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https://www.readbyqxmd.com/read/28504818/characterization-of-escherichia-coli-clinical-isolates-causing-urinary-tract-infections-in-the-community-of-chilpancingo-mexico
#1
Jesús A Hernández-Vergara, Verónica I Martínez-Santos, Romina B Radilla-Vázquez, Jesús Silva-Sánchez, Amalia Vences-Velásquez, Natividad Castro-Alarcón
Escherichia coli is the main cause of urinary tract infections (UTI) in ambulatory patients, especially strains belonging to the B2 phylogenetic group and ST131 clonal group. Antibiotic treatment is usually administered empirically; however, it is not always effective due to bacterial multidrug resistance and the production of extended spectrum β-lactamases (ESBLs). The aim of this study was to characterize E. coli clinical isolates from patients with UTI in a community of the State of Guerrero, Mexico. From January to August 2014, 134 clinical isolates of E...
December 2016: International Microbiology: the Official Journal of the Spanish Society for Microbiology
https://www.readbyqxmd.com/read/28497915/in-vitro-diagnostic-testing-for-antibiotic-allergy
#2
REVIEW
Inmaculada Doña, Maria J Torres, Maria I Montañez, Tahia D Fernández
Allergy to antibiotics is an important worldwide problem, with an estimated prevalence of up to 10% of the population. Reaction patterns for different antibiotics have changed in accordance with consumption trends. Most of the allergic reactions to antibiotics have been reported for betalactams, followed by quinolones and macrolides and, to a lesser extent, to others, such as metronidazole clindamycin and sulfonamides. The diagnostic procedure includes a detailed clinical history, which is not always possible and can be unreliable...
July 2017: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/28456083/microfluidic-photoinduced-chemical-oxidation-for-ru-bpy-3-3-chemiluminescence-a-comprehensive-experimental-comparison-with-on-chip-direct-chemical-oxidation
#3
Afsal Mohammed Kadavilpparampu, Haider A J Al Lawati, Fakhr Eldin O Suliman
For the first time, the analytical figures of merit in detection capabilities of the very less explored photoinduced chemical oxidation method for Ru(bpy)3(2+) CL has been investigated in detail using 32 structurally different analytes. It was carried out on-chip using peroxydisulphate and visible light and compared with well-known direct chemical oxidation approaches using Ce(IV). The analytes belong to various chemical classes such as tertiary amine, secondary amine, sulphonamide, betalactam, thiol and benzothiadiazine...
April 21, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28412864/cutaneous-allergic-drug-reactions-update-on-pathophysiology-diagnostic-procedures-and-differential-diagnostic
#4
Galina Balakirski, Hans F Merk
Important changes in the understanding and management of drug hypersensitivity reactions during the last years result from the increasing importance of biologics in medical practice, which differ in their spectrum of adverse drug reactions (ADRs) from the classical covalent drugs. With regard to covalent drugs, ampicillin and amoxicillin as well as clavulanic acid play an increasing role among ADRs to betalactam antibiotics. Fluoroquinolones are mainly the cause of anaphylactic and photosensitivity reactions...
April 17, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28375040/evolution-of-diagnostic-approaches-in-betalactam-hypersensitivity
#5
Tahia D Fernandez, Cristobalina Mayorga, Maria Salas, Esther Barrionuevo, Teresa Posadas, Adriana Ariza, Jose J Laguna, Esther Moreno, Maria J Torres, Inmaculada Doña, Maria I Montañez
Betalactams are the most widely used drugs against infections and the primary cause of antibiotic hypersensitivity reactions. Reaction patterns for different betalactams have been changing in accordance with consumption trends, and vary among countries. As a consequence, in vivo and in vitro tests have had to change with to keep up with new tendencies. Areas covered: This review is focused on advances in betalactam hypersensitivity diagnosis. Changes in in vivo methods have been limited to the inclusion of new haptens...
