Carla M Magalhães

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According to Bates (1989), the concept of temperament is applied when we refer to children, adolescents or adults, especially when we want to know more about a person’s activity, mood or emotional responses. Thus, temperament is a set of individual traits, with biological origins, present from early childhood, showing some kind of continuity over time.(More)
Coelenterazine, a member of the imidazopyrazinone class of chemiluminescent substrates, presents significant potential as a dynamic probe of reactive oxygen species in a biological environment, such as a superoxide anion, in which these species are important in cellular biology and pathology. The objective of the current study was to understand in what way(More)
Various inbred strains of rats presented differences in sensitivity to the induction of PCA reactions by mouse reaginic antibody. This was shown to be due to the presence of non-specific IgE in the normal sera of the bad recipients. Both positive and negative interaction, as measured by PCA reactions, could be observed between sera of the two different(More)
The bioluminescent reaction of the "sea firefly" Cypridina hilgendorfii is a prototypical system for marine bioluminescence, as its substrate possesses an imidazopyrazinone core that is a common link among organisms of eight phyla. The elucidation of the mechanism behind Cypridina bioluminescence is essential for future applications in bioimaging,(More)
Photodynamic therapy (PDT) of cancer is known for its limited number of side effects, and requires light, oxygen and photosensitizer. However, PDT is limited by poor penetration of light into deeply localized tissues, and the use of external light sources is required. Thus, researchers have been studying ways to improve the effectiveness of this(More)
The hexane extract of the stems of Raulinoa echinata afforded the sesquiterpenes germacrene D (6), 1beta,6alpha-dihydroxy-4-(15)-eudesmene (4) and oplopanone (5); the triterpenes squalene, isomultiflorenol (7), isobauerenol (8) and friedelin (9); the protolimonoids melianone (2) and melianodiol (3); and the pyranocoumarin 3-(1'-1'-dimethylallyl)-lomatin(More)
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