Skip to main content

Advertisement

Log in

Mast cell-nerve interaction in the colon of Trypanosoma cruzi-infected individuals with chagasic megacolon

  • Original Paper
  • Published:
Parasitology Research Aims and scope Submit manuscript

Abstract

Chagas disease is an infection caused by the parasite Trypanosoma cruzi that affects millions of people worldwide and is endemic in Latin America. Megacolon is the most frequent complication of the digestive chronic form and happens due to lesions of the enteric nervous system. The neuronal lesions seem to initiate in the acute phase and persist during the chronic phase, albeit the mechanisms involved in this process are still debated. Among the cells of the immune system possibly involved in this pathological process is the mast cell (MC) due to its well-known role in the bi-directional communication between the immune and nervous systems. Using ultrastructural analysis, we found an increased number of degranulated MCs in close proximity to nerve fibers in infected patients when compared with uninfected controls. We also immunostained MCs for the two pro-inflammatory molecules tryptase and chymase, the first being also important in neuronal death. The number of MCs immunostained for tryptase or chymase was increased in patients with megacolon, whereas increased tryptase staining was additionally observed in patients without megacolon. Moreover, we detected the expression of the tryptase receptor PAR2 in neurons of the enteric nervous system, which correlated to the tryptase staining results. Altogether, the data presented herein point to the participation of MCs on the denervation process that occurs in the development of T. cruzi-induced megacolon.

This is a preview of subscription content, log in via an institution to check access.

Access this article

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

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4

Similar content being viewed by others

References

Download references

Funding

This work was supported by the Conselho Nacional de desenvolvimento Científico e Tecnológico (CNPq) and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES).

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Débora d’Avila Reis.

Ethics declarations

Conflict of interest

The authors declare that they have no conflict of interest.

Additional information

Patricia Massara Martinelli and Débora d’Ávila Reis are equal senior authors

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Martins, P.R., Nascimento, R.D., dos Santos, A.T. et al. Mast cell-nerve interaction in the colon of Trypanosoma cruzi-infected individuals with chagasic megacolon. Parasitol Res 117, 1147–1158 (2018). https://doi.org/10.1007/s00436-018-5792-z

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00436-018-5792-z

Keywords

Navigation