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https://www.readbyqxmd.com/read/29121650/flavin-containing-monooxygenase-3-fmo3-role-in-busulphan-metabolic-pathway
#1
Ibrahim El-Serafi, Ylva Terelius, Manuchehr Abedi-Valugerdi, Seán Naughton, Maryam Saghafian, Ali Moshfegh, Jonas Mattsson, Zuzana Potácová, Moustapha Hassan
Busulphan (Bu) is an alkylating agent used in the conditioning regimen prior to hematopoietic stem cell transplantation (HSCT). Bu is extensively metabolized in the liver via conjugations with glutathione to form the intermediate metabolite (sulfonium ion) which subsequently is degraded to tetrahydrothiophene (THT). THT was reported to be oxidized forming THT-1-oxide that is further oxidized to sulfolane and finally 3-hydroxysulfolane. However, the underlying mechanisms for the formation of these metabolites remain poorly understood...
2017: PloS One
https://www.readbyqxmd.com/read/29104569/a-linear-19-mer-plant-defensin-derived-peptide-acts-synergistically-with-caspofungin-against-candida-albicans-biofilms
#2
Tanne L Cools, Caroline Struyfs, Jan W Drijfhout, Soňa Kucharíková, Celia Lobo Romero, Patrick Van Dijck, Marcelo H S Ramada, Carlos Bloch, Bruno P A Cammue, Karin Thevissen
Public health problems are associated with device-associated biofilm infections, with Candida albicans being the major fungal pathogen. We previously identified potent antibiofilm combination treatment in which the antifungal plant defensin HsAFP1 is co-administered with caspofungin, the preferred antimycotic to treat such infections. In this study, we identified the smallest linear HsAFP1-derived peptide that acts synergistically with caspofungin or anidulafungin against C. albicans as HsLin06_18, a 19-mer peptide derived from the C-terminal part of HsAFP1...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29103370/boerhaave-s-syndrome-complicated-by-a-saccharomyces-cerevisiae-pleural-empyema-case-report-and-review-of-the-literature
#3
Arno Teblick, Hilde Jansens, Karolien Dams, Francis J Somville, Philippe G Jorens
Objective and Importance Boerhaave's syndrome is a sudden and rare form of oesophageal rupture and is often complicated by local or systemic infection of the mediastinum or pleural cavity. Several micro-organisms are documented as cause of pleural empyema in patients with Boerhaave's syndrome. Intervention (& Technique) We report on a previously healthy 74-year-old male who was admitted at a regional hospital with severe retrosternal and abdominal pain after an episode of vigorous vomiting the morning after ingestion of large quantity of beer...
November 5, 2017: Acta Clinica Belgica
https://www.readbyqxmd.com/read/29098663/antibiotics-reduce-retinal-cell-survival-in-vitro
#4
Amy E Lindsey, Ellen Townes-Anderson
Antibiotics such as gentamicin (an aminoglycoside) and penicillin (a beta-lactam antibiotic) are routinely used in retinal cell and explant cultures. In many cases, these in vitro systems are testing parameters regarding photoreceptor transplantation or preparing cells for transplantation. In vivo, milligram doses of gentamicin are neurotoxic to the retina. However, little is known about the effects of antibiotics to retina in vitro and whether smaller doses of gentamicin are toxic to retinal cells. To test toxicity, retinal cells were dissociated from tiger salamander, placed in culture, and treated with either 20 μg/ml gentamicin, 100 μg/ml streptomycin, 100 U/ml antibiotic/antimycotic, 0...
November 2, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/29097225/effects-of-concurrent-vaginal-miconazole-treatment-on-the-absorption-and-exposure-of-nestorone%C3%A2-segesterone-acetate-and-ethinyl-estradiol-delivered-from-a-contraceptive-vaginal-ring-a-randomized-crossover-drug-drug-interaction-study
#5
Katharine B Simmons, Narender Kumar, Marlena Plagianos, Kevin Roberts, Elena Hoskin, Leo Han, Mohcine Alami, George Creasy, Bruce Variano, Ruth Merkatz
OBJECTIVES: To evaluate the effects of concurrent administration of three vaginal miconazole nitrate formulations on the absorption and exposure of Nestorone® (segesterone acetate) and ethinyl estradiol from a novel contraceptive vaginal ring (NES/EE CVR). STUDY DESIGN: This was an open-label, randomized, crossover, drug-drug interaction study conducted over three menstrual cycles in healthy women with regular menses. We compared systemic exposure to NES and EE by determining area under the curve (AUC8-21d) with CVR-only and CVR with each miconazole treatment...
