Results 121 to 130 of about 397,359 (338)

Tumidulin, a Lichen Secondary Metabolite, Decreases the Stemness Potential of Colorectal Cancer Cells

open access: yesMolecules, 2018
Lichens produce various unique chemicals that are used in the pharmaceutical industry. To screen for novel lichen secondary metabolites that inhibit the stemness potential of colorectal cancer cells, we tested acetone extracts of 11 lichen samples ...
Yi Yang   +11 more
doaj   +1 more source

Update on lichen planus and its clinical variants☆

open access: yesInternational Journal of Women's Dermatology, 2015
Lichen planus (LP) is an inflammatory skin condition with characteristic clinical and histopathological findings. Classic LP typically presents as pruritic, polygonal, violaceous flat-topped papules and plaques; many variants in morphology and location ...
G. Weston, Michael J. Payette
semanticscholar   +1 more source

Fractional CO2 Laser Combined With Topical Corticosteroids for Vulvar Lichen Simplex Chronicus: An Observational Study From an 8‐Year Single‐Center Experience

open access: yesLasers in Surgery and Medicine, EarlyView.
ABSTRACT Background Vulvar lichen simplex chronicus (VLSC) is a chronic inflammatory dermatosis that remains difficult to manage long term. Fractional CO2 laser (FxCO2) combined with topical corticosteroids (TCs) has emerged as a potential therapeutic strategy; however, high‐quality long‐term evidence remains limited.
Dongmei Wei   +6 more
wiley   +1 more source

Uncovering Hidden Lineages in Korean Foliicolous Lichens (Strigulaceae, Strigulales): Discovery of a New Cryptic Genus and Species

open access: yesMycobiology
Foliicolous or leaf-dwelling lichens are mostly found in (sub-)tropical rainforests; due to their sensibility to environmental changes, they may serve as biological indicators for rainforest ecosystems.
Jung-Jae Woo   +4 more
doaj   +1 more source

Symbiosis constraints: Strong mycobiont control limits nutrient response in lichens

open access: yesEcology and Evolution, 2017
Symbioses such as lichens are potentially threatened by drastic environmental changes. We used the lichen Peltigera aphthosa—a symbiosis between a fungus (mycobiont), a green alga (Coccomyxa sp.), and N2‐fixing cyanobacteria (Nostoc sp.)—as a model ...
Kristin Palmqvist   +2 more
doaj   +1 more source

Foliicolous lichens and their lichenicolous fungi collected during the Smithsonian International Cryptogamic Expedition to Guyana 1996 [PDF]

open access: yes, 1998
A total of 233 foliicolous lichen species and 18 lichenicolous fungi are reported from Guyana as a result of the Smithsonian „International Cryptogamic Expedition to Guyana“ 1996.
Lücking, Robert
core  

Rhizobiales as functional and endosymbiontic members in the lichen symbiosis of Lobaria pulmonaria L.

open access: yesFrontiers in Microbiology, 2015
Rhizobiales (Alphaproteobacteria) are well-known beneficial partners in plant-microbe interactions. Less is known about the occurrence and function of Rhizobiales in the lichen symbiosis, although it has previously been shown that Alphaproteobacteria are
A. Erlacher   +6 more
semanticscholar   +1 more source

Topical Imiquimod for Oral Cavity Leukoplakia and Dysplasia: A Scoping Review

open access: yesOtolaryngology–Head and Neck Surgery, EarlyView.
Abstract Objective Imiquimod, a toll‐like receptor 7 agonist, is currently FDA‐approved for treatment of actinic keratoses, superficial BCC, and external genital warts. It has also demonstrated promise in off‐label use in the treatment of oral cavity leukoplakia and dysplasia.
Megan K. Scharner   +3 more
wiley   +1 more source

Unraveling the Photoprotective Response of Lichenized and Free-Living Green Algae (Trebouxiophyceae, Chlorophyta) to Photochilling Stress

open access: yesFrontiers in Plant Science, 2017
Lichens and free-living terrestrial algae are widespread across many habitats and develop successfully in ecosystems where a cold winter limits survival.
Fátima Míguez   +4 more
doaj   +1 more source

Community dynamics of lignicolous lichens on standing deadwood in a 275‐year chronosequence

open access: yesOikos, EarlyView.
Dead trees provide discrete habitat patches in which patch quality changes gradually due to wood decomposition. Although in most cases these patches persist for not more than a few decades, in some ecosystems deadwood decomposition and the consequent change in habitat patch quality can be a centuries‐long process, potentially leading to dynamics of ...
Aleksi Nirhamo   +4 more
wiley   +1 more source

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