scholarly journals In vitro antifungal activity of miltefosine and levamisole: their impact on ergosterol biosynthesis and cell permeability of dimorphic fungi

2015 ◽  
Vol 119 (4) ◽  
pp. 962-969 ◽  
Author(s):  
R.S.N. Brilhante ◽  
E.P. Caetano ◽  
R.A.C. Lima ◽  
D.S.C.M. Castelo Branco ◽  
R. Serpa ◽  
...  
Keyword(s):  
Antifungal Activity ◽  
Cell Permeability ◽  
Ergosterol Biosynthesis ◽  
Dimorphic Fungi ◽  
In Vitro Antifungal Activity

scholarly journals Effect of Farnesol on Growth, Ergosterol Biosynthesis, and Cell Permeability in Coccidioides posadasii

2013 ◽  
Vol 57 (5) ◽  
pp. 2167-2170 ◽  
Author(s):  
Raimunda Sâmia Nogueira Brilhante ◽  
Rita Amanda Chaves de Lima ◽  
Erica Pacheco Caetano ◽  
João Jaime Giffoni Leite ◽  
Débora de Souza Collares Maia Castelo-Branco ◽  
...  
Keyword(s):  
Antifungal Activity ◽  
Osmotic Stress ◽  
New Drugs ◽  
Host Cells ◽  
Cell Permeability ◽  
Ergosterol Biosynthesis ◽  
Coccidioides Posadasii ◽  
Content Type ◽  
Subinhibitory Concentrations

ABSTRACTCoccidioidomycosis is a systemic mycosis caused by the dimorphic fungiCoccidioidesspp. The treatment for chronic and/or disseminated coccidioidomycosis can be prolonged and complicated. Therefore, the search for new drugs is necessary. Farnesol is a precursor in the sterol biosynthesis pathway that has been shown to present antifungal activity. Thus, the objective of this study was to evaluate thein vitroantifungal activity of farnesol alone and in combination with antifungal agents against clinical and environmental strains ofCoccidioides posadasiias well as to determine their effect on the synthesis of ergosterol and on cell permeability. This study employed the broth macrodilution method to determine the MIC of farnesol against 18 strains ofC. posadasii. Quantification of ergosterol was performed with 10 strains ofC. posadasiiafter exposure to subinhibitory concentrations of farnesol. Finally, the activity of farnesol was evaluated in the presence of osmotic stress, induced by the addition of NaCl to the culture medium, during the susceptibility tests. The results showed that farnesol exhibited low MICs (ranging from 0.00171 to 0.01369 mg/liter) against all tested strains. The combination of farnesol with the antifungals showed synergistic effects (fractional inhibitory concentration index [FICI] ≤ 0.5). As for the ergosterol quantification, it was observed that exposure to subinhibitory concentrations of farnesol decreased the amount of ergosterol extracted from the fungal cells. Furthermore, farnesol also showed lower MIC values when the strains were subjected to osmotic stress, indicating the action of this compound on the fungal membrane. Thus, due to the highin vitroantifungal activity, this work brings perspectives for the performance ofin vivostudies to further elucidate the effects of farnesol on the host cells.

In vitro Antifungal Activity of a 29-kDa Glycoprotein Purified from the Galls of Quercus infectoria

2005 ◽  
Vol 40 (1-2) ◽  
pp. 43-54 ◽  
Author(s):  
K. Yamunarani ◽  
R. Jaganathan ◽  
R. Bhaskaran ◽  
P. Govindaraju ◽  
R. Velazhahan
Keyword(s):  
Antifungal Activity ◽  
Quercus Infectoria ◽  
In Vitro Antifungal Activity

Formulation and Evaluation of Carbopol Gel Containing Liposomes of Ketoconazole. (Part-II)

2009 ◽  
Vol 1 (2) ◽  
Author(s):  
Rakesh Patel ◽  
Hardik Patel ◽  
Ashok Baria
Keyword(s):  
Antifungal Activity ◽  
Rat Skin ◽  
Albino Rat ◽  
In Vitro Drug Release ◽  
Carbopol Gel ◽  
Liposomal Formulations ◽  
Release Drug ◽  
In Vitro Permeation ◽  
In Vitro Antifungal Activity

The aim of this work was to prepare and evaluate the topical carbopol gel formulation containing ketoconazole encapsulated liposomes. Ketoconazole loaded liposomes were prepared by thin film hydration technique. The prepared liposomes were incorporated into 1% carbopol gel, and the systems were evaluated for in-vitro drug release, drug retention into skin and in-vitro antifungal activity. The in-vitro permeation of ketoconazole using wistar albino rat skin from liposomal gel was compared with that of plain drug gel and also with plain drug cream containing 2% w/w of ketoconazole. The release of ketoconazole from liposomal gel was much slower than from non liposomal formulations. Gel containing liposomal ketoconazole showed maximum antifungal activity after 30 hours over plain ketoconazole gel and cream formulations.

