Interaction ofTrypanosoma cruzi with macrophages in vitro: Dissociation of the attachment and internalization phases by low temperature and cytochalasin B (original) (raw)

We’re sorry, something doesn't seem to be working properly.

Please try refreshing the page. If that doesn't work, please contact support so we can address the problem.

Abstract

Chicken macrophages, obtained by cultivation of blood monocytes, were infected with epimastigote and bloodstream trypomastigote forms of_Trypanosoma cruzi_ strain Y. The percentage of macrophages containing parasites within parasitophorous vacuoles and of flagellates attached to cell surfaces was determined. By incubation of the macrophages at 4°C or in the presence of cytochalasin B it was possible to dissociate the attachment from the internalization phases in the process of infection of macrophages. Both treatments had a marked effect on the internalization of epimastigote and trypomastigote forms. Cytochalasin B treatment and placement of the macrophages at 4° C before infection inhibited this process by about 99 and 96%, respectively. These results suggest that endocytosis is the principal mechanism of internalization of_T. cruzi_ by macrophages. They show also that epimastigote and trypomastigote forms of_T. cruzi_ have a different rate of adhesion to the macrophage surface.

Access this article

Log in via an institution

Subscribe and save

Buy Now

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

Download references

Author information

Authors and Affiliations

  1. Laboratório de Ultra-Estrutura Celular, Instituto de Biofísica, Universidade Federal do Rio de Janeiro, Ilha do Fundão, 21910, Rio de Janeiro, RJ, Brasil
    M. N. L. de Meirelles, T. C. de Araújo Jorge & W. de Souza
  2. Fundação Oswaldo Cruz, Avenida Brasil, 21040, Rio de Janeiro, RJ, Brasil
    M. N. L. de Meirelles

Authors

  1. M. N. L. de Meirelles
    You can also search for this author inPubMed Google Scholar
  2. T. C. de Araújo Jorge
    You can also search for this author inPubMed Google Scholar
  3. W. de Souza
    You can also search for this author inPubMed Google Scholar

Rights and permissions

About this article

Cite this article

de Meirelles, M.N.L., de Araújo Jorge, T.C. & de Souza, W. Interaction of_Trypanosoma cruzi_ with macrophages in vitro: Dissociation of the attachment and internalization phases by low temperature and cytochalasin B.Z. Parasitenkd. 68, 7–14 (1982). https://doi.org/10.1007/BF00926652

Download citation

Keywords