Hormonal
Beige adipocytes utilize a UCP1-independent thermogenic mechanism driven by ATP-dependent Ca2+ cycling via SERCA2b and RyR2, which contributes to systemic energy expenditure and glucose homeostasis.
If you lack functional brown fat (common in obesity or aging), you may still possess beige fat capable of generating heat through alternative calcium-based mechanisms. Strategies that induce 'beiging' (like cold exposure or exercise) may still improve metabolic health even if they don't rely on UCP1.
The newly identified UCP1-independent thermogenic mechanism depends on ATP-dependent Ca2+ cycling via SERCA2b and the Ca2+ release channel ryanodine receptor 2 (RyR2)... beige fat dramatically contributes to whole-body energy and glucose homeostasis via UCP1-independent metabolic mechanisms.
Why this rating
Based on multiple mouse models (KO, transgenic) and cited human imaging studies, though direct human therapeutic data is limited.
Source
UCP1 Dependent and Independent Thermogenesis in Brown and Beige Adipocytes
Kenji Ikeda et al. · Frontiers in Endocrinology · 2020
DOI 10.3389/fendo.2020.00498
More from this paper
- Creatine substrate cycling serves as a UCP1-independent thermogenic pathway in beige adipocytes, contributing to energy expenditure and thermogenesis.Good
- Beige adipocytes can repress adipose tissue fibrosis and improve glucose homeostasis through mechanisms independent of UCP1 and body weight reduction.Moderate
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