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https://www.readbyqxmd.com/read/28210466/antimicrobial-effects-of-ferula-gummosa-boiss-gum-against-extended-spectrum-%C3%AE-lactamase-producing-acinetobacter-clinical-isolates
#1
Fatemeh Farid Afshar, Parvaneh Saffarian, Hamideh Mahmoodzadeh Hosseini, Fereshteh Sattarian, Mohsen Amin, Abbas Ali Imani Fooladi
BACKGROUND AND OBJECTIVES: Acinetobacter spp. are important causes of nosocomial infections. They possess various antibiotic resistance mechanisms including extended spectrum beta lactamases (ESBLs). The aim of this study was to determine antibiotic resistance profile of Acinetobacter clinical isolates especially among ESBL-producing strains and to investigate the antimicrobial effects of oleo-gum-resin extract and essential oil of Ferula gummosa Boiss. MATERIALS AND METHODS: 120 Acinetobacter strains were isolated from various clinical samples of hospitalized patients in Baqiyatallah hospital, Tehran during 2011-2012...
August 2016: Iranian Journal of Microbiology
https://www.readbyqxmd.com/read/28208858/approach-to-carbapenemase-detection-in-klebsiella-pneumoniae-in-routine-diagnostic-laboratories
#2
Rangnekar Aseem, Shalini Shenoy, Suchitra Shenoy Mala, Shrikala Baliga, Agarwal Ashish
INTRODUCTION: Resistance to Carbapenems in Klebsiella may be due to Carbapenem hydrolysing enzymes. Accurate detection of carbapenemase must be done for patient treatment and epidemiological purposes. AIM: To detect carbapenemase production by performing Modified Hodge Test (MHT), Combined Disk Test (CDT) for Metallo-β-Lactamases (MBL) and PCR for blaKPC gene, to evaluate the performance of MHT using MacConkey Agar (MCA) and to access the value of MHT for carbapenemase detection...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208218/antibiotic-resistance-in-escherichia-coli-in-husbandry-animals-the-african-perspective
#3
REVIEW
Carla Andrea Alonso, Myriam Zarazaga, Rym Ben Sallem, Ahlem Jouini, Karim Ben Slama, Carmen Torres
In the last years different surveillances have been published in Africa, especially in Northern countries, regarding antimicrobial resistance among husbandry animals. Information is still scarce, but the available data shows a worrying picture. Although the highest resistance rates have been described against tetracycline, penicillins and sulphonamides, prevalence of plasmid mediated quinolone resistance genes and extended-spectrum β-lactamase (ESBL) are being increasingly reported. Among ESBLs, the CTX-M-1 group was dominant in most African surveys, being CTX-M-15 the main variant both in animals and humans, except in Tunisia where CTX-M-1 was more frequently detected among E...
February 16, 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28207768/prevalence-of-mdr-pathogens-of-bacterial-meningitis-in-egypt-and-new-synergistic-antibiotic-combinations
#4
Mona M Abdelkader, Khaled M Aboshanab, Marwa A El-Ashry, Mohammad M Aboulwafa
The aim of this study was identifying bacterial pathogens involved in meningitis, studying their antibiotic resistance profiles, investigating the antibiotic resistance genes as well as evaluating the use of various antibiotic combinations. Antibiotic susceptibility tests were evaluated according to CLSI guidelines. Antibiotic combinations were evaluated by calculating the Fractional Inhibitory Concentration (FIC) index. A total of 71 bacterial isolates were recovered from 68 culture positive CSF specimens...
2017: PloS One
https://www.readbyqxmd.com/read/28198105/antibiotic-dependent-perturbations-of-extended-spectrum-beta-lactamase-producing-klebsiella-pneumoniae-proteome
#5
Moo-Jin Suh, Sarah L Keasey, Ernst E Brueggemann, Robert G Ulrich
Extended spectrum beta-lactamase producing Klebsiella pneumoniae (ESBL-KP) causes life-threatening infections in susceptible and immuno-compromised individuals. Because of the emergence of multidrug resistance and tolerance, it is crucial to better understand the mechanisms by which ESBL-KP can adapt to antibiotic stress. The aim of this study was to provide an overview of the global proteome changes occurring in ESBL-KP in response to sub-lethal concentrations of the antibiotics doxycycline (DC, bacteriostatic) and streptomycin (SM, bactericidal), which both impair ribosomal synthesis of bacterial proteins...
