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Neuronal counting and parasympathetic dysfunction in the hearts of chronically Trypanosoma cruzi infected rats
Chapadeiro, E; Florencio, R. F. C; Afonso, P. C; Beraldo, P. S. S; Jesus, P. C; Junqueira Junior, L. F.
Rev. Inst. Med. Trop. Säo Paulo ; 33(5): 337-41, set.-out. 1991. ilus, tab
Article in English | LILACS | ID: lil-107751
RESUMO
Dez ratos machos Wistar cronicamente infectados pelas cepas Colombiana, Sao Felipe (12SF), e Y do Trypanosoma cruzi, foram submetidos, apos 8 meses de infeccao, juntamente com dez animais controles, ao teste da resposta bradicardica barorreflexa pela injecao endovenosa de fenilefrina. Seis ratos chagasicos exibiram disfuncao cardiaca parassimpatica, caracterizada pela depressao do indice da resposta bradicardica barorreflexa. Embora o estudo histologico dos coracoes chagasicos mostrasse lesoes dos ganglios atriais, a contagem dos neuronios em cortes seriados, nao apresentou reducao numerica significativa dos mesmos.
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Full text: Available Index: LILACS (Americas) Main subject: Parasympathetic Nervous System / Chagas Disease / Myocardium / Neurons Limits: Animals Language: English Journal: Rev. Inst. Med. Trop. Säo Paulo Journal subject: Tropical Medicine Year: 1991 Type: Article / Project document

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Full text: Available Index: LILACS (Americas) Main subject: Parasympathetic Nervous System / Chagas Disease / Myocardium / Neurons Limits: Animals Language: English Journal: Rev. Inst. Med. Trop. Säo Paulo Journal subject: Tropical Medicine Year: 1991 Type: Article / Project document