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https://www.readbyqxmd.com/read/29444952/treatment-of-infections-caused-by-extended-spectrum-beta-lactamase-ampc-and-carbapenemase-producing-enterobacteriaceae
#1
REVIEW
Jesús Rodríguez-Baño, Belén Gutiérrez-Gutiérrez, Isabel Machuca, Alvaro Pascual
Therapy of invasive infections due to multidrug-resistant Enterobacteriaceae (MDR-E) is challenging, and some of the few active drugs are not available in many countries. For extended-spectrum β-lactamase and AmpC producers, carbapenems are the drugs of choice, but alternatives are needed because the rate of carbapenem resistance is rising. Potential active drugs include classic and newer β-lactam-β-lactamase inhibitor combinations, cephamycins, temocillin, aminoglycosides, tigecycline, fosfomycin, and, rarely, fluoroquinolones or trimethoprim-sulfamethoxazole...
April 2018: Clinical Microbiology Reviews
https://www.readbyqxmd.com/read/29442147/-urosepsis
#2
Mathias W Pletz, Sebastian Weis, Christina Forstner, Florian Wagenlehner
Urosepsis is defined as a severe disease due to organ failure caused by a urinary tract infection. An empirical antibiotic therapy should be instigated within the first hour after diagnosis. Urine cultures and blood cultures should be performed before antibiotic treatment. Further diagnostics should be carried out at an early stage to enable an interventional focus control in the case of urinary tract obstruction or abscess formation, if necessary. Gram-negative pathogens are most frequently isolated. Extended spectrum beta-lactamase (ESBL) forming bacteria as a cause of urosepsis are increasing...
February 7, 2018: Medizinische Klinik, Intensivmedizin und Notfallmedizin
https://www.readbyqxmd.com/read/29437306/clinical-predictors-of-ceftriaxone-resistance-in-microorganisms-causing-febrile-urinary-tract-infections-in-men
#3
Javier Ramos Lázaro, Alex Smithson, Neus Jovè Vidal, María Teresa Batida Vila
OBJECTIVES: Because of high rates of resistance to fluoroquinolones, ceftriaxone has become one of the main options for treating febrile urinary tract infection (FUTI). This study aimed to identify predictors of ceftriaxone resistance in community-acquired FUTIs in men. MATERIAL AND METHODS: Cross-sectional ambispective study enrolling men with FUTIs treated in the emergency department of a local area hospital in Spain. RESULTS: A total of 552 FUTI episodes were studied; 103 (18...
February 2018: Emergencias: revista de la Sociedad Española de Medicina de Emergencias
https://www.readbyqxmd.com/read/29427523/meropenem-and-vaborbactam-stepping-up-the-battle-against-carbapenem-resistant-enterobacteriaceae
#4
Sarah Christina Jane Jorgensen, Michael Joseph Rybak
Vaborbactam (VAB; formerly RPX7009) is a novel beta-lactamase inhibitor based on a cyclic boronic acid pharmacophore with potent inhibitory activity against Ambler class A and C beta-lactamases. It has been co-formulated with meropenem to restore its activity against Klebsiella pneumoniae carbapenemases (KPC). VAB does not inhibit class B or D carbapenemases, nor does it improve the activity of meropenem against multidrug-resistant non-fermenting Gram-negative bacilli, notably Acinetobacter spp. and Pseudomonas aeruginosa...
February 10, 2018: Pharmacotherapy
https://www.readbyqxmd.com/read/29422945/differences-between-the-antibiotic-prescribing-pattern-of-newly-arrived-refugees-in-germany-and-the-german-population
#5
Fabian Kahl, Thomas Kühlein
The number of refugees arriving in Europe increased dramatically in 2015, challenging the German health system. Amongst others, the treatment of infectious diseases is an important topic in refugee healthcare. A high prevalence of multi-drug-resistant organisms has been identified among the refugee population. Still, little is known about the prescription of antibiotic medication for refugees. We conducted a descriptive analysis of all antibiotics prescribed to newly arrived refugees who were treated as outpatients between 10/01/2014 and 09/30/2015 in Erlangen, an average sized German town...