February 15, 2017: Proteomics
https://www.readbyqxmd.com/read/28196696/patients-hospitalized-abroad-as-importers-of-multiresistant-bacteria-a-cross-sectional-study
#6
Tamim Khawaja, Juha Kirveskari, Sara Johansson, Juuso Väisänen, Aurora Djupsjöbacka, Annika Nevalainen, Anu Kantele
OBJECTIVES: The pandemic spread of multidrug-resistant (MDR) bacteria poses a threat to healthcare worldwide, with highest prevalence in indigent regions of the (sub)tropics. As hospitalization constitutes a major risk factor for colonization, infection control management in low-prevalence countries urgently needs background data on patients hospitalized abroad. METHODS: We collected data on 1122 patients who, after hospitalization abroad, were treated at the Helsinki University Hospital between 2010 and 2013...
February 11, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28194090/prevalence-and-characterization-of-salmonella-among-humans-in-ghana
#7
Linda Aurelia Andoh, Shabana Ahmed, John Elmerdahl Olsen, Kwasi Obiri-Danso, Mercy Jemima Newman, Japheth Awuletey Opintan, Lisa Barco, Anders Dalsgaard
BACKGROUND: Non-typhoidal Salmonella (NTS) is a public health problem worldwide and particularly in Africa with high disease burden. This study characterized Salmonella isolates from humans in Ghana to determine serovar distribution, phage types, and antimicrobial resistance. Further, the clonal relatedness among isolates was determined. METHODS: One hundred and thirty-seven Salmonella isolates (111 clinical and 26 public toilet) were characterized using standard serotyping, phage typing, and antimicrobial susceptibility testing methods...
2017: Tropical Medicine and Health
https://www.readbyqxmd.com/read/28193648/pharmacodynamics-of-finafloxacin-ciprofloxacin-and-levofloxacin-in-serum-and-urine-against-tem-and-shv-type-extended-spectrum-beta-lactamase-producing-enterobacteriaceae-isolated-from-patients-with-urinary-tract-infections
#8
A Dalhoff, S Schubert, A Vente
Background: Pharmacodynamics of finafloxacin, ciprofloxacin and levofloxacin against ESBL-producing Enterobacteriaceae were compared. As quinolones loose activity in acidic media and in particular in urine, their activities were tested in parallel under conventional conditions and in acidic artificial urine.Methods: TEM- and SHV-type ESBL-producing E. coli and K. pneumoniae and their wild-type counterparts were exposed in a modified Grasso model to serum- and urine-concentrations following oral doses of finafloxacin 800mg qd, immediate- release ciprofloxacin 500mg bid, extended release ciprofloxacin-XR 1000mg qd, levofloxacin 500mg qd, or levofloxacin 750mg qd...
February 13, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28187754/extended-spectrum-beta-lactamase-producing-organisms-causing-urinary-tract-infections-in-sri-lanka-and-their-antibiotic-susceptibility-pattern-a-hospital-based-cross-sectional-study
#9
M M P S C Fernando, W A N V Luke, J K N D Miththinda, R D S S Wickramasinghe, B S Sebastiampillai, M P M L Gunathilake, F H D S Silva, R Premaratna
BACKGROUND: Extended Spectrum Beta- Lactamase producing organisms causing urinary tract infections (ESBL-UTI) are increasing in incidence and pose a major burden to health care. While ESBL producing Klebsiella species seem to account for most nosocomial outbreaks, ESBL-producing E. coli have been isolated from both hospitalized and non-hospitalized patients. Although 95-100% ESBL organisms are still considered sensitive to meropenem, rapid emergence of carbapenem resistance has been documented in many countries...