June 2017: Expert Review of Clinical Pharmacology
https://www.readbyqxmd.com/read/28340749/validation-of-a-new-method-based-on-salting-out-assisted-liquid-liquid-extraction-and-uhplc-ms-ms-for-the-determination-of-betalactam-antibiotics-in-infant-dairy-products
#6
David Moreno-González, Raquel Rodríguez-Ramírez, Monsalud Del Olmo-Iruela, Ana M García-Campaña
In this work a new multiresidue method has been developed for the determination of 15 betalactam antibiotics in infant milk and yogurt based on follow-on milk by ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS). The separation was achieved in 6min, using a Kinetex Biphenyl Core-Shell column (50mmx2.1mm, 1.7µm), with a mobile phase of water with 0.05% acetic acid and methanol. The analytes were detected in ESI+ with multiple reaction monitoring mode and fragmentation conditions were optimized to obtain the highest sensitivity...
May 15, 2017: Talanta
https://www.readbyqxmd.com/read/28329379/the-lysis-of-pathogenic-escherichia-coli-by-bacteriophages-releases-less-endotoxin-than-by-%C3%AE-lactams
#7
Nicolas Dufour, Raphaëlle Delattre, Jean-Damien Ricard, Laurent Debarbieux
Background.: Other than numerous experimental data assessing phage therapy efficacy, questions regarding safety of this approach are not sufficiently addressed. In particular, as phages can kill bacterial cells within <10 minutes, the associated endotoxin release (ER) in severe infections caused by gram-negative bacteria could be a matter of concern. Methods.: Two therapeutic virulent phages and 4 reference antibiotics were studied in vitro for their ability to kill 2 pathogenic strains of Escherichia coli and generate an ER...
June 1, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/27855057/-sensitivity-and-antibiotic-resistance-in-infections-of-the-musculoskeletal-system
#8
Argenis Mata-Hernández, Adrián Huematzin Rivera-Villa, Adrián Miguel-Pérez, José Manuel Pérez-Atanasio, Rubén Torres-González
BACKGROUND: Infections of the musculoskeletal system are a devastating complication for patients, due to it's long rehabilitation process and even sometimes the removal of the implant, the chronicity of infection, is often due to lack of coverage in empirical antibiotics. METHODS: A retrospective, observational, descriptive cohort study was performed. All cultures form musculoskeletal system infected patients reported of sensitivity and resistance of germs isolated were analyzed...
2016: Revista Médica del Instituto Mexicano del Seguro Social
https://www.readbyqxmd.com/read/27825482/unraveling-genomic-and-phenotypic-nature-of-multidrug-resistant-mdr-pseudomonas-aeruginosa-vrfpa04-isolated-from-keratitis-patient
#9
Murugan N, Malathi J, Umashankar V, Madhavan H N
Multidrug-resistant (MDR) Pseudomonas aeruginosa VRFPA04, obtained from a keratitis patient was found to exhibit resistance to betalactam (Penicillins, cephalosporins, including carbapenems, except aztreonam), aminoglycosides, quinolone group of drugs and susceptible to colistin. The complete genome sequencing of the ocular isolate to measure and ascertain the degree of multidrug resistance in VRFPA04 strain resulted in 6,818,030bp (6.8Mb) genome sizes, which happen to be the third largest genome available in the Genbank to date...
December 2016: Microbiological Research
https://www.readbyqxmd.com/read/27809799/teicoplanin-based-antimicrobial-therapy-in-staphylococcus-aureus-bone-and-joint-infection-tolerance-efficacy-and-experience-with-subcutaneous-administration
#10
Olivier Peeters, Tristan Ferry, Florence Ader, André Boibieux, Evelyne Braun, Anissa Bouaziz, Judith Karsenty, Emmanuel Forestier, Frédéric Laurent, Sébastien Lustig, Christian Chidiac, Florent Valour
BACKGROUND: Staphylococci represent the first etiologic agents of bone and joint infection (BJI), leading glycopeptides use, especially in case of methicillin-resistance or betalactam intolerance. Teicoplanin may represent an alternative to vancomycin because of its acceptable bone penetration and possible subcutaneous administration. METHODS: Adults receiving teicoplanin for S. aureus BJI were included in a retrospective cohort study investigating intravenous or subcutaneous teicoplanin safety and pharmacokinetics...
