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betalactam

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https://www.readbyqxmd.com/read/29649276/carbapenem-resistant-gram-negative-pathogens-in-a-german-university-medical-center-prevalence-clinical-implications-and-the-role-of-novel-%C3%AE-lactam-%C3%AE-lactamase-inhibitor-combinations
#1
Juri Katchanov, Lucia Asar, Eva-Maria Klupp, Anna Both, Camilla Rothe, Christina König, Holger Rohde, Stefan Kluge, Florian P Maurer
OBJECTIVES: To determine the spectrum of infections with multidrug-resistant Gram-negative bacteria (MDR-GNB) and the clinical impact of the newly available betalactam/betalactamase inhibitor combinations ceftolozane/tazobactam and ceftazidime/avibactam in a German academic tertiary care center. METHODS: Retrospective analysis. RESULTS: Between September 1, 2015 and August 31, 2016, 119 individual patients (0.22% of all hospital admissions) were colonized or infected with carbapenem-resistant MDR-GNB...
2018: PloS One
https://www.readbyqxmd.com/read/29601960/promising-sub-100-nm-tailor-made-hollow-chitosan-poly-acrylic-acid-nanocapsules-for-antibiotic-therapy
#2
S Belbekhouche, O Mansour, B Carbonnier
Herein, we report on the preparation of ultra-low sized (<100 nm in diameter) biodegradable polymeric capsules for potential applications as nanocontainers in antibiotic therapy. Hollow nanospheres based on the chitosan/poly(acrylic acid) pair are elaborated via (i) the layer-by-layer technique using gold nanoparticles (20 and 60 nm in size) as sacrificial templates, (ii) loading with amoxicillin, a betalactam antibiotic, and (iii) removal of the gold core via cyanide-assisted hydrolysis. Size, dispersity and concentration of the resulting nanocapsules are easily tuned by the nanoparticle templates, while wall thickness is controlled by the number of polyelectrolyte bilayers...
March 19, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29508626/individual-risk-assessment-in-the-diagnosis-of-immediate-type-drug-hypersensitivity-reactions-to-betalactam-and-non-betalactam-antibiotics-using-basophil-activation-test-a-single-center-experience
#3
Antonia Thinnes, Hans F Merk, Gerda Wurpts, Stefani Röseler, Sylvia Lehmann, Klaus Tenbrock, Jens Malte Baron, Galina Balakirski
BACKGROUND: Drug hypersensitivity reactions of immediate type pose a challenging problem, especially, if standard diagnostic procedures do not lead to conclusive results. The aim of this investigation is to identify, whether basophil activation test (BAT) is able to provide additional benefit in the diagnostic evaluation of immediate type drug hypersensitivity reactions to antibiotics in comparison with the routine allergological diagnostic methods. MATERIALS AND METHODS: We investigated patients, who presented to the Department of Dermatology and Allergology of the University Hospital of RWTH Aachen in Germany for diagnostic workup of type I allergic reactions to antibiotics during the period from 2009 to 2012...
March 22, 2018: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/29022658/-legionellosis
#4
David Haefliger, Christian Chuard
Legionellosis refers to the two clinical syndromes caused by Legionella : Pontiac fever, a benign febrile illness and Legionnaires'disease (or pneumonia). Clinically and radiologically, Legionnaires'disease presents itself as a « typical » pneumonia caused by Streptococcus pneumonia. Diagnosis is usually made by using urinary antigen testing. Culture and PCR are also helpful. Legionella is resistant to betalactam antibiotics, and is treated by quinolones or macrolides.
October 11, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28892222/oral-challenge-without-skin-tests-in-children-with-non-severe-beta-lactam-hypersensitivity-time-to-change-the-paradigm
#5
Luis Moral, Jean-Christoph Caubet
Suspected allergy to penicillins and cephalosporins is very common in childhood. After a proper evaluation, allergy will be confirmed only in a small portion of them. Intradermal tests are usually part of the allergy workup, but they are painful for children and time-consuming, and their role has been debated. A systematic review found only two studies reporting a positive predictive value of skin tests in children of 36% and 33%, respectively, leading to a high rate of inaccurate diagnosis. Moreover, considering that skin tests are negative in more than 90%-95% of cases, an oral provocation test (OPT) is finally needed to confirm tolerance in most of these children...
December 2017: Pediatric Allergy and Immunology
https://www.readbyqxmd.com/read/28709370/sewers-as-potential-reservoirs-of-antibiotic-resistance
#6
Olga Auguet, Maite Pijuan, Carles M Borrego, Sara Rodriguez-Mozaz, Xavier Triadó-Margarit, Saulo Varela Della Giustina, Oriol Gutierrez
Wastewater transport along sewers favors the colonization of inner pipe surfaces by wastewater-derived microorganisms that grow forming biofilms. These biofilms are composed of rich and diverse microbial communities that are continuously exposed to antibiotic residues and antibiotic resistant bacteria (ARB) from urban wastewater. Sewer biofilms thus appear as an optimal habitat for the dispersal and accumulation of antibiotic resistance genes (ARGs). In this study, the concentration of antibiotics, integron (intI1) and antibiotic resistance genes (qnrS, sul1, sul2, blaTEM , blaKPC , ermB, tetM and tetW), and potential bacterial pathogens were analyzed in wastewater and biofilm samples collected at the inlet and outlet sections of a pressurized sewer pipe...
