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https://www.readbyqxmd.com/read/27912842/the-rapid-spread-of-carbapenem-resistant-enterobacteriaceae
#1
REVIEW
Robert F Potter, Alaric W D'Souza, Gautam Dantas
Carbapenems, our one-time silver bullet for multidrug resistant bacterial infections, are now threatened by widespread dissemination of carbapenem-resistant Enterobacteriaceae (CRE). Successful expansion of Enterobacteriaceae clonal groups and frequent horizontal gene transfer of carbapenemase expressing plasmids are causing increasing carbapenem resistance. Recent advances in genetic and phenotypic detection facilitate global surveillance of CRE diversity and prevalence. In particular, whole genome sequencing enabled efficient tracking, annotation, and study of genetic elements colocalized with carbapenemase genes on chromosomes and on plasmids...
November 2016: Drug Resistance Updates: Reviews and Commentaries in Antimicrobial and Anticancer Chemotherapy
https://www.readbyqxmd.com/read/27902368/coagulase-negative-staphylococci-pathogenesis-occurrence-of-antibiotic-resistance-genes-and-in-vitro-effects-of-antimicrobial-agents-on-biofilm-growing-bacteria
#2
Ewa Szczuka, Lucyna Jabłońska, Adam Kaznowski
Coagulase-negative staphylococci (CoNS) are opportunistic pathogens that particularly cause infections in patients with implanted medical devices. The present research was performed to study the virulence potential of 53 clinical isolates of Staphylococcus capitis, Staphylococcus auricularis, Staphylococcus lugdunensis, Staphylococcus simulans, Staphylococcus cohnii, and Staphylococcus caprae. All clinical strains were clonally unrelated. Isolates carried genes encoding resistance to β-lactam (mecA) (15%), aminoglycosides aac(6')/aph(2'') (11%), aph (3')-IIIa (15%), ant(4')-Ia (19%) and MLSB erm(A) (4%), erm(B) (13%), erm(C) (41%), msr(A) (11%) antibiotics...
October 19, 2016: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27898030/assessment-of-the-activity-of-tigecycline-against-gram-positive-and-gram-negative-organisms-collected-from-italy-between-2012-and-2014-as-part-of-the-tigecycline-evaluation-and-surveillance-trial-t-e-s-t
#3
Stefania Stefani, Michael J Dowzicky
As part of the Tigecycline Evaluation and Surveillance Trial (T.E.S.T) we report the in vitro activity of tigecycline and its comparators against Gram-negative and Gram-positive organisms collected from Italian centers between 2012 and 2014. Minimum inhibitory concentrations were determined according to the broth microdilution methodology of the Clinical and Laboratory Standards Institute, and antimicrobial resistance was determined using the European Committee on Antimicrobial Susceptibility Testing interpretive criteria...
November 26, 2016: Pharmaceuticals
https://www.readbyqxmd.com/read/27897206/the-incidence-and-drug-resistance-of-clostridium-difficile-infection-in-mainland-china-a-systematic-review-and-meta-analysis
#4
Chenjie Tang, Lunbiao Cui, Yuqiao Xu, Le Xie, Pengfei Sun, Chengcheng Liu, Wenying Xia, Genyan Liu
It has been widely reported that the incidence and severity of Clostridium difficile infection (CDI) have increased dramatically in North America and Europe. However, little is known about CDI in Mainland China. In this study, we aimed to investigate the incidence of CDI and the main epidemic and drug-resistant strains of C. difficile in Mainland China through meta-analysis of related studies published after the year 2010. A total of 51 eligible studies were included. The pooled incidence of toxigenic C. difficile among patients with diarrhoea was 14% (95% CI = 12-16%)...
