A natural dye may combat Alzheimer's

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(dye from lichens and green tea)

A red dye derived from lichens that has been used for centuries to color fabrics and food appears to reduce the abundance of small toxic protein aggregates in Alzheimer’s disease. The dye, a compound called orcein, and a related substance, called O4, bind preferentially to small amyloid aggregates that are considered to be toxic and cause neuronal dysfunction and memory impairment in Alzheimer’s disease. O4 binding to small aggregates promotes their conversion into large, mature plaques which researchers assume to be largely non-toxic for neuronal cells. A lichens is an organism that is formed by the symbiotic association of a fungus and an alga or cyanobacterium and occurs as crusty patches or bushy growths on tree trunks, bare ground, and similar environments. Lichens are now classified as a phylum of fungi (Mycophycophyta). So can a red dye from lichens and some green tea fight Alzheimer's disease? Research is ongoing. Continue to read: examiner.com

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