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Candida albicans is able to generate significant amounts of reactive oxygen species (ROS). In this study, ROS generation by yeast and hyphal forms of the strain 3153 A was analyzed to determine whether ROS generation could be a major factor in the invasive behavior of germinative cells. Furthermore, the virulent strain CA6 and its avirulent and agerminative mutant VIR3 were compared. ROS were measured by lucigenin-enhanced chemiluminescence and a cytochrome c assay. During the blastoconidial phase of all strains moderate amounts of ROS were found at cell concentrations > 1 x 10(5)/ml. However, ROS generation appeared to be specifically inhibited at cell concentrations > 1 x 10(8)/ml, and this was found in both assays. As shown in comparative experiments, the medium used for measurement markedly affected the total amount of ROS. Hyphae of strain 3153 A generated a significantly higher amount of ROS than yeast cells and cells with germ tubes (P < 0.001). The strain CA6 showed significantly higher ROS generation than the VIR3 strain for both blastoconidiae and after 30 min of induction of hypha formation (P < 0.05). In conclusion, hypha formation, usually acknowledged as a major factor in Candida pathogenicity, was associated with markedly increased ROS formation. ROS generation was not closely linked to the ability to form hyphae, but was highest in germinative cells.

Neopterin is produced by macrophages after stimulation with interferon y or lipopolysaccharide. Its production is increased in many infectious, autoimmune, and malignant diseases. The aim of this study was to examine whether, on the basis ofneopterin as a marker, liver diseases could be classified according to aetiology and stage of disease. A cohort of 264 patients with chronic liver diseases (viral, metabolic, autoimmune, toxic) and 150 normal controls were studied; 136 of the patients had cirrhosis. Increased serum neopterin concentrations were found in 41% of all patients (controls 6-0 (2.2) nmol/l), with patients in the cirrhotic stage of disease showing higher neopterin values (mean (SD) 15.7 (23.6) nmol/ml) than those in the non-cirrhotic stage (9.9 (5

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Terbinafine is the first orally active allylamine. Though it is available since several years, experience in children is rather limited. We report about five cases of dermatophytoses in children successfully treated with oral terbinafine. Five children (age: 10 month to 14 years) with a clinical and mycological diagnosis of dermatophytosis were treated with oral terbinafine according to their body weight: 250 mg/d (< 40 kg), 125 mg/d (20-40 kg) and 62.5 mg/d (< 20 kg). The course of treatment was 2 to 4 weeks. In 2/5 patients previous systemic treatment with oral griseofulvin failed. Terbinafine therapy resulted in a complete clearance of mycotic infections (both clinical and mycological) in 5/5 children. No unwanted side-effects were observed. During a nine month follow-up no relaps occurred. In our five cases tolerability, clinical and mycological response of terbinafin therapy were excellent. Its penetration into sebum and only slow release from skin glands may explain the efficacy even in short-time therapy.

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