C-Type Natriuretic Peptide Preserves Vascular and Cardiac Function in Sepsis.

Summary

In sepsis patients, NT-proCNP levels were elevated and inversely associated with disease severity. Using endothelial-restricted models, the study shows endogenous CNP preserves microvascular perfusion, endothelial integrity, and cardiac function through NPR-C signaling, positioning CNP pathways as a therapeutic target.

Key Findings

• NT-proCNP is elevated in sepsis patients and associates with reduced disease severity.
• Endogenous/endothelial CNP preserves microvascular perfusion, endothelial integrity, and cardiac function.
• Protective effects are mediated via NPR-C signaling, suggesting pharmacologic targeting of this pathway.

Clinical Implications

CNP/NPR-C signaling may serve as a therapeutic target to improve microvascular perfusion and cardiac function in sepsis; patient stratification using NT-proCNP levels could inform future trials.

Limitations

• Human data are observational with unspecified sample size and no interventional testing.
• Preclinical models may not fully capture human sepsis heterogeneity.

Future Directions

Conduct dose-ranging and safety studies of CNP pathway agonists in early-phase sepsis trials and validate NT-proCNP as a stratification biomarker.