Biomaterial Database

Ultrastructural characteristics of collagen tissue in normal and congenitally dilated ureter. 1985

R Medel, and E M Quesada

Scanning electron microscopy is a useful method to study the organization distribution and orientation of the collagen fibers in the ureteral wall. Different collagen structural patterns have been observed in normal ureter, primary obstructive megaureter and refluxing megaureter. A pathogenic hypothesis is advanced based on the different functional characteristics of each one of these entities. Collagenous proliferation in primary obstructive megaureter and refluxing megaureter could be related to ureteric smooth muscle cell disfunction.

UI	MeSH Term	Description	Entries
D008855	Microscopy, Electron, Scanning	Microscopy in which the object is examined directly by an electron beam scanning the specimen point-by-point. The image is constructed by detecting the products of specimen interactions that are projected above the plane of the sample, such as backscattered electrons. Although SCANNING TRANSMISSION ELECTRON MICROSCOPY also scans the specimen point by point with the electron beam, the image is constructed by detecting the electrons, or their interaction products that are transmitted through the sample plane, so that is a form of TRANSMISSION ELECTRON MICROSCOPY.	Scanning Electron Microscopy,Electron Scanning Microscopy,Electron Microscopies, Scanning,Electron Microscopy, Scanning,Electron Scanning Microscopies,Microscopies, Electron Scanning,Microscopies, Scanning Electron,Microscopy, Electron Scanning,Microscopy, Scanning Electron,Scanning Electron Microscopies,Scanning Microscopies, Electron,Scanning Microscopy, Electron
D002648	Child	A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL.	Children
D003094	Collagen	A polypeptide substance comprising about one third of the total protein in mammalian organisms. It is the main constituent of SKIN; CONNECTIVE TISSUE; and the organic substance of bones (BONE AND BONES) and teeth (TOOTH).	Avicon,Avitene,Collagen Felt,Collagen Fleece,Collagenfleece,Collastat,Dermodress,Microfibril Collagen Hemostat,Pangen,Zyderm,alpha-Collagen,Collagen Hemostat, Microfibril,alpha Collagen
D003238	Connective Tissue	Tissue that supports and binds other tissues. It consists of CONNECTIVE TISSUE CELLS embedded in a large amount of EXTRACELLULAR MATRIX.	Connective Tissues,Tissue, Connective,Tissues, Connective
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
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
D014513	Ureter	One of a pair of thick-walled tubes that transports urine from the KIDNEY PELVIS to the URINARY BLADDER.	Ureters
D014517	Ureteral Obstruction	Blockage in any part of the URETER causing obstruction of urine flow from the kidney to the URINARY BLADDER. The obstruction may be congenital, acquired, unilateral, bilateral, complete, partial, acute, or chronic. Depending on the degree and duration of the obstruction, clinical features vary greatly such as HYDRONEPHROSIS and obstructive nephropathy.	Obstruction, Ureteral,Obstructions, Ureteral,Ureteral Obstructions
D014718	Vesico-Ureteral Reflux	Retrograde flow of urine from the URINARY BLADDER into the URETER. This is often due to incompetence of the vesicoureteral valve.	Primary Vesicoureteral Reflux,Secondary Vesicoureteral Reflux,Vesicoureteral Reflux Grade1,Vesicoureteral Reflux1,Vesicoureteral Reflux,Vesicoureteral Reflux 1,Grade1, Vesicoureteral Reflux,Reflux, Primary Vesicoureteral,Reflux, Secondary Vesicoureteral,Reflux, Vesico-Ureteral,Reflux, Vesicoureteral,Reflux1, Vesicoureteral,Vesico Ureteral Reflux,Vesicoureteral Reflux, Primary,Vesicoureteral Reflux, Secondary,Vesicoureteral Reflux1s