Effects of isoxazolyl-naphthoquinoneimines on growth and oxygen radical production in Trypanosoma cruzi and Crithidia fasciculata
- PMID: 2189749
- DOI: 10.1007/BF01954247
Effects of isoxazolyl-naphthoquinoneimines on growth and oxygen radical production in Trypanosoma cruzi and Crithidia fasciculata
Abstract
Several 4-(aminomethylisoxazolyl)-1,2-naphthoquinones inhibited growth and DNA synthesis in Trypanosoma cruzi and stimulated O2 uptake and O2-. generation by the parasite epimastigotes and their mitochondrial and microsomal membranes; these results support the idea that oxygen radicals play a role in quinone toxicity. Maximal effects on respiration and O2-. generation were observed with antimycin-inhibited cells. Similar results as well as stimulation of H2O2 production were obtained with Crithidia fasciculata despite the presence of catalase in this organism.