Megaesophagus in Experimental Chagas’ Disease

  • Masayuki Okumura
  • Mitsunori Matsuda
  • Toshiyasu Fujioka
  • Kiyoshi Iriya
Conference paper


Chagas’ disease is a parasitosis and its etiological agent is the flagellate protozoa Trypanosoma cruzi [1]. The parasite is a hemoflagellate, Phylum Protozoa, subphylum Mastigophora, order Kinetoplastida, suborder Trypanosomatidae, and section Stercoraria. Described for the first time by the Brazilian scientist Carlos Chagas when, during the construction of the Brazilian Central Railway and a malaria prevention program in the town of Lassance in northern Minas Gerais state, his attention was drawn to an hematophagous insect found in the region and known in Brazil by the common name “barbeiro” (barber bug), Conorhinus megistus, Triatoma megistus and presently Panstrongylus megistus. He examined the content of the caudal portion of the insect’s intestine and succeeded in isolating a Trypanosoma flagellate with “critidia” characteristics.


Acute Stage Chronic Stage Trypanosoma Cruzi Binary Fission American Trypanosomiasis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Tokyo 1993

Authors and Affiliations

  • Masayuki Okumura
  • Mitsunori Matsuda
  • Toshiyasu Fujioka
  • Kiyoshi Iriya
    • 1
    • 2
  1. 1.University of S. Paulo Medical SchoolS. PauloBrazil
  2. 2.Hospital Santa CruzCaixaBrazil

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