Hormonal
Genetic deficiency or pharmacological inhibition of the NLRP3 inflammasome (specifically Nlrp3, ASC, or Caspase-1) protects against high-fat diet-induced obesity and insulin resistance by reducing adipose tissue inflammation, lowering pro-inflammatory cytokines (IL-1β, IL-18), and increasing energy expenditure.
This research suggests that chronic low-grade inflammation in fat tissue, driven by the NLRP3 inflammasome, plays a key role in obesity and insulin resistance. While this is an animal study, it implies that targeting inflammatory pathways (like IL-1β) might help treat obesity and diabetes, independent of just reducing calorie intake. It highlights that obesity is an active inflammatory disease, not just a storage issue.
Here, we showed that mice deficient in Nlrp3, apoptosis-associated speck-like protein, and caspase-1 were resistant to the development of high-fat diet-induced obesity, which correlated with protection from obesity-induced insulin resistance.
Why this rating
High-quality mechanistic evidence using multiple knockout models (Nlrp3-, ASC-, Casp1-) and clamp studies, but limited to mice.
Source
Inflammasome is a central player in the induction of obesity and insulin resistance
Rinke Stienstra et al. · Proceedings of the National Academy of Sciences · 2011
DOI 10.1073/pnas.1100255108
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