Avaliação das alterações histopatologicas do pancreas de camundongos infectados experimentalmente pela cepa RAL de Trypanosoma cruzi

AUTOR(ES)
DATA DE PUBLICAÇÃO

2002

RESUMO

Searching the physiopatology of Chagas disease in clinical researches, the idea that the bearers of this disease present what could be defined as a difficulty of the sick organism in maintaining the homeostasis through the regulation of their functions as motive, secretors or metabolic. One of the main causes related to the diversity of anatomopathological alterations that the parasite T.cruzi promotes in the host is direct/y linked to the morphologic characteristics of strains the that can show a tissular differentiated tropism. The parameters were evaluated in both sexes were in the acute phase, analyzing the comparative parasitemia, histopathology, and morfometry (cariometric and surface analysis) of the pancreas. The experimental model used was the both sexes of albino mouse (Mus musculus) of the lineage Swiss. RAL strain of T .cruzi was used with the inoculum of 2 x 104 blood trypomastigotes forms. In pre-determined days the animals were killed being pancreas and blood collected for the evaluation of glycemy, enzymes lipase and amylase (total). The high parasitemy happens in different days, being in the 12° for the females, and the 14° for the males with an appreciable increasing of the parasites number for the males. When comparing the pancreatic islets of the infected groups with the control groups of both sexes, there was an atrophy in a-cells and hypertrophy in ?-cells of the pancreatic islets of both sexes of the infected groups, however, the pancreatic acids of infected females demonstrated a larger hypertrophy, and a glycemic reduction only accentuated in relation to the infected males. Amylases didn t show significant variations among the groups infected (males and females), but the lipases had a significant variation among the male and female groups, but no significant between infected groups and controls of the same sex. Observing all the appraised aspects in the present work we noted biochemical alterations and histological destruction of the pancreatic gland of animals infected with the T.cruzi RAL strain. The T .cruzi RAI,. strain presents an atypical behavior in relation to the other studied strains- described in the literature, promoting more intense pancreatic alterations in the female animals that in males

ASSUNTO(S)

camundongo histologia chagas pancreas doença de glicemia

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