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Sappinia Pedata
''Sappinia pedata'' is a free living amoeboid organism, first described by Pierre Augustin Dangeard in 1896. It belongs to the genus ''Sappinia'' within the Thecamoebida clade of Amoebozoa and is characterized by its unique monopodial locomotion and cell surface morphology. ''S. pedata'' has been found in various habitats worldwide, mostly on herbivore dung, decaying plant matter, and soil. The species has gained attention due to its potential medical relevance and has been the subject of most recent and emerging studies in Protistology and Eukaryotic Microbiology as a whole. Etymology The name "''Sappinia''" was named after the late Mister Sappin-Trouffy, a mycologist at the Paris Academy of Sciences while the Latin word "''pedata''" means foot-like. Phylogeny ''Sappinia pedata'' is a discosean amoebozoan that forms a highly supported clade with its sister species '' Sappinia diploidea'', and the newly described species ''Sappinia platani'', all of which are closely related ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pierre Augustin Dangeard
Pierre Clement Augustin Dangeard (23 November 1862, Ségrie – 10 November 1947, Ségrie) was a botany, botanist and mycology, mycologist known for his investigations of sexual reproduction in fungi. He was the father of botanist Pierre Dangeard (1895–1970) and geologist Louis Dangeard (1898–1987). Beginning in 1883, he worked as a ''préparateur'' to the faculty at University of Caen, Caen, earning his doctorate in 1886. Following graduation, he served as chief of ''travaux de botanique''. In 1891 he was appointed associate professor of botany at the University of Poitiers, later relocating to Paris as a lecturer at the faculty of sciences. In 1921 he attained the title of professor in Paris. In 1887 he founded the scientific journal ''Le Botaniste''. He was the member of several learned societies, such as the Académie des sciences (1917), the Société botanique de France (president 1914–18) and the Société mycologique de France. He was the binomial authority, circums ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amoebozoa
Amoebozoa is a major Taxonomy (biology), taxonomic group containing about 2,400 described species of Amoeba, amoeboid protists, often possessing blunt, fingerlike, Pseudopod#Morphology, lobose pseudopods and tubular mitochondrial cristae. In traditional classification schemes, Amoebozoa is usually ranked as a phylum within either the kingdom (biology), kingdom Protista or the kingdom Protozoa. In the classification favored by the International Society of Protistologists, it is retained as an unranked "supergroup (biology), supergroup" within Eukaryota. Molecular genetics, Molecular genetic analysis supports Amoebozoa as a monophyletic clade. Modern studies of eukaryotic phylogenetic trees identify it as the sister group to Opisthokonta, another major clade which contains both fungi and animals as well as several other clades comprising some 300 species of unicellular eukaryotes. Amoebozoa and Opisthokonta are sometimes grouped together in a high-level taxon, named Amorphea. Amoeboz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protistology
Protistology is a scientific discipline devoted to the study of protists, a highly diverse group of eukaryotic organisms. All eukaryotes apart from animals, plants and fungi are considered protists. Its field of study therefore overlaps with the more traditional disciplines of phycology, mycology, and protozoology, just as protists embrace mostly unicellular organisms described as algae, some organisms regarded previously as primitive fungi, and protozoa ("animal" motile protists lacking chloroplasts). They are a paraphyletic group with very diverse morphologies and lifestyles. Their sizes range from unicellular picoeukaryotes only a few micrometres in diameter to multicellular marine algae several metres long. History The history of the study of protists has its origins in the 17th century. Since the beginning, the study of protists has been intimately linked to developments in microscopy, which have allowed important advances in the understanding of these organisms due to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sappinia Diploidea
''Sappinia diploidea'' is a free-living amoeba species. Background ''Sappinia'' can be found worldwide. It usually occurs in elk and buffalo feces, places where farm animals are known to eat, soil containing rotting plants, and fresh water sources. Clinical significance It is capable of causing infectious disease in humans. Symptoms of ''Sappinia'' infection Symptoms of a Sappinia infection include headache, photophobia, nausea or upset stomach, vomiting, blurred vision, and loss of consciousness Unconsciousness is a state in which a living individual exhibits a complete, or near-complete, inability to maintain an awareness of self and environment or to respond to any human or environmental stimulus. Unconsciousness may occur as the re .... A scan of the one, infected patient’s brain also revealed a 2-centimeter tumor-like mass on the back left section of his brain. Treatment Treatment for the one identified case of Sappinia infection included the removal of a tumor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Granulomatous Amoebic Encephalitis
Granulomatous amoebic encephalitis (GAE) is a rare, often fatal, subacute-to-chronic central nervous system disease caused by certain species of free-living amoebae of the genera ''Acanthamoeba'', ''Balamuthia mandrillaris, Balamuthia'' and ''Sappinia''. The term is most commonly used with ''Acanthamoeba''. In more modern references, the term "balamuthia amoebic encephalitis" (BAE) is commonly used when ''Balamuthia mandrillaris'' is the cause. Similarly, Sappinia amoebic encephalitis (SAE) is the name for amoebic encephalitis caused by species of ''Sappinia''. Symptoms and signs GAE starts slowly, with symptoms like headache, nausea, dizziness, irritability and a low-grade fever. The CNS symptoms depend on the part of the brain that is infected. Changes in behavior are an important sign. Other CNS signs may include seizures, focal neurologic signs, diplopia (double vision), cranial nerve palsies, ataxia, confusion, and personality changes. Some of the symptoms may mimic glioma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glycocalyx