November 3, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27779086/genetic-predictors-of-drug-hypersensitivity
#11
Jose A Cornejo-Garcia, Abderrahim Oussalah, Miguel Blanca, Rosa-Maria Gueant-Rodriguez, Cristobalina Mayorga, Julie Waton, Annick Barbaud, Francesco Gaeta, Antonino Romano, Jean-Louis Gueant
Our knowledge of genetic predisposing factors of drug hypersensitivity reactions (DHRs) is still scarce. The analysis of the genetic basis of these reactions may contribute to dissect the underlying mechanisms. We will outline current knowledge of the genetic predictors of most common DHRs, including reactions to betalactam antibiotics (BLs), nonsteroidal anti-inflammatory drugs (NSAIDs) and biological agents. The predictors of DHRs to BLs are mostly linked to IgE-class switching, IgE pathway and atopy (IL4R, NOD2, LGALS3) in replicated candidate gene studies, and to antigen presentation (HLA-DRA) in the single replicated GWAS performed so far...
2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27778050/-pharmacokinetics-and-pharmacodynamics-of-antibiotics-in-intensive-care
#12
REVIEW
F Sörgel, R Höhl, R Glaser, C Stelzer, M Munz, M Vormittag, M Kinzig, J Bulitta, C Landersdorfer, A Junger, M Christ, M Wilhelm, U Holzgrabe
Optimized dosage regimens of antibiotics have remained obscure since their introduction. During the last two decades pharmacokinetic(PK)-pharmacodynamic(PD) relationships, originally established in animal experiments, have been increasingly used in patients. The action of betalactams is believed to be governed by the time the plasma concentration is above the minimum inhibitory concentration (MIC). Aminoglycosides act as planned when the peak concentration is a multiple of the MIC and vancomycin seems to work best when the area under the plasma vs...
February 2017: Medizinische Klinik, Intensivmedizin und Notfallmedizin
https://www.readbyqxmd.com/read/27731424/the-influence-of-the-carrier-molecule-on-amoxicillin-recognition-by-specific-ige-in-patients-with-immediate-hypersensitivity-reactions-to-betalactams
#13
Adriana Ariza, Cristobalina Mayorga, María Salas, Inmaculada Doña, Ángela Martín-Serrano, Ezequiel Pérez-Inestrosa, Dolores Pérez-Sala, Antonio E Guzmán, María I Montañez, María J Torres
The optimal recognition of penicillin determinants, including amoxicillin (AX), by specific IgE antibodies is widely believed to require covalent binding to a carrier molecule. The nature of the carrier and its contribution to the antigenic determinant is not well known. Here we aimed to evaluate the specific-IgE recognition of different AX-derived structures. We studied patients with immediate hypersensitivity reactions to AX, classified as selective or cross-reactors to penicillins. Competitive immunoassays were performed using AX itself, amoxicilloic acid, AX bound to butylamine (AXO-BA) or to human serum albumin (AXO-HSA) in the fluid phase, as inhibitors, and amoxicilloyl-poli-L-lysine (AXO-PLL) in the solid-phase...
October 12, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27497379/individual-level-effects-of-antibiotics-on-colonizing-otitis-pathogens-in-the-nasopharynx
#14
RANDOMIZED CONTROLLED TRIAL
Marie Gisselsson-Solen, Ann Hermansson, Åsa Melhus
BACKGROUND: Although there is evidence of an association between antibiotic consumption and resistant bacteria on a population level, the relationship on an individual level has been less well studied, particularly in terms of nasopharyngeal colonization. We have therefore analysed this association, using data from a closely followed cohort of children taking part in a vaccination trial. METHODS: 109 children with early onset of acute otitis media (AOM) were randomised to heptavalent pneumococcal conjugate vaccine (PCV7) or no vaccination...
September 2016: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/27328522/relative-expression-of-efflux-pumps-in-multi-drug-resistant-pseudomonas-aeruginosa
#15
Leila Azimi, Amirmorteza Ebrahimzadeh Namvar, Sadaf Jamali, Aida Rastegar Lari, Aslan Bijari, Abdolaziz Rastegar Lari
Pseudomonas aeruginosa is known as an important opportunistic pathogen, resistant to a high number of antibiotics. Efflux pumps are one of the main intrinsic antibiotics resistance mechanisms in P. aeruginosa. MexAB-OprM, MexCD-OprJ, and MexXY-OprM are the main efflux pumps involved in beta-lactam resistant strains which may cause cross resistance to different antimicrobial classes. The aim of this study was to detect relative gene expression in betalactam-resistant clinical P. aeruginosa strains. One hundred fourteen clinical strains of P...
