ABSTRACT
Oral tolerance (OT) is characterized as a peripheral immune tolerance form, in which, mature lymphocytes in lymphoid tissues associated with mucosa, become non-functional or hypo responsive due to prior oral administration of antigen. OT is an important immunological phenomenon due to its therapeutic potential in inflammatory processes and others diseases. Here we evaluated leukotriene role in the induction of OT, as well as, the production of cytokines IL-5 and IFN-γ in leukotriene deficient animals (knock-out). Our results suggested that even in the presence of OT and leukotrienes absence, cytokine IFN-γ remains being secreted, which gives us an indication of immune system specificity and also that IFN-γ participates in various immune processes.
ABSTRACT
The prevalence of chronic disease in childhood has increased, placing families in constant contact with health professionals. In such situations the relationship with health professionals has an important role. Few scientific studies address this theme, in spite of its being highlighted as fundamental for effective interaction. The aim of this study was to characterize how the family of a child with a chronic disease perceives its relationship with health professionals. Twenty caregivers for children with chronic diseases were interviewed. The theoretical and methodological frameworks were, respectively, symbolic interactionism and thematic content analysis. The analytical process revealed four themes: role of the caregiver, stressful relationships, services and professionals, and seeking welcoming relationships. The outcomes of this interactional process, which show an incongruity of expectations and behaviors between professionals and families, are poor and generate feelings of abandonment. These can be eased through listening and understanding by other families in similar situations.