October 30, 2017: Contraception
https://www.readbyqxmd.com/read/29034294/dataset-on-preparation-of-the-phosphorylated-counterparts-of-a-momordica-charantia-protein-for-studying-antifungal-activities-against-susceptible-dose-dependent-c-albicans-to-antimycotics
#6
Yuanbiao Qiao, Li Song, Chenchen Zhu, Qian Wang, Tianyan Guo, Yanhua Yan, Qingshan Li
The data presented here are related to a research article entitled "Development of a phosphorylated Momordica charantia protein system for inhibiting susceptible dose-dependent C. albicans to available antimycotics: An allosteric regulation of protein" (Qiao et al., 2017) [1]. The data set includes three portions: (1) a relationship between reaction velocities of protein phosphorylation as a function of the substrate concentrations, determined in enzymatic reactions in aid of protein kinases; (2) a result of antifungal susceptibility testing of C...
December 2017: Data in Brief
https://www.readbyqxmd.com/read/29031978/monitoring-the-phase-behavior-of-supersaturated-solutions-of-poorly-water-soluble-drugs-using-fluorescence-techniques
#7
Francesco Tres, Stephen D Hall, Michael A Mohutsky, Lynne S Taylor
Phase transformations of poorly water-soluble drugs, in low concentration, supersaturated aqueous solutions are of considerable interest. Herein, fluorescence lifetime and steady-state fluorescence spectroscopy were employed to investigate the fluorescence properties of the autofluorescent compound, felodipine (a 1,4-dihydropyridine calcium channel blocker), when present as free drug in solution, drug-rich aggregates and crystals. Measurements were also performed in the absence and presence of liver microsomes...
October 11, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29028561/stability-and-drug-release-studies-of-an-antimycotic-nanomedicine-using-hplc-dynamic-light-scattering-and-atomic-force-microscopy
#8
Ayako Watanabe, Mio Takagi, Shigeo Murata, Masaru Kato
Much attention has been paid to nanoparticle-based drug delivery systems to selectively deliver drugs to target organs and tissues. In this study, AmBisome, an antimycotic nanomedicine containing amphotericin B, was chosen as a typical nanomedicine, and analyzed using dynamic light scattering (DLS), an easy method to measure size, and size distribution, atomic force microscopy (AFM) and high-performance liquid chromatography (HPLC). AFM allowed the analysis of shape, besides a detailed size and size distribution...
September 25, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28986661/-aspergillus-in-airway-material-ignore-or-treat
#9
REVIEW
H J F Salzer, C Lange, M Hönigl
Fungi of the genus Aspergillus are ubiquitously present. Even though humans inhale Aspergillus spores daily under natural conditions, Aspergillus-associated pulmonary diseases only occur under special circumstances. Whether an Aspergillus-associated disease develops and which type of Aspergillus-associated disease develops depends on the constitution of the host. The spectrum of Aspergillus-associated pulmonary diseases ranges from allergic diseases, such as hypersensitivity pneumonitis to allergic infectious diseases, such as allergic bronchopulmonary aspergillosis (ABPA) and bronchocentric granulomatosis (BG) to infectious diseases, such as invasive (IA) or semi-invasive aspergillosis (SIA) and chronic pulmonary aspergillosis (CPA)...
November 2017: Der Internist
https://www.readbyqxmd.com/read/28976432/the-efficiency-of-bone-marrow-aspiration-for-the-harvest-of-connective-tissue-progenitors-from-the-human-iliac-crest
#10
Thomas E Patterson, Cynthia Boehm, Chizu Nakamoto, Richard Rozic, Esteban Walker, Nicolas S Piuzzi, George F Muschler
BACKGROUND: The rational design and optimization of tissue engineering strategies for cell-based therapy requires a baseline understanding of the concentration and prevalence of osteogenic progenitor cell populations in the source tissues. The aim of this study was to (1) define the efficiency of, and variation among individuals in, bone marrow aspiration as a means of osteogenic connective tissue progenitor (CTP-O) harvest compared with harvest from iliac cancellous bone, and (2) determine the location of CTP-Os within native cancellous bone and their distribution between the marrow-space and trabecular-surface tissue compartments...
