Antifungal activities of R-135853, a sordarin derivative, in experimental candidiasis in mice

The activities ofR-135853, a novel sordarin derivative that possesses a 1,4-oxazepane ring moiety, were evaluated in vitro and in vivo.R-135853 exhibited potent in vitro activities against Candida albicans (fluconazole-susceptible strains), Candida glabrata, Candida tropicalis, and Cryptococcus neoformans, with MICs at which 90% of isolates were inhibited of 0.03, 1, 0.5, and 0.5 microg/ml, respectively.
Source: The Aspergillus Website - updates - Category: Respiratory Medicine Authors: Source Type: news

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In this study, we used the fungus Aspergillus orayzae for the fermentation process. The aqueous extract of fermented Lupin (AEFL) possesses the ability to reduce selenium ion in the presence of gamma rays evidenced by the color changes to red. Elemental composition, surface morphology, size determenation, and identity of selenium nanoparticles (SeNPs) were verified by UV–Vis., TEM, DLS, XRD, EDX, SEM and FT-IR. Antimicrobial activity of SeNPs was tested towards multidrug-resistant (MDR) bacteria, and some pathogenic fungi. TEM with DLS analysis confirmed the formation of sphere isotropic, poly-dispersed SeNPs with av...
Source: Microbial Pathogenesis - Category: Infectious Diseases Source Type: research
Abstract Rhizopus oryzae is the most prevalent causative agent of Mucormycosis, an increasingly reported opportunistic fungal infection. These mucormycetes are intrinsically resistant to Candida- and Aspergillus-active antifungal azole drugs such as fluconazole and voriconazole, respectively. Despite of its importance, the molecular mechanisms of its intrinsic azole resistance have not been elucidated yet. The aim of this work is to establish if the Rhizopus oryzae CYP51 genes are the unique responsible for voriconazole and fluconazole intrinsic resistance in these fungal pathogens. Two CYP51 genes were identified...
Source: Antimicrobial Agents and Chemotherapy - Category: Microbiology Authors: Tags: Antimicrob Agents Chemother Source Type: research
Authors: Huang W, Chang J, Wang P, Liu C, Yin Q, Zhu Q, Lu F, Gao T Abstract Aflatoxin B1 (AFB1) and zearalenone (ZEA) are the secondary toxic metabolites of fungi which contaminate a wide range of food and feedstuffs. Limiting exposure of humans and livestock to them is very essential. Among numerous methods of mycotoxin-degradation, biodegradation by microorganisms and enzymes is an effective and promising approach to eliminate their hazards. The present study aims to optimize the proportion of different species of beneficial microbes by means of response surface methodology (RSM) and its combination with mycotox...
Source: Journal of Toxicological Sciences - Category: Toxicology Tags: J Toxicol Sci Source Type: research
Abstract Two new furandione derivatives, designated as asperfurandiones A (1) and B (2), were isolated from the solid culture of the marine-derived fungus Aspergillus versicolor. Their structures were elucidated using a combination of mass spectrometry and NMR spectroscopy. Additionally, asperfurandiones A and B both showed moderate antifungal activity against Gaeumannomyces graminis, Cryptococcus neoformans, and Candida albicans with MIC values of 64 μg/mL. PMID: 29806501 [PubMed - as supplied by publisher]
Source: Natural Product Research - Category: Biochemistry Authors: Tags: Nat Prod Res Source Type: research
Conclusion The results of this work demonstrated the differential antimicrobial activities of MESf and its alkaloid isolate, canthin-6-one with antibacterial and antifungal activities, respectively. The present study support the popular use of Simaba ferruginea in combatting afflictions related to bacterial infections, and demonstrate that canthin-6-one as a promising antifungal agent. Both MESf and canthin-6-one are considered non-toxic based on the in vitro toxicological study. Graphical abstract
Source: Journal of Ethnopharmacology - Category: Drugs & Pharmacology Source Type: research
Publication date: 15 August 2018 Source:Journal of Molecular Liquids, Volume 264 Author(s): Nadjet Rezki, Salsabeel A. Al-Sodies, Mouslim Messali, Sanaa K. Bardaweel, Pramod K. Sahu, Fawzia F. Al-blewi, Praveen K. Sahu, Mohamed R. Aouad The discovery of a novel series of task-specific fluorinated pyridinium ionic liquids (TsILs) tagged with Schiff bases is reported using ultrasound-assisted and conventional syntheses. The synthesis required the quaternization of the appropriate pyridine Schiff base, followed by the metathesis of the resulting task-specific halogenated pyridinium ILs. The structures of the ILs were establi...
Source: Journal of Molecular Liquids - Category: Molecular Biology Source Type: research
g; T Abstract Endophthalmitis is a severe intraocular infection with potentially devastating consequences, such as becoming blind or loss of an eyeball. It can be exogenous (postoperative or posttraumatic) or endogenous. The most frequent causes of postoperative endophthalmitis are cataract surgery and intravitreal injections. Typical symptoms are pain and loss of visual acuity. Hypopyon and infiltration of the vitreous body with the loss of the red reflex are the most important clinical findings for endophthalmitis. The diagnosis is primarily clinical and supported by microbiological cultures and PCR from th...
Source: Der Ophthalmologe - Category: Opthalmology Authors: Tags: Ophthalmologe Source Type: research
ConclusionAlthough the number of fungal species causing CNS mycosis is increasing, only some possess well-defined treatment standards (e.g., cryptococcal meningitis and CNS aspergillosis). The early diagnosis of fungal infection, accompanied by identification of the etiological factor, is needed to allow the selection of effective therapy in patients with FIs-CNS and limit their high mortality.
Source: Infection - Category: Infectious Diseases Source Type: research
Abstract Invasive fungal infections cause approximately 1.5 million deaths per year worldwide and are a growing threat to human health. Current anti-fungal therapies are often insufficient, therefore studies into host-pathogen interactions are critical for the development of novel therapies to improve mortality rates. Myeloid cells, such as macrophages and dendritic cells, express pattern recognition receptor (PRRs), which are important for fungal recognition. Engagement of these PRRs by fungal pathogens induces multiple cytokines, which in turn activate T effector responses. Interleukin (IL)-12 family members (IL...
Source: Cytokine - Category: Molecular Biology Authors: Tags: Cytokine Source Type: research
In this study, moxifloxacin was used to label fungal cells for TPM imaging of fungal keratitis models. Fungal cell suspensions and ex vivo fungal keratitis-affected rabbit corneas were prepared using two types of fungal pathogens, Aspergillus fumigatus and Candida albicans, and TPM imaging was performed both with and without moxifloxacin treatment. Fungal cells with enhanced fluorescence were clearly visible by TPM of moxifloxacin-treated fungal cell suspensions. TPM of moxifloxacin-treated fungal keratitis rabbit corneas revealed both the infecting fungal cells and corneal cells similar to those observed in TPM without mo...
Source: Experimental Eye Research - Category: Opthalmology Authors: Tags: Exp Eye Res Source Type: research
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