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Can cocaine block the uptake of neurotoxin produced by Trypanosoma cruzi?

C C Reis1, L S Utrilla, R D Ribeiro

  • 1Department of Health Sciences, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Brazil.

Angewandte Parasitologie
|November 1, 1989
PubMed

Insights

Cocaine treatment reduced Trypanosoma cruzi-induced parotid gland damage in mice, improving cell health and increasing survival rates. This study reveals cocaine's protective effects against Chagas disease pathology.

Area of Science:

  • Parasitology
  • Pathology
  • Pharmacology

Background:

  • Trypanosoma cruzi infection causes significant histopathological changes in host tissues.
  • The parotid gland's development and function can be compromised during infection.
  • Investigating therapeutic interventions for Chagas disease-related organ damage is crucial.

Purpose of the Study:

  • To investigate the morphological and morphometric effects of Trypanosoma cruzi on the mouse parotid gland.
  • To evaluate the protective action of cocaine on the parotid gland during infection.
  • To assess cocaine's impact on the survival of infected animals.

Main Methods:

  • Infection of mice with Trypanosoma cruzi (Bolivia strain).
  • Administration of cocaine to infected animals.
  • Histopathological and morphometric analysis of parotid gland tissues.
  • Survival rate assessment.

Main Results:

  • Trypanosoma cruzi infection led to reduced acinar cell height, nuclear volume, and increased chromatin condensation in the parotid gland.
  • Infected animals exhibited delayed parotid gland development with lymphoplasmocyte infiltrates.
  • Cocaine treatment mitigated acinar cell atrophy, reduced histopathological damage, and significantly increased survival.
  • Cocaine did not interfere with the inflammatory response in the stroma.

Conclusions:

  • Trypanosoma cruzi significantly impairs mouse parotid gland development.
  • Cocaine demonstrates a protective effect against T. cruzi-induced parotid gland pathology.
  • Cocaine enhances survival in infected mice without altering the inflammatory response.

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