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https://www.readbyqxmd.com/read/28324783/recent-updates-of-carbapenem-antibiotics
#1
REVIEW
Mohammed I El-Gamal, Imen Brahim, Noorhan Hisham, Rand Aladdin, Haneen Mohammed, Amany Bahaaeldin
Carbapenems are among the most commonly used and the most efficient antibiotics since they are relatively resistant to hydrolysis by most β-lactamases, they target penicillin-binding proteins, and generally have broad-spectrum antibacterial effect. In this review, we described the initial discovery and development of carbapenems, chemical characteristics, in vitro/in vivo activities, resistance studies, and clinical investigations for traditional carbapenem antibiotics in the market; imipenem-cilastatin, meropenem, ertapenem, doripenem, biapenem, panipenem/betamipron in addition to newer carbapenems such as razupenem, tebipenem, tomopenem, and sanfetrinem...
March 16, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28319829/evaluation-of-the-pharmacokinetics-of-imipenem-following-regional-limb-perfusion-using-the-saphenous-and-the-cephalic-veins-in-standing-horses
#2
G Kelmer, A J Tatz, E Kdoshim, M Britzi, G Segev
This prospective experimental study goal was to determine the pharmacokinetics of imipenem after intravenous regional limb perfusion (IV-RLP) in standing horses. Nine horses participated in the study; that was approved by the University Animal Care and Use Committee. One thoracic limb or one pelvic limb of each horse was randomly selected. After the veins were catheterized, an Esmarch bandage tourniquet was applied and the catheter was injected with a solution containing 500mg of imipenem. Synovial fluid samples were collected from the fetlock joint and blood samples were collected from the jugular vein...
February 24, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28317803/an-unusual-antibiotic-susceptibility-pattern-in-a-mycobacterium-cosmeticum-strain-isolated-from-the-chesapeake-bay
#3
Vajini Atukorale, Nicholas Boire, Kim Dionne, Stefan Riedel, Nicole Parrish
OBJECTIVE/BACKGROUND: Mycobacterium cosmeticum, first described in 2004, was recovered from a patient undergoing a cosmetic procedure. Subsequently, this species was associated with an outbreak in a nail salon. In all cases, the isolates were susceptible to all antibiotics tested. Recently, however, we recovered a strain of M. cosmeticum from the Chesapeake Bay, resistant to 11 of 14 antimicrobials. The objective of this work was to present our findings on the resistance and susceptibility of this isolate to various antibiotics...
January 2017: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28317802/port-site-infections-by-nontuberculous-mycobacterium-a-retrospective-clinico-microbiological-study
#4
Roumi Ghosh, Soumen Das, Asmita De, Harish Kela, Makhan Lal Saha, Prasanta Kumar Maiti
BACKGROUND: Port-site infection (PSI) is a prevailing, chronic, nagging, treatment refractory complication of laparoscopic surgery (LS). It neutralizes the advantages of minimally invasive surgery and increases morbidity, treatment cost of patient, leading to loss of confidence on operating surgeon. PSIs are preventable with appropriate preoperative, intraoperative, and postoperative measures. Atypical mycobacterium is most commonly associated with nonhealing postlaparoscopic wound infections, causing outbreaks or sporadic cases worldwide...
January 2017: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28315724/molecular-detection-of-six-virulence-genes-in-pseudomonas-aeruginosa-isolates-detected-in-children-with-urinary-tract-infection
#5
Ali Badamchi, Hossein Masoumi, Shima Javadinia, Ramin Asgarian, Azardokht Tabatabaee
Although a vast majority of Urinary tract infections (UTIs) are caused by E. coli, epidemiological reports have indicated an increasing rate of such infections caused by some other opportunistic organisms including Pseudomonas aeruginosa. Antimicrobial susceptibility and pathogenesis mechanisms of P. aeruginosa are poorly understood. The aim of this study was to detect some virulence factor genes and antimicrobial susceptibility patterns of P. aeruginosa isolates detected in patients with UTI, in children hospital of Tehran, Tehran, Iran...
March 15, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28304213/characterization-of-the-genetic-environment-of-the-blaveb-4-gene-associated-with-a-transposable-region-in-a-proteus-mirabilis-clinical-isolate
#6
Paula Espinal, Elisenda Miró, Laia Ramoneda, Manel Flores, Alba Rivera, Pere Coll, Ferran Navarro
Proteus mirabilis is the second most common cause of urinary tract infections and is also an important cause of nosocomial infections. TEM-type and CTX-M-type extended-spectrum β-lactamases (ESBLs) are the most widely distributed in this bacterial species, but minor ESBLs such as the VEB-type have also been identified. The aim of this study was to analyze the genetic environment of the blaVEB-4 gene found in a P. mirabilis clinical isolate recovered in Spain. P. mirabilis N2231 showed resistance to penicillins, cephalosporins, and aminoglycosides, remaining susceptible to imipenem, cefoxitin, β-lactamases inhibitors, and quinolones...
