Protolichesterinic acid is an aliphatic [gamma]-lactone with a methylene group on the [alpha]-carbon, consisting of two enantiomers: (+)-protolichesterinic acid 1 could be found in Cetraria islandica (Huneck and Yoshimura 1996) and Flavocetraria cucullata (Nguyen et al.
Lichesterinic acid 3 isolated from Cetraria islandica has a significant inhibitory activity on the growth of Trypanosoma brucei with an MIC value of 6.
The lichen Cetraria islandica contains (+)-methyl protolichesterinate 4 as recorded by Huneck and Yoshimura (1996).
3-Ethyl-2,7-dihydroxynaphthazarin 13 and islandoquinone 14a-d are naphthoquinones, co-isolated from a variant of Cetraria islandica, namely Cetraria islandica var.
64 [micro]g/g dry weight in Flavocetraria nivalis, Cetraria islandica and Cetrariella delisei, respectively (Czeczuga and Jacobsen 1993; Czeczuga and Kristinsson 1992).
R]) and UV spectra (190-400 nm) of the main peaks with those of reference substances previously isolated from lichens confirmed that the methanol extract of Cetraria islandica contains the depsidone fumarprotocetraric acid ([t.
2014), which found both fumarprotocetraric and protocetraric acid to be present in Cetraria islandica.
2009), we evaluated the cytotoxic effects of Cetraria islandica and Vulpicida canadensis on two human cancer cell lines (HepG2 and MCF-7).
For the first time, the neuroprotective activities of methanol extracts of Cetraria islandica and Vulpicida canadensis have been investigated, with respect to their antioxidant actions, in a model of OS in nervous system-like cells (astrocyte model); such a model was chosen due to the increasingly acknowledged importance of glial cells in physiological and pathological diseases (Colangelo et al.
Ingolfsdottir K, Jurcic K, Wagner H (1998) Immunomodulating polysaccharides from aquous extracts of Cetraria islandica (Iceland moss).
Olafsdottir ES, Ingolfsdottir K, Barsett H, Paulsen BS, Jurcic K, Wagner H (1999a) Immunologically active (1[right arrow]3)(1[right arrow]4)-[beta]-D-glucan from Cetraria islandica.