Hormonal
Transplantation of brown adipose tissue (BAT) into the visceral cavity of mice improves glucose tolerance, insulin sensitivity, and reduces body weight and fat mass through an IL-6-dependent endocrine mechanism.
This study shows that increasing brown fat activity (via transplantation in mice) improves insulin sensitivity and reduces fat mass through the release of IL-6 and FGF21. While human transplantation is not a viable option, these findings suggest that strategies to activate brown fat—such as cold exposure or specific pharmacological agents targeting IL-6 or FGF21 pathways—might help combat obesity and type 2 diabetes by improving glucose metabolism.
These findings reveal a previously under-appreciated role for BAT in glucose metabolism... The mechanism for this effect involves BAT-derived IL-6, as transplantation of BAT from Il6-knockout mice failed to significantly improve glucose homeostasis and insulin sensitivity.
Why this rating
High-quality controlled animal study with clear mechanistic validation (knockout mice), though results are not directly translatable to humans without further clinical trials.
Source
Brown adipose tissue regulates glucose homeostasis and insulin sensitivity
Kristin I. Stanford et al. · Journal of Clinical Investigation · 2012
DOI 10.1172/jci62308
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