Dynamics of Trypanosoma cruzi infection in hamsters and novel association with progressive motor dysfunction
File(s)journal.pntd.0012278.pdf (4.58 MB)
Published version
Author(s)
Type
Journal Article
Abstract
Chagas disease is a zoonosis caused by the protozoan parasite Trypanosoma cruzi. Clinical outcomes range from long-term asymptomatic carriage to cardiac, digestive, neurological and composite presentations that can be fatal in both acute and chronic stages of the disease. Studies of T. cruzi in animal models, principally mice, have informed our understanding of the biological basis of this variability and its relationship to infection and host response dynamics. Hamsters have higher translational value for many human infectious diseases, but they have not been well developed as models of Chagas disease. We transposed a real-time bioluminescence imaging system for T. cruzi infection from mice into female Syrian hamsters (Mesocricetus auratus). This enabled us to study chronic tissue pathology in the context of spatiotemporal infection dynamics. Acute infections were widely disseminated, whereas chronic infections were almost entirely restricted to the skin and subcutaneous adipose tissue. Neither cardiac nor digestive tract disease were reproducible features of the model. Skeletal muscle had only sporadic parasitism in the chronic phase, but nevertheless displayed significant inflammation and fibrosis, features also seen in mouse models. Whereas mice had normal locomotion, all chronically infected hamsters developed hindlimb muscle hypertonia and a gait dysfunction resembling spastic diplegia. With further development, this model may therefore prove valuable in studies of peripheral nervous system involvement in Chagas disease.
Editor(s)
Debrabant, Alain
Date Issued
2024-06
Date Acceptance
2024-06-07
Citation
PLoS Neglected Tropical Diseases, 2024, 18 (6)
ISSN
1935-2727
Publisher
Public Library of Science (PLoS)
Journal / Book Title
PLoS Neglected Tropical Diseases
Volume
18
Issue
6
Copyright Statement
© 2024 Langston et al. This is an open
access article distributed under the terms of the
Creative Commons Attribution License, which
permits unrestricted use, distribution, and
reproduction in any medium, provided the original
author and source are credited.
access article distributed under the terms of the
Creative Commons Attribution License, which
permits unrestricted use, distribution, and
reproduction in any medium, provided the original
author and source are credited.
License URL
Identifier
http://dx.doi.org/10.1371/journal.pntd.0012278
Publication Status
Published
Article Number
e0012278
Date Publish Online
2024-06-21