2018: Conflict and Health
https://www.readbyqxmd.com/read/29415186/microbial-spectrum-of-intra-abdominal-abscesses-in-perforating-crohn-s-disease-results-from-a-prospective-german-registry
#6
P A Reuken, W Kruis, C Maaser, N Teich, J Büning, J C Preiß, R Schmelz, T Bruns, S Fichtner-Feigl, A Stallmach
Background: Intra-abdominal abscesses (IAA) are common life threatening complications in patients with Crohn's disease (CD). In addition to interventional drainage and surgical therapy, empirical antibiotic therapy represents a corner stone of treatment but contemporary data on microbial spectra and antimicrobial resistance are scarce. Methods: We recruited 105 patients with CD and IAA from 9 German centers for a prospective registry in order to characterize the microbiological spectrum, resistance profiles, antibiotic therapy and outcome...
February 5, 2018: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/29359842/carbapenem-resistant-klebsiella-pneumoniae-vertebral-osteomyelitis-in-a-renal-transplant-recipient-treated-with-ceftazidime-avibactam
#7
Eris Cani, Farzad Moussavi, Eric Ocheretyaner, Roopali Sharma, Clinton Brown, Brandon Eilertson
Ceftazidime-avibactam (CAZ-AVI) is a novel cephalosporin beta lactamase inhibitor combination that has shown activity against carbapenem-resistant Enterobactericeae. Data are limited on its utilization in the treatment of carbapenem-resistant Klebsiella pneumoniae osteomyelitis in solid organ transplant patients. We describe a case report on the use of CAZ-AVI in the treatment of vertebral osteomyelitis in a renal transplant recipient. This article is protected by copyright. All rights reserved.
January 23, 2018: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/29352469/amoxicillin-current-use-in-swine-medicine
#8
REVIEW
D G S Burch, D Sperling
Amoxicillin has become a major antimicrobial substance in pig medicine for the treatment and control of severe, systemic infections such as Streptococcus suis. The minimum inhibitory concentration 90% (MIC 90) is 0.06 μg amoxicillin/ml, and the proposed epidemiological cut-off value (ECOFF) is 0.5 μg/ml, giving only 0.7% of isolates above the ECOFF or of reduced susceptibility. Clinical breakpoints have not been set for amoxicillin against porcine pathogens yet, hence the use of ECOFFs. It has also been successfully used for bacterial respiratory infections caused by Actinobacillus pleuropneumoniae and Pasteurella multocida...
January 19, 2018: Journal of Veterinary Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/29348810/structure-based-virtual-screening-for-the-discovery-of-novel-inhibitors-of-new-delhi-metallo-%C3%AE-lactamase-1
#9
Francesca Spyrakis, Giuseppe Celenza, Francesca Marcoccia, Matteo Santucci, Simon Cross, Pierangelo Bellio, Laura Cendron, Mariagrazia Perilli, Donatella Tondi
Bacterial resistance has become a worldwide concern after the emergence of metallo-β-lactamases (MBLs). They represent one of the major mechanisms of bacterial resistance against beta-lactam antibiotics. Among MBLs, New Delhi metallo-β-lactamase-1 NDM-1, the most prevalent type, is extremely efficient in inactivating nearly all-available antibiotics including last resort carbapenems. No inhibitors for NDM-1 are currently available in therapy, making the spread of NDM-1 producing bacterial strains a serious menace...
January 11, 2018: ACS Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/29322236/-urosepsis
#10
Mathias W Pletz, Sebastian Weis, Christina Forstner, Florian Wagenlehner
Urosepsis is defined as a severe disease due to organ failure caused by a urinary tract infection. An empirical antibiotic therapy should be instigated within the first hour after diagnosis. Urine cultures and blood cultures should be performed before antibiotic treatment. Further diagnostics should be carried out at an early stage to enable an interventional focus control in the case of urinary tract obstruction or abscess formation, if necessary. Gram-negative pathogens are most frequently isolated. Extended spectrum beta-lactamase (ESBL) forming bacteria as a cause of urosepsis are increasing...
