Biomaterial Database

[Studies of the mucopolysaccharid metabolism in the juvenile angiofibroma (author's transl)]. 1977

K Küttner, and D Katenkamp, and D Stiller

The mucopolysaccharide content of juvenile angiofibromas is investigated using histochemical and ultrahistochemical methods (histochemical in ten cases, ultrahistochemical in four cases). The investigations result in typical histochemical features and show the localization of acid mucopolysaccharides at electronmicroscopical level. The endothelium of the vessels exhibits a strong PAS-reaction and also shows acid groups at the cell surfaces. The interstitial tissue demonstrates neutral perjodatreactive substances as well as acid mucopolysaccharides. The latter substances mainly reacted in perifibrillar position. Electronmicroscopically the perjodreactive material was localized in the cytoplasma of typical fibroblasts and their modulations resembling histiocytes. The acid groups of carboxylated and sulfated mucopolysaccharides of the intercellular substance could be determined as hyaluronic acides and chondroitinsulfates (Chondroitin-4 and Chondroitin-6 sulfate) using the critical-electrolyte-concentration method after Scott and Dorling. Ultrastructurally these acid groups are localized as cell coat covering the fibroblasts and between the collagen fibrils. This histochemical investigation also supports the thesis of an organoid growth pattern of juvenile angiofibroma.

UI	MeSH Term	Description	Entries
D008854	Microscopy, Electron	Microscopy using an electron beam, instead of light, to visualize the sample, thereby allowing much greater magnification. The interactions of ELECTRONS with specimens are used to provide information about the fine structure of that specimen. In TRANSMISSION ELECTRON MICROSCOPY the reactions of the electrons that are transmitted through the specimen are imaged. In SCANNING ELECTRON MICROSCOPY an electron beam falls at a non-normal angle on the specimen and the image is derived from the reactions occurring above the plane of the specimen.	Electron Microscopy
D009303	Nasopharyngeal Neoplasms	Tumors or cancer of the NASOPHARYNX.	Cancer of Nasopharynx,Nasopharyngeal Cancer,Cancer of the Nasopharynx,Nasopharynx Cancer,Nasopharynx Neoplasms,Neoplasms, Nasopharyngeal,Cancer, Nasopharyngeal,Cancer, Nasopharynx,Cancers, Nasopharyngeal,Cancers, Nasopharynx,Nasopharyngeal Cancers,Nasopharyngeal Neoplasm,Nasopharynx Cancers,Nasopharynx Neoplasm,Neoplasm, Nasopharyngeal,Neoplasm, Nasopharynx,Neoplasms, Nasopharynx
D006025	Glycosaminoglycans	Heteropolysaccharides which contain an N-acetylated hexosamine in a characteristic repeating disaccharide unit. The repeating structure of each disaccharide involves alternate 1,4- and 1,3-linkages consisting of either N-acetylglucosamine (see ACETYLGLUCOSAMINE) or N-acetylgalactosamine (see ACETYLGALACTOSAMINE).	Glycosaminoglycan,Mucopolysaccharides
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000293	Adolescent	A person 13 to 18 years of age.	Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults
D018219	Histiocytoma, Benign Fibrous	A benign tumor composed, wholly or in part, of cells with the morphologic characteristics of HISTIOCYTES and with various fibroblastic components. Fibrous histiocytomas can occur anywhere in the body. When they occur in the skin, they are called dermatofibromas or sclerosing hemangiomas. (From DeVita Jr et al., Cancer: Principles & Practice of Oncology, 5th ed, p1747)	Dermatofibroma,Hemangioma, Sclerosing,Histiocytoma, Cutaneous,Histiocytoma, Fibrous,Angioma, Sclerosing,Benign Fibrous Histiocytoma,Angiomas, Sclerosing,Benign Fibrous Histiocytomas,Cutaneous Histiocytoma,Cutaneous Histiocytomas,Dermatofibromas,Fibrous Histiocytoma,Fibrous Histiocytoma, Benign,Fibrous Histiocytomas,Fibrous Histiocytomas, Benign,Hemangiomas, Sclerosing,Histiocytomas, Benign Fibrous,Histiocytomas, Cutaneous,Histiocytomas, Fibrous,Sclerosing Angioma,Sclerosing Angiomas,Sclerosing Hemangioma,Sclerosing Hemangiomas