| concentrations of lead, cadmium, mercury and copper in mushrooms in the vicinity of a lead smelter. | the concentrations of four heavy metals in 149 samples of mushroom fruiting bodies, representing 11 species, mainly all edible, were determined by atomic absorption spectroscopy. the mushrooms were collected up to a distance of 6 km from a lead smelter in central bohemia (czechoslovakia) in operation since 1786. lead was accumulated extensively by lepiota rhacodes and lepista nuda. among other species, significant accumulation was found up to a distance of 1 km from the source. concentrations of ... | 1991 | 1925517 |
| damage in vitro to various organs and tissues by rubescenslysin from the edible mushroom amanita rubescens. | rubescenslysin, a haemolytic protein from amanita rubescens, disrupted the cytoplasmic membrane of human leucocytes which were more sensitive than erythrocytes. in the isolated hearts of rats and guinea pigs it caused systolic contracture, which was preceded by potassium outflow and sometimes by a transient positive inotropic effect. on the electrically stimulated guinea-pig left atrium it showed at first a positive, followed by a negative inotropic effect; on the spontaneously beating right atr ... | 1982 | 7135416 |
| degranulation of rat mast cells in vitro by the fungal cytolysins phallolysin, rubescenslysin and fascicularelysin. | phallolysin from amanita phalloides (vaill. ex fr.) secr., rubescenslysin from amanita rubescens (pers. ex fr.) gray, and fascicularelysin from hypholoma fasciculare (huds. ex fr.) kummer, in vitro caused disruption of mast cells in rat mesentery. the mast-cell-degranulating potency of rubenscenslysin and fascicularelysin roughly corresponded to their haemolytic potency; the dose-response curves were extremely steep and the cells were either completely destroyed or remained intact. the action of ... | 1980 | 7207644 |
| toxic effects in mouse and rat of rubescenslysin from amanita rubescens. | | 1981 | 7245221 |
| rubescenslysin and phallolysin release marker molecules from phospholipid cholesterol liposomes. | multilamellar liposomes were prepared from phospholipid, cholesterol and dicetyl phosphate and marked with potassium chromate or with glucose. they were treated with 0.5--50 haemolytic units (hu)/ml of rubescenslysin from amanita rubescens or of phallolysin from amanita phalloides. rubescenslysin caused a dose-dependent release of marker molecules from phosphatidylcholine and from sphingomyelin liposomes. a statistically significant marker leakage was caused by 0.5--1 hu/ml from liposomes prepar ... | 1981 | 7260087 |
| skin hyperemia in a habitual blusher. | blushing, a vascular skin response to emotion is difficult to investigate since subjects are not able to blush on demand in a laboratory setting. laser doppler fluxmetry measures blood flux changes noninvasively. in a 28 year old lady distressed by habitual blushing we were able to document changes in skin blood flux during blushing. forehead skin blood flux increased suddenly from 20 to 45 arbitrary units and returned to baseline values after about 3 minutes. it is the first time that emotional ... | 1997 | 9174392 |
| contents of carboxylic acids and two phenolics and antioxidant activity of dried portuguese wild edible mushrooms. | the organic acids and phenolics compositions of nine wild edible mushrooms species (suillus bellini, tricholomopsis rutilans, hygrophorus agathosmus, amanita rubescens, russula cyanoxantha, boletus edulis, tricholoma equestre, suillus luteus, and suillus granulatus) were determined by hplc-uv and hplc-dad, respectively. the antioxidant potential of these species was also assessed by using the dpph* scavenging assay. the results showed that all of the species presented a profile composed of at le ... | 2006 | 17061830 |
| mycorrhizal fungi and ectomycorrhiza associated bacteria isolated from an industrial desert soil protect pine seedlings against cd(ii) impact. | effects of mycorrhization with amanita rubescens or hebeloma sinapizans and dual inoculation with the fungi and ectomycorrhiza associated bacteria (emab) pseudomonas putida or bacillus cereus on seedling growth and accumulation of cd(ii) in pinus sylvestris were studied. both fungal and bacterial species were isolated from roots of pines growing in an industrial area polluted with high concentrations of heavy metals. during mycorrhization, a. rubescens colonized higher number of pine seedlings t ... | 2007 | 17541824 |
| validation of an electrothermal atomization atomic absorption spectrometry method for quantification of total chromium and chromium(vi) in wild mushrooms and underlying soils. | an etaas method was validated to quantify total cr and cr(vi) in mushrooms and the underlying soils. the method includes a sample pretreatment for total cr dissolution using a wet acid digestion procedure and a selective alkaline extraction for cr(vi). the limits of detection were, expressed in microg/l, 0.15 and 0.17 for total cr and cr(vi), respectively. the linearity ranges under the optimized conditions were 0.15-25.0 and 0.17-20.0 microg/l for total cr and cr(vi), respectively. the limits o ... | 2007 | 17661487 |
