Fluconazole and amphotericin-B resistance are associated with increased catalase and superoxide dismutase activity in Candida albicans and Candida dubliniensis.

Introduction: Candida dubliniensis, a new species of Candida that has been recovered from several sites in healthy people, has been associated with recurrent episodes of oral candidiasis in AIDS and HIV-positive patients. This species is closely related to C. albicans.

Candida dubliniensis does not show phospholipase activity: true or false?

Introduction: The phospholipase activity in Candida albicans and Candida dubliniensis isolated from oral candidiasis cases were studied.

Methods: The phospholipase activity was evaluated in egg yolk agar.

Results: All the C.

Enzymatic and hemolytic activities of Candida dubliniensis strains.

Candida dubliniensis is an opportunistic yeast that has been recovered from several body sites in many populations; it is most often recovered from the oral cavities of human immunodeficiency virus-infected patients. Although extensive studies on epidemiology and phylogeny of C. dubliniensis have been performed, little is known about virulence factors such as exoenzymatic and hemolytic activities.

Comparison among tomato juice agar with other three media for differentiation of Candida dubliniensis from Candida albicans.

The purpose of the present study is to compare the tomato juice agar, a well known medium employed to observe ascospore formation, with niger seed agar, casein agar and sunflower seed agar, applied to a differentiation between C. dubliniensis and C. albicans.

Mercury toxicity induces oxidative stress in growing cucumber seedlings.

In this study, the effects of exogenous mercury (HgCl(2)) on time-dependent changes in the activities of antioxidant enzymes (catalase and ascorbate peroxidase), lipid peroxidation, chlorophyll content and protein oxidation in cucumber seedlings (Cucumis sativus L.) were investigated. Cucumber seedlings were exposed to from 0 to 500microM of HgCl(2) during 10 and 15 days.

Evaluation of 5 new media containing extracts of seeds applied to Candida dubliniensis screening.

Candida dubliniensis is a recently described pathogenic species that shares many phenotypic features with Candida albicans and so may be misidentified in microbiologic laboratories. The aim of this study is to find a useful and cost-effective method suitable for screening C. dubliniensis before proceeding to further identification.

[Utilization of tomato juice agar (V8 agar) in the presumptive identification of Candida dubliniensis].

We evaluated the capacity of tomato juice agar (V8 agar) to differentiate Candida dubliniensis from Candida albicans based on chlamydospore production. Candida albicans (n= 93) and Candida dubliniensis (n= 26) were studied; 100% of Candida dubliniensis showed chlamydospores and in 92.5% of Candida albicans isolates these elements were absent.

Chemical analysis and antifungal activity of the essential oil of Calea clematidea.

The chemical composition of the essential oils of Calea clematidea Baker obtained by hydrodistillation of the leaves and flowers was analysed by GC and GC/MS and the oils were assayed for their antifungal activities. The essential oil of the leaves showed a high content of a new natural epoxy terpenoid, named clemateol (ca. 70 %), with minor amounts of o-vanillin (6.