[Mucopolysacchariduria in genetic dermatoses: hereditary epidermolysis bullosa, congenital ichthyosis and ectodermal dysplasia].

4 patients suffering from epidermolysis bullosa, 11 persons with genetically determined ichthyosis, as well as 3 cases of x-linked recessive ectodermal dysplasia were investigated with regard to glycosaminoglycane(GAG)uria; the GAG fractions were analysed by means of GAG thin-layer chromatography. All three groups of patients showed increased GAG-uria. The GAG fractions proved to be chondroitin-6-sulphate, chondroitin-4-sulphate, and heparan-sulphate. The pathomechanism of the increased GAG-uria is supposed to be an increased GAG degradation process.