicrobial activity of polymyxin B (PMB) and colistin (COL). Biomedical databases were searched for English-published articles evaluating microbiological activity of various antimicrobial agents, including PMB and COL...
January 13, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
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