What is the clinical evidence from this study?

Study design: Other. Population: Atherosclerosis. Intervention: SIRT1 deletion vs. Normal SIRT1 function. Primary outcome: Atherogenesis and macrophage foam cell formation.

What does this research mean for the field?

SIRT1 protects against atherosclerosis in mice by reducing macrophage foam cell formation and oxLDL uptake via suppression of the NF-κB/Lox-1 signalling pathway. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To determine the protective role of the deacetylase SIRT1 in macrophage foam cell formation and the development of atherogenesis.

May 17, 2026European Heart JournalOpen Access

SIRT1 decreases Lox-1-mediated foam cell formation in atherogenesis

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Key result

SIRT1 protects against murine atherosclerosis by curbing NF-κB-driven macrophage foam cell formation.

Why the study?

Does SIRT1 protect against atherogenesis by reducing macrophage foam cell formation?

Population

Atherosclerotic mice and peritoneal macrophages

Comparison

SIRT1 deletion vs Control mice (implied)

Design

Preclinical

Authors

SSSokrates SteinUniversity Hospital of Zurich CLChristine LohmannUniversity of Bern NSNicola SchäferUniversity of Zurich

Discussion

Member takes

Implication

SIRT1 protects against atherosclerosis by reducing macrophage foam cell formation, suggesting pharmacological SIRT1 activation as a potential anti-atherosclerotic strategy.

Key Points

To determine the protective role of the deacetylase SIRT1 in macrophage foam cell formation and the development of atherogenesis.
Evaluated atherosclerotic mouse models with global heterozygous SIRT1 deletion and bone marrow-restricted SIRT1 deletion.
Assessed oxidized low-density lipoprotein (oxLDL) uptake and foam cell formation in isolated peritoneal macrophages.
Investigated the molecular regulation of lectin-like oxLDL receptor-1 (Lox-1) and NF-κB pathway signaling.
Peritoneal macrophages from heterozygous SIRT1 mice exhibited increased oxLDL accumulation and accelerated foam cell formation.
Bone marrow-restricted deletion confirmed that macrophage-intrinsic SIRT1 expression is sufficient to suppress atherogenesis.
SIRT1 suppressed oxLDL uptake by downregulating Lox-1 expression through the inhibition of the NF-κB signaling pathway.

Structured PICO

Does SIRT1 protect against atherogenesis by reducing macrophage foam cell formation?

Population

Atherosclerotic mice (models with partial SIRT1 deletion and bone marrow-restricted SIRT1 deletion) and peritoneal macrophages

Intervention

SIRT1 deletion (partial and bone marrow-restricted)

Comparator

Control mice (implied)

Outcome

Atherogenesis and macrophage foam cell formationsurrogate

SIRT1 protects against atherosclerosis by reducing macrophage foam cell formation, suggesting pharmacological SIRT1 activation as a potential anti-atherosclerotic strategy.

Cite This Study

Stein et al. (2010) studied Atherosclerosis. SIRT1 deletion vs. Normal SIRT1 function was evaluated on Atherogenesis and macrophage foam cell formation. SIRT1 protects against atherosclerosis in mice by reducing macrophage foam cell formation and oxLDL uptake via suppression of the NF-κB signalling pathway.

synapsesocial.com/papers/6a09dc6e4b6ade4638cab09d https://doi.org/10.1093/eurheartj/ehq107

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Implication

SIRT1 protects against atherosclerosis by reducing macrophage foam cell formation, suggesting pharmacological SIRT1 activation as a potential anti-atherosclerotic strategy.

SIRT1 decreases Lox-1-mediated foam cell formation in atherogenesis

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

SIRT1 decreases Lox-1-mediated foam cell formation in atherogenesis

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Also Consider

Also Consider