| correlation between the pattern volatiles and the overall aroma of wild edible mushrooms. | volatile and semivolatile components of 11 wild edible mushrooms, suillus bellini, suillus luteus, suillus granulatus, tricholomopsis rutilans, hygrophorus agathosmus, amanita rubescens, russula cyanoxantha, boletus edulis, tricholoma equestre, fistulina hepatica, and cantharellus cibarius, were determined by headspace solid-phase microextraction (hs-spme) and by liquid extraction combined with gas chromatography-mass spectrometry (gc-ms). fifty volatiles and nonvolatiles components were formall ... | 2008 | 18266318 |
| [content and bioconcentration of mercury by european blusher (amanita rubescens) from northern poland]. | total mercury content have been determined in 45 fruiting bodies of european blusher (amanita rubescens) and soil substrate collected from three spatially distant sites at the pomorskie voivodeship in 2006-2007. mercury analysis carried out was by cold-vapour atomic absorption (cv-aas) with amalgamation on golden wool. the european blusher effectively accumulated mercury and median bcf values of this element ranged from 9.5 to 24 for the caps and from 6.1 to 15 for the stipes. for the areas surv ... | 2008 | 18807911 |
| kinetic and equilibrium studies of biosorption of pb(ii) and cd(ii) from aqueous solution by macrofungus (amanita rubescens) biomass. | the biosorption characteristics of pb(ii) and cd(ii) ions from aqueous solution using the macrofungus (amanita rubescens) biomass were investigated as a function of ph, biomass dosage, contact time, and temperature. langmuir, freundlich and dubinin-radushkevich (d-r) models were applied to describe the biosorption isotherm of the metal ions by a. rubescens biomass. langmuir model fitted the equilibrium data better than the freundlich isotherm. the maximum biosorption capacity of a. rubescens for ... | 2009 | 18845395 |
| comparative study on free amino acid composition of wild edible mushroom species. | a comparative study on the amino acid composition of 11 wild edible mushroom species (suillus bellini, suillus luteus, suillus granulatus, tricholomopsis rutilans, hygrophorus agathosmus, amanita rubescens, russula cyanoxantha, boletus edulis, tricholoma equestre, fistulina hepatica, and cantharellus cibarius) was developed. to define the qualitative and quantitative profiles, a derivatization procedure with dabsyl chloride was performed, followed by hplc-uv-vis analysis. twenty free amino acids ... | 2008 | 18942845 |
| bread, baby shoes or blusher? myths about social grants and 'lazy' young mothers. | | 2009 | 19418668 |
| case series: alcohol intolerance with coprine-like syndrome after consumption of the mushroom lepiota aspera (pers.:fr.) quél., 1886 (freckled dapperling). | alcohol intolerance after consumption of wild mushrooms is a recognized phenomenon. this is best understood with coprinus atramentarius. its active component coprine blocks enzymatic ethanol degradation at the stage of acetaldehyde, which is responsible for the well-recognized symptoms. here, we report three events in five patients experiencing the same symptoms after consumption of self-collected lepiota aspera. all had mistaken l. aspera for edible mushrooms as amanita rubescens or macrolepiot ... | 2011 | 21370948 |
| gc/ms determination of ibotenic acid and muscimol in the urine of patients intoxicated with amanita pantherina. | ibotenic acid and muscimol are substances which mostly participate in psychotropic properties of amanita pantherina and amanita muscaria. they are rapidly absorbed from the gastrointestinal tract and readily excreted in urine. the poisoning with a. pantherina is in the majority of cases accidental because it can be easily mistaken for the edible species (amanita rubescens, amanita spissa and macrolepiota procera). intoxication with a. muscaria is mostly intentional for recreational purposes. pro ... | 2011 | 21751026 |
| Amatoxin and phallotoxin composition in species of the genus Amanita in Colombia: a taxonomic perspective. | Some species in the genus Amanita have a great variety of toxic secondary metabolites. They are characterized macroscopically by having a white spore print and free gills, and microscopically by the presence of a divergent hymenophoral trama. Some species of Amanita present in Colombia were chemically characterized by analyzing their toxin composition using HPLC. Samples were collected in oak (Quercus humboldtii) and pine (Pinus radiata) forests. Twelve species were recovered, Amanita fuligineod ... | 2011 | 21945592 |