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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Altera??es nas concentra??es das SRAT, conte?do de GSH e atividade da CAT em pacientes com esquistossomose aguda

Cunha, Gina Michelle Mac?do da 30 January 2008 (has links)
Made available in DSpace on 2014-12-17T14:16:21Z (GMT). No. of bitstreams: 1 GinaMMC.pdf: 1174181 bytes, checksum: 37699ea266658587623a87a8fcd376f3 (MD5) Previous issue date: 2008-01-30 / Schistosomiasis is an ancient disease caused by helminth Schistosoma mansoni and is a public health problem in Brazil. The granulomatous lesion, typical of the disease, associates itself with increase in the oxidative damage through the generation of free radicals. The aim of this work was to evaluate the occurrence of changes in parameters oxidant / antioxidant that are part of the human defense system, and observe whether they would cause oxidative stress in subjects with schistosomiasis. Moreover, correlating with some biochemical and hematological parameters. Two groups were selected for study, consisting of individuals of both sexes, aged between 16 and 30 years. A control group, formed by individuals without schistosomiasis (n = 30) and a test group, formed by individuals with schistosomiasis (n = 30). The evaluation of lipid peroxidation in plasma was performed by determination of malondialdehyde and antioxidant defense by the quantification of reduced glutathione and catalase activity. For the parameters that assess oxidative stress, the results showed a decrease in the content of reduced glutathione and no change in the activity of catalase, with an increase in the value of malondialdehyde. Therefore, the data found suggest the occurrence of oxidative stress in subjects with schistosomiasis. Of the parameters that assess hepatic function, only levels of aspartate aminotransferase have been high, while there was a decrease of bilirubine. There was a significant change in the lipid profile (p <0.5), however with regard to the renal function of patients, there was a decrease in creatinine. The assessment hematological, made through hemogram and the quantification of hemoglobin, shows increase of eosinophils individuals in the group test, which can be related to the presence of the parasite. The amendments suggest the involvement of oxidative stress in the pathophysiology of this disease / A esquistossomose ? uma doen?a milenar causada pelo helminto Schistosoma mansoni e constitui um problema de sa?de p?blica no Brasil. A les?o granulomatosa, t?pica da doen?a, est? associada com o aumento do dano oxidativo atrav?s da gera??o de radicais livres. O objetivo deste trabalho foi avaliar a ocorr?ncia de altera??es nos par?metros oxidante/antioxidante que fazem parte do sistema de defesa do organismo, e observar se os mesmos provocariam estresse oxidativo em indiv?duos com esquistossomose. Al?m disso, correlacionando com alguns par?metros bioqu?micos e hematol?gicos. Foram selecionados dois grupos de estudo, constitu?dos de indiv?duos de ambos os sexos, com faixa et?ria compreendida entre 16 e 30 anos. Um grupo controle, formado por indiv?duos sem esquistossomose (n=30) e um grupo teste, formado por indiv?duos com esquistossomose (n=30). A avalia??o da peroxida??o lip?dica no plasma foi realizada por meio da determina??o do malondialde?do e a defesa antioxidante pela dosagem da glutationa reduzida e determina??o da atividade da catalase. Em rela??o aos par?metros que avaliam o estresse oxidativo, os resultados demonstraram uma diminui??o do conte?do de glutationa reduzida e nenhuma altera??o na atividade da catalase, com um aumento nos valores de malondialde?do. Portanto, os dados encontrados sugerem a ocorr?ncia do estresse oxidativo nos indiv?duos com esquistossomose. Dos par?metros que avaliam a fun??o hep?tica, apenas os n?veis de aspartato amino transferase mostraram-se elevados, enquanto ocorreu uma diminui??o da bilirrubina. N?o houve uma altera??o significativa no perfil lip?dico (p<0.5), entretanto com rela??o ? fun??o renal dos pacientes, houve uma diminui??o da creatinina. A avalia??o hematol?gica, realizada atrav?s do hemograma completo e a dosagem da hemoglobina, mostra eosinofilia nos indiv?duos do grupo teste, que pode estar relacionada com a presen?a do parasita. As altera??es apresentadas sugerem a participa??o do estresse oxidativo na fisiopatologia da referida doen?a

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