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https://www.readbyqxmd.com/read/28938214/dermal-transfer-and-environmental-release-of-ceo2-nanoparticles-used-as-uv-inhibitors-on-outdoor-surfaces-implications-for-human-and-environmental-health
#1
Justin G Clar, William E Platten, Eric J Baumann, Andrew Remsen, Steve M Harmon, Christina L Bennett-Stamper, Treye A Thomas, Todd P Luxton
A major area of growth for "nano-enabled" consumer products have been surface coatings, including paints stains and sealants. Ceria (CeO2) nanoparticles (NPs) are of interest as they have been used as additives in these these products to increase UV resistance. Currently, there is a lack of detailed information on the potential release, and speciation (i.e., ion vs. particle) of CeO2 NPs used in consumer-available surface coatings during intended use scenarios. In this study, both Micronized-Copper Azole pressure-treated lumber (MCA), and a commercially available composite decking were coated with CeO2 NPs dispersed in Milli-Q water or wood stain...
September 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28929696/-clinical-analysis-of-cervus-and-cucumis-polypeptide-injection-based-on-real-world-hospital-information-system
#2
Shuai-Ling Sun, Yan-Ming Xie, Yuan-Yuan Li, Yin Zhang, Dan-Hui Yi, Yan Zhuang
To analyze the clinical application of Cervus and Cucumis Polypeptide injection in the real world, in order to define the characteristics of clinical drug use and correlation, and provide reference for risk management and further study for Cervus and Cucumis Polypeptide injection. Descriptive analysis and association rules analysis were performed on 37 721 cases using Cervus and Cucumis Polypeptide injection in 26 hospitals nationwide. Cervus and Cucumis Polypeptide injection were mostly adopted by patients aged between 45 and 64(39...
November 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28929591/cobalt-catalyzed-cross-dehydrogenative-c-sp2-c-sp3-coupling-of-oxazole-thiazole-with-ether-or-cycloalkane
#3
Xiaojiao Wang, Bowen Lei, Lifang Ma, Lisi Zhu, Xinyue Zhang, Hao Zuo, Dailin Zhuang, Ziyuan Li
Direct C5-alkylation of oxazole/thiazole with ether or cycloalkane has been achieved through a cobalt-catalyzed cross-dehydrogenative couling (CDC) process in moderate to good yields. This transformation represents the first C(sp2)-C(sp3) cross-coupling at the C5-position of azole via double C-H bond cleavages. Various functional groups on oxazole/thiazole substrates, as well as water and air, are well-tolerated with this concise and practical protocol, constituting straightforward access to heterocycles with great medicinal significance...
September 19, 2017: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/28927230/multi-azole-resistant-strains-of-cryptococcus-neoformans-var-grubii-isolated-from-a-flz-resistant-strain-by-culturing-in-medium-containing-voriconazole
#4
Rui Kano, Miki Okubo, Atsuhiko Hasegawa, Hiroshi Kamata
A Cryptococcus neoformans var. grubii strain, NUBS14020, was the first fluconazole (FLZ)-resistant strain isolated from a feline cryptococcosis. Subsequent work demonstrated that multi-azole-resistant strains are readily isolated from FLZ-resistant strains by culturing in medium containing voriconazole (VRZ). The resulting clones were assessed for mutation and expression of known target genes, including the loci encoding lanosterol 14-α demethylase (ERG11), an ATP-binding cassette (ABC) transporter (AFR1), or a multidrug efflux pump (MEP); mutation and/or overexpression of these genes is known to be associated with azole resistance...
September 11, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28923874/agar-based-screening-for-azole-resistance-in-aspergillus-fumigatus-using-vipcheck%C3%A2-a-single-centre-evaluation
#5
J B Buil, H A L van der Lee, A J M M Rijs, J Zoll, J A M F Hovestadt, W J G Melchers, P E Verweij
Introduction Antifungal susceptibility testing is an essential tool for guiding therapy, although EUCAST and CLSI reference methods are often only available in specialized centres. We studied the performance of an agar-based screening method for the detection of azole resistance in Aspergillus fumigatus cultures.Methods The VIPcheck™ consists of four wells containing voriconazole, itraconazole, posaconazole or a growth control. Ninety-six A. fumigatus isolates were used. Thirty-three isolates harboured a known resistance mechanism: TR34/L98H (11 isolates); TR46/Y121F/T289A (6 isolates); TR53 (2 isolates) and fourteen isolates with other cyp51A-gene point mutations...