March 17, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28303847/trends-in-drug-resistance-of-acinetobacter-baumannii-over-a-10-year-period-nationwide-data-from-the-china-surveillance-of-antimicrobial-resistance-program
#7
Lei Gao, Yuan Lyu, Yun Li
BACKGROUND: Acinetobacter baumannii has emerged as an important pathogen causing a variety of infections. Using data from the China Surveillance of Antimicrobial Resistance Program conducted biennially, we investigated the secular changes in the resistance of 2917 isolates of A. baumannii from 2004 to 2014 to differ antimicrobial agents. METHODS: Pathogen samples were collected from 17 to 20 hospitals located in the eastern, central, and western regions of China...
March 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28303836/carbapenem-nonsusceptibility-with-modified-oprd-in-clinical-isolates-of-pseudomonas-aeruginosa-from-india
#8
Debarati Choudhury, Anupam Das Talukdar, Manabendra Dutta Choudhury, Anand Prakash Maurya, Debadatta Dhar Chanda, Atanu Chakravorty, Amitabha Bhattacharjee
This study was undertaken to investigate OprD porin-mediated carbapenem nonsusceptibility in clinical isolates of Pseudomonas aeruginosa from a tertiary referral hospital of Northeast India. A total of 267 nonduplicate, consecutive clinical isolates of P. aeruginosa were obtained. Mutation and expression levels of OprD gene were determined in carbapenem-nonsusceptible carbapenemase-nonproducing isolates. Among 19 carbapenem-nonsusceptible carbapenemase-nonproducing isolates, 11 of them demonstrated variable band pattern while performing denaturing gradient gel electrophoresis with amplified products of OprD gene...
January 2017: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28303824/matrix-assisted-laser-desorption-ionisation-time-of-flight-mass-spectrometry-rapid-detection-of-carbapenamase-activity-in-acinetobacter-baumannii-isolates
#9
Noha Abouseada, May Raouf, Eman El-Attar, Pacinte Moez
INTRODUCTION: Carbapenamase-producing Acinetobacter baumannii are an increasing threat in hospitals and Intensive Care Units. Accurate and rapid detection of carbapenamase producers has a great impact on patient improvement and aids in implementation of infection control measures. AIM: In this study, we describe the use of matrix-assisted laser desorption ionisation time-of-flight mass spectrometry (MALDI TOF MS) to identify carbapenamase-producing A. baumannii isolates in up to 3 h...
January 2017: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28298454/in-vitro-activity-of-imipenem-against-carbapenemase-positive-enterobacteriaceae-smart-global-surveillance-program-2008-2014
#10
James A Karlowsky, Sibylle H Lob, Krystyna M Kazmierczak, Robert E Badal, Katherine Young, Mary R Motyl, Daniel F Sahm
The Study for Monitoring Antimicrobial Resistance Trends (SMART) global surveillance program collected 103,960 isolates of Enterobacteriaceae from 2008 to 2014. From this isolate collection all ertapenem-non-susceptible isolates (MIC, ≥1 μg/ml; n = 3,428) and 9,371 isolates of Escherichia coli, Klebsiella pneumoniae, Klebsiella oxytoca, and Proteus mirabilis with an ertapenem-susceptible extended-spectrum β-lactamase (ESBL)-positive phenotype were assessed for the presence of common carbapenemase genes using the Check-MDR CT101 microarray (Check-Points, Wageningen, the Netherlands) and published multiplex PCR assays...
March 15, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28293038/naphthacemycins-novel-circumventors-of-%C3%AE-lactam-resistance-in-mrsa-produced-by-streptomyces-sp-kb-3346-5-i-the-taxonomy-of-the-producing-strain-and-the-fermentation-isolation-and-antibacterial-activities
#11
Atsushi Fukumoto, Yong-Pil Kim, Atsuko Matsumoto, Yoko Takahashi, Makoto Suzuki, Hideyuki Onodera, Hiroshi Tomoda, Hidehito Matsui, Hideaki Hanaki, Masato Iwatsuki, Satoshi Ōmura, Kazuro Shiomi
Screening for circumventors of β-lactam resistance in methicillin-resistant Staphylococcus aureus (MRSA) led us to find 17 novel antibiotics, naphthacemycins A1-A11, B1-B4 and C1-C2. The naphthacemycins were isolated from a cultured broth of Streptomyces sp. KB-3346-5 by repeated silica gel column chromatography and HPLC. Naphthacemycins enhanced imipenem activity 100-500 times against MRSA at 0.5 μg ml(-1), and naphthacemycins A4-A11 themselves showed MIC50 values of 1-4 μg ml(-1) against 22 MRSA strains...