November 29, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27891339/bacteriological-profile-of-isolates-from-urine-samples-in-patients-of-benign-prostatic-hyperplasia-and-or-prostatitis-showing-lower-urinary-tract-symptoms
#5
Prem Prakash Mishra, Ved Prakash, Kashmir Singh, H Mog, Sumit Agarwal
INTRODUCTION: The incidence of Benign Prostatic Hyperplasia (BPH) or Prostatitis is increasing considerably worldwide. The Lower Urinary Tract Symptoms (LUTS) due to bacterial aetiology are one of the common factors for the complications among the patients. AIM: To determine the bacterial agents and their antibiotic sensitivity pattern from the urine samples of patients of BPH or Prostatitis showing symptoms of LUTS. MATERIALS AND METHODS: The cross-sectional study was carried out in the Department of Microbiology of Rohilkhand Medical College and Hospital of Northern India from June 2014 to May 2015...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27890419/in-vitro-activity-of-tigecycline-alone-and-antimicrobial-combinations-against-clinical-neisseria-gonorrhoeae-isolates
#6
Hyukmin Lee, Hyunsoo Kim, Young Hee Seo, Dongeun Yong, Seok Hoon Jeong, Kyungwon Lee, Younsop Chong
In this study, we determined the in vitro activity of various combinations of antimicrobial agents against 54 Neisseria gonorrhoeae isolates. The combined activity of ceftriaxone (CRO) and azithromycin (AZM), CRO and doxycycline (DOX), CRO and spectinomycin (SPT), cefixime (CFX) and AZM, CFX and DOX, and CFX and SPT was determined using a checkerboard method. The fractional inhibitory concentration index (FICI) values for all combinations were either additive or indifferent, and no synergistic or antagonistic effects were found...
October 25, 2016: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/27885285/emergence-of-aminoglycoside-resistance-due-to-arma-methylase-in-multi-drug-resistant-acinetobacter-baumannii-isolates-in-a-university-hospital-in-nepal
#7
S Shrestha, T Tada, B Shrestha, T Kirikae, H Ohara, B P Rijal, B M Pokhrel, J B Sherchand
BACKGROUND: The emergence of multidrug-resistant Acinetobacter baumannii associated with hospital-acquired infections has been increasingly reported worldwide. 16S rRNA methylase producing Gram-negative bacteria are highly resistant to all clinically important aminoglycosides. We analyzed A. baumannii clinical isolates resistant to aminoglycosides from hospitalized patients. The objective of this study was to investigate the emergence of armA in A.baumannii species associated with nosocomial infection in a university hospital in Nepal...
May 2016: Journal of Nepal Health Research Council
https://www.readbyqxmd.com/read/27883369/acinetobacter-prosthetic-joint-infection-treated-with-debridement-and-high-dose-tigecycline
#8
Andrea Vila, Hugo Pagella, Claudio Amadio, Alejandro Leiva
Prosthesis retention is not recommended for multidrug-resistant Acinetobacter prosthetic joint infection due to its high failure rate. Nevertheless, replacing the prosthesis implies high morbidity and prolonged hospitalization. Although tigecycline is not approved for the treatment of prosthetic joint infection due to multidrug resistant Acinetobacter baumannii, its appropriate use may preclude prosthesis exchange. Since the area under the curve divided by the minimum inhibitory concentration is the best pharmacodynamic predictor of its efficacy, we used tigecycline at high dose, in order to optimize its efficacy and achieve implant retention in 3 patients who refused prosthesis exchange...
November 8, 2016: Infection & Chemotherapy
https://www.readbyqxmd.com/read/27873126/resistance-to-non-glycopeptide-agents-in-serious-staphylococcus-aureus-infections
#9
REVIEW
Kyle C Molina, Vanthida Huang
The role of vancomycin in the treatment of serious Staphylococcus aureus infections, both methicillin-susceptible and methicillin-resistant, is becoming increasingly ineffective due to increasing MIC and failure. The development of reduced vancomycin susceptibility by S. aureus to glycopeptides highlights the need for clinicians to reexamine the roles of non-glycopeptide therapy. As the use of these alternative non-glycopeptides antimicrobials increases, it will become pertinent to monitor the rates of resistance...
December 2016: Current Infectious Disease Reports
https://www.readbyqxmd.com/read/27867554/tigecycline-combination-for-ventilator-associated-pneumonia-caused-by-extensive-drug-resistant-acinetobacter-baumannii
#10
Hangyong He, Yali Zheng, Bing Sun, Xiao Tang, Rui Wang, Zhaohui Tong
BACKGROUND: Extensive drug-resistant Acinetobacter baumannii (XDR A. baumannii) has emerged as an important pathogen in patients with ventilator-associated pneumonia (VAP) worldwide. This study determined whether or not combination tigecycline (TGC) treatment improved the short-term outcome of patients with XDR A. baumannii-induced VAP. Methods: Fifty-eight patients admitted to our intensive care unit (ICU) with confirmed XDR A. baumannii VAP between January 2011 and June 2013 were retrospectively studied...
