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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Beneficial effects of captopril in acute coxsackievirus B3 murine myocarditis.

To date, there is no universally accepted therapy for viral myocarditis. We investigated the effect of the angiotensin converting enzyme inhibitor captopril on both early and late phases of coxsackievirus murine myocarditis. Mice were infected with coxsackievirus B3 and were divided into two main protocols. Mice in the early treatment protocol (n = 30) were treated on day 1 after infection with either captopril or saline through day 6 of infection and euthanized on day 6 of infection. In the late treatment protocol, mice (n = 60) were treated starting on day 10 of infection through day 30 of infection with either captopril or saline. Mice were killed on days 20 and 30 of infection. In the early treatment protocol, heart weight was 67 +/- 14 mg in the captopril-treated group versus 98 +/- 17 mg in the control group (p less than 0.0001). The degree of inflammation, necrosis, and dystrophic calcification assessed with a semiquantitative histological score was significantly less in the captopril-treated group. The degree of pathological involvement determined by planimetry of histological sections was 8.1 +/- 7.2% for the captopril-treated group versus 22.5 +/- 10.0% for the saline-treated group (p less than 0.0001). In the late treatment protocol, captopril also caused a reduction in heart weight as compared with controls at day 20 (116 +/- 21 mg in captopril-treated group vs. 166 +/- 34 mg in controls, p less than 0.0001) and also at day 30 (136 +/- 23 mg in captopril-treated group vs. 185 +/- 48 mg in controls, p less than 0.004). On days 20 and 30 of infection, the degree of inflammation, necrosis, and dystrophic calcification was similar in both groups. We conclude that captopril is beneficial in acute coxsackievirus B3 murine myocarditis because it reduces heart weight and necrosis when administered early and reduces heart weight when administered in a delayed manner.[1]

References

  1. Beneficial effects of captopril in acute coxsackievirus B3 murine myocarditis. Rezkalla, S., Kloner, R.A., Khatib, G., Khatib, R. Circulation (1990) [Pubmed]
 
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