Abstract: The invention discloses new oligodeoxyribonucleotides of animal origin, having a molecular weight comprised between 4000 and 10000 daltons, that can be obtained by fractionation of polydeoxyribonucleotides or otherwise by chemical or enzymatic depolymerization of high molecular weight deoxyribonucleic acids. The new compounds are endowed with a significant anti-ischemic activity.

Abstract: There are provided oligodeoxyribonucleotides of animal origin, having a molecular weight between 4000 and 10000 daltons, that can be obtained by fractionation of polydeoxyribonucleotides or otherwise by chemical or enzymatic depolymerization of high molecular weight deoxyribonucleic acids. The compounds are endowed with a significant anti-ischemic activity.

Abstract: Polysaccharides and more in particular glycosaminoglycans, their mixtures, fractions and derivatives thereof are effective agents in the therapy of acute peripheral neuropathies of traumatic and ischemic origin and in the therapy of acute peripheral neuropathies of toxic origin.

Abstract: Depolymerization of stabilized solutions of highly polymerized and nicked polydeoxyribonucleotides, as obtained through stabilizing aggregation of raw nucleic acids, the depolymerization being carried out by heating at controlled temperature and being controlled as a function of the variation of the reversible hyperchromicity, followed by the removal of the hydrogen bonds in the double stranded filaments and by thermal stabilization of the single stranded filaments, polydeoxyribonucleotide is obtained. The polydeoxyribonucleotide has the following formula of random sequence:P.sub.1-5, (dAp).sub.12-24, (dGp).sub.10-20, (dTp).sub.13-26, (dCp).sub.10-20,whereinP=phosphoric radicaldAp=deoxyadenylic monomerdGp=deoxyguanylic monomerdTp=deoxythymidylic monomerdCp=deoxycytidylic monomerand has well defined chemico-physical properties, reproducible in industrial production.

Abstract: Pharmaecutical composition for topical use containing Defibrotide have been found effective in the therapy of local pathologies characterized by a reduced resistance of the blood capillary vessels.

Abstract: Novel derivatives are disclosed as obtained from chondroitin sulfate, dermatan sulfate and hyaluronic acid, having a molar ratio between sulfate groups and carboxylic groups like that of heparin and furthermore characterized by possessing, as the heparin, the sulfoamino group at the carbon atom at the 6 position of hexosamine.The novel compounds show a very remarkable clearing activity in comparison with the starting mucopolysaccharides, this activity being similar and for some derivatives comparable with that of heparin.Moreover, differently from what normally happens upon sulfating the sulfomucopolysaccharides, the anticoagulating activity of the novel compounds is negligible or anyhow very reduced.The compounds of the present invention find use in the therapy of arteriosclerosis.

Abstract: By carrying out the depolymerization of stabilized solutions of highly polymerized and nicked polydeoxyribonucleotides, as obtained through stabilizing aggregation of raw nucleic acids, the depolymerization being carried out by heating at controlled temperature and being controlled as a function of the variation of the reversible hyperchromicity, followed by the removal of the hydrogen bonds in the double stranded filaments and by thermal stabilization of the single stranded filaments, the polydeoxyribonucleotide, known as Defibrotide is obtained. Defibrotide has the following formula of random sequence:P.sub.1-5,(dAp).sub.12-24,(dGp).sub.10-20, (dTp).sub.13-26,(dCP).sub.10-20,whereinP=phosphoric radicaldAp=deoxyadenylic monomerdGp=deoxyguanylic monomerdTp=deoxythymidylic monomerdCp=deoxycytidylic monomerand has well defined chemico-physical properties, reproducible in the industrial production.

Abstract: Defibrotide, a polydeoxyribonucleotide, obtained by extraction from animal organs, is the active ingredient of compositions for the treatment of acute states of myocardial ischemia and infarction.

Abstract: A pharmaceutical composition comprising an anhydrous suspension of a heparinoidic factor in a suspending medium selected from vegetable and animal fats, aliphatic acids and their alkyl esters, in the presence of an anionic dispersant (typically sodium taurocholate), is orally administrable to patients in need of a medicine having antiplasmin inhibiting effect.