October 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/27867083/trends-in-antimicrobial-resistance-among-bacteroides-species-and-parabacteroides-species-in-the-united-states-from-2010-2012-with-comparison-to-2008-2009
#11
REVIEW
D R Snydman, N V Jacobus, L A McDermott, E J C Goldstein, L Harrell, S G Jenkins, D Newton, R Patel, D W Hecht
The susceptibility trends for Bacteroides fragilis and related species against various antibiotics were determined using data from 3 years of surveillance (2010-2012) on 779 isolates referred by 7 medical centers. The antibiotic test panel included imipenem, ertapenem, meropenem, ampicillin-sulbactam, piperacillin-tazobactam, cefoxitin, clindamycin, moxifloxacin, tigecycline, linezolid, chloramphenicol and . MICs were determined using the agar dilution CLSI reference method. Carbapenem resistance remained low (range 1...
November 17, 2016: Anaerobe
https://www.readbyqxmd.com/read/27866659/value-of-propensity-score-matching-for-equalizing-comparator-groups-in-observational-database-studies-a-case-study-in-anti-infectives
#12
C Daniel Mullins, Frank R Ernst, Michelle R Krukas, Joseph Solomkin, Christian Eckmann, Ahmed Shelbaya, Alvaro Quintana, Arlene Reisman
PURPOSE: Propensity score methodologies can reduce bias and confounding in nonrandomized studies, including pharmaceutical comparative effectiveness studies. An observational case study was developed to demonstrate the impact of propensity score adjustments on outcomes (ie, discharge status) of patients hospitalized for complicated intra-abdominal infections. METHODS: Two cohorts were examined: intensive care unit (ICU) (vs non-ICU) patients and tigecycline-treated patients (vs patients receiving other antibiotics)...
November 17, 2016: Clinical Therapeutics
https://www.readbyqxmd.com/read/27862022/binge-ethanol-consumption-increases-inflammatory-pain-responses-and-mechanical-and-cold-sensitivity-tigecycline-treatment-efficacy-shows-sex-differences
#13
Susan E Bergeson, Henry Blanton, Joseph M Martinez, David C Curtis, Caitlyn Sherfey, Brandon Seegmiller, Patrick C Marquardt, Jessica A Groot, Clayton L Allison, Christian Bezboruah, Josée Guindon
BACKGROUND: Physicians have long reported that patients with chronic pain show higher tendencies for alcohol use disorder (AUD), and AUD patients appear to have higher pain sensitivities. The goal of this study was to test 2 hypotheses: (i) binge alcohol consumption increases inflammatory pain and mechanical and cold sensitivities; and (ii) tigecycline is an effective treatment for alcohol-mediated-increased pain behaviors and sensitivities. Both female and male mice were used to test the additional hypothesis that important sex differences in the ethanol (EtOH)-related traits would be seen...
December 2016: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/27862011/effective-reduction-of-acute-ethanol-withdrawal-by-the-tetracycline-derivative-tigecycline-in-female-and-male-dba-2j-mice
#14
Joseph M Martinez, Jessica A Groot, David C Curtis, Clayton L Allison, Patrick C Marquardt, Ashley N Holmes, David S Edwards, David R M Trotter, Peter J Syapin, Deborah A Finn, Susan E Bergeson
BACKGROUND: Alcohol use disorder (AUD) is a spectrum disorder characterized by mild to severe symptoms, including potential withdrawal signs upon cessation of consumption. Approximately five hundred thousand patients with AUD undergo clinically relevant episodes of withdrawal annually (New Engl J Med, 2003, 348, 1786). Recent evidence indicates potential for drugs that alter neuroimmune pathways as new AUD therapies. We have previously shown the immunomodulatory drugs, minocycline and tigecycline, were effective in reducing ethanol (EtOH) consumption in both the 2-bottle choice and drinking-in-the-dark paradigms...
December 2016: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/27859429/tigecycline-reduces-ethanol-intake-in-dependent-and-nondependent-male-and-female-c57bl-6j-mice
#15
Susan E Bergeson, Michelle A Nipper, Jeremiah Jensen, Melinda L Helms, Deborah A Finn
BACKGROUND: The chronic intermittent ethanol (CIE) paradigm is valuable for screening compounds for efficacy to reduce drinking traits related to alcohol use disorder (AUD), as it measures alcohol consumption and preference under physical dependence conditions. Air control-treated animals allow simultaneous testing of similarly treated, nondependent animals. As a consequence, we used CIE to test the hypothesis that tigecycline, a semisynthetic tetracycline similar to minocycline and doxycycline, would reduce alcohol consumption regardless of dependence status...
