Two major insect moulting hormones, alpha ecdysone and 20-hydroxyecdysone, are found in bracken.
2.
Several phytoecdysteroids ( compounds related to the insect moulting hormone ecdysteroid ) have been identified from the fungus, including paxillosterone, 20, 22-" p "-hydroxybenzylidene acetal, atrotosterones A, B, and C, and 25-hydroxyatrotosterones A and B.
3.
It is therefore one of the most common moulting hormones in insects, crabs, etc . It is also a phytoecdysteroid produced by various plants, including " Cyanotis vaga ", where its purpose is presumably to disrupt the receptor, 20-hydroxyecdysone may affect mammalian ( including human ) biological systems " in vitro ", but there is uncertainty whether any " in vivo " or physiological effects occur . 20-Hydroxyecdysone is an ingredient of some supplements that aim to enhance physical performance, but there is no clinical evidence for this effect.
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