December 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28705498/-hepatonephritis-during-the-treatment-of-malaria-by-the-therapeutic-combinations-from-a-pharmacovigilance-database
#7
Mamadou Kamagaté, Check Oumar Diallo, David Meless, Thérèse Daubrey-Potey, Augustine Kakou, Éric Balayssac, Kanga Sita N'zue, Jean Claude Yavo, Henri Die-Kakou
INTRODUCTION: Prior studies have shown an association between the onset of hepatonephritis and the use of arteminisin-based combination therapy (ACT) during the treatment of uncomplicated malaria. The objective of this study was to identify the risk factors of hepatonephritis occurrence because of the uncertainty regarding the appearance and the aggravation of this syndrome. METHODS: A case-non case study was carried out on 428 notifications of pharmacovigilance extracted from the database of the clinical pharmacology department of the teaching hospital of Cocody from 2008 to 2012...
October 2017: Thérapie
https://www.readbyqxmd.com/read/28661328/reduction-of-non-betalactam-antibiotics-cod-by-combined-coagulation-and-advanced-oxidation-processes
#8
Ahmad Reza Yazdanbakhsh, Amir Sheikh Mohammadi, Abdol Azim Alinejad, Ghasem Hassani, Sohrab Golmohammadi, Seyed Mohsen Mohseni, Mahdieh Sardar, Vali Sarsangi
  The present study evaluates the reduction of antibiotic COD from wastewater by combined coagulation and advanced oxidation processes (AOPS). The reduction of Azithromycin COD by combined coagulation and Fenton-like processes reached a maximum 96.9% at a reaction time of 30 min, dosage of ferric chloride 120 mg/L, dosages of Fe0 and H2O2of 0.36mM/L and 0.38 mM/L, respectively. Also, 97.9% of Clarithromycin COD reduction, was achieved at a reaction time of 30 min, dosage of ferric chloride 120 mg/L, dosages of Fe0 and H2O2 of 0...
November 1, 2016: Water Environment Research: a Research Publication of the Water Environment Federation
https://www.readbyqxmd.com/read/28628008/basophil-histamine-release-induced-by-amoxicilloyl-poly-l-lysine-compared-with-amoxicillin-in-patients-with-ige-mediated-allergic-reactions-to-amoxicillin
#9
F Arribas, S Falkencrone, J Sola, M P Gomez-Serranillos, J J Laguna, M I Montañez, T D Fernandez, D Rodríguez, F Pineda, P S Skov, C Mayorga, M J Torres
BACKGROUND: Amoxicillin (AX) is the ß-lactam most often involved in IgE-mediated reactions. Diagnosis is based mainly on skin testing, although sensitivity is not optimal. We produced a new AX derivative, amoxicilloyl-poly-L-lysine (APL), and analyzed its recognition of IgE using the passive histamine release test (pHRT). METHODS: The study population comprised patients (n=19) with confirmed AX allergy and specific IgE to AX and controls (n=10) with good tolerance to AX...
2017: Journal of Investigational Allergology & Clinical Immunology
https://www.readbyqxmd.com/read/28615012/moxifloxacin-monotherapy-versus-combination-therapy-in-patients-with-severe-community-acquired-pneumonia-evoked-ards
#10
Tim Rahmel, Sven Asmussen, Jan Karlik, Jörg Steinmann, Michael Adamzik, Jürgen Peters
BACKGROUND: We tested the hypothesis that moxifloxacin monotherapy is equally effective and safe as a betalactam antibiotic based combination therapy in patients with acute respiratory distress syndrome (ARDS) evoked by severe community acquired pneumonia (CAP). METHODS: In a retrospective chart review study of 229 patients with adult respiratory distress syndrome (ARDS) admitted to our intensive care unit between 2001 and 2011, 169 well-characterized patients were identified to suffer from severe CAP...
June 14, 2017: BMC Anesthesiology
https://www.readbyqxmd.com/read/28577519/drug-allergy-evaluation-for-betalactam-hypersensitivity-cross-reactivity-with-cephalosporines-carbapenems-and-negative-predictive-value
#11
Mona Al-Ahmad, Tito Rodriguez-Bouza
BACKGROUND: There are no studies on cross-reactivity of betalactams among patients allergic to penicillin, or on the negative predictive value (NPV) of penicillin allergy evaluation from Arabian Gulf countries OBJECTIVE: We aimed to assess the role and NPV of drug provocation test (DPT) for betalactam hypersensitivity reactions in patients referred for allergy evaluation in Kuwait METHODS: Skin test (ST) was performed for all patients with a history of betalactam hypersensitivity, other than anaphylaxis...
June 1, 2017: Asian Pacific Journal of Allergy and Immunology
https://www.readbyqxmd.com/read/28557971/-travels-and-spreading-of-multi-resistant-bacteria
#12
REVIEW
Aneta Nitsch-Osuch
The increasing number of international travel for tourism, business and for medical reasons rises the risk of spreading of multi-resistant bacteria. It has been shown that an intercontinental travel, mainly to Asia (Indian Subcontinent), promotes a colonization of the digestive tract, mainly by multi-resistant Enterobacteriaceae (MRE) and increases the risk of symptomatic infections caused by these agents. The colonization of the digestive tract by MRE is reported in 29-88% of travelers. It sustains 3 to 12 months, respectively in 10% and 2% of travelers...
May 23, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28504818/characterization-of-escherichia-coli-clinical-isolates-causing-urinary-tract-infections-in-the-community-of-chilpancingo-mexico
#13
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
#14
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
#15
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...
August 5, 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-diagnosic
#16
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...
December 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28375040/evolution-of-diagnostic-approaches-in-betalactam-hypersensitivity
#17
REVIEW
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
#18
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
#19
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
#20
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
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