The glycocalyx (: glycocalyces or glycocalyxes), also known as the pericellular matrix and cell coat, is a layer of glycoproteins and glycolipids which surround the cell membranes of bacteria, epithelial cells, and other cells. Animal epithelial cells have a fuzz-like coating on the external surface of their plasma membranes. This viscous coating is the glycocalyx that consists of several carbohydrate moieties of membrane glycolipids and glycoproteins, which serve as backbone molecules for support. Generally, the carbohydrate portion of the glycolipids found on the surface of plasma membranes helps these molecules contribute to cell–cell recognition, communication, and intercellular adhesion. The glycocalyx is a type of identifier that the body uses to distinguish between its own healthy cells and transplanted tissues, diseased cells, or invading organisms. Included in the glycocalyx are cell-adhesion molecules that enable cells to adhere to each other and guide the mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sappinia Pedata
''Sappinia pedata'' is a free living amoeboid organism, first described by Pierre Augustin Dangeard in 1896. It belongs to the genus ''Sappinia'' within the Thecamoebida clade of Amoebozoa and is characterized by its unique monopodial locomotion and cell surface morphology. ''S. pedata'' has been found in various habitats worldwide, mostly on herbivore dung, decaying plant matter, and soil. The species has gained attention due to its potential medical relevance and has been the subject of most recent and emerging studies in Protistology and Eukaryotic Microbiology as a whole. Etymology The name "''Sappinia''" was named after the late Mister Sappin-Trouffy, a mycologist at the Paris Academy of Sciences while the Latin word "''pedata''" means foot-like. Phylogeny ''Sappinia pedata'' is a discosean amoebozoan that forms a highly supported clade with its sister species '' Sappinia diploidea'', and the newly described species ''Sappinia platani'', all of which are closely related ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protosteliales
''Protostelium'' is a genus of protosteloid amoebozoans, i.e., amoebae capable of forming simple fruiting bodies composed of a stalk and a ball of spores. It contains numerous species, including '' P. aurantium'', which was initially classified in a different genus ''Planoprotostelium''. Phylogenetic analyses revealed that ''Planoprotostelium'' branches from within the genus ''Protostelium'', making them synonyms. The genus is placed in the family Protosteliidae within the monotypic order Protosteliida, which is part of a larger group of amoebozoans known as Variosea. Classification Many species from the genus ''Protostelium'' have been transferred over time to other protosteloid genera. The following species remain: * ''Protostelium apiculatum'' * ''Protostelium aurantium'' (=''Planoprotostelium aurantium'' ) * ''Protostelium mycophaga'' * ''Protostelium nocturnum'' * ''Protostelium okumukumu ''Protostelium okumukumu'' is a species of ''Protostelium'' found in Hawaii and N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neoplasm
A neoplasm () is a type of abnormal and excessive growth of tissue. The process that occurs to form or produce a neoplasm is called neoplasia. The growth of a neoplasm is uncoordinated with that of the normal surrounding tissue, and persists in growing abnormally, even if the original trigger is removed. This abnormal growth usually forms a mass, which may be called a tumour or tumor.'' ICD-10 classifies neoplasms into four main groups: benign neoplasms, in situ neoplasms, malignant neoplasms, and neoplasms of uncertain or unknown behavior. Malignant neoplasms are also simply known as cancers and are the focus of oncology. Prior to the abnormal growth of tissue, such as neoplasia, cells often undergo an abnormal pattern of growth, such as metaplasia or dysplasia. However, metaplasia or dysplasia does not always progress to neoplasia and can occur in other conditions as well. The word neoplasm is from Ancient Greek 'new' and 'formation, creation'. Types A neoplasm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Discosea
Discosea is a class of Amoebozoa, consisting of naked amoebae with a flattened, discoid body shape. Members of the group do not produce tubular or subcylindrical pseudopodia, like amoebae of the class Tubulinea. When a discosean is in motion, a transparent layer called ''hyaloplasm'' forms at the leading edge of the cell (see lamellipodium). In some discoseans, short "subpseudopodia" may be extended from this hyaloplasm, but the granular contents of the cell do not flow into these, as in true pseudopodia. Discosean amoebae lack hard shells, but some, like ''Cochliopodium'' and '' Korotnevella'' secrete intricate organic scales which may cover the upper (dorsal) surface of the cell. No species have flagella or flagellated stages of life. The composition of Discosea is similar to that of the class Flabellinea, proposed by Alexey Smirnov and his collaborators in 2005. However, Discosea is a more comprehensive taxon, including several groups not included in Flabellinea. In 2011, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amoebozoa Species
Amoebozoa is a major taxonomic group containing about 2,400 described species of amoeboid protists, often possessing blunt, fingerlike, lobose pseudopods and tubular mitochondrial cristae. In traditional classification schemes, Amoebozoa is usually ranked as a phylum within either the kingdom Protista or the kingdom Protozoa. In the classification favored by the International Society of Protistologists, it is retained as an unranked " supergroup" within Eukaryota. Molecular genetic analysis supports Amoebozoa as a monophyletic clade. Modern studies of eukaryotic phylogenetic trees identify it as the sister group to Opisthokonta, another major clade which contains both fungi and animals as well as several other clades comprising some 300 species of unicellular eukaryotes. Amoebozoa and Opisthokonta are sometimes grouped together in a high-level taxon, named Amorphea. Amoebozoa includes many of the best-known amoeboid organisms, such as ''Chaos'', ''Entamoeba'', ''Pelomyxa'' and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
