摘要:
The invention concerns novel materials based on biodegradable branched polyaminoacids particularly useful for transporting active principle(s). The invention also concerns novel pharmaceutical, cosmetic, dietetic or phytosanitary compositions based on polyaminoacids. The invention aims at providing a novel polymeric material, capable of being used for transporting active principle(s) and enabling all the required relevant specifications to be optimally satisfied: biocompatibility, biodegradability, easy ability to be combined with a large number of active principles or to solubilize same, and to release the active principles in vivo. This is achieved by the present invention which firstly concerns branched polyaminoacids comprising aspartic acid units and or glutamic acid units, and which bear hydrophobic groups including 8 to 30 carbon atoms. The branched polyaminoacids are amphiphilic and are capable of being easily and economically transformed into particles for transporting active principles, the particles being themselves capable of forming stable aqueous colloidal suspensions.
摘要:
The invention concerns novel materials based on biodegradable branched polyaminoacids particularly useful for transporting active principle(s). The invention also concerns novel pharmaceutical, cosmetic, dietetic or phytosanitary compositions based on polyaminoacids. The invention aims at providing a novel polymeric material, capable of being used for transporting active principle(s) and enabling all the required relevant specifications to be optimally satisfied: biocompatibility, biodegradability, easy ability to be combined with a large number of active principles or to solubilize same, and to release said active principles in vivo. This is achieved by the present invention which firstly concerns branched polyaminoacids comprising aspartic acid units and or glutamic acid units, and which bear hydrophobic groups including 8 to 30 carbon atoms. Said branched polyaminoacids are amphiphilic and are capable of being easily and economically transformed into particles for transporting active principles, said particles being themselves capable of forming stable aqueous colloidal suspensions.
摘要:
The invention relates to novel biodegradable materials which are based on modified polyamino acids and which can be used for the vectorisation of active principle(s) (AP). The invention also relates to novel pharmaceutical, cosmetic, dietary or phytosanitary compositions based on said polyamino acids. The aim of the invention is to provide a novel polymer raw material which can be used for the vectorisation of active principles and which can optimally fulfil all required specifications in said area, namely: biocompatibility, biodegradability and the ability to become easily associated with many active principles or to solubilise said principles and to release same in vivo. Said aim is achieved with novel copolyhydroxyalkylglutamines comprising glutamine units and optionally glutamate units and bearing hydrophobic groups containing between 8 and 30 carbon atoms. Said copolyhydroxyalkylglutamines are amphiphilic and can be easily and economically transformed into particles for the vectorisation of active principles, whereby said particles can form stable aqueous colloidal suspensions.
摘要:
The invention relates to novel materials based on biodegradable homopolyamino acids and which can be used for the vectorization of (an) active ingredient(s) (AI). The invention also relates to novel pharmaceutical, cosmetic, dietetic or phytosanitaty compositions based on homopolyamino acids. The invention can produce a novel polymer raw material which can be used for the vectoiization of Al that can optimally be: biocompatible, biodegradable, capable of becoming easily associated with a large number of active ingredients or solubilizing them and releasing the active ingredients in vivo. According to the present invention, which primarily relates to linear homopolyamino acids having aspartic or glutamic units and whose attachments can include hydrophobic groups having 8-30 carbon atoms. The homopolymers are amphiphilic and anionic and can easily be transformed at low cost into particles for the vectorization of active ingredients. The particles can form stable aqueous colloidal suspensions.
摘要:
The invention relates to novel materials based on biodegradable homopolyamino acids and which can be used for the vectorization of (an) active ingredient(s) (AI). The invention also relates to novel pharmaceutical, cosmetic, dietetic or phytosanitary compositions based on said homopolyamino acids. The aim of the invention is to produce a novel polymer raw material which can be used for the vectorization of AI and which meets all specifications in an optimum manner: biocompatibility, biodegradability, the ability to become easily associated with a large number of active ingredients or to solubilize them and to release said ingredients in vivo. According to the present invention, which primarily relates to linear homopolyamino acids having aspartic or glutamic units and whose extremities include hydrophobic groups having 8-30 carbon atoms. Said homopolymers are amphiphilic and anionic and can easily be transformed at low cost into particles for the vectorization of active ingredients. Said particles can form stable aqueous colloidal suspensions.
摘要:
The present invention relates to novel materials based on biodegradable polyamino acids that are useful especially for the vectorization of active principle(s) (AP). The invention further relates to novel pharmaceutical, cosmetic, dietetic or phytosanitary compositions based on these polyamino acids. The object of the invention is to provide a novel polymer starting material that is capable of being used for the vectorization of AP and makes it possible on the one hand to achieve high polymer/AP ratios, and on the other hand optimally to satisfy all the specifications required in the case in point: biocompatibility, biodegradability, ability to associate easily with numerous active principles or to solubilize them, and ability to release these active principles in vivo. This object is achieved by the present invention, which relates first and foremost to linear polyamino acids comprising aspartic units or glutamic units and having hydrophobic grafts comprising hydrophobic groups containing from 8 to 30 carbon atoms, at least one of these hydrophobic grafts having at least one anionic charge and/or one or more mutually identical or different ionizable groups each capable of giving rise to at least one anionic charge. These polymers are amphiphilic and anionic and are capable of being converted easily and economically to particles for the vectorization of active principles, these particles themselves being capable of forming stable aqueous colloidal suspensions.
摘要:
The present invention relates to a composition comprising at least one active ingredient with low aqueous solubility, said active ingredient being present therein in a form noncovalently associated with nanoparticles formed by at least one POM polymer of formula (I), and in which said active ingredient is present in a proportion of at least 5 μmol/g of POM.It is also directed towards the use of such nanoparticles, noncovalently associated with an active ingredient, with a view to increasing the aqueous solubilization of said active ingredient.
摘要:
The present invention pertains to interferon-beta (IFN-beta) compositions comprising interferon-beta and a grafted poly(glutamic acid) polymer having an average molecular weight between 26,000 and 40,000 g/mol, grafted with alpha-tocopherol substituents, the average molar grafting ratio being 4.5-5.5 moles %, the weight/weight ratio between said grafted poly(glutamic acid) polymer and IFN-beta being between 24 and 125. The present invention also pertains to the preparation methods of such compositions and their application to obtain therapeutic compositions in dosage unit form delivering IFN-beta over an extended period of time.
摘要:
The present invention relates to a novel solid composition, useful for treating hepatitis, in particular hepatitis C, comprising at least one interferon alpha and at least one grafted poly(glutamic acid) having an average molar mass ranging from 26,000 to 40,000 g/mol, preferably approximately 33,000 g/mol and carrying grafts of alpha-tocopherol at an average molar grafting rate ranging from 4.5 to 5.5%, preferably approximately 5%, the interferon alpha and said grafted poly(glutamic acid) being present in a grafted poly(glutamic acid)/interferon alpha weight ratio ranging from 21 to 125.It also relates to the use of such a solid composition for the preparation of a liquid composition by the addition of an aqueous liquid.
摘要:
The present invention relates to a composition comprising at least one active ingredient with low aqueous solubility, said active ingredient being present therein in a form noncovalently associated with nanoparticles formed by at least one POM polymer of formula (I), and in which said active ingredient is present in a proportion of at least 5 μmol/g of POM.It is also directed towards the use of such nanoparticles, noncovalently associated with an active ingredient, with a view to increasing the aqueous solubilization of said active ingredient.