[Pathogenesis of varicose ulcers of the lower extremities]. 1990

V K Gostishchev, and A M Khokhlov, and T A Vorobeĭchik, and N P Shimanovskaia

The article discusses the biochemical mechanisms of skin destruction and ulcer formation in patients with varicosity of the lower limbs. Cathepsins A, B, C, and D were determined in the skin in various parts of the limb in 57 patients: in the lower third of the leg the activity of cathepsin D was increased by 183.8%, that of cathepsin B by 140.2%, and the activity of cathepsin B by 239%. On basis of the data obtained the authors conclude that cathepsins take part in skin destruction. Increased activity of cathepsin D plays the initiative role in this process. Cathepsin activity reduced after 14-16 day treatment with aescusan; D by 24.1%, B by 17.7%, and A by 15.4%. The authors link the effect of the treatment with the protective effect of the preparation on the lysosomal membranes.

UI MeSH Term Description Entries
D002403 Cathepsins A group of lysosomal proteinases or endopeptidases found in aqueous extracts of a variety of animal tissues. They function optimally within an acidic pH range. The cathepsins occur as a variety of enzyme subtypes including SERINE PROTEASES; ASPARTIC PROTEINASES; and CYSTEINE PROTEASES. Cathepsin
D004789 Enzyme Activation Conversion of an inactive form of an enzyme to one possessing metabolic activity. It includes 1, activation by ions (activators); 2, activation by cofactors (coenzymes); and 3, conversion of an enzyme precursor (proenzyme or zymogen) to an active enzyme. Activation, Enzyme,Activations, Enzyme,Enzyme Activations
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012867 Skin The outer covering of the body that protects it from the environment. It is composed of the DERMIS and the EPIDERMIS.
D014647 Varicose Ulcer Skin breakdown or ulceration in the drainage area of a VARICOSE VEIN, usually in the leg. Stasis Ulcer,Venous Ulcer,Venous Hypertension Ulcers,Venous Stasis Ulcers,Hypertension Ulcer, Venous,Hypertension Ulcers, Venous,Stasis Ulcer, Venous,Stasis Ulcers,Stasis Ulcers, Venous,Ulcer, Stasis,Ulcer, Varicose,Ulcer, Venous,Ulcer, Venous Hypertension,Ulcer, Venous Stasis,Ulcers, Stasis,Ulcers, Varicose,Ulcers, Venous,Ulcers, Venous Hypertension,Ulcers, Venous Stasis,Varicose Ulcers,Venous Hypertension Ulcer,Venous Stasis Ulcer,Venous Ulcers
D014648 Varicose Veins Enlarged and tortuous VEINS. Varices,Varix,Varicose Vein,Vein, Varicose,Veins, Varicose

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