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https://www.readbyqxmd.com/read/28925873/silver-nanoparticles-with-high-loading-capacity-of-amphotericin-b-characterization-bactericidal-and-antifungal-effects
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
https://www.readbyqxmd.com/read/28677080/comparison-of-impact-of-two-decontamination-solutions-on-the-viability-of-the-cells-in-human-amnion
#9
Ingrida Smeringaiova, Peter Trosan, Miluse Berka Mrstinova, Jan Matecha, Jan Burkert, Jan Bednar, Katerina Jirsova
Human amniotic membrane (HAM) is used as an allograft in regenerative medicine or as a source of pluripotent cells for stem cell research. Various decontamination protocols and solutions are used to sterilize HAM before its application, but little is known about the toxicity of disinfectants on HAM cells. In this study, we tested two decontamination solutions, commercial (BASE·128) and laboratory decontamination solution (LDS), with an analogous content of antimycotic/antibiotics for their cytotoxic effect on HAM epithelial (EC) and mesenchymal stromal cells (MSC)...
July 4, 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/28655067/fatal-ulcerative-enteritis-of-the-small-intestine-in-a-patient-with-ulcerative-colitis-treated-with-vedolizumab
#10
Carmen Monasterio, Annette Schmitt-Gräff, Matthias Pohl, Thomas Truschel, Klaus Warnatz, Wolfgang Kreisel, Robert Thimme, Peter Hasselblatt
Vedolizumab (VDZ) inhibits α4β7 integrins and is used to target intestinal immune responses in patients with inflammatory bowel disease, which is considered to be relatively safe. Here we report on a fatal complication following VDZ administration. A 64-year-old female patient with ulcerative colitis (UC) refractory to tumor necrosis factor inhibitors was treated with VDZ. One week after the second VDZ infusion, she was admitted to hospital with severe diarrhea and systemic inflammatory response syndrome (SIRS)...
June 27, 2017: Zeitschrift Für Gastroenterologie
https://www.readbyqxmd.com/read/28649561/psd1-effects-on-candida-albicans-planktonic-cells-and-biofilms
#11
Sónia Gonçalves, Patrícia M Silva, Mário R Felício, Luciano N de Medeiros, Eleonora Kurtenbach, Nuno C Santos
Candida albicans is an important human pathogen, causing opportunistic infections. The adhesion of planktonic cells to a substrate is the first step for biofilm development. The antimicrobial peptide (AMP) Psd1 is a defensin isolated from Pisum sativum seeds. We tested the effects of this AMP on C. albicans biofilms and planktonic cells, comparing its activity with amphotericin B and fluconazole. Three C. albicans variants were studied, one of them a mutant deficient in glucosylceramide synthase, conferring resistance to Psd1 antifungal action...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28634478/transcriptional-and-antagonistic-responses-of-biocontrol-strain-lysobacter-enzymogenes-oh11-to-the-plant-pathogenic-oomycete-pythium-aphanidermatum
#12
Yangyang Zhao, Guoliang Qian, Yuan Chen, Liangcheng Du, Fengquan Liu
Lysobacter enzymogenes is a ubiquitous, beneficial, plant-associated bacterium emerging as a novel biological control agent. It has the potential to become a new source of antimicrobial secondary metabolites such as the Heat-Stable Antifungal Factor (HSAF), which is a broad-spectrum antimycotic with a novel mode of action. However, very little information about how L. enzymogenes detects and responds to fungi or oomycetes has been reported. An in vitro confrontation bioassay between the pathogenic oomycete Pythium aphanidermatum and the biocontrol bacterial strain L...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28596945/treatment-with-pcramoll-alone-and-in-combination-with-fluconazole-provides-therapeutic-benefits-in-c-gattii-infected-mice
#13
Jannyson J Jandú, Marliete C Costa, Julliana R A Santos, Fernanda M Andrade, Thais F Magalhães, Márcia V Silva, Maria C A B Castro, Luanna C B B Coelho, Aline G Gomes, Tatiane A Paixão, Daniel A Santos, Maria T S Correia
Cryptococcus gattii is one of the main causative agents of cryptococcosis in immunocompetent individuals. Treatment of the infection is based on the use of antimycotics, however, the toxicity of these drugs and the increase of drug-resistant strains have driven the search for more effective and less toxic therapies for cryptococcosis. pCramoll are isolectins purified from seeds of Cratylia mollis, a native forage plant from Brazil, which has become a versatile tool for biomedical application. We evaluated the effect of pCramoll alone and in combination with fluconazole for the treatment of mice infected with C...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28594372/purine-acquisition-and-synthesis-by-human-fungal-pathogens
#14
REVIEW
Jessica L Chitty, James A Fraser
While members of the Kingdom Fungi are found across many of the world's most hostile environments, only a limited number of species can thrive within the human host. The causative agents of the most common invasive fungal infections are Candida albicans, Aspergillus fumigatus, and Cryptococcus neoformans. During the infection process, these fungi must not only combat the host immune system while adapting to dramatic changes in temperature and pH, but also acquire sufficient nutrients to enable growth and dissemination in the host...
