Research
Hormonal
Pharmacological inhibition or genetic knockdown of hypothalamic Sirt1 reduces food intake and body weight gain in rodents by activating the central melanocortin system.
This research identifies hypothalamic Sirt1 as a key regulator of hunger. Inhibiting this specific enzyme in the brain reduces food intake and body weight in rats by activating the melanocortin system. While not a direct human therapy yet, it highlights Sirt1 as a potential target for treating obesity.
ModerateSupportsMEDIUM confidence
Pharmacological inhibition or siRNA mediated knock down of hypothalamic Sirt1 showed to decrease food intake and body weight gain. Central administration of a specific melanocortin antagonist, SHU9119, reversed the anorectic effect of hypothalamic Sirt1 inhibition, suggesting that Sirt1 regulates food intake through the central melanocortin signaling.
Why this rating
The study uses rodent models (rats and cell lines), which limits direct translatability to humans without further clinical validation.
Source
Hypothalamic Sirt1 Regulates Food Intake in a Rodent Model System
Işın Çakır et al. · PLoS ONE · 2009
DOI 10.1371/journal.pone.0008322
mechanism_onlyCited 194×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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