September 18, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28923871/emergence-of-echinocandin-resistance-due-to-a-point-mutation-in-the-fks1-gene-of-aspergillus-fumigatus-in-a-patient-with-chronic-pulmonary-aspergillosis
#6
Cristina Jiménez-Ortigosa, Caroline Moore, David W Denning, David S Perlin
We have identified the first case of a fks1 hot spot 1 point mutation causing echinocandin resistance in a clinical Aspergillus fumigatus isolate recovered from a chronic pulmonary aspergillosis patient with an aspergilloma who first failed azole and polyene therapy, and then subsequently failed micafungin treatment.
September 18, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28923863/synergistic-effects-of-tacrolimus-and-azoles-against-exophiala-dermatitidis
#7
Lujuan Gao, Yi Sun, Chengyan He, Tongxiang Zeng, Ming Li
In vitro interactions of tacrolimus, a calcineurin inhibitor, and azoles including itraconazole, voriconazole, and posaconazole against planktonic cells and biofilms of Exophiala dermatitidis were assessed via broth microdilution checkerboard technique. A total of 16 clinical isolates were studied. The results revealed favorable synergistic inhibitory activity between tacrolimus and itraconazole, voriconazole, or posaconazole against planktonic cells of E. dermatitidis However, limited synergism was observed against biofilms of E...
September 18, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28922488/isolation-of-rhodotorula-mucilaginosa-from-blood-cultures-in-a-tertiary-care-hospital
#8
Iker Falces-Romero, Emilio Cendejas-Bueno, María Pilar Romero-Gómez, Julio García-Rodríguez
BACKGROUND: Rhodotorula species have traditionally been considered as one of common non-virulent environmental inhabitant. They have emerged as an opportunistic pathogen, particularly in immunocompromised hosts and most infections have been associated with intravenous catheters in these patients. OBJECTIVE: We review the isolates in blood cultures of Rhodotorula mucilaginosa in our Hospital. We describe the demographic and clinical features of the cases and the antifungal susceptibility profiles of the isolates...
September 18, 2017: Mycoses
https://www.readbyqxmd.com/read/28922487/pcr-based-detection-of-a-fumigatus-and-absence-of-azole-resistance-due-to-tr34-l98h-in-a-french-multicenter-cohort-of-137-patients-with-fungal-rhinosinusitis
#9
Florent Morio, Eric Dannaoui, Taieb Chouaki, Estelle Cateau, Olivier Malard, Pierre Bonfils, Cyril Page, Xavier Dufour, Claire Cottrel, Tamic Erwan, Rose-Anne Lavergne, Patrice Le Pape
BACKGROUND: Fungal rhinosinusitis has a worldwide distribution, comprises distinct clinical entities but is mostly due to Aspergillus among which A. fumigatus plays a major role in European countries. Although, there is accumulating evidence for the emergence of environmentally acquired-azole resistance in A. fumigatus (such as TR34 /L98H) in various clinical settings, there is few data for patients with fungal rhinosinusitis. OBJECTIVES: To investigate the prevalence of A...
September 18, 2017: Mycoses
https://www.readbyqxmd.com/read/28921992/a-mechanistic-understanding-of-the-synergistic-potential-of-azole-fungicides-in-the-aquatic-invertebrate-gammarus-pulex
#10
Andrea Rösch, Michele Gottardi, Caroline Vignet, Nina Cedergreen, Juliane Hollender
Azole fungicides are known inhibitors of the important enzyme class cytochrome P450 monooxygenases (CYPs), thereby influencing the detoxification of co-occurring substances via biotransformation. This synergism in mixtures containing an azole has mostly been studied by effect measurements, while the underlying mechanism has been less well investigated. In this study, six azole fungicides (cyproconazole, epoxiconazole, ketoconazole, prochloraz, propiconazole and tebuconazole) were selected to investigate their synergistic potential and their CYP inhibition strength in the aquatic invertebrate Gammarus pulex...