March 15, 2017: Journal of Antibiotics
https://www.readbyqxmd.com/read/28291628/invitro-activity-of-imipenem-relebactam-against-gram-negative-bacilli-isolated-from-patients-with-lower-respiratory-tract-infections-in-the-united-states-in-2015-results-from-the-smart-global-surveillance-program
#12
Sibylle H Lob, Meredith A Hackel, Krystyna M Kazmierczak, Daryl J Hoban, Katherine Young, Mary R Motyl, James A Karlowsky, Daniel F Sahm
The β-lactamase inhibitor relebactam inactivates class A β-lactamases, including KPC-type carbapenemases, and class C β-lactamases. Relebactam combined with imipenem is in clinical development for several indications, including hospital-acquired and ventilator-associated pneumonia. Employing CLSI-defined broth microdilution methodology, we evaluated the activities of imipenem-relebactam (using imipenem MIC breakpoints) and comparators against non-Proteeae Enterobacteriaceae (n=853) and Pseudomonas aeruginosa (n=598) isolated from lower respiratory tract infection samples in 20 hospital laboratories in the United States participating in the 2015 SMART (Study for Monitoring Antimicrobial Resistance Trends) global surveillance program...
March 2, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/28289522/device-associated-infection-rates-mortality-length-of-stay-and-bacterial-resistance-in-intensive-care-units-in-ecuador-international-nosocomial-infection-control-consortium-s-findings
#13
Estuardo Salgado Yepez, Maria M Bovera, Victor D Rosenthal, Hugo A González Flores, Leonardo Pazmiño, Francisco Valencia, Nelly Alquinga, Vanessa Ramirez, Edgar Jara, Miguel Lascano, Veronica Delgado, Cristian Cevallos, Gasdali Santacruz, Cristian Pelaéz, Celso Zaruma, Diego Barahona Pinto
AIM: To report the results of the International Nosocomial Infection Control Consortium (INICC) study conducted in Quito, Ecuador. METHODS: A device-associated healthcare-acquired infection (DA-HAI) prospective surveillance study conducted from October 2013 to January 2015 in 2 adult intensive care units (ICUs) from 2 hospitals using the United States Centers for Disease Control/National Healthcare Safety Network (CDC/NHSN) definitions and INICC methods. RESULTS: We followed 776 ICU patients for 4818 bed-days...
February 26, 2017: World Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28273965/emergence-of-carbapenem-resistant-non-fermenting-gram-negative-bacilli-isolated-in-an-icu-of-a-tertiary-care-hospital
#14
Sonika Agarwal, Barnali Kakati, Sushant Khanduri, Shalini Gupta
INTRODUCTION: The emergence and spread of Multi-Drug Resistant (MDR) Non-Fermenting Gram-Negative Bacilli (NFGNB) in Intensive Care Units (ICU) and their genetic potential to transmit diverse antibiotic resistance regardless of their ability to ferment glucose poses a major threat in hospitals. The complex interplay of clonal spread, persistence, transmission of resistance elements and cell-cell interaction leads to the difficulty in controlling infections caused by these multi drug-resistant strains...
January 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28264656/antimicrobial-susceptibilities-of-aerobic-and-facultative-gram-negative-bacilli-isolated-from-chinese-patients-with-urinary-tract-infections-between-2010-and-2014
#15
Qiwen Yang, Hui Zhang, Yao Wang, Zhipeng Xu, Ge Zhang, Xinxin Chen, Yingchun Xu, Bin Cao, Haishen Kong, Yuxing Ni, Yunsong Yu, Ziyong Sun, Bijie Hu, Wenxiang Huang, Yong Wang, Anhua Wu, Xianju Feng, Kang Liao, Yanping Luo, Zhidong Hu, Yunzhuo Chu, Juan Lu, Jianrong Su, Bingdong Gui, Qiong Duan, Shufang Zhang, Haifeng Shao, Robert E Badal
BACKGROUND: The objective of this study was to investigate the distribution and susceptibility of aerobic and facultative Gram-negative bacilli isolated from Chinese patients with UTIs collected within 48 h (community acquired, CA) or after 48 h (hospital acquired, HA) of hospital admission. METHODS: From 2010 to 2014, the minimum inhibitory concentrations (MICs) of 12 antibiotics for 4,332 aerobic and facultative Gram-negative bacilli, sampled in 21 hospitals in 16 cities, were determined by the broth microdilution method...