June 8, 2017: Microorganisms
https://www.readbyqxmd.com/read/28579821/opioid-analgesics-related-pharmacokinetic-drug-interactions-from-the-perspectives-of-evidence-based-on-randomized-controlled-trials-and-clinical-risk-management
#15
REVIEW
Xiu-Qin Feng, Ling-Ling Zhu, Quan Zhou
BACKGROUND: Multimorbidity results in complex polypharmacy which may bear a risk of drug interactions. A better understanding of opioid analgesics combination therapy used for pain management could help warrant medication safety, efficacy, and economic relevance. Until now there has been no review summarizing the opioid analgesics-related pharmacokinetic drug interactions from the perspective of evidence based on randomized controlled trials (RCTs). METHOD: A literature search was performed using PubMed, MEDLINE, and the Cochrane Library, using a PRISMA flowchart...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28572725/synthesis-characterization-and-in-vitro-activity-against-candida-spp-of-fluconazole-encapsulated-on-cationic-and-conventional-nanoparticles-of-poly-lactic-co-glycolic-acid
#16
Nicolás Gómez-Sequeda, Rodrigo Torres, Claudia Ortiz
In this study, nanoparticles (NPs) of poly(lactic-co-glycolic acid) (PLGA) loaded with fluconazole (FLZ) and FLZ-NPs coated with the cationic polymer polyethylenimine (PEI) (FLZ-NP-PEI) were synthetized in order to improve antimycotic activity against four strains of Candida spp. of clinical relevance. FLZ-NPs and FLZ-NP-PEI were synthesized by double emulsion solvent-diffusion (DES-D) and characterized. Minimum inhibitory concentration (MIC50) and minimum fungicide concentration (MFC) were determined in vitro by culturing Candida strains in the presence of these nanocompounds...
2017: Nanotechnology, Science and Applications
https://www.readbyqxmd.com/read/28567508/-psoriasis-capitis-and-seborrhoic-eczema-of-scalp-diseases
#17
REVIEW
M Sticherling
The scalp may be affected by various diseases with equally varying manifestations. Erythema and scaling is often accompanied by agonizing itch. Scalp psoriasis and seborrheic eczema represent the most frequent diseases, which can be differentiated into classical cases; however, overlap and similarities are seen. Sharply demarcated erythematosquamous plaques across the natural hairline in psoriasis are opposed to blurred dark-red erythema and yellowish, greasy scales in seborrheic eczema. Whereas with the latter diffuse alopecia may frequently be found, hair loss is rarely seen in psoriasis and may also be related to therapeutic agents...
June 2017: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
https://www.readbyqxmd.com/read/28527355/antimycotic-activity-of-fengycin-c-biosurfactant-and-its-interaction-with-phosphatidylcholine-model-membranes
#18
Lina María González-Jaramillo, Francisco José Aranda, José Antonio Teruel, Valeska Villegas-Escobar, Antonio Ortiz
Lipopeptide biosurfactants constitute one of the most promising groups of compounds for the treatment and prevention of fungal diseases in plants. Bacillus subtilis strain EA-CB0015 produces iturin A, fengycin C and surfactin and it has been proven useful for the treatment of black Sigatoka disease in banana plants, an important pathology caused by the fungus Mycosphaerella fijiensis (Morelet). We have found that B. subtilis EA-CB0015 cell free supernatants and purified fractions inhibit M. fijiensis cellular growth...
May 10, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28504240/maldi-tof-ms-in-the-microbiology-laboratory-current-trends
#19
Sören Schubert, Markus Kostrzewa
Within less than a decade matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) has become a gold standard for microbial identification in clinical microbiology laboratories. Besides identification of microorganisms the typing of single strains as well as the antibiotic and antimycotic resistance testing has come into focus in order to speed up the microbiological diagnostic. However, the full potential of MALDI-TOF MS has not been tapped yet and future technological advancements will certainly expedite this method towards novel applications and enhancement of current practice...
May 15, 2017: Current Issues in Molecular Biology
https://www.readbyqxmd.com/read/28473992/hepatotoxicity-of-antimycotics-used-for-invasive-fungal-infections-in-vitro-results
#20
Sandra Doß, Heike Potschka, Fanny Doß, Steffen Mitzner, Martin Sauer
Purpose. Drug-induced liver injury (DILI) is the most common cause of liver injury and a serious clinical problem; antimycotics are involved in approximately 3% of all DILI cases. The hepatotoxicity of many drugs, including the antimycotics, is poorly screened in human models. Methods. In a standardized assay the cytotoxicity on hepatocytes of different concentrations (Cmax, 5x Cmax, and 10x Cmax) of the antimycotics used for systemic infections was tested. Anidulafungin (ANI), liposomal amphotericerin B (L-AmB), caspofungin (CASPO), fluconazole (FLUCO), and voriconazole (VORI) were incubated with HepG2/C3A cells...
2017: BioMed Research International
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