The Study
Thyroid hormone activates adenosine 5'-monophosphate-activated protein kinase via intracellular calcium mobilization and activation of calcium/calmodulin-dependent protein kinase kinase-beta.
This study is like taking a single cell in a petri dish and watching what happens when you add a hormone — it shows how one molecule triggers another, like dominoes falling. But it doesn't tell us what happens in your body or if it affects your health.
Analysis score
Maximum 58 for a case-control study.
Where the score came from
Thyroid hormone tells cells to burn fat for energy by flipping a switch called AMPK, using calcium as a signal and CaMKKβ as the messenger.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 548 / 100
Quality score
Researchers compare people who have a condition (cases) with similar people who do not (controls), looking back in time for differences in exposure. Useful but more prone to bias.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes — this mechanism helps explain how thyroid hormone boosts metabolism and energy use in cells without waiting for gene changes.
- 2T3 increased AMPK phosphorylation within 5 minutes and boosted fatty acid oxidation by 30–50% in treated cells; this effect vanished when calcium was blocked or CaMKKβ was silenced.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Molecular endocrinology
Year
2008
Authors
Masako Yamauchi, F. Kambe, Xia Cao, Xiuli Lu, Y. Kozaki, Y. Oiso, H. Seo
Related Content
Claims (6)
Thyroid hormone T3 triggers a biochemical cascade in human and mouse cells that activates AMPK, increases phosphorylation of acetyl-CoA carboxylase, and boosts fatty acid oxidation without involving gene expression changes.
Triiodothyronine (T3) increases the rate at which cells produce ATP by boosting mitochondrial respiration, oxygen use, and glucose breakdown.
Thyroid hormone triggers a rapid increase in calcium inside human and mouse muscle cells, and this calcium increase is required for activating AMPK and increasing the breakdown of fatty acids.
Thyroid hormone activates AMPK in human and mouse cells only when thyroid hormone receptors TRα or TRβ are present; cells with these receptors show higher levels of AMPK phosphorylation than cells without them.
Thyroid hormone increases the breakdown of fatty acids in human and mouse cells by activating the CaMKKβ-AMPK signaling pathway, and blocking CaMKKβ prevents this increase.
Thyroid hormone triggers a biochemical chain reaction in human and mouse cells that reduces malonyl-CoA and allows more fatty acids to enter mitochondria to be burned for energy.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.