February 10, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28182124/extended-spectrum-beta-lactamase-and-carbapenemase-producing-enterobacteriaceae-among-ethiopian-children
#10
Melese Hailu Legese, Gebru Mulugeta Weldearegay, Daniel Asrat
BACKGROUND: Infections by extended-spectrum beta-lactamase- (ESBL) and carbapenem-resistant Enterobacteriaceae (CRE) are an emerging problem in children nowadays. Hence, the aim of this study was to determine the prevalence of ESBL- and carbapenemase-producing Enterobacteriaceae among children suspected of septicemia and urinary tract infections (UTIs). METHODS: A cross-sectional study was conducted from January to March 2014. A total of 322 study participants suspected of septicemia and UTIs were recruited...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28182026/prevalence-of-tem-shv-and-ctx-m-beta-lactamase-genes-in-the-urinary-isolates-of-a-tertiary-care-hospital
#11
Trupti Bajpai, M Pandey, M Varma, G S Bhatambare
INTRODUCTION: Extended-spectrum beta-lactamases (ESBLs) are the major cause of resistance to beta-lactam antibiotics such as penicillins, cephalosporins, and monobactams. They are derived from the narrow-spectrum beta-lactamases (TEM-1, TEM-2, or SHV-1) by mutations that alter the amino acid configuration around the enzyme active site. AIM: To determine the prevalence of ESBL (blaTEM, blaCTX-M, and blaSHV) genes among the members of Enterobacteriaceae. METHODOLOGY: The present prospective study was carried out from January 2015 to June 2015 in the Department of Microbiology and Molecular Medicine of a Teaching Tertiary Care Hospital...
January 2017: Avicenna Journal of Medicine
https://www.readbyqxmd.com/read/28181300/synthesis-and-characterization-of-cefotaxime-conjugated-gold-nanoparticles-and-their-use-to-target-drug-resistant-ctx-m-producing-bacterial-pathogens
#12
Sibhghatulla Shaikh, Syed Mohd Danish Rizvi, Shazi Shakil, Talib Hussain, Thamir M Alshammari, Waseem Ahmad, Shams Tabrez, Mohammad H Al-Qahtani, Adel M Abuzenadah
Multidrug-resistance due to 'β lactamases having the expanded spectrum' (ESBLs) in members of Enterobacteriaceae is a matter of continued clinical concern. CTX-M is among the most common ESBLs in Enterobacteriaceae family. In the present study, a nanoformulation of cefotaxime was prepared using gold nanoparticles to combat drug-resistance in ESBL producing strains. Here, two CTX-M-15 positive cefotaxime resistant bacterial strains (i.e. one Escherichia coli and one Klebsiella pneumoniae strain) were used for testing the efficacy of 'cefotaxime loaded gold-nanoparticles'...
February 9, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28181033/clinical-and-microbiological-determinants-of-severe-and-fatal-outcomes-in-patients-infected-with-enterobacteriaceae-producing-extended-spectrum-%C3%AE-lactamase
#13
L Surgers, A Boyd, P-Y Boelle, V Lalande, P-A Jolivot, P-M Girard, G Arlet, C Cambier, A Homor, D Decre, J-L Meynard
Although extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae have become a worldwide public health concern, little is known regarding the clinical course of colonized or infected individuals. Our objective was to characterize the determinants of fatal outcomes related to ESBL-producing microorganisms at a large hospital in Paris, France. In 2012-2013, all consecutive patients with clinical samples testing positive for ESBL-producing Enterobacteriaceae at Saint-Antoine Hospital were identified...
February 8, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28177803/a-survey-of-the-antimicrobial-susceptibility-of-escherichia-coli-isolated-from-sable-island-horses
#14
Mary E Timonin, Jocelyn Poissant, Philip D McLoughlin, Cherise E Hedlin, Joseph E Rubin
The feral horses of Sable Island are a geographically isolated population located ~160 km off the east coast of Nova Scotia, Canada. Because these horses have no contact with domestic animals, minimal contact with people and have never received antimicrobials, they offer a unique opportunity to study the dissemination of antimicrobial resistance in unmanaged populations. As part of an ongoing multi-disciplinary and individual-based monitoring program, we collected feces from 508 geolocalized horses (92 % of the total population) between July and September 2014...
