Tag: Brown Adipose Tissue

Non-pharmacological and Pharmacological Strategies of Brown Adipose Tissue Recruitment in Humans

This 2015 review explores various methods to activate and recruit brown adipose tissue (BAT) in humans, aiming to enhance energy expenditure and improve metabolic health. Non-pharmacological strategies include cold exposure, which stimulates BAT activity through sympathetic nervous system activation, and exercise-induced hormones like irisin and FGF21 that promote the browning

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Cold but Not Sympathomimetics Activates Human Brown Adipose Tissue In Vivo

This 2012 study investigated the effects of mild cold exposure and the sympathomimetic drug ephedrine on brown adipose tissue (BAT) activation in 10 healthy adults. Using ^18F-fluorodeoxyglucose PET-CT scans, researchers found that cold exposure significantly increased BAT activity in all participants, while ephedrine did not stimulate BAT despite increasing heart

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Dietary Factors Promoting Brown and Beige Fat Development and Thermogenesis

This 2017 review synthesizes current evidence on how specific dietary components influence brown adipose tissue (BAT) activation and the browning of white adipose tissue (WAT), processes that enhance thermogenesis and energy expenditure. The authors highlight several dietary molecules, including phytochemicals like capsaicin, resveratrol, curcumin, green tea catechins, and berberine; dietary

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Estradiol regulates brown adipose tissue thermogenesis via hypothalamic AMPK

This 2014 study elucidates how estradiol (E2) centrally modulates energy expenditure by acting on the hypothalamic ventromedial nucleus (VMH). E2 inhibits AMP-activated protein kinase (AMPK) via estrogen receptor alpha (ERα) in the VMH, leading to activation of brown adipose tissue (BAT) thermogenesis through the sympathetic nervous system (SNS), independent of

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Effect of Iodothyronines on Thermogenesis: Focus on Brown Adipose Tissue

This review examines the role of iodothyronines, particularly triiodothyronine (T3) and 3,5-diiodothyronine (3,5-T2), in regulating thermogenesis via brown adipose tissue (BAT). T3 enhances BAT thermogenic activity by upregulating uncoupling protein 1 (UCP1) expression and increasing mitochondrial biogenesis. 3,5-T2, a thyroid hormone metabolite, also stimulates BAT thermogenesis through mechanisms that are

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Similarities and Differences in the Peripheral Actions of Thyroid Hormones and Their Metabolites

This review explores the distinct and overlapping peripheral effects of thyroid hormones (THs), particularly triiodothyronine (T3), and their metabolites, such as 3,5-diiodothyronine (3,5-T2) and 3-iodothyronamine (T1AM). T3 and 3,5-T2 enhance mitochondrial activity and thermogenesis, notably in brown adipose tissue (BAT), with 3,5-T2 mimicking T3’s effects without significant cardiac side effects.

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The Effects of Thyroid Hormones on Brown Adipose Tissue in Humans: A PET-CT Study

This 2014 clinical investigation explored how thyroid hormones influence brown adipose tissue (BAT) activity in euthyroid human subjects using PET-CT imaging. Participants with higher circulating thyroid hormone levels, especially triiodothyronine (T3), demonstrated significantly increased glucose uptake in BAT, indicating heightened thermogenic activity. The study confirmed that thyroid hormones directly stimulate

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