Abstract: The present invention relates to the use of an alkaline or alkaline earth metal chondroitin sulphate, which comes from an enzymatic hydrolysis of animal cartilage, for the preparation of a medicament for the treatment or prevention of psoriasis with skin affection in a mammal. Preferably the sodium chondroitin sulphate has an average molecular weight between 10,000 and 20,000 daltons, and is administered orally.

Abstract: This invention relates to a process for the preparation of glucosamine hydroiodide, glucosamine pyruvate, glucosamine phosphate or their mixtures with glucosamine hydrochloride, by electrodialysis. Starting from glucosamine hydrochloride, the exchange of the Cl? for an anion selected from the group consisting of SO4 ?2, I?, CH3COCOO? and PO4?3 takes place during the process. The electrodialysis, that comprises a cathode, anode, and means of separation composed of anion exchange membranes, cation exchange membranes, bipolar membranes or by other suitable means of separation. This invention also relates to a glycosamine sulphate containing chlorides obtainable by the process, and its therapeutic use.