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Amanita Smithiana
''Amanita smithiana'', also known as Smith's amanita, is a species of agaric found on soil in coniferous (''Abies'', ''Tsuga'', ''Pseudotsuga'') and broadleaved (''Alnus'', ''Quercus'') woodland in the Pacific Northwest of North America. It fruits in August and September. Taxonomy ''Amanita smithiana'' was described by Dutch mycologist Cornelis Bas in 1969. The specific epithet honors mycologist Alexander H. Smith, who collected the type specimens from Washington in 1941. It belongs in the subgenus ''Lepidella''. Description The cap has a diameter of and is white and scaled with remnants of the universal veil. The stipe is long by thick, white and similarly scaled, with a ring. Spores are ellipsoid to elongated, amyloid, and measure 11–12.5 by 7–8 µm. Toxicity It is responsible for poisonings in the Pacific Northwest when mistaken for the edible and sought after ''Tricholoma murrillianum''. It causes initial gastrointestinal symptoms that manifest 1 to 12 hour ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cornelis Bas
Dr. Cornelis (Kees) Bas (1928 – February 10, 2013) was a Dutch mycologist. Dr. Bas was born in Rotterdam and graduated in Biology at Leiden University in 1954. In 1953, he began working at the National Herbarium of the Netherlands, as curator for the fungi A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from ..., in particular, the Agaricales. Early in his career he played an important role in modernizing the collections of Dutch and European higher fungi. He died on February 10, 2013. References 1928 births 2013 deaths Dutch mycologists Leiden University alumni Scientists from Rotterdam {{Netherlands-scientist-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stipe (mycology)
In mycology, a stipe () is the stem or stalk-like feature supporting the cap of a mushroom. Like all tissues of the mushroom other than the hymenium, the stipe is composed of sterile hyphal tissue. In many instances, however, the fertile hymenium extends down the stipe some distance. Fungi that have stipes are said to be stipitate. The evolutionary benefit of a stipe is generally considered to be in mediating spore dispersal. An elevated mushroom will more easily release its spores into wind currents or onto passing animals. Nevertheless, many mushrooms do not have stipes, including cup fungi, puffballs, earthstars, some polypores, jelly fungi, ergots, and smuts. It is often the case that features of the stipe are required to make a positive identification of a mushroom. Such distinguishing characters include: # the texture of the stipe (fibrous, brittle, chalky, leathery, firm, etc.) # whether it has remains of a partial veil (such as an annulus or cortina) or universal ve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amanita Thiersii
''Saproamanita thiersii'' (formerly ''Amanita thiersii''), commonly called Thiers' lepidella, is a North-American saprotrophic basidiomycete fungus in the genus ''Saproamanita''. It is a white mushroom originally described from Texas but today found in ten states of North America. It was named after Harry Delbert Thiers. The cap of this small mushroom is white and convex, measuring and covered by volval remnants. It is sticky to the touch when wet. The gills are variable in length and number and are densely packed in some specimens and widely spaced in others. They are not attached to the stipe, which is long and about thick, with a white ring. The spores measure 7.8–9.8 by 7.3–9.0 µm and are roughly spherical in shape. The spore print is white. The mushroom grows in lawns, pastures and prairies. It is a saprotroph, living on decaying plant material, and not mycorrhizal as is the case with ''Amanita'' species. Previously it was placed in ''Amanita'', but in 20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amanita Sphaerobulbosa
''Amanita sphaerobulbosa'', commonly known as the Asian abrupt-bulbed Lepidella, is a species of agaric fungus in the family Amanitaceae. First described by mycologist Tsuguo Hongo in 1969, it is found in Southern Asia. The species was formerly consider synonymous with the North American lookalike '' Amanita abrupta'', but that species has narrower spores, a persistent partial veil, and lacks the refractive contents found in the hyphae and inflated cells of ''A. sphaerobulbosa''. The fruit bodies of ''Amanita sphaerobulbosa'' are damaging to the liver; the toxicity is thought to be largely due to a rare amino acid. Although not considered as toxic as its infamous relatives the death cap and the destroying angel, ''A. sphaerobulbosa'' is blamed for the deaths of two Japanese women in 1978. Poisoning symptoms included the abrupt appearance of violent vomiting, diarrhea and dehydration after a delay of 10–20 hours. Habitat and distribution The mushroom has been co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nephrotoxicity
Nephrotoxicity is toxicity in the kidneys. It is a poisonous effect of some substances, both toxic chemicals and medications, on kidney function. There are various forms, and some drugs may affect kidney function in more than one way. Nephrotoxins are substances displaying nephrotoxicity. Nephrotoxicity should not be confused with some medications predominantly excreted by the kidneys needing their dose adjusted for the decreased kidney function (e.g., heparin, lithium). Types of toxicity Cardiovascular * General: diuretics, β-blockers, vasodilator agents * Local: ACE inhibitors, ciclosporin, tacrolimus. Direct tubular effect * Proximal convoluted tubule: Aminoglycoside antibiotics (e.g., gentamicin), amphotericin B, cisplatin, radiocontrast media, immunoglobulins, mannitol * Distal tubule: NSAIDs (e.g. aspirin, ibuprofen, diclofenac), ACE inhibitors, ciclosporin, lithium salts, cyclophosphamide, amphotericin B * Tubular obstruction: sulphonamides, methotrexate, acicl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemodialysis
Hemodialysis, also spelled haemodialysis, or simply dialysis, is a process of purifying the blood of a person whose kidneys are not working normally. This type of dialysis achieves the extracorporeal removal of waste products such as creatinine and urea and free water from the blood when the kidneys are in a state of kidney failure. Hemodialysis is one of three renal replacement therapies (the other two being kidney transplant and peritoneal dialysis). An alternative method for extracorporeal separation of blood components such as plasma or cells is apheresis. Hemodialysis can be an outpatient or inpatient therapy. Routine hemodialysis is conducted in a dialysis outpatient facility, either a purpose-built room in a hospital or a dedicated, stand-alone clinic. Less frequently hemodialysis is done at home. Dialysis treatments in a clinic are initiated and managed by specialized staff made up of nurses and technicians; dialysis treatments at home can be self-initiated and managed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nephritis