September 18, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28920087/simultaneous-removal-of-five-triazole-fungicides-from-synthetic-solutions-on-activated-carbons-and-cyclodextrin-based-adsorbents
#11
Grégorio Crini, Adeline Exposito Saintemarie, Steffi Rocchi, Marc Fourmentin, Audrey Jeanvoine, Laurence Millon, Nadia Morin-Crini
In this study, an adsorption-oriented process for the removal of fungicides from polycontaminated aqueous solutions was applied. To remove triazole fungicides from aqueous mixtures of propiconazole (PROPI), tebuconazole (TEBU), epoxiconazole (EPOXI), bromuconazole (BROMU) and difenoconazole (DIFENO), several materials used as adsorbents were compared using batch experiments, namely two conventional activated carbons (ACs) and five nonconventional cross-linked cyclodextrin (CD)-based materials (α-CDP, β-CDP, γ-CDP, αβγ-CDP mixture, and hydroxypropyl-β-CDP)...
August 2017: Heliyon
https://www.readbyqxmd.com/read/28919789/antifungal-resistance-current-trends-and-future-strategies-to-combat
#12
REVIEW
Nathan P Wiederhold
Antifungal resistance represents a major clinical challenge to clinicians responsible for treating invasive fungal infections due to the limited arsenal of systemically available antifungal agents. In addition current drugs may be limited by drug-drug interactions and serious adverse effects/toxicities that prevent their prolonged use or dosage escalation. Fluconazole resistance is of particular concern in non-Candida albicans species due to the increased incidence of infections caused by these species in different geographic locations worldwide and the elevated prevalence of resistance to this commonly used azole in many institutions...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28919715/in-vitro-inhibitory-activities-of-magnolol-against-candida-spp
#13
Peiru Zhou, Jingya Fu, Hong Hua, Xiaosong Liu
Candida spp. cause various infections involving the skin, mucosa, deep tissues, and even life-threatening candidemia. They are regarded as an important pathogen of nosocomial bloodstream infection, with a high mortality rate. As a result of prolonged exposure to azoles, the therapeutic failure associated with azoles resistance has become a serious challenge in clinical situations. Therefore, novel, alternative antifungals are required urgently. In the present study, the CLSI M-27A broth microdilution method and the 2,3-Bis-(2-methoxy-4-nitro-5-sulfophenyl)-2H-tetrazolium-5-carboxanilide (XTT) reduction assay were used to evaluate the antifungal effects of magnolol against various standard Candida strains in planktonic mode and biofilm formation, respectively...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28919150/in-vitro-anti-tuberculosis-activity-of-azole-drugs-against-mycobacterium-tuberculosis-clinical-isolates
#14
Belén R Imperiale, Ángel A Cataldi, Nora S Morcillo
BACKGROUND: Latent tuberculosis has been associated with the persistence of dormant Mycobacterium tuberculosis in the organism of infected individuals, who are reservoirs of the bacilli and the source for spreading the disease in the community. New active anti-TB drugs exerting their metabolic action at different stages and on latent/dormant bacilli are urgently required to avoid endogenous reactivations and to be part of treatments of multi- and extensively-drug resistant tuberculosis (M/XDR-TB)...
September 14, 2017: Revista Argentina de Microbiología
https://www.readbyqxmd.com/read/28913896/a-novel-non-azole-topical-treatment-reduces-malassezia-numbers-and-associated-dermatitis-a-short-term-prospective-randomized-blinded-and-placebocontrolled-trial-in-naturally-infected-dogs
#15
Ylva Sjöström, Paul Mellor, Kerstin Bergvall
BACKGROUND: Malassezia yeast overgrowth on the skin is a common and often recurrent cause of dermatitis in dogs; it can be an exacerbating factor of atopic dermatitis. Anti-fungal drugs have been a standard treatment, but there is some concern that resistance may be evolving in a spectrum of Malassezia species. Safe, efficient and easy-to-use alternatives are needed. OBJECTIVES: To assess if a commercially available topical non-azole solution applied to paws affected by Malassezia-associated dermatitis (MAD), could ameliorate Malassezia numbers and associated signs over a short term (14 day) trial...
