Abstract: The invention relates to a specific substrate on an ALDH isoenzyme, to a composition comprising at least one such substrate, to a diagnostic marker comprising such a substrate, and to the uses thereof and associated methods.

Abstract: The invention relates to a specific substrate on an ALDH isoenzyme, to a composition comprising at least one such substrate, to a diagnostic marker comprising such a substrate, and to the uses thereof and associated methods.

Abstract: The invention relates to novel aminothiol ester compounds having the general formula (I): and to a method for preparing them and to their use in pharmaceutical compositions intended for use in human or veterinary medicine (cancers and precancers, dermatological, rheumatic and ophthalmological complaints in particular) or in cosmetic compositions. The invention also relates to a pharmaceutical or cosmetic composition, characterized in that it comprises, as active agent, a compound of general formula (I) in combination with a pharmaceutically or cosmetically acceptable support.

Abstract: A module for extracorporeal purification of a biological fluid includes at least one support or wall defining a compartment which is delimited by an ionic functionalized support or wall, the surface of which is bonded by ionic bonds to a first molecule or macromolecule which exhibits free amine groups to which are covalently bonded a second molecule or macromolecule which exhibits free carboxylic groups which can directly or indirectly form amide, ester or thioester bonds. The invention also includes methods of producing such module.

Abstract: Use of at least one aminothiol ester derivative for the preparation of a pharmaceutical composition intended to increase the inhibition of a character resistant to the induction of apoptosis of transformed cells, this character being due to the bc12 gene present in these cells. The pharmaceutical composition is more particularly intended to treat pathologies chosen from breast cancers, B cell lymphomas, leukaemias, neuroblastomas, adenocarcinomas of the prostate, prolactinomas and other pituitary adenomas.

Abstract: Novel and improved methods for diagnosis, prognosis, prophylaxis and therapy of viral infections are described. The novel methods employ a virus, viral antigen or fragment thereof in which "perturbation" of an oligosaccharide moiety renders the virus, viral antigen or fragment thereof more specifically recognizable or reactive with neutralizing antibody. As described, "perturbation" of an oligosaccharide moiety encompasses a variety of modifications such has one that (1) alters the chemical or physical structure of a carbohydrate residue that is naturally present; (2) that removes, wholly or in part, a carbohydrate residue; and/or (3) that prevents or alters addition of a carbohydrate residue. A variety of different methods for oligosaccharide "perturbation" are also described. In particular, the carbohydrate residue is altered by an oxidizing agent.

Abstract: Novel and improved methods for diagnosis, prognosis, prophylaxis and therapy of viral infections are described. The novel methods employ a virus, viral antigen or fragment thereof in which "perturbation" of an oligosaccharide moiety renders the virus, viral antigen or fragment thereof more specifically recognizable or reactive with neutralizing antibody. As described, "perturbation" of an oligosaccharide moiety encompasses any modification that (1) alters the chemical or physical structure of a carbohydrate residue that is naturally present; (2) that removes, wholly or in part, a carbohydrate residue; and/or (3) that prevents or alters addition of a carbohydrate residue. A variety of methods for oligosaccharide "perpetuation" are also described.

Abstract: A compound of the formula ##STR1## wherein R.sub.1 and R.sub.2 each independently represent a hydrocarbon gp which can be substituted and/or carry a heteroatom, or R.sub.1 and R.sub.2 together represent a hydrocarbon, optionally substituted, forming with the carbon atom to which they are attached, a ring capable of carrying a heteroatom, R.sub.3 represents hydrogen, lower alkyl or aryl, and R.sub.4 and R.sub.5 each independently represent hydrogen or a hydrocarbon group, as well as the acid addition salts thereof. A method of preparing the compounds and the use thereof as an anti-tumor medicine are disclosed.

Abstract: Process for chemically binding organic compounds containing carbohydrate residues, onto a support bearing at least one reactive --NH.sub.2, in which at least one --CH.sub.2 OH group of the carbohydrate residue is transformed in a --CHO group, by oxidation and then the --CHO groups thus obtained are reacted with at least a reactive --NH.sub.2 carried by the side chains covalently bound on a solid, insoluble support, the side chains are chosen from among amines, polyamines, diacids, amino-acids, hydrazines, and are eventually coupled, by the intermediary of their reactive --NH.sub.2, with a nitrogen-containing compound chosen from aliphatic or aromatic amines, aliphatic or aromatic hydrazines, or amino acids, comprising eventually jointly a --SH group and a --NH.sub.2 group.Products resulting from this process and biological reagents containing said products as their active constituents.

Abstract: The present invention relates to a new test for detecting influenza viruses. This test comprises: 1- the addition of influenzia virus or of allantoic liquid containing said virus to neuraminidase substrate containing at least one sialic acid group. The substrate is fixed by covalent coupling to an appropriate insoluble solid support, it being understood that said substrate may be formed by all types of mucoproteins, oligosaccharides, mucopolysaccharides or mucolipids comprising at least one sialic acid group capable of being used as a neuraminidase substrate; 2- incubation of the influenza virus with its substrate for an appropriate length of time; 3- then reading the reaction.

Abstract: Process for chemically binding organic compounds containing carbohydrate residues, onto a support bearing at least one reactive --NH.sub.2, in which at least one --CH.sub.2 OH group of the carbohydrate residue is transformed in a --CHO group, by oxidation and then the --CHO groups thus obtained are reacted with at least a reactive --NH.sub.2 carried by the side chains covalently bound on a solid, insoluble support, the side chains are chosen from among amines, polyamines, diacides, amino-acids, hydrazines, are eventually coupled, by the intermediary of their reactive --NH.sub.2, with a nitrogen-containing compound chosen from aliphatic or aromatic amines, aliphatic or aromatic hydrazines, or amino acids, comprising eventually jointly a --SH group and a --NH.sub.2 group.Products resulting from this process and biological reagents containing said products as their active constituents.