January 10, 2018: Der Urologe. Ausg. A
https://www.readbyqxmd.com/read/29281716/trends-and-patterns-of-antibiotic-consumption-in-china-s-tertiary-hospitals-based-on-a-5-year-surveillance-with-sales-records-2011-2015
#11
Haishaerjiang Wushouer, Ye Tian, Xiao-Dong Guan, Sheng Han, Lu-Wen Shi
The consumption of antibiotics is a major driver in the development of antimicrobial resistance. This study aims to identify the trends and patterns of the total antibiotic consumption in China's tertiary hospitals from 2011 to 2015 by retrospectively analyzing aggregated monthly surveillance data on antibiotic sales made to 468 hospitals from 28 provinces. Antibiotic consumption was expressed in DDD per 1,000 inhabitants per day (DID). We compared population weighted antibiotic consumption patterns in China with European countries using indicators from the European Surveillance of Antimicrobial Consumption (ESAC)...
2017: PloS One
https://www.readbyqxmd.com/read/29275225/the-efflux-pump-inhibitor-phenylalanine-arginine-beta-naphthylamide-pa%C3%AE-n-increases-the-resistance-to-carbapenems-in-chilean-clinical-isolates-of-kpc-producing-k-pneumoniae
#12
Alejandra Vera-Leiva, Sergio Carrasco-Anabalón, Celia A Lima, Nicolás Villagra, Mariana Domínguez, Helia Bello-Toledo, Gerardo González-Rocha
OBJECTIVES: KPC-producing strains present a wide range of MICs of carbapenems; this variation may be due to different gene expression levels of the blaKPC and porin genes, associated with efflux-pumps and the production of ESBLs and/or AmpC β-lactamase. The aim of this study was to determine the role of efflux-pumps inhibited by PAβN in the resistance to carbapenems in Chilean clinical isolates of K. pneumoniae harbouring the gene blaKPC. METHODS: Minimum Inhibitory Concentration (MIC) was determined by the agar dilution method for imipenem, meropenem, ertapenem and ciprofloxacin in the presence and absence of PAβN (25mg/L)...
December 21, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/29238706/angular-phenozaxine-ethers-as-potent-multi-microbial-targets-inhibitors-design-synthesis-and-molecular-docking-studies
#13
Mercy A Ezeokonkwo, Onyinyechi N Ogbonna, Sunday N Okafor, Evelyn U Godwin-Nwakwasi, Fidelia N Ibeanu, Uchechukwu C Okoro
The reaction of diaza-5H-benzo[a]phenoxazin-5-one and 5H-benzo[a]phenoxazin-5-one with various phenols catalyzed by Pd/t-BuXPhos/K3PO4 system gave previously unknown ether derivatives (7a-f and 8a-f) in good yields. UV-visible, FTIR, and 1H NMR data were used to confirm structures of the synthesized compounds. The parent compounds and the derivatives were screened in-silico for their drug-likeness and binding affinities to the microbial targets through molecular docking. Molinspiration software and AutoDock were used for the drug-likeness and docking studies, respectively...
2017: Frontiers in Chemistry
https://www.readbyqxmd.com/read/29237787/point-counterpoint-piperacillin-tazobactam-should-be-used-to-treat-infections-with-esbl-positive-organisms
#14
Audrey Schuetz, Sergio Reyes Salcedo, Pranita D Tamma
Beta-lactam/beta-lactamase inhibitor combinations (BLBLIs) are among the most controversial classes of antibiotic agents available for the treatment of infections caused by extended-spectrum beta-lactamase (ESBL)-producing Gram-negative bacteria (ESBL-GNR). Piperacillin-tazobactam (PTZ) is one of the most frequently utilized antibiotic agents for empiric gram-negative bacterial coverage and remains active against a large proportion of ESBL-GNR. Furthermore, good antimicrobial stewardship practices encourage the use of carbapenem-sparing treatment regimens for infections due to ESBL-GNR...
December 13, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/29229643/cystatin-9-and-c-a-novel-immunotherapy-that-protects-against-multi-drug-resistant-new-delhi-metallo-beta-lactamase-1-producing-klebsiella-pneumoniae
#15
Alex J Holloway, JiehJuen Yu, Bernard P Arulanandam, Sarah M Hoskinson, Tonyia Eaves-Pyles
Multidrug-resistant (MDR) bacterial pneumonia can induce dysregulated pulmonary and systemic inflammation leading to morbidity and mortality. Antibiotics to treat MDR pathogens do not function to modulate the extent and intensity of inflammation and can have serious side effects. Herein, we evaluate the efficacy of two human cysteine proteinase inhibitors, cystatin 9 and cystatin C, as a novel immunotherapeutic treatment to combat MDR New Delhi metallo-beta-lactamase-1 (NDM-1) producing Klebsiella pneumoniae (Kp)...
