What is the clinical evidence from this study?

Study design: Other. Population: T cell-mediated myocarditis. Intervention: PD-1 deficiency vs. Wild-type. Primary outcome: Disease severity (inflammation and myocardial damage).

What question did this study set out to answer?

The research investigates how PD-1 influences T cell responses in myocarditis models.

April 10, 2012The Journal of ImmunologyOpen Access

PD-1 Protects against Inflammation and Myocyte Damage in T Cell-Mediated Myocarditis

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Key result

PD-1-deficient mice developed enhanced T cell-mediated myocarditis with increased inflammation and myocardial damage compared with wild-type mice.

Why the study?

Does PD-1 deficiency exacerbate inflammation and myocyte damage in T cell-mediated myocarditis models?

Population

Mouse models of myocarditis (CD8 T cell-mediated adoptive transfer model and experimental autoimmune…

Comparison

PD-1 deficiency (Pd1 CD8 T cells or PD-1… vs Wild-type (Pd1 CD8 T cells or wild-type mice)

Design

Preclinical

Authors

MTMargarite L. TarrioBrown University NGNir GrabieBrigham and Women's Hospital DBDe-xiu BuBrigham and Women's Hospital

Discussion

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Implication

PD-1 may protect against T cell-mediated myocarditis; leaves open whether checkpoint inhibition raises cardiotoxicity risk in patients.

Key Points

The research investigates how PD-1 influences T cell responses in myocarditis models.
Utilized CD8(+) T cell-mediated adoptive transfer model and experimental autoimmune myocarditis model.
Compared wild-type and PD-1 deficient mice in terms of inflammation and myocardial damage.
Analyzed T cell proliferation and cytotoxicity against myocardial endothelial cells.
PD-1 deficiency leads to increased disease severity and inflammation in myocarditis models.
Enhanced cytotoxic activity was observed in PD-1-deficient T lymphocytes (increased infiltration of neutrophils).
Serum markers of myocardial damage were significantly elevated in PD-1-deficient mice.

Structured PICO

Does PD-1 deficiency exacerbate inflammation and myocyte damage in T cell-mediated myocarditis models?

Population

Mouse models of myocarditis (CD8(+) T cell-mediated adoptive transfer model and experimental autoimmune myocarditis)

Exposure

PD-1 deficiency (Pd1(-/-) CD8(+) T cells or PD-1 knockout mice)

Comparator

Wild-type (Pd1(+/+) CD8(+) T cells or wild-type mice)

Outcome

Myocarditis disease severity (inflammatory infiltrate and myocardial damage)surrogate

The PD-1 pathway plays a critical role in limiting autoreactive T cell responses and protecting against inflammation and myocyte damage in the heart.

Cite This Study

Tarrio et al. (2012) studied T cell-mediated myocarditis. PD-1 deficiency vs. Wild-type was evaluated on Disease severity (inflammation and myocardial damage). PD-1-deficient mice developed enhanced T cell-mediated myocarditis with increased inflammation and myocardial damage compared with wild-type mice.

synapsesocial.com/papers/6a542e38626008a95bd64906 https://doi.org/10.4049/jimmunol.1200389

Topics

Myocarditis

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PD-1 Protects against Inflammation and Myocyte Damage in T Cell-Mediated Myocarditis

Discussion

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Implication

Key Points

Structured PICO

Cite This Study

Topics

PD-1 Protects against Inflammation and Myocyte Damage in T Cell-Mediated Myocarditis

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

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