Ehlers-Danlos syndrome. A variant characterized by the deficiency of pro alpha 2 chain of type I procollagen. 1987

T Sasaki, and K Arai, and M Ono, and T Yamaguchi, and S Furuta, and Y Nagai

The clinical findings and biochemical studies are described for a 30-year-old man with Ehlers-Danlos syndrome. Type analysis of collagen produced by cultured fibroblasts revealed the lack of a detectable pro alpha 2 chain of type I procollagen. The intracellular degradation rate of newly synthesized collagen was higher than that of normal cells, resulting in the reduction of net collagen production. Clinical manifestations characterized by cardiovascular abnormalities due to decreased collagen deposition in the aortic valve and the wall of aorta, hypermobility of the joints, and hyperextensibility of the skin in this patient may be closely related to the observations described above.

UI MeSH Term Description Entries
D008297 Male Males
D010446 Peptide Fragments Partial proteins formed by partial hydrolysis of complete proteins or generated through PROTEIN ENGINEERING techniques. Peptide Fragment,Fragment, Peptide,Fragments, Peptide
D011347 Procollagen A biosynthetic precursor of collagen containing additional amino acid sequences at the amino-terminal and carboxyl-terminal ends of the polypeptide chains. Protocollagen,Procollagen Type M
D002478 Cells, Cultured Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others. Cultured Cells,Cell, Cultured,Cultured Cell
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
D004535 Ehlers-Danlos Syndrome A heterogeneous group of autosomally inherited COLLAGEN DISEASES caused by defects in the synthesis or structure of FIBRILLAR COLLAGEN. There are numerous subtypes: classical, hypermobility, vascular, and others. Common clinical features include hyperextensible skin and joints, skin fragility and reduced wound healing capability. Cutis Elastica,Ehlers Danlos Disease,Ehlers-Danlos Disease,Danlos Disease, Ehlers,Disease, Ehlers Danlos,Disease, Ehlers-Danlos,Ehlers Danlos Syndrome,Syndrome, Ehlers-Danlos
D005347 Fibroblasts Connective tissue cells which secrete an extracellular matrix rich in collagen and other macromolecules. Fibroblast
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
D012867 Skin The outer covering of the body that protects it from the environment. It is composed of the DERMIS and the EPIDERMIS.

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