November 7, 2016: Canadian Journal of Microbiology
https://www.readbyqxmd.com/read/28174570/antimicrobial-resistance-and-molecular-epidemiology-of-esbl-producing-escherichia-coli-isolated-from-outpatients-in-town-hospitals-of-shandong-province-china
#15
Zengmin Miao, Song Li, Lei Wang, Wengang Song, Yufa Zhou
This study aimed to investigate antimicrobial resistance and molecular epidemiology of extended-spectrum β-lactamase (ESBL)-producing Escherichia coli (E. coli) isolated from outpatients in town hospitals of Shandong province, China. Antimicrobial susceptibility of ESBL-producing E. coli was tested using the disk diffusion and resistance genes encoding for β-lactamases (blaTEM, blaCTXM, and blaSHV) were detected by polymerase chain reaction (PCR). Multilocus sequence typing (ST) of ESBL-producing E. coli was analyzed in this study...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28172597/p783-ciprofloxacin-resistance-in-esbl-producing-enterobacteriaceae-colonizing-the-gut-in-ibd-patients
#16
V Skuja, K Pekarska, Z Straume, D Rudzīte, E Lavrinoviča, L Piekuse, H Dauvarte, E Vašuka, L Dobelniece, P Zalizko, A Derovs, A Krūmiņa, A Lejnieks
No abstract text is available yet for this article.
February 1, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28167688/implant-associated-esbl-klebsiella-pneumonia-producing-small-colony-variant-bone-and-joint-infection-in-a-healthy-40-year-old-man
#17
Cécile Ronde-Oustau, Sébastien Lustig, Céline Dupieux, Tristan Ferry
No abstract text is available yet for this article.
February 6, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28167543/carbapenem-minimal-inhibitory-concentrations-in-escherichia-coli-and-klebsiella-species-producing-extended-spectrum-beta-lactamases-esbls-in-critical-care-patients-from-2001-2009
#18
J Kristie Johnson, Gwen L Robinson, Lisa L Pineles, Adebola O Ajao, LiCheng Zhao, Jennifer S Albrecht, Anthony D Harris, Kerri A Thom, Jon P Furuno
Extended spectrum β-lactamase (ESBL) -producing Enterobacteriaceae are increasing in prevalence worldwide. Carbapenem antibiotics are used as a first line of therapy against ESBL-producing Enterobacteriaceae. We examined gastrointestinal colonization of carbapenem-resistant-ESBLs (CR-ESBL) among a cohort of critical care patients. In this cohort of patients, we cultured for ESBL-producing Klebsiella spp. and Escherichia coli and then performed MIC susceptibility testing for imipenem, doripenem, meropenem, and ertapenem on the patient's first isolate...
February 6, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28167307/fosfomycin-in-vitro-efficacy-against-multidrug-resistant-isolates-beyond-urinary-isolates
#19
Tulin Demir, Tuncay Buyukguclu
OBJECTIVES: Fosfomycin (FOF) is a bactericidal antimicrobial agent active against a range of Gram-negative bacteria, including multidrug-resistant (MDR) and metallo-β-lactamase (MBL)-producing Enterobacteriaceae. However, data are scarce regarding use of the drug beyond urinary tract infections (UTIs). METHODS: In this study, susceptibility rates to FOF among 290 MDR Enterobacteriaceae isolates were analysed by gradient and disk diffusion tests and the results were compared with agar dilution according to the Clinical and Laboratory Standards Institute (CLSI)...
February 3, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28165890/enterobacteriaceae-harboring-ampc-blacmy-and-esbl-blactx-m-in-migratory-and-nonmigratory-wild-songbird-populations-on-ohio-dairies
#20
Dimitria A Mathys, Blake A Mathys, Dixie F Mollenkopf, Joshua B Daniels, Thomas E Wittum
Extended-spectrum β-lactamases (ESBLs) confer bacterial resistance to critically important antimicrobials, including extended-spectrum cephalosporins (ESCs). Livestock are important reservoirs for the zoonotic food-borne transmission of ESC-resistant enteric bacteria. Our aim is to describe the potential role of migratory and resident wild birds in the epidemiology of ESBL-mediated bacterial resistance on dairy farms. Using mist nets, we sampled wild migratory and resident birds either immediately adjacent to or 600 ft away from free-stall barns on three Ohio dairy farms during the 2014 and 2015 spring migrations...
February 6, 2017: Vector Borne and Zoonotic Diseases
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