July 2015: Roumanian Archives of Microbiology and Immunology
https://www.readbyqxmd.com/read/27130709/adverse-drug-reactions-associated-with-ceftaroline-use-a-2-center-retrospective-cohort
#16
Kimberly G Blumenthal, James L Kuhlen, Ana A Weil, Christy A Varughese, David W Kubiak, Aleena Banerji, Erica S Shenoy
BACKGROUND: Ceftaroline fosamil is a cephalosporin approved for treating skin and soft tissue infections (SSTIs), including those caused by methicillin-resistant Staphylococcus aureus and community-acquired pneumonia (CAP). OBJECTIVES: We aimed to study ceftaroline use and associated adverse drug reactions (ADRs), including hypersensitivity reactions (HSRs), among inpatients. METHODS: We performed a retrospective electronic health record review of inpatients from Massachusetts General Hospital and Brigham and Women's Hospital who received ceftaroline between May 2012 and February 2015...
July 2016: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/26678823/genetic-variants-associated-with-drugs-induced-immediate-hypersensitivity-reactions-a-prisma-compliant-systematic-review
#17
REVIEW
A Oussalah, C Mayorga, M Blanca, A Barbaud, A Nakonechna, J Cernadas, M Gotua, K Brockow, J-C Caubet, A Bircher, M Atanaskovic, P Demoly, L K Tanno, I Terreehorst, J J Laguna, A Romano, J-L Guéant
Drug hypersensitivity includes allergic (AR) and nonallergic reactions (NARs) influenced by genetic predisposition. We performed a systematic review of genetic predictors of IgE-mediated AR and NAR with MEDLINE and PubMed search engine between January 1966 and December 2014. Among 3110 citations, the search selected 53 studies, 42 of which remained eligible. These eligible studies have evaluated genetic determinants of immediate reactions (IR) to beta-lactams (n = 19), NAR against aspirin (n = 12) and other nonsteroidal anti-inflammatory drugs (NSAIDs) (n = 8), and IR to biologics (n = 3)...
April 2016: Allergy
https://www.readbyqxmd.com/read/26662186/the-role-of-ige-recognition-in-allergic-reactions-to-amoxicillin-and-clavulanic-acid
#18
REVIEW
M J Torres, M I Montañez, A Ariza, M Salas, T D Fernandez, N Barbero, C Mayorga, M Blanca
Betalactam (BL) antibiotics are the drugs most frequently involved in IgE-mediated reactions. The culprit BL varies according to consumption patterns, with amoxicillin (AX) more prevalent in Southern Europe and penicillin V in Scandinavian countries. Nowadays, the combination of AX and clavulanic acid (CLV) is the most highly consumed BL containing medicine worldwide. Both BLs, AX and CLV, can independently be involved in reactions, which poses a diagnostic challenge. In patients with immediate allergic reactions to AX, two patterns of responses have been described, those responding to benzylpenicillin (cross-reactors) and those selective to AX...
February 2016: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/26541549/spectrum-adequacy-of-antibiotic-regimens-for-secondary-peritonitis-a-retrospective-analysis-in-intermediate-and-intensive-care-unit-patients
#19
Cathérine L Steinbach, Christoph Töpper, Thomas Adam, Martin G Kees
BACKGROUND: Secondary peritonitis requires surgical source control and adequate antimicrobial treatment. Antimicrobial regimens are usually selected according to local susceptibility data of individual pathogens against single agents, but this neglects both the polymicrobial nature of the infection and the use of combination therapy. We analysed the probability of common regimens to cover all relevant pathogens isolated in one patient ("spectrum adequacy rate", SAR) in a real-life data set...
November 5, 2015: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/26516455/the-first-six-years-of-surveillance-in-pediatric-and-neonatal-intensive-care-units-in-turkey
#20
Emine Alp, Tülay Orhan, Cemile Atalay Kürkcü, Safiye Ersoy, Mary-Louise McLaws
BACKGROUND: Patients in resourced-limited neonatal and pediatric intensive care units (NICU and PICU) are vulnerable to healthcare associated infections (HAI). We report the incidence of HAI, multidrug resistant microorganisms (MDROs) and the pattern of antibiotic usage in the first six years of a surveillance program in a teaching hospital in Turkey. METHODS: Between 2007 and 2012 surveillance data for HAI, MDROs and antibiotic usage were collected from the infection control department, pathology, hospital admissions and pharmacy...
2015: Antimicrobial Resistance and Infection Control
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