We found four lichen compounds (atranorin, perlatolic acid, physodic acid and usnic
acid) that exhibited potent neurotrophic activity similar to that of a known neurotrophin, NGF.
The crude extract of lichen sample was filtered and stored at 4degC for 24 h to precipitate usnic
In previous studies performed in our laboratory, H1299 lung cancer cells were exposed to 29 [micro]M usnic
acid for up to 48 hours (Mayer et al.
hossei Atranorin - Lecanoric acid - Usnic
acid + Sekikaic acid + Salanizic acid - Terpenoids + Tannins + Saponins - Flavonoids - Steroids - Table 2: Antifungal activity of solvent extracts of R.
And still others--ephedra, usnic
acid, kava--can be dangerous.
acid does this by preventing photosynthesis through a key enzyme involved in pigment biosynthesis," Nanayakkara says.
The active ingredients in Usnea are Usnic
and Barbatic acids, two acids that are soluble in alcohol, but not in water.
Some authors believe that epiphytic lichens protect the trees they grow on, for they are at less risk from wood-rotting fungi because the lichens produce a series of specific acids, such as usnic
acid and pulvinic acid, which show antibiotic activity against wood-destroying fungi.
The research collaboration will assess the ability of various dietary supplements, including black cohosh, green tea, ginko biloba, kava, usnic
acid and potentially others, to affect various drug transporters.
acid inhibits breast tumor angiogenesis and growth by suppressing VEGFR2-mediated AKT and ERK1/2 signaling pathways.
Thallus Pd+ red, K+ yellow, contains fumarprotocetraric and usnic
acid it contains is a potent antibiotic and antifungal agent.