Nephritis is inflammation of the kidneys and may involve the glomeruli, tubules, or interstitial tissue surrounding the glomeruli and tubules. It is one of several different types of nephropathy. Types * Glomerulonephritis is inflammation of the glomeruli. Glomerulonephritis is often implied when using the term "nephritis" without qualification. * Interstitial nephritis (or tubulo-interstitial nephritis) is inflammation of the spaces between renal tubules. Causes Nephritis is often caused by infections, and toxins, but is most commonly caused by autoimmune disorders that affect the major organs like kidneys. * Pyelonephritis is inflammation that results from a urinary tract infection that reaches the renal pelvis of the kidney. * Lupus nephritis is inflammation of the kidney caused by systemic lupus erythematosus (SLE), a disease of the immune system. * Athletic nephritis is nephritis resulting from strenuous exercise. Bloody urine after strenuous exercise may also result from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tricholoma Murrillianum
''Tricholoma murrillianum'' is a gilled mushroom found west of the Rocky Mountains in North America growing in coniferous woodland. This ectomycorrhizal fungus is an edible species that exists in a symbiotic relationship with various species of conifer as well as tan oak and madrone. It belongs to the genus ''Tricholoma'' in the matsutake species complex, which includes the closely related East Asian songi or matsutake as well as the American matsutake ('' T. magnivelare'') and Mexican matsutake (''T. mesoamericanum''). ''T. murrillianum'' is also known as the ponderosa mushroom, pine mushroom, and Western matsutake. Edibility Matsutake mushrooms (including ''T. murrillianum'') are choice edibles with high desirability, especially in Asian markets. They are prized for their distinctive spicy odor and flavor and firm, meaty texture. Serious poisonings have occurred due to confusion with poisonous look-alikes, most notably ''Amanita smithiana''. Harvest As Japanese production ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edible Mushroom
Edible mushrooms are the fleshy and edible fruit bodies of several species of macrofungi (fungi which bear fruiting structures that are large enough to be seen with the naked eye). They can appear either below ground (hypogeous) or above ground (epigeous) where they may be picked by hand. Edibility may be defined by criteria that include absence of poisonous effects on humans and desirable taste and aroma. Edible mushrooms are consumed for their nutritional and culinary value. Mushrooms, especially dried shiitake, are sources of umami flavor. Edible mushrooms include many fungal species that are either harvested wild or cultivated. Easily cultivated and common wild mushrooms are often available in markets, and those that are more difficult to obtain (such as the prized truffle, matsutake, and morel) may be collected on a smaller scale by private gatherers. Some preparations may render certain poisonous mushrooms fit for consumption. Before assuming that any wild mushroom is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mushroom Poisoning
Mushroom poisoning is poisoning resulting from the ingestion of mushrooms that contain toxic substances. Its symptoms can vary from slight gastrointestinal discomfort to death in about 10 days. Mushroom toxins are secondary metabolites produced by the fungus. Mushroom poisoning is usually the result of ingestion of wild mushrooms after misidentification of a toxic mushroom as an edible species. The most common reason for this misidentification is a close resemblance in terms of color and general morphology of the toxic mushrooms species with edible species. To prevent mushroom poisoning, mushroom gatherers familiarize themselves with the mushrooms they intend to collect, as well as with any similar-looking toxic species. The safety of eating wild mushrooms may depend on methods of preparation for cooking. Signs and symptoms Poisonous mushrooms contain a variety of different toxins that can differ markedly in toxicity. Symptoms of mushroom poisoning may vary from gastric upset t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Micrometre
The micrometre ( international spelling as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American spelling), also commonly known as a micron, is a unit of length in the International System of Units (SI) equalling (SI standard prefix "micro-" = ); that is, one millionth of a metre (or one thousandth of a millimetre, , or about ). The nearest smaller common SI unit is the nanometre, equivalent to one thousandth of a micrometre, one millionth of a millimetre or one billionth of a metre (). The micrometre is a common unit of measurement for wavelengths of infrared radiation as well as sizes of biological cells and bacteria, and for grading wool by the diameter of the fibres. The width of a single human hair ranges from approximately 20 to . The longest human chromosome, chromosome 1, is approximately in length. Examples Between 1 μm and 10 μm: * 1–10 μm – length of a typical bacterium * 3–8 μm – width of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amyloid (mycology)
In mycology a tissue or feature is said to be amyloid if it has a positive amyloid reaction when subjected to a crude chemical test using iodine as an ingredient of either Melzer's reagent or Lugol's solution, producing a blue to blue-black staining. The term "amyloid" is derived from the Latin ''amyloideus'' ("starch-like"). It refers to the fact that starch gives a similar reaction, also called an amyloid reaction. The test can be on microscopic features, such as spore walls or hyphal walls, or the apical apparatus or entire ascus wall of an ascus, or be a macroscopic reaction on tissue where a drop of the reagent is applied. Negative reactions, called inamyloid or nonamyloid, are for structures that remain pale yellow-brown or clear. A reaction producing a deep reddish to reddish-brown staining is either termed a dextrinoid reaction (pseudoamyloid is a synonym) or a hemiamyloid reaction. Melzer's reagent reactions Hemiamyloidity Hemiamyloidity in mycology refers to a special ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
