Loss of Hepatic Angiotensinogen Attenuates Diastolic Dysfunction in Heart Failure with Preserved Ejection Fraction.

ABSTRACT: Heart failure with preserved ejection fraction (HFpEF) is a prevalent complex syndrome characterized by diastolic dysfunction with limited therapeutic options. While the renin-angiotensin system (RAS) is implicated in heart failure pathogenesis, the causal contribution of angiotensinogen (AGT), the unique precursor of the RAS, to HFpEF remains undefined. Using a two-hits mouse HFpEF model (high-fat diet + L-NAME), consistent upregulation of hepatic and plasma AGT  is identified in wild-type mice of both sexes. Critically, hepatocyte-specific AGT deletion directly ameliorated diastolic dysfunction in male and female HFpEF mice, whereas systemic angiotensin II blockade (losartan) failed to improve cardiac diastolic function. Mechanistically, hepatic AGT drove HFpEF through LRP2-mediated inte

SUBMITTER: Heng Z 

PROVIDER: S-EPMC12631940 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature