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Highly Oxidized Ecdysteroids from a Commercial Cyanotis arachnoidea Root Extract as Potent Blood-Brain Barrier Protective Agents.

Gábor TóthAna R Santa-MariaIbolya HerkeTamás GátiDaniel Galvis-MontesFruzsina R WalterMária A DeliAttila Hunyadi
Published in: Journal of natural products (2023)
Ecdysteroid-containing herbal extracts, commonly prepared from the roots of Cyanotis arachnoidea , are marketed worldwide as a "green" anabolic food supplement. Herein are reported the isolation and complete 1 H and 13 C NMR signal assignments of three new minor ecdysteroids (compounds 2 - 4 ) from this extract. Compound 4 was identified as a possible artifact that gradually forms through the autoxidation of calonysterone. The compounds tested demonstrated a significant protective effect on the blood-brain barrier endothelial cells against oxidative stress or inflammation at a concentration of 1 μM. Based on these results, minor ecdysteroids present in food supplements may offer health benefits in various neurodegenerative disease states.
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