scholarly journals Orodispersible Film Loaded with Enterococcus faecium CRL183 Presents Anti-Candida albicans Biofilm Activity In Vitro

Pharmaceutics ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 998
Author(s):  
Virgínia Barreto Lordello ◽  
Andréia Bagliotti Meneguin ◽  
Sarah Raquel de Annunzio ◽  
Maria Pía Taranto ◽  
Marlus Chorilli ◽  
...  
Keyword(s):  
Candida Albicans ◽  
Antifungal Activity ◽  
Enterococcus Faecium ◽  
Potato Starch ◽  
Oral Candidiasis ◽  
Candida Spp ◽  
Sem Images ◽  
Control Film ◽  
In Vitro Antifungal Activity

Background: Probiotic bacteria have been emerging as a trustworthy choice for the prevention and treatment of Candida spp. infections. This study aimed to develop and characterize an orodispersible film (ODF) for delivering the potentially probiotic Enterococcus faecium CRL 183 into the oral cavity, evaluating its in vitro antifungal activity against Candida albicans. Methods and Results: The ODF was composed by carboxymethylcellulose, gelatin, and potato starch, and its physical, chemical, and mechanical properties were studied. The probiotic resistance and viability during processing and storage were evaluated as well as its in vitro antifungal activity against C. albicans. The ODFs were thin, resistant, and flexible, with neutral pH and microbiologically safe. The probiotic resisted the ODF obtaining process, demonstrating high viability (>9 log10 CFU·g−1), up to 90 days of storage at room temperature. The Probiotic Film promoted 68.9% of reduction in fungal early biofilm and 91.2% in its mature biofilm compared to the group stimulated with the control film. Those results were confirmed through SEM images. Conclusion: The probiotic ODF developed is a promising strategy to prevent oral candidiasis, since it permits the local probiotic delivery, which in turn was able to reduce C. albicans biofilm formation.

scholarly journals Rhizosphere-enriched microbes as a pool to design synthetic communities for reproducible beneficial outputs

2019 ◽  
Author(s):  
Maria-Dimitra Tsolakidou ◽  
Ioannis A Stringlis ◽  
Natalia Fanega-Sleziak ◽  
Stella Papageorgiou ◽  
Antria Tsalakou ◽  
...  
Keyword(s):  
Antifungal Activity ◽  
Fungal Pathogens ◽  
Growth Parameters ◽  
Tomato Plants ◽  
Beneficial Effects ◽  
Negative Effect ◽  
Tomato Growth ◽  
In Vitro Antifungal Activity

Abstract Composts represent a sustainable way to suppress diseases and improve plant growth. Identification of compost-derived microbial communities enriched in the rhizosphere of plants and characterization of their traits, could facilitate the design of microbial synthetic communities (SynComs) that upon soil inoculation could yield consistent beneficial effects towards plants. Here, we characterized a collection of compost-derived bacteria, previously isolated from tomato rhizosphere, for in vitro antifungal activity against soil-borne fungal pathogens and for their potential to change growth parameters in Arabidopsis. We further assessed root-competitive traits in the dominant rhizospheric genus Bacillus. Certain isolated rhizobacteria displayed antifungal activity against the tested pathogens and affected growth of Arabidopsis, and Bacilli members possessed several enzymatic activities. Subsequently, we designed two SynComs with different composition and tested their effect on Arabidopsis and tomato growth and health. SynCom1, consisting of different bacterial genera, displayed negative effect on Arabidopsis in vitro, but promoted tomato growth in pots. SynCom2, consisting of Bacilli, didn't affect Arabidopsis growth, enhanced tomato growth and suppressed Fusarium wilt symptoms. Overall, we found selection of compost-derived microbes with beneficial properties in the rhizosphere of tomato plants, and observed that application of SynComs on poor substrates can yield reproducible plant phenotypes.

scholarly journals In Vitro Antifungal Activity of Sanguinarine and Chelerythrine Derivatives against Phytopathogenic Fungi

Molecules ◽  
2012 ◽  
Vol 17 (11) ◽  
pp. 13026-13035 ◽  
Author(s):  
Xin-Juan Yang ◽  
Fang Miao ◽  
Yao Yao ◽  
Fang-Jun Cao ◽  
Rui Yang ◽  
...  
Keyword(s):  
Antifungal Activity ◽  
Phytopathogenic Fungi ◽  
Sanguinarine And Chelerythrine ◽  
In Vitro Antifungal Activity

Synthesis and in-vitro antifungal activity of 6-trifluoromethyipyrazolo[3,4-6d]pyrimidin-4(5H)-thiones

1989 ◽  
Vol 27 (1) ◽  
pp. 77-83 ◽  
Author(s):  
Chiara B. Vicentini ◽  
Tiziana Poli ◽  
Augusto C. Veronese ◽  
Vincenzo Brandolini ◽  
Maurizio Manfrini ◽  
...  
Keyword(s):  
Antifungal Activity ◽  
In Vitro Antifungal Activity
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