Trypanosoma (herpetosoma) rangeli tejera, 1920: preliminary report on histopathology in experimentally infected mice

Authors

  • Cecilia de Scorza Universidad de Los Andes; Facultad de Ciencias; Departamento de Biologia
  • Servio Urdaneta-Morales Universidad Central de Venezuela; Facultad do Ciencias; Instituto de Zoologia Tropical
  • Felix Tejero Universidad Central de Venezuela; Facultad do Ciencias; Instituto de Zoologia Tropical

Abstract

Male mice (NMRI strain) of 3 and 5 g were inoculated i. p. with 8 x 10(6) and 9 x 10(4) metatrypomastigotes/g harvested from a 12-day-old LIT culture of Trypanosoma rangeli of the "Dog-82" strain. At regular intervals after inoculation, the animals were sacrificed and portions of heart, liver, spleen, lung, thigh, kidney, stomach, intestine, brain, sternum, and vertebral column were embedded in paraffin, sectioned, and stained with haematoxylin-eosin and Giemsa colophonium. Pathology was encountered in the first five tissues cited above. The subcutaneous, periosteal, interstitial, and peribronchial connective tissues, and later the muscle cells of the heart, were heavily parasitized by amastigotes and trypomastigotes. The possible reasons for the decrease in tissue parasitosis at the same time that the parasitemia is reaching its peak, and for the low level of inflammation in the parasitized tissues, are discussed. The observations of other workers, as well as the results described here, indicate that certain strains of T. rangeli under certain conditions may well cause pathological alterations in mammals.

Downloads

Download data is not yet available.

Published

1986-10-01

Issue

Section

Preliminary Report

How to Cite

Scorza, C. de, Urdaneta-Morales, S., & Tejero, F. (1986). Trypanosoma (herpetosoma) rangeli tejera, 1920: preliminary report on histopathology in experimentally infected mice . Revista Do Instituto De Medicina Tropical De São Paulo, 28(5), 371-378. https://revistas.usp.br/rimtsp/article/view/87516