What question did this study set out to answer?

To characterize the development and features of autoimmune myocarditis relative to renal disease in the NZM2410 murine model of lupus nephritis.

October 12, 2020LupusOpen Access

Pathological manifestation of autoimmune myocarditis is detected prior to glomerulonephritis in a murine model of lupus nephritis

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Why the study?

Enhanced cMRI signals are linked to human lupus disease activity prior to renal failure, motivating the characterization of autoimmune myocarditis in an animal model to enable cardiac-focused therapeutic strategies.

Key Points

To characterize the development and features of autoimmune myocarditis relative to renal disease in the NZM2410 murine model of lupus nephritis.
Monitored NZM2410 mice weekly for renal disease markers via blood urea nitrogen (BUN) levels and body weight.
Evaluated cardiac function and myocardial edema using echocardiography and quantitative T2 cardiac magnetic resonance imaging (cMRI) mapping.
Analyzed endpoint serum cytokines and cardiac histopathology in mice, and compared findings against human lupus cardiac tissue samples.
Mice developed histological myocarditis and myocardial fibrosis at 30–35 weeks of age despite showing no evidence of significant renal disease.
T2 cMRI mapping revealed robust edema signals, while echocardiograms demonstrated significantly enlarged ventricular diameters and reduced ejection fractions.
Serum levels of IL-2, IL-10, TNF-α, CXCL1, and IL-6 were elevated, and cardiac infiltrates contained CD4+ and CD8+ T cells, matching patterns seen in human lupus heart tissue.

Population

NZM2410 murine lupus nephritis model and human lupus cardiac tissue

Design

Animal model study with comparative human tissue histopathology

Discussion

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Implication

Ventricular dilation with reduced EF occurs in NZM2410 lupus mice; hypothesis-generating for human myocarditis mechanisms, requiring translational validation.

Cite This Study

Young et al. (2020) studied this question.

synapsesocial.com/papers/6a007e276018b8d0892dc05e https://doi.org/10.1177/0961203320948959

Topics

Echocardiography Myocarditis

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Implication

Ventricular dilation with reduced EF occurs in NZM2410 lupus mice; hypothesis-generating for human myocarditis mechanisms, requiring translational validation.

Pathological manifestation of autoimmune myocarditis is detected prior to glomerulonephritis in a murine model of lupus nephritis

Key Points

Discussion

Implication

Cite This Study

Topics

Pathological manifestation of autoimmune myocarditis is detected prior to glomerulonephritis in a murine model of lupus nephritis

Key Points

Discussion

Implication

Cite This Study

Also Consider

Topics

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