October 4, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28963991/synthesis-biological-evaluation-and-quantitative-structure-active-relationships-of-1-3-thiazolidin-4-one-derivatives-a-promising-chemical-scaffold-endowed-with-high-antifungal-potency-and-low-cytotoxicity
#11
Simone Carradori, Bruna Bizzarri, Melissa D'Ascenzio, Celeste De Monte, Rossella Grande, Daniela Rivanera, Alessanda Zicari, Emanuela Mari, Manuela Sabatino, Alexandros Patsilinakos, Rino Ragno, Daniela Secci
With reference to recent studies reporting on the various biological properties of the thiazolidinone scaffold, we synthesized more than a hundred compounds characterized by a 1,3-thiazolidin-4-one nucleus derivatised at the C2 with a hydrazine bridge linked to (cyclo)aliphatic or hetero(aryl) moieties, and their N-benzylated derivatives. These molecules were assayed as potential anti-Candida agents and they were shown to possess comparable, and in some cases higher biological activity than well-established topical and systemic antimycotic drugs (i...
September 19, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28953977/an-acquired-mechanism-of-antifungal-drug-resistance-simultaneously-enables-candida-albicans-to-escape-from-intrinsic-host-defenses
#12
Irene A I Hampe, Justin Friedman, Mira Edgerton, Joachim Morschhäuser
The opportunistic fungal pathogen Candida albicans frequently produces genetically altered variants to adapt to environmental changes and new host niches in the course of its life-long association with the human host. Gain-of-function mutations in zinc cluster transcription factors, which result in the constitutive upregulation of their target genes, are a common cause of acquired resistance to the widely used antifungal drug fluconazole, especially during long-term therapy of oropharyngeal candidiasis. In this study, we investigated if C...
September 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28925873/silver-nanoparticles-with-high-loading-capacity-of-amphotericin-b-characterization-bactericidal-and-antifungal-effects
#13
Victoria Leonhard, Roxana Valeria Alasino, Adrián Muñoz, Dante Miguel Beltramo
The purpose of this study was to evaluate the most appropriate conditions to generate silver nanoparticles (AgNPs) loaded with a potent antimycotic drug like amphotericin B (AmB), characterize the physicochemical properties, and also evaluate the cytotoxic effect and biological activity of these new nanostructures as a potential nanocarrier for hydrophobic drugs. It was determined that the optimal molar ratio between Ag and AmB is 1/1 given the uniformity of size around 1750 nm of the nanoparticles generated as well as their strongly negative ζ potential of -27 mV, a condition that favors repulsions between AgNPs and inhibiting their aggregation...
September 18, 2017: Current Drug Delivery
https://www.readbyqxmd.com/read/28913873/improvement-of-decellularization-efficiency-of-porcine-aorta-using-dimethyl-sulfoxide-as-a-penetration-enhancer
#14
Selcan Guler, Halil M Aydin, Lan-Xin Lü, Ying Yang
Decellularization of tissues and organs enables researchers to obtain extracellular matrix (ECM) with the natural conformation and chemical composition of specific tissues. However, drawbacks exist such as the structural alteration of ECM or loss of some important components in ECM due to overexposure to chemicals during the decellularization process. In this study, porcine aorta was decellularized by sodium dodecyl sulfate (SDS). Dimethyl sulfoxide (DMSO) was used as a penetration enhancer in the decellularization process to enhance the penetration of SDS, consequently reducing the exposure time of SDS to treated tissues...
September 15, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28904369/antimutagenic-and-antioxidant-activity-of-the-essential-oils-of-citrus-sinensis-and-citrus-latifolia
#15
J D Toscano-Garibay, M Arriaga-Alba, J Sánchez-Navarrete, M Mendoza-García, J J Flores-Estrada, M A Moreno-Eutimio, J J Espinosa-Aguirre, M González-Ávila, N J Ruiz-Pérez
The essential oils of Citrus sinensis and Citrus latifolia showed antimycotic activity against Candida spp. isolated from the oral cavity; they are neither mutagenic on the Ames test nor cytotoxic. Their main components are R-(+)-limonene, β-thujene, α-myrcene and γ-terpinene. The aim of this work was to evaluate their antimutagenic and antioxidant capacities. Antimutagenic properties were evaluated against MNNG and ENNG on S. typhimurium TA100; against 2AA on strain TA98 and in front of 4NQO and NOR on strain TA102...