December 11, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29228168/glutamate-residues-at-positions-162nd-and-164th-influence-the-beta-lactamase-activity-of-shv-14-obtained-from-klebsiella-pneumoniae
#16
Gaurav Kumar, Sarmistha Biswal, Soshina Nathan, Anindya S Ghosh
Extensive production of SHV-14 beta-lactamase makes Klebsiella pneumoniae resistant to beta-lactams. The presence of omega-loop has been reported to influence the beta-lactamase activity, which is also present in SHV-14. Its omega-loop has three glutamates in nearly alternating positions, 162, 164 and 167 but their concise role on the behaviour of SHV-14 is unknown. To uncover the influence of each glutamate on SHV-14, we replaced glutamates with alanine and estimated the effect of each mutation by assessing the change in beta-lactam sensitivities in the surrogate Escherichia coli cells and catalytic efficiencies for hydrolysis with the purified proteins...
December 6, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/29220754/association-of-high-mortality-with-extended-spectrum-%C3%AE-lactamase-esbl-positive-cultures-in-community-acquired-infections
#17
Sumit Ray, Dimple Anand, Sankalp Purwar, Arijit Samanta, Kaustubh V Upadhye, Prasoon Gupta, Debashis Dhar
PURPOSE: Infections due to multidrug resistant organisms have become a serious health concern worldwide. The present study was conducted to investigate the spectrum of microbial resistance pattern in the community and their effects on mortality. METHODS: A retrospective review and analysis of prospectively collected data was done of all patients admitted with diagnosis of sepsis in two tertiary care ICU's for a period of two years. Demographics, culture positivity, microbial spectrum, resistance pattern and outcome data were collected...
October 31, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/29187917/multi-antibiotic-resistant-extended-spectrum-beta-lactamase-producing-bacteria-pose-a-challenge-to-the-effective-treatment-of-wound-and-skin-infections
#18
Angus Nnamdi Oli, Dennis Emeka Eze, Thaddeus Harrison Gugu, Ifeanyi Ezeobi, Ukamaka Nwakaku Maduagwu, Chibueze Peter Ihekwereme
Introduction: The increasing incidence of antibiotic resistant bacteria is a concern both to the clinicians and the patients due to obvious consequences such as treatment failures, prolonged patients' stay in hospital and nosocomial infections. The choice of the first antibiotic therapy in emergency wards in hospitals is usually not based on patient-specific microbial culture and susceptibility test result.This study is aimed at profiling extended-spectrum beta-lactamase (ESBL) producing bacteria associated with wound injuries and highlighting their multi-antibiotic resistance character...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/29184412/a-6-year-study-of-complicated-urinary-tract-infections-in-southern-china-prevalence-antibiotic-resistance-clinical-and-economic-outcomes
#19
Xiaoyan Li, Yunqin Chen, Weiguo Gao, Hao Ye, Zhongchao Shen, Zehuai Wen, Jia Wei
Urinary tract infections (UTIs) are common nosocomial infections. This study evaluated the prevalence, pathogens, antibiotic resistances, clinical outcomes, and hospitalization costs associated with complicated UTIs in southern China, and risk factors delaying patient discharge. We retrospectively reviewed electronic medical records of 4,284 (61.4% women) complicated UTI-related hospitalizations from 2008 to 2013. Average patient age was 61.1 years and median hospital stay was 11 days. Pathogens were isolated from 1,071 urine and 148 blood specimens...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/29158284/the-comparative-in-vitro-activity-of-relebactam-imipenem-and-the-combination-of-the-two-plus-six-comparator-antimicrobial-agents-against-432-strains-of-anaerobic-organisms-including-imipenem-resistant-strains
#20
Ellie J C Goldstein, Diane M Citron, Kerin L Tyrrell, Eliza Leoncio, C Vreni Merriam
Relebactam is an important beta-lactamase inhibitor for certain aerobic organisms but alone it has no anti-anaerobic activity, with most anaerobes having MICs ≥32 μg/ml with the exception of a very few strains. There was no enhancement or antagonism of imipenem activity with the addition of relebactam, including activity against imipenem resistant strains. The relebactam-imipenem combination had excellent overall activity against the anaerobes tested.
November 20, 2017: Antimicrobial Agents and Chemotherapy
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