2014

Berberine activates thermogenesis in white and brown adipose tissue

Zhang Z, Zhang H, Li B, Meng X, Wang J, Zhang Y, Yao S, Ma Q, Jin L, Yang J, Wang W, Ning G

Published in Nature Communications

Abstract

Study demonstrating berberine stimulates thermogenesis and browning of white adipose tissue through AMPK activation, offering a mechanism for weight management and metabolic benefits beyond glucose control.

Methodology

Preclinical study in obese db/db and high-fat-diet mice, with brown adipocyte cell culture; measured energy expenditure, brown adipose tissue activity, white adipose browning markers and AMPK-PGC-1alpha signalling.

Key Findings

Berberine increased energy expenditure, raised body temperature and improved cold tolerance in obese mice. It activated brown adipose tissue and induced browning of white adipose tissue, with increased UCP1 expression, via an AMPK-PGC-1alpha dependent mechanism. Fat mass and insulin resistance improved.

Conclusions

Berberine activates thermogenesis in brown and white adipose tissue in mice through AMPK signalling, providing a mechanistic hypothesis for metabolic benefits beyond glucose lowering.

Limitations

Preclinical only; the intraperitoneal and high oral doses used in mice do not correspond to human supplement doses, and berberine oral bioavailability in humans is very low (under 1%). Brown fat activity is far more prominent in mice than in adult humans, so browning effects may not translate.