March 6, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28261184/carbonyl-cyanide-m-chlorophenylhydrazine-cccp-reverses-resistance-to-colistin-but-not-to-carbapenems-and-tigecycline-in-multidrug-resistant-enterobacteriaceae
#16
John Osei Sekyere, Daniel G Amoako
Background: Carbapenems (CAR), colistin (CST), and tigecycline (TGC) alone or in combination therapy has become the last-resort antibiotics for treating infections caused by multidrug resistant (MDR) bacteria. However, resistance to these reserve antibiotics are increasingly being reported worldwide. Hence, the quest to find other agents that will synergistically restore the efficacy of these antibiotics have increased. Methods: Sixty-three clinical Enterobacteriaceae isolates comprising of Klebsiella pneumoniae (n = 24), Enterobacter spp...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28260939/infectious-anastomotic-pseudoaneurysm-complicating-renal-allograft-case-report-and-review-of-literature
#17
Marvin Mt Chung, Yiu Che Chan, Yuk Law, Stephen Wk Cheng
Infectious anastomotic pseudoaneurysm complicating renal transplant is rare, but probably under-reported with <30 cases worldwide. We report a 45-year-old man with hypertension, diabetes mellitus and end stage renal failure, who had a renal transplant anastomosed to the right external iliac artery and vein. Postoperatively, he made a slow recovery with malaise and persistent vague right iliac fossa discomfort. Ultrasound scan 1 month postoperatively showed perinephric collection, and fluid culture grew Enterococcus faecium and Pseudomonas aeruginosa...
2017: International Journal of Nephrology and Renovascular Disease
https://www.readbyqxmd.com/read/28254249/comparative-evaluation-of-a-new-commercial-media-the-chromagar%C3%A2-msupercarba%C3%A2-for-the-detection-of-carbapenemase-producing-enterobacteriaceae
#18
Ma'ayan Amar, Ohad Shalom, Amos Adler
A new chromogenic-based medium (mSuperCARBA™) was tested for screening carbapenemase-producing Enterobacteriaceae (CPE). mSuperCARBA™ was more sensitive (83%) in detecting CPE isolates (n=69, including KPC, NDM, OXA-48, VIM, and IMI) compared with CHROMAgar™-KPC (65%) and MacConkey agar with Imipenem (69%) with comparable specificity for non carbapenemase-producing, carbapenem-resistant Enterobacteriaceae (n=29).
February 11, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/28241707/-the-analysis-of-pathogens-distribution-and-drug-resistance-of-bacteria-in-sputum-samples-of-pneumoconiosis-patients-combined-with-lower-respiratory-tract-infection
#19
Y Xin, N Zhang
Objective: To guide the rational use of antibiotic drugs in clinical practice for doctors by the analysis of pathogens distribution, transition and drug resistance of bacteria in sputum samples of pneumoconiosis patients combined with lower respiratory tract infection. Methods: 2 199 qualified sputum samples from 214 pneumoconiosis patients collected from January 2008 to December 2012 were examined by bacterium or fungus education. BioMerieux API and Eastern Cowin application software were used to do bacterial identification, and K-B method recommended by the NCCLS was used to take drug sensitivity tests...
January 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28239454/transcriptional-analysis-of-blandm-1-and-copy-number-alteration-under-carbapenem-stress
#20
Deepjyoti Paul, Amitabha Bhattacharjee, Dibyojyoti Bhattacharjee, Debadatta Dhar, Anand Prakash Maurya, Atanu Chakravarty
BACKGROUND: New Delhi metallo beta-lactamase is known to compromise carbapenem therapy and leading to treatment failure. However, their response to carbapenem stress is not clearly known. Here, we have investigated the transcriptional response of blaNDM-1 and plasmid copy number alteration under carbapenem exposure. METHODS: Three blaNDM-1 harboring plasmids representing three incompatibility types (IncFIC, IncA/C and IncK) were inoculated in LB broth with and without imipenem, meropenem and ertapenem...
2017: Antimicrobial Resistance and Infection Control
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