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Huperzia Serrata
''Huperzia serrata'', the toothed clubmoss, is a plant known as a firmoss which contains the acetylcholinesterase inhibitor huperzine A Huperzine A is a naturally occurring sesquiterpene alkaloid compound found in the firmoss ''Huperzia serrata'' and in varying quantities in other food ''Huperzia'' species, including ''H. elmeri'', ''H. carinat'', and ''H. aqualupian''. Huperz ....Xing Zu Zhu, Xiao-Yu Li, Jin Li (2004), "Recent pharmacological studies on natural products in China", ''European Journal of Pharmacology'' 500 221–223 The species is native to eastern Asia (China, Tibet, Japan, the Korean peninsula, the Russian Far East). References serrata Flora of China Flora of Eastern Asia Flora of the Russian Far East {{Lycophyte-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thunb
Carl Peter Thunberg, also known as Karl Peter von Thunberg, Carl Pehr Thunberg, or Carl Per Thunberg (11 November 1743 – 8 August 1828), was a Swedish naturalist and an "apostle" of Carl Linnaeus. After studying under Linnaeus at Uppsala University, he spent seven years travelling in southern Africa and Asia, collecting and describing many plants and animals new to European science, and observing local cultures. He has been called "the father of South African botany", "pioneer of Occidental Medicine in Japan", and the "Japanese Linnaeus". Early life Thunberg was born and grew up in Jönköping, Sweden. At the age of 18, he entered Uppsala University where he was taught by Carl Linnaeus, regarded as the "father of modern taxonomy". Thunberg graduated in 1767 after 6 years of studying. To deepen his knowledge in botany, medicine and natural history, he was encouraged by Linnaeus in 1770 to travel to Paris and Amsterdam. In Amsterdam and Leiden Thunberg met the Dutch botanis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trevis
Trevis may refer to: People Surname * Bos Trevis (1911–1984), English footballer *Derek Trevis (1942–2000), English footballer *Di Trevis (born 1947), English theatre director and actress *Floyd Trevis, American racing car constructor of the 1950s and 1960s Given name *Trevis Gipson (born 1997), American football linebacker *Trevis Jackson (born 1995), Filipino-American basketball player *Trevis Smith (born 1976), Canadian football linebacker *Trevis Simpson (born 1991), American basketball player * Trevis Turner (born 1987), American football offensive lineman Other uses *''Trevis.'', taxonomic author abbreviation of Vittore Benedetto Antonio Trevisan de Saint-Léon (1818–1897), Italian botanist *A device used in shoeing oxen, see Livestock crush#History *Treviso Bresciano (Brescian: Trevìs), comune in the province of Brescia, in Lombardy *Daihatsu Trevis, export name of the Daihatsu Mira Gino The is a kei car/city car with distinctive retro styling made by the Japan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant
Plants are predominantly photosynthetic eukaryotes of the kingdom Plantae. Historically, the plant kingdom encompassed all living things that were not animals, and included algae and fungi; however, all current definitions of Plantae exclude the fungi and some algae, as well as the prokaryotes (the archaea and bacteria). By one definition, plants form the clade Viridiplantae (Latin name for "green plants") which is sister of the Glaucophyta, and consists of the green algae and Embryophyta (land plants). The latter includes the flowering plants, conifers and other gymnosperms, ferns and their allies, hornworts, liverworts, and mosses. Most plants are multicellular organisms. Green plants obtain most of their energy from sunlight via photosynthesis by primary chloroplasts that are derived from endosymbiosis with cyanobacteria. Their chloroplasts contain chlorophylls a and b, which gives them their green color. Some plants are parasitic or mycotrophic and have lost the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Firmoss
''Huperzia'' is a genus of lycophyte plants, sometimes known as the firmosses or fir clubmosses; the ''Flora of North America'' calls them gemma fir-mosses. This genus was originally included in the related genus ''Lycopodium'', from which it differs in having undifferentiated sporangial leaves, and the sporangia not formed into apical cones. The common name ''firmoss'', used for some of the north temperate species, refers to their superficial resemblance to branches of fir (''Abies''), a conifer. , two very different circumscriptions of the genus were in use. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), ''Huperzia'' is one of three genera in the subfamily Huperzioideae of the family Lycopodiaceae. Most species in the subfamily are placed in the genus ''Phlegmariurus''. ''Huperzia'' is left with about 25 species, although not all have been formally transferred to other genera. Other sources recognize only ''Huperzia'', which then has about 340 species. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acetylcholinesterase
Acetylcholinesterase (HGNC symbol ACHE; EC 3.1.1.7; systematic name acetylcholine acetylhydrolase), also known as AChE, AChase or acetylhydrolase, is the primary cholinesterase in the body. It is an enzyme Enzymes () are proteins that act as biological catalysts by accelerating chemical reactions. The molecules upon which enzymes may act are called substrates, and the enzyme converts the substrates into different molecules known as products. A ... that catalysis, catalyzes the breakdown of acetylcholine and some other choline esters that function as neurotransmitters: : acetylcholine + H2O = choline + acetate It is found at mainly neuromuscular junctions and in chemical synapses of the cholinergic type, where its activity serves to terminate neurotransmission, synaptic transmission. It belongs to the carboxylesterase family of enzymes. It is the primary target of inhibition by organophosphorus compounds such as nerve agents and pesticides. Enzyme structure and mechani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enzyme Inhibitor
An enzyme inhibitor is a molecule that binds to an enzyme and blocks its activity. Enzymes are proteins that speed up chemical reactions necessary for life, in which substrate molecules are converted into products. An enzyme facilitates a specific chemical reaction by binding the substrate to its active site, a specialized area on the enzyme that accelerates the most difficult step of the reaction. An enzyme inhibitor stops ("inhibits") this process, either by binding to the enzyme's active site (thus preventing the substrate itself from binding) or by binding to another site on the enzyme such that the enzyme's catalysis of the reaction is blocked. Enzyme inhibitors may bind reversibly or irreversibly. Irreversible inhibitors form a chemical bond with the enzyme such that the enzyme is inhibited until the chemical bond is broken. By contrast, reversible inhibitors bind non-covalently and may spontaneously leave the enzyme, allowing the enzyme to resume its function. Reve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Huperzine A
Huperzine A is a naturally occurring sesquiterpene alkaloid compound found in the firmoss ''Huperzia serrata'' and in varying quantities in other food ''Huperzia'' species, including ''H. elmeri'', ''H. carinat'', and ''H. aqualupian''. Huperzine A has been investigated as a treatment for neurological conditions such as Alzheimer's disease, but a meta-analysis of those studies concluded that they were of poor methodological quality and the findings should be interpreted with caution. Huperzine A inhibits the breakdown of the neurotransmitter acetylcholine by the enzyme acetylcholinesterase. It is commonly available over the counter as a nutrient supplement, and is marketed as a cognitive enhancer for improving memory and concentration. Pharmacological effects Huperzine A is extracted from ''Huperzia serrata''. It is a reversible acetylcholinesterase inhibitor and NMDA receptor antagonist that crosses the blood–brain barrier. Acetylcholinesterase is an enzyme that catalyzes the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Huperzia
''Huperzia'' is a genus of Lycopodiopsida, lycophyte plants, sometimes known as the firmosses or fir clubmosses; the ''Flora of North America'' calls them gemma fir-mosses. This genus was originally included in the related genus ''Lycopodium'', from which it differs in having undifferentiated sporangial leaves, and the sporangia not formed into apical cones. The common name ''firmoss'', used for some of the north temperate species, refers to their superficial resemblance to branches of fir (''Abies''), a conifer. , two very different Circumscription (taxonomy), circumscriptions of the genus were in use. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), ''Huperzia'' is one of three genera in the subfamily Huperzioideae of the family Lycopodiaceae. Most species in the subfamily are placed in the genus ''Phlegmariurus''. ''Huperzia'' is left with about 25 species, although not all have been formally transferred to other genera. Other sources recognize only ''Huperzi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of China
The flora of China consists of a diverse range of plant species including over 39,000 vascular plants, 27,000 species of fungi and 3000 species of bryophytes.Wu, Z. Y., P. H. Raven & D. Y. Hong, eds. 2006. Flora of China. Vol. 22 (Poaceae). Science Press, Beijing, and Missouri Botanical Garden Press, St. Louis More than 30,000 plant species are native to China, representing nearly one-eighth of the world's total plant species, including thousands found nowhere else on Earth. China's land, extending over 9.6 million km, contains a variety of ecosystems and climates for plants to grow in. Some of the main climates include shores, tropical and subtropical forests, deserts, elevated plateaus and mountains. The events of the continental drift and early Paleozoic Caledonian movement also play a part in creating climatic and geographical diversity resulting in high levels of endemic vascular flora. These landscapes provide different ecosystems and climates for plants to grow in, creati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of Eastern Asia
Flora is all the plant life present in a particular region or time, generally the naturally occurring (indigenous) native plants. Sometimes bacteria and fungi are also referred to as flora, as in the terms '' gut flora'' or '' skin flora''. Etymology The word "flora" comes from the Latin name of Flora, the goddess of plants, flowers, and fertility in Roman mythology. The technical term "flora" is then derived from a metonymy of this goddess at the end of the sixteenth century. It was first used in poetry to denote the natural vegetation of an area, but soon also assumed the meaning of a work cataloguing such vegetation. Moreover, "Flora" was used to refer to the flowers of an artificial garden in the seventeenth century. The distinction between vegetation (the general appearance of a community) and flora (the taxonomic composition of a community) was first made by Jules Thurmann (1849). Prior to this, the two terms were used indiscriminately.Thurmann, J. (1849). ''Essai de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