September 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28891112/candida-albicans-isolates-from-a-single-hospital-show-low-phenotypical-specialization
#16
Enikő Boros, Walter P Pfliegler, Renátó Kovács, Ágnes Jakab, László Majoros, Zoltán Barta, István Pócsi
Candida albicans is the best-studied opportunistic human pathogenic yeast species, and its virulence factors, susceptibility to antimycotics, the diversity of its physiological properties and the determinative factors of these traits are interesting from a clinical as well as from an evolutionary perspective. By applying statistical modeling for the phenotypical differences observed among a collection of 63 C. albicans isolates originating from different clinical care units, from a diverse group of patients with or without mycosis, collected in a Hungarian clinic, we found that (i) host-related aspects like anatomical source, care unit of isolation, patients' age, sex, and disease severity, or ABC genotypes of the isolates had less effect on the phenotypic features of this opportunistic pathogen than host-independent aspects, for example, year or month of isolation; (ii) different phenotypic traits did not show any significant correlations with each other; and (iii) different genotypes displayed no anatomical specialization and rarely showed any significant correlation with parameters of isolation either...
September 11, 2017: Journal of Basic Microbiology
https://www.readbyqxmd.com/read/28869382/our-experience-with-the-use-of-40-benzoic-acid-for-necrectomy-in-deep-burns
#17
Z Jelínková, Y Kaloudová, H Řihová, I Suchánek, P Brychta
INTRODUCTION: Chemical necrectomy of deep burns using 40% benzoic acid has been used extensively by the Department of Burns and Reconstructive Surgery at the University Hospital since its establishment in 1982. In spite of definite advantages for the patient and medical staff, hard data concerning benzoic acid absorption through skin necrosis and patient safety was missing. MATERIAL AND METHODS: We examined 22 burn patients in collaboration with the University Hospital Brno, Department of Clinical Biochemistry...
2017: Acta Chirurgiae Plasticae
https://www.readbyqxmd.com/read/28834733/development-of-a-phosphorylated-momordica-charantia-protein-system-for-inhibiting-susceptible-dose-dependent-c-albicans-to-available-antimycotics-an-allosteric-regulation-of-protein
#18
Yuanbiao Qiao, Li Song, Chenchen Zhu, Qian Wang, Tianyan Guo, Yanhua Yan, Qingshan Li
A regulatory Momordica charantia protein system was constructed allosterically by in vitro protein phosphorylation, in an attempt to evaluate antimycological pluripotency against dose-dependent susceptibilities in C. albicans. Fungal strain lineages susceptible to ketoconazole, econazole, miconazole, 5-flucytosine, nystatin and amphotericin B were prepared in laboratory, followed by identification via antifungal susceptibility testing. Protein phosphorylation was carried out in reactions with 5'-adenylic, guanidylic, cytidylic and uridylic acids and cyclic adenosine triphosphate, through catalysis of cyclin-dependent kinase 1, protein kinase A and protein kinase C respectively...
August 20, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28831255/stratum-corneum-lipid-liposome-encapsulated-panomycocin-preparation-characterization-and-the-determination-of-antimycotic-efficacy-against-candida-spp-isolated-from-patients-with-vulvovaginitis-in-an-in-vitro-human-vaginal-epithelium-tissue-model
#19
Fatih İzgü, Günce Bayram, Kübra Tosun, Demet İzgü
In this study, a liposomal lyophilized powder formulation of panomycocin was developed for therapeutic purposes against vulvovaginal candidiasis which affects 80% of women worldwide. Panomycocin is a potent antimycotic protein secreted by the yeast Wickerhamomyces anomalus NCYC 434. This study involved the preparation of panomycocin-loaded stratum corneum lipid liposomes (SCLLs), characterization of the SCLLs, and determination of antimycotic efficacy of the formulation against Candida albicans and Candida glabrata clinical vaginal isolates in a human vaginal epithelium tissue model...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28783867/absence-of-effect-of-intravaginal-miconazole-clindamycin-nonoxynol-9-and-tampons-on-the-pharmacokinetics-of-an-anastrozole-levonorgestrel-intravaginal-ring
#20
Rüdiger Nave, Stefan Klein, André Müller, Xinying Chang, Joachim Höchel
A study was performed to investigate the effect of an intravaginally administered antimycotic, an antibiotic, and a spermicide plus the co-usage of tampons on the pharmacokinetics (PK) of levonorgestrel (LNG) and anastrozole (ATZ) administered as an intravaginal ring (IVR) releasing 1050 μg ATZ per day and 40 μg LNG per day. In this parallel-group, randomized, open-label study, healthy premenopausal women received an IVR as the main treatment. Comedications were administered on 3 consecutive evenings during treatment with IVR on days 9-11 (group A, 400 mg miconazole; group B, 100 mg clindamycin; group C, 75 mg nonoxynol-9); tampon co-usage (group D) was performed on days 20-23...
August 7, 2017: Journal of Clinical Pharmacology
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