JJH Katalog - Lichenological literature

35461

Vänskä H. (1985): Squamarina poeltii, a new lichen species from Novaya Zemlya - Annales Botanici Fennici, 22: 31–35

Squamarina (sect. Petroplaca) poeltii Vänskä, sp. nova (lichen-forming fungi, Lecanorales) is described from Novaya Zemlya, U.S.S.R. Usnic acid and traces of unidentified fatty acids are reported as its chemical constituents. Key words: Squamarina, Petroplaca, Lecanorales, lichen, taxonomy, usnic acid, U.S.S.R. Read more...

35462

Galanty A., Koczurkiewicz P., Wnuk D., Paw M., Karnas E., Podolak I., Wegrzyn M., Borusiewicz M., Madeja Z., Czyz J. & Michalik M. (2017): Usnic acid and atranorin exert selective cytostatic and anti-invasive effects on human prostate and melanoma cancer cells - Toxicol In Vitro, 40: 161-169

OBJECTIVES AND METHODS: Lichens are an interesting source of potential anti-tumor compounds, among which usnic acid and atranorin seem to be the most promising, but their impact on invasive potential of tumor cells has not yet been comprehensively addressed. The aim of the study was focused on the impact of the two lichen metabolites, on the viability (by Trypan blue test and fluoresceine diacetate and ethidium bromide assay), proliferation (cell counting in a Burker's chamber), apoptosis (flow cytometry … Read more...

35463

Katiyar D., Bansal P., Kumar A. & Prakash S. (2022): Ramalin: A Multi-Mechanistic Lichen Metabolite of Pharmacological Importance - Current Bioactive Compounds, 19: e240322202584

Ramalin (γ-glutamyl-N'-(2-hydroxyphenyl) hydrazide), a nitrogen- containing lichen secondary metabolite, was isolated from Ramalina terebrata, an Antarctic lichen. Since then, it has attracted several researchers, thus leading to various research investigations exploring the pharmacological potential of Ramalin. The current review shall be beneficial for future researchers interested in working on Ramalin because it summarizes all the relevant publications starting from its first-time isolation … Read more...

35464

Mohammadi M., Bagheri L., Badreldin A., Fatehi P., Pakzad L., Suntres Z. & van Wijnen A.J. (2022): Biological Effects of Gyrophoric Acid and Other Lichen Derived Metabolites, on Cell Proliferation, Apoptosis and Cell Signaling pathways - Chem Biol Interact, 351: 109768

Secondary metabolites from fungi, algae and lichens have remarkable biological activities as antibiotics, fungicides, antiviral drugs, and cancer therapeutics. This review focuses on the lichen-derived metabolite gyrophoric acid and other select secondary metabolites (e.g., usnic acid, salazinic acid, physodic acid, vulpinic acid ceratinalone, flavicansone, ramalin, physciosporin, tumidulin, atranorin, parmosidone) that modulate a number of cellular pathways relevant to several biomedical diseases … Read more...

35465

Nunes P.S., Rabelo A.S., Souza J.C., Santana B.V., da Silva T.M., Serafini M.R., Dos Passos Menezes P., Dos Santos Lima B., Cardoso J.C., Alves J.C., Frank L.A., Guterres S.S., Pohlmann A.R., Pinheiro M.S., de Albuquerque R.L.J. & Araujo A.A. (2016): Gelatin-based membrane containing usnic acid-loaded liposome improves dermal burn healing in a porcine model - Int J Pharm, 513(1-2): 473-482

There are a range of products available which claim to accelerate the healing of burns; these include topical agents, interactive dressings and biomembranes. The aim of this study was to assess the effect of a gelatin-based membrane containing usnic acid/liposomes on the healing of burns in comparison to silver sulfadiazine ointment and duoDerme((R)) dressing, as well as examining its quantification by high performance liquid chromatography. The quantification of the usnic acid/liposomes was examined … Read more...

35466

Palacios-Moreno J., Rubio C., Quilhot W., Cavieres M.F., de la Pena E., Quinones N.V., Diaz H., Carrion F., Henriquez-Roldan C.F. & Weinstein-Oppenheimer C.R. (2019): Epanorin, a lichen secondary metabolite, inhibits proliferation of MCF-7 breast cancer cells - Biol Res, 52: 55

BACKGROUND: Epanorin (EP) is a secondary metabolite of the Acarospora lichenic species. EP has been found in lichenic extracts with antimicrobial activity, and UV-absorption properties have been described for closely related molecules; however, its antiproliferative activity in cancer cells has not yet been explored. It has been hypothesized that EP inhibits cancer cell growth. MCF-7 breast cancer cells, normal fibroblasts, and the non-transformed HEK-293 cell line were exposed to increasing concentrations … Read more...

35467

Suh S.-S., Kim T.K., Kim J.E., Hong J.-M., Nguyen T.T., Han S.J., Youn U.J., Yim J.H. & Kim I.-C. (2017): Anticancer Activity of Ramalin, a Secondary Metabolite from the Antarctic Lichen Ramalina terebrata, against Colorectal Cancer Cells - Molecules, 22: 1361

Colorectal cancer is a leading cause of death worldwide and occurs through the highly complex coordination of multiple cellular pathways, resulting in carcinogenesis. Recent studies have increasingly revealed that constituents of lichen extracts exhibit potent pharmaceutical activities, including anticancer activity against various cancer cells, making them promising candidates for new anticancer therapeutic drugs. The main objective of this study was to evaluate the anticancer capacities of ramalin, … Read more...

35468

Bellia G. & Pieroni A. (2015): Isolated, but transnational: the glocal nature of Waldensian ethnobotany, Western Alps, NW Italy - J Ethnobiol Ethnomed, 11: 37

Background: An ethnobotanical field study on the traditional uses of wild plants for food as well as medicinal and veterinary plants was conducted in four Waldensian valleys (Chisone, Germanasca, Angrogna, and Pellice) in the Western Alps, Piedmont, NW Italy. Waldensians represent a religious Protestant Christian minority that originated in France and spread around 1,170 AD to the Italian side of Western Alps, where, although persecuted for centuries, approximately 20,000 believers still survive … Read more...

35469

Timdal E. & Gjerlaug H.C. (2023): DNA barcodes reveal unrecognized species diversity in Peltigera sect. Peltigera in Norway, including the new species P. jonii - Graphis Scripta, 35(4): 30–65

Phylogenetic analyses of 140 ITS sequences from Norwegian material of Peltigera sect. Peltigera obtained mainly by the Norwegian DNA barcode project OLICH indicate the presence of 26 putative species. Among those, we accept 18 taxonomic species, including the new species Peltigera jonii Timdal & Gjerlaug (also reported from a soil sample from Alaska), four species new to Fennoscandia (P. “fuscoponojensis”, P. islandica, P. “neorufescens” 3, and P. “neorufescens” 5), and an unnamed … Read more...

35470

Stapper N. (2023): Exkursion: Düsseldorf, Moose und Flechten zwischen Pflastersteinen, auf Bäumen, Mauern und dem Erdboden im Hofgarten - Jahrbuch des Bochumer Botanischen Vereins, 14: 129–132

[in German] Report on Excursion in Düsseldorf (North Rhine-Westphalia, Germany) Read more...