December 2016: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/27859416/effective-reduction-in-high-ethanol-drinking-by-semisynthetic-tetracycline-derivatives
#16
Peter J Syapin, Joseph M Martinez, David C Curtis, Patrick C Marquardt, Clayton L Allison, Jessica A Groot, Carol Baby, Yazan M Al-Hasan, Ismael Segura-Ulate, Matthew J Scheible, Katy T Nicholson, Jose Luis Redondo, David R M Trotter, David S Edwards, Susan E Bergeson
BACKGROUND: New pharmacotherapies to treat alcohol use disorders (AUD) are needed. Given the complex nature of AUD, there likely exist multiple novel drug targets. We, and others, have shown that the tetracycline drugs, minocycline and doxycycline, reduced ethanol (EtOH) drinking in mice. To test the hypothesis that suppression of high EtOH consumption is a general property of tetracyclines, we screened several derivatives for antidrinking activity using the Drinking-In-the-Dark (DID) paradigm...
December 2016: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/27856079/in-vitro-activity-of-ceftobiprole-on-440-staphylococcus-aureus-strains-isolated-from-bronchopulmonary-infections
#17
E Hodille, L Delouere, C Bouveyron, H Meugnier, M Bes, A Tristan, F Laurent, F Vandenesch, G Lina, O Dumitrescu
OBJECTIVE: We assessed the in vitro activity of ceftobiprole on 440 Staphylococcus aureus clinical strains isolated from bronchopulmonary infections (2010-2014). METHODS: S. aureus isolates were characterized for methicillin resistance, PVL status, and clonal complex. All isolates were tested for minimal inhibitory concentrations (MIC) determination by broth microdilution method for ceftobiprole, ceftaroline fosamil, and comparator antibiotics (linezolid, tigecycline, vancomycin, and daptomycin)...
November 14, 2016: Médecine et Maladies Infectieuses
https://www.readbyqxmd.com/read/27855067/tigecycline-non-susceptibility-occurs-exclusively-in-fluoroquinolone-resistant-escherichia-coli-clinical-isolates-including-the-major-multidrug-resistant-lineages-o25b-h4-st131-h30r-and-o1-st648
#18
Toyotaka Sato, Yuuki Suzuki, Tsukasa Shiraishi, Hiroyuki Honda, Masaaki Shinagawa, Soh Yamamoto, Noriko Ogasawara, Hiroki Takahashi, Satoshi Takahashi, Yutaka Tamura, Shin-Ichi Yokota
Tigecycline (TGC) is a last-line drug for multidrug-resistant Enterobacteriaceae. We investigated the mechanism(s) underlying TGC non-susceptibility (TGC-resistance/intermediate) in Escherichia coli clinical isolates. The MIC of TGC was determined for 277 fluoroquinolone-susceptible isolates (ciprofloxacin [CIP] MIC: <0.125 mg/L, and 194 fluoroquinolone-resistant isolates (CIP MIC: >2 mg/L). The MIC50 and MIC90 for TGC in fluoroquinolone-resistant isolates were 2-fold higher than those in fluoroquinolone-susceptible isolates (MIC50: 0...
November 14, 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27854148/first-detection-of-ges-5-carbapenemase-producing-acinetobacter-baumannii-isolate
#19
Mohamed H Al-Agamy, Katy Jeannot, Taghrid S El-Mahdy, Atef M Shibl, Wael Kattan, Patrick Plésiat, Patrice Courvalin
This study was conducted to investigate the molecular epidemiology of resistance in Acinetobacter baumannii isolates collected at a hospital in Riyadh, Saudi Arabia, from January through December 2010. Twenty-seven A. baumannii were highly resistant (MIC90 > 256 μg/ml) to ceftazidime, cefepime, and aztreonam. Imipenem resistance was seen in 24 isolates, of which 18 had an minimum inhibitory concentration (MIC) >32 μg/mL. Ciprofloxacin, gentamicin, and amikacin resistance was found in 93%, 52%, and 37% of all the isolates, respectively...
November 17, 2016: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/27846898/antibiotics-in-malaria-therapy-which-antibiotics-except-tetracyclines-and-macrolides-may-be-used-against-malaria
#20
REVIEW
Tiphaine Gaillard, Marylin Madamet, Francis Foguim Tsombeng, Jérôme Dormoi, Bruno Pradines
Malaria, a parasite vector-borne disease, is one of the most significant health threats in tropical regions, despite the availability of individual chemoprophylaxis. Malaria chemoprophylaxis and chemotherapy remain a major area of research, and new drug molecules are constantly being developed before drug-resistant parasites strains emerge. The use of anti-malarial drugs is challenged by contra-indications, the level of resistance of Plasmodium falciparum in endemic areas, clinical tolerance and financial cost...
November 15, 2016: Malaria Journal
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