Abstract: Disclosed is a gastro-resistant vector for the oral administration of at least one pharmaceutical and/or antigenic active substance including an aqueous phase (W) and an oily phase (O) in the form of a water-in-oil (W/O)-type emulsion wherein the aqueous phase includes at least one active principle and between 2 and 40 wt. % of a hydrophilic polymer that is insoluble in an aqueous phase of pH<6.5.

Abstract: Method for preparing a vaccine, comprising—a step a) of preparing an adjuvant composition by dispersing, in a physiologically acceptable aqueous solution, at least one inverse latex or a powder of polymer resulting from the atomization of said inverse latex; —a step b) of mixing the composition obtained in step a) into an antigenic medium, intended to form a vaccine composition.

Abstract: Disclosed is a gastro-resistant vector for the oral administration of at least one pharmaceutical and/or antigenic active substance including an aqueous phase (W) and an oily phase (O) in the form of a water-in-oil (W/O)-type emulsion wherein the aqueous phase includes at least one active principle and between 2 and 40 wt. % of a hydrophilic polymer that is insoluble in an aqueous phase of pH<6.5.

Abstract: Composition for the implementation of a therapeutic method for the human or animal body, comprising a fatty phase (O) and an aqueous phase (W), in the form of an 5 emulsion of the water-in-oil (W/O) type, in which said aqueous phase (W) comprises at least one hydrosoluble active ingredient, characterized in that said composition has a viscosity, measured at 25° C. in a 250-cm3 beaker having a diameter of about 7 cm, using a Brookfield LVT viscosimeter equipped with a No. 2 spindle turning at a speed of 30 or 60 revolutions pre minute, of less than or equal to 10 [sic] 2000 mPas, and preferably less than 200 mPas.

Abstract: A multivalent cationic lipid having a positively-charged head group including two quaternary amine groups and a hydrophobic portion including four hydrocarbon chains, which may be the same or different and which are optionally substituted alkyl and alkenyl groups, two alkyl chains attached to each of the two quaternary amine groups can be used for the introduction of polyanionic materials such a nucleic acid polymers into cells. Specific cationic lipids are N,N,N?,N?-tetraoleyl-N-N?-dimethyl-1,3-propanediammonium chloride and N,N,N?,N?-tetraoleyl-N-N?-dimethyl-1,6-hexanediammonium chloride.

Abstract: A multivalent cationic lipid having a positively-charged head group including two quaternary amine groups and a hydrophobic portion including four hydrocarbon chains, which may be the same or different and which are optionally substituted alkyl and alkenyl groups, two alkyl chains attached to each of the two quaternary amine groups can be used for the introduction of polyanionic materials such a nucleic acid polymers into cells. Specific cationic lipids are N,N,N′,N′-tetraoleyl-N-N′-dimethyl-1,3-propanediammonium chloride and N,N,N′,N′-tetraoleyl-N-N′-dimethyl-1,6-hexanediammonium chloride.

Abstract: Described is a composition comprising: