| 释义 |
amyloid
am·y·loid A0271600 (ăm′ə-loid′)n.1. A starchlike substance.2. a. An insoluble, fibrous structure consisting chiefly of an aggregation of proteins arranged in beta sheets, forming extracellular deposits in organs or tissues and characteristic of certain diseases such as Alzheimer's disease and Parkinson's disease.b. The substance that makes up such a structure.adj.1. Starchlike.2. Being or related to proteinaceous amyloid: amyloid plaque.amyloid (ˈæmɪˌlɔɪd) n1. (Biochemistry) pathol a complex protein resembling starch, deposited in tissues in some degenerative diseases2. any substance resembling starchadjstarchlikeam•y•loid (ˈæm əˌlɔɪd)
n. 1. a waxy, translucent substance, composed primarily of protein fibers, that is deposited in various organs of animals in certain diseases. 2. a nonnitrogenous food consisting esp. of starch. adj. 3. of, resembling, or containing amylum. [1855–60] Thesaurus| Noun | 1. | amyloid - a non-nitrogenous food substance consisting chiefly of starch; any substance resembling starchamylum, starch - a complex carbohydrate found chiefly in seeds, fruits, tubers, roots and stem pith of plants, notably in corn, potatoes, wheat, and rice; an important foodstuff and used otherwise especially in adhesives and as fillers and stiffeners for paper and textiles | | 2. | amyloid - (pathology) a waxy translucent complex protein resembling starch that results from degeneration of tissuepathology - the branch of medical science that studies the causes and nature and effects of diseasesprotein - any of a large group of nitrogenous organic compounds that are essential constituents of living cells; consist of polymers of amino acids; essential in the diet of animals for growth and for repair of tissues; can be obtained from meat and eggs and milk and legumes; "a diet high in protein" | | Adj. | 1. | amyloid - resembling starchamylaceous, amyloidal, farinaceous, starchlikestarchy - consisting of or containing starch; "starchy foods" |
Translationsamyloid
amyloid [am´ĭ-loid] 1. resembling starch; characterized by starchlike staining properties.2. the pathologic extracellular proteinaceous substance deposited in amyloidosis; it is a waxy eosinophilic material. Amyloid deposits are composed primarily of straight, nonbranching fibrils arranged either in bundles or in a feltlike meshwork; each fibril is composed of identical polypeptide chains in stacked sheets. There are two major biochemical types of amyloid protein: amyloid light chain protein and amyloid A protein, as well as others seen less often.am·y·loid (am'i-loyd), 1. Any of a group of chemically diverse proteins that appear microscopically homogeneous but are composed of linear nonbranching aggregated fibrils arranged in sheets when seen under the electron microscope; amyloid stains dark brown with iodine, produces a characteristic green birefringence in polarized light after staining with Congo red, is metachromatic with either methyl violet (pink-red) or crystal violet (purple-red), and fluoresces yellow after thioflavine T staining. 2. The pathologic extracellular proteinaceous substance deposited in amyloidosis. There are two major types of amyloid protein: amyloid light chain protein that occurs in primary amyloidosis and amyloid, a protein that occurs in reactive systemic amyloidosis. 3. Resembling or containing starch. [amylo- + G. eidos, resemblance] amyloid (ăm′ə-loid′)n.1. A starchlike substance.2. a. An insoluble, fibrous structure consisting chiefly of an aggregation of proteins arranged in beta sheets, forming extracellular deposits in organs or tissues and characteristic of certain diseases such as Alzheimer's disease and Parkinson's disease.b. The substance that makes up such a structure.adj.1. Starchlike.2. Being or related to proteinaceous amyloid: amyloid plaque.amyloid β-fibrillosis A homogeneous, extracellular glycoprotein with a fibrillary ultrastructure, derived either from 1. The N-terminal of lambda or kappa Ig light chains–amyloid of immune origin, a 5-18 kD glycoprotein produced by a single clone of plasma cells or.2. Amyloid of unknown origin, from serum amyloid A–SAA, an acute phase protein that ↑ sharply during inflammation; all amyloids have a common molecular theme, that of the β-pleated protein sheet, demonstrable by X-ray crystallography and responsible for amyloid's Congo red staining and resistance to proteolytic digestion See Beta amyloid. Cf Alzhemier's disease.am·y·loid (am'i-loyd) 1. Any of a group of chemically diverse proteins that appears microscopically homogeneous but is composed of linear nonbranching aggregated fibrils arranged in sheets when seen under the electron microscope; it stains dark brown with iodine, produces a characteristic green color in polarized light after staining with Congo red, is metachromatic with either methyl violet (pink-red) or crystal violet (purple-red), and fluoresces yellow after thioflavine T staining; amyloid occurs characteristically as pathologic extracellular deposits (amyloidosis), especially in association with reticuloendothelial tissue; the chemical nature of the proteinaceous fibrils is dependent on the underlying disease process. 2. Resembling or containing starch. [amylo- + G. eidos, resemblance]amyloid One of a range of proteins deposited in the brain in spongiform encephalopathies such as CREUTZFELDT-JAKOB DISEASE, in other degenerative brain disorders such as ALZHEIMER'S DISEASE, and in the tissues in a wide range of long-term suppurative disorders (see AMYLOIDOSIS). It is a hard, waxy proteinaceous substance in the form of straight, rigid, non-branching fibrils, 10–15 nm in diameter that are insoluble in water and relatively resistant to breakdown by proteolytic enzymes. There is a considerable range of amyloid proteins mainly specific for the different conditions in which amyloid is deposited. From the Latin amylum , starch.AmyloidAmyloid protein resembles a starch and is deposited in tissues during the course of certain chronic diseases.Mentioned in: Amyloidosis, Cerebral Amyloid Angiopathy, Familial Mediterranean Feveram·y·loid (am'i-loyd) Any of a group of chemically diverse proteins that appears microscopically homogeneous but is composed of linear nonbranching aggregated fibrils arranged in sheets when seen under the electron microscope; occurs characteristically as pathologic extracellular deposits (amyloidosis), especially in association with reticuloendothelial tissue; the chemical nature of the proteinaceous fibrils, depends on the underlying disease process. [amylo- + G. eidos, resemblance]amyloid
Related to amyloid: Amyloid angiopathy, Amyloid precursor proteinSynonyms for amyloidnoun a non-nitrogenous food substance consisting chiefly of starchRelated Wordsnoun (pathology) a waxy translucent complex protein resembling starch that results from degeneration of tissueRelated Wordsadj resembling starchSynonyms- amylaceous
- amyloidal
- farinaceous
- starchlike
Related Words |