Hormonal
Myeloid-specific deletion of SIRT1 in macrophages induces hyperacetylation of the NF-kB RelA/p65 subunit, leading to chronic systemic inflammation, insulin resistance, and exacerbated obesity under high-fat dietary conditions.
Maintaining healthy metabolic function supports the activity of SIRT1, which helps regulate inflammation. While this study used genetic deletion in mice, it highlights that chronic inflammation and insulin resistance are linked to immune cell function. For humans, focusing on metabolic health through diet and exercise supports the natural regulatory pathways that SIRT1 is involved in, rather than relying on unproven supplements to target SIRT1 directly.
Ablation of SIRT1 in macrophages renders NF-(cid:1)B hyperacetylated, resulting in increased transcriptional activation of proinflammatory target genes. Consistent with increased proinflammatory gene expression, Mac-SIRT1 KO mice challenged with a high-fat diet display high levels of activated macrophages in liver and adipose tissue, predisposing the animals to development of systemic insulin resistance and metabolic derangement.
Why this rating
High-quality in vivo mouse model with specific genetic knockout and rigorous biochemical validation, though not human clinical data.
Source
Myeloid Deletion of SIRT1 Induces Inflammatory Signaling in Response to Environmental Stress
Thaddeus T. Schug et al. · Molecular and Cellular Biology · 2010
DOI 10.1128/mcb.00657-10
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