Biomaterial Database

[Ultrastructure and pathogenesis of vocal nodules on the vocal cords]. 1994

F J Cervera-Paz, and F G Dikkers

Departamento de Cirugía, Area de ORL, Universidad de Cádiz, Hospital Universitario de Puerto Real.

Controlled electron microscopy of the epithelium in voice lesions revealed: thickening and destruction of basement membrane, reduplication of the lamina densa, near absence of normal hemidesmosomes and anchoring fibrils, abundant electro-dense vesicles at the basal cell pole (discharging through the cell membrane), abundant mitochondria, euchromatin and nucleolar prominence. These histologic phenomena suggest that the basal cell layer responds to trauma to its anchorages with metabolic hyperactivity. Therefore the traumatic mechanism should be considered as damaging to the basement membrane.

UI	MeSH Term	Description	Entries
D007819	Laryngeal Edema	Abnormal accumulation of fluid in tissues of any part of the LARYNX, commonly associated with laryngeal injuries and allergic reactions.	Edema, Laryngeal,Edemas, Laryngeal,Laryngeal Edemas
D007822	Laryngeal Neoplasms	Cancers or tumors of the LARYNX or any of its parts: the GLOTTIS; EPIGLOTTIS; LARYNGEAL CARTILAGES; LARYNGEAL MUSCLES; and VOCAL CORDS.	Cancer of Larynx,Laryngeal Cancer,Larynx Neoplasms,Cancer of the Larynx,Larynx Cancer,Neoplasms, Laryngeal,Cancer, Laryngeal,Cancer, Larynx,Cancers, Laryngeal,Cancers, Larynx,Laryngeal Cancers,Laryngeal Neoplasm,Larynx Cancers,Larynx Neoplasm,Neoplasm, Laryngeal,Neoplasm, Larynx,Neoplasms, Larynx
D008297	Male		Males
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
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
D008928	Mitochondria	Semiautonomous, self-reproducing organelles that occur in the cytoplasm of all cells of most, but not all, eukaryotes. Each mitochondrion is surrounded by a double limiting membrane. The inner membrane is highly invaginated, and its projections are called cristae. Mitochondria are the sites of the reactions of oxidative phosphorylation, which result in the formation of ATP. They contain distinctive RIBOSOMES, transfer RNAs (RNA, TRANSFER); AMINO ACYL T RNA SYNTHETASES; and elongation and termination factors. Mitochondria depend upon genes within the nucleus of the cells in which they reside for many essential messenger RNAs (RNA, MESSENGER). Mitochondria are believed to have arisen from aerobic bacteria that established a symbiotic relationship with primitive protoeukaryotes. (King & Stansfield, A Dictionary of Genetics, 4th ed)	Mitochondrial Contraction,Mitochondrion,Contraction, Mitochondrial,Contractions, Mitochondrial,Mitochondrial Contractions
D002648	Child	A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL.	Children
D005260	Female		Females
D006099	Granuloma	A relatively small nodular inflammatory lesion containing grouped mononuclear phagocytes, caused by infectious and noninfectious agents.	Granulomas
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man