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Coxsackievirus B3 myocarditis in C3H/HeJ mice: Description of an inbred model and the effect of exercise on virulence

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Abstract

The effect of forced exercise on the development of coxsackievirus 133 myocarditis in inbred C3H/HeJ mice was studied. Four groups of mice (30 per group) were formed: infected-exercised (Group I); infected-unexercised (Group II); uninfected-exercised (Group III); and uninfected unexercised (Group IV). Infected mice were inoculated intraperitoneally with 1.0 × 102.1 TCID50 coxsackievirus 133. Exercised animals were swum daily for 60 minutes on days 1–9. Myocardial viral titers were acutely elevated on day 3 of infection and were augmented significantly by exercise on days 6 and 9. Exercise increased the overall mortality from 0–10% to 20–40%; significantly increased heart: body weight ratios on days 6, 9 and 13; and increased the extent of myocardial fiber necrosis. We have reproduced the acceleration of C133 myocarditis by exercise in the inbred C3H model.

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Cristina Basso, Katarzyna Michaud, … on behalf of the Association for European Cardiovascular Pathology

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Kiel, R.J., Smith, F.E., Chason, J. et al. Coxsackievirus B3 myocarditis in C3H/HeJ mice: Description of an inbred model and the effect of exercise on virulence. Eur J Epidemiol 5, 348–350 (1989). https://doi.org/10.1007/BF00144836

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  • DOI: https://doi.org/10.1007/BF00144836

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