September 14, 2017: Veterinary Dermatology
https://www.readbyqxmd.com/read/28911045/azole-resistant-aspergillosis-epidemiology-molecular-mechanisms-and-treatment
#16
REVIEW
Anuradha Chowdhary, Cheshta Sharma, Jacques F Meis
Aspergillus fumigatus remains the most common species in all pulmonary syndromes, followed by Aspergillus flavus which is a common cause of allergic rhinosinusitis, postoperative aspergillosis and fungal keratitis. The manifestations of Aspergillus infections include invasive aspergillosis, chronic pulmonary aspergillosis and bronchitis. Allergic manifestations of inhaled Aspergillus include allergic bronchopulmonary aspergillosis and severe asthma with fungal sensitization. Triazoles are the mainstay of therapy against Aspergillus infections for treatment and prophylaxis...
August 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28911043/multidrug-resistant-candida-epidemiology-molecular-mechanisms-and-treatment
#17
REVIEW
Maiken Cavling Arendrup, Thomas F Patterson
Invasive Candida infections remain an important cause of morbidity and mortality, especially in hospitalized and immunocompromised or critically ill patients. A limited number of antifungal agents from only a few drug classes are available to treat patients with these serious infections. Resistance can be either intrinsic or acquired. Resistance mechanisms are not exchanged between Candida; thus, acquired resistance either emerges in response to an antifungal selection pressure in the individual patient or, more rarely, occur due to horizontal transmission of resistant strains between patients...
August 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28911041/culture-independent-molecular-methods-for-detection-of-antifungal-resistance-mechanisms-and-fungal-identification
#18
David S Perlin, Nathan P Wiederhold
Resistance to azoles and echinocandins has emerged as a significant factor affecting the clinical management of patients with invasive fungal infections. Immunosuppressed patients at high risk for invasive fungal infections often have prolonged or repeated exposure to antifungals resulting in either the well-documented selection of naturally occurring, less susceptible fungal species, or the in situ development of specific resistance mechanisms. Nucleic acid-based molecular diagnostics are particularly well suited for the rapid detection of low-abundance fungal pathogens and identification of the infecting pathogen to the genus and species levels, as well as assessment of resistance mechanisms...
August 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28903985/molecular-tools-for-the-detection-and-deduction-of-azole-antifungal-drug-resistance-phenotypes-in-aspergillus-species
#19
REVIEW
Anna Dudakova, Birgit Spiess, Marut Tangwattanachuleeporn, Christoph Sasse, Dieter Buchheidt, Michael Weig, Uwe Groß, Oliver Bader
The incidence of azole resistance in Aspergillus species has increased over the past years, most importantly for Aspergillus fumigatus. This is partially attributable to the global spread of only a few resistance alleles through the environment. Secondary resistance is a significant clinical concern, as invasive aspergillosis with drug-susceptible strains is already difficult to treat, and exclusion of azole-based antifungals from prophylaxis or first-line treatment of invasive aspergillosis in high-risk patients would dramatically limit drug choices, thus increasing mortality rates for immunocompromised patients...
October 2017: Clinical Microbiology Reviews
https://www.readbyqxmd.com/read/28901803/in-vitro-activity-of-calcium-channel-blockers-in-combination-with-conventional-antifungal-agents-against-clinically-important-filamentous-fungi
#20
Mónika Homa, Kinga Hegedűs, Ádám Fülöp, Vanessza Wolfárt, Shine Kadaikunnan, Jamal M Khaled, Naiyf S Alharbi, Csaba Vágvölgyi, László Galgóczy
Despite the current therapeutic options, filamentous fungal infections are associated with high mortality rate especially in immunocompromised patients. In order to find a new potential therapeutic approach, the in vitro inhibitory effect of two antiarrhythmic agents, diltiazem and verapamil hydrochloride were tested against different clinical isolates of ascomycetous and mucoralean filamentous fungi. The in vitro combinations of these non-antifungal drugs with azole and polyene antifungal agents were also examined...
September 2017: Acta Biologica Hungarica
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