The Claim
Endothelin-1 inhibits insulin-stimulated glucose uptake by disrupting RAC1-mediated cytoskeletal remodeling required for GLUT4 translocation.
What the research says
Roughly balanced
Support and challenge are close. The picture may shift as more studies come in.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Endothelin-1 reduces the ability of insulin to promote glucose uptake into cells by interfering with the cytoskeletal changes that move GLUT4 transporters to the cell surface.
See the scientific wording
Endothelin-1 inhibits insulin-stimulated glucose uptake by disrupting RAC1-mediated cytoskeletal remodeling required for GLUT4 translocation.
Endothelin-1 binds to receptors on the cell surface, triggering a signal that breaks down the internal scaffold made of actin and membrane lipids needed to move glucose transporters to the surface. Without this scaffold, the transporters cannot reach the membrane, so glucose cannot enter the cell even when insulin is present.
What the research says
3 studiesStudy: Endothelin-1 inhibits insulin-stimulated glucose uptake in isolated rat adipocytes.
This study shows that a substance called endothelin-1 blocks insulin from helping cells take in sugar, even though insulin itself still works fine. This supports the idea that endothelin-1 interferes with the cell’s internal machinery needed to move sugar transporters to the surface.
Study: Endothelin‐1 impairs glucose transporter trafficking via a membrane‐based mechanism
Endothelin-1 messes up the cell’s internal scaffolding needed to move glucose transporters to the surface, so insulin can’t do its job. The study shows this happens by breaking down key building blocks in the cell’s structure.
The study shows that endothelin-1 makes it harder for insulin to get sugar into fat cells, but it doesn’t explain how—so we don’t know if it’s because of the cytoskeleton or something else.
Related videos
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 3 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.