摘要:
Process for the preparation of submicroscopic particles formed of a polymerized alkyl cyanoacrylate and containing a biologically active substance.At least one alkyl cyanoacrylate, in which the term "alkyl" denotes an alkyl radical having 1 to 12 carbon atoms, is added, with stirring, to pure water or to an aqueous solution or aqueous colloidal solution of an acid and/or of another water-soluble substance, and the stirring is continued until substantially all the alkyl cyanoacrylate has been converted to submicroscopic particles formed of polyalkyl cyanoacrylate; a biologically active substance is introduced into the reaction medium before the introduction of the monomer or after formation of the submicroscopic particles.The submicroscopic particles are useful as carriers for substances such as medical substances or products for diagnosis.
摘要:
Biodegradable particles, with a diameter smaller than 500 nanometers, formed by the micellar polymerization of an alkyl-cyano-acrylate where the term "alkyl" means a lower alkyl radical having 1 to 4 carbon atoms and containing a biologically active substance.
摘要:
Biodegradable particles, with a diameter smaller than 500 nanometers, formed by the micellar polymerization of an alkyl-cyano-acrylate where the term "alkyl" means a lower alkyl radical having 1 to 4 carbon atoms and containing a biologically active substance. Also provided are processes for making pharmaceutical compositions containing the biodegradable particles and using the particles in pharmaceutical and diagnostic applications.
摘要:
The use of squalenic acid or a derivative thereof in formulating at least one polar active principle with a molecular weight of 100 Da or more, in the form of nanoparticles, and pharmaceutical compositions thereof.
摘要:
The invention concerns a 2′,2′-difluoro-2′-deoxycytidine derivative of general formula (I), wherein: R1, R2 and R3, identical or different, represent independently of one another, a hydrogen atom or an at least C18 hydrocarbon acyl radical and of such conformation that it is capable of providing the compound of general formula (I), a compacted form in a polar solvent medium, at least one of groups R1, R2 and R3 being other than a hydrogen atom.
摘要:
A method for treating eye diseases by injecting intraocularly or periocularly a composition comprising an emulsion and optionally at least a pharmaceutical active ingredient.
摘要:
The present invention relates to a complex made up of at least one beta-lactam molecule covalently bonded to at least one hydrocarbon radical including at least 18 carbon atoms and containing at least one unit of 2-methyl-buta-2-ene, to nanoparticles of said complexes, and to a method for preparing same, said complex and/or said nanoparticles optionally being in the form of a lyophilisate. The present invention also relates to a pharmaceutical composition including at least said complex and/or said nanoparticles. The invention finally relates to said complex and/or to said nanoparticles for the treatment and/or prevention of bacterial infections, in particular caused by strains that are sensitive to beta-lactams.
摘要:
The invention concerns multiparticulate galenic formulations for oral administration and designed for colon targeted delivery of active principles selected from the group comprising enzymes capable of inactivating macrolides and the like, enzymes capable of inactivating quinolones and β-lactamases.
摘要:
The invention relates to solid organometallic hybrids with modified surface. Said solid may be used for example for the encapsulation and vectoring of molecules of interest such as active pharmaceutical agents, compounds of interest in cosmetics and markers, for example, contrast agents. Said solids show good results in terms of loading capacity in medicament agents and in biocompatibility.
摘要:
The invention relates to novel compounds, characterized in that they comprise a hemoprotein which is associated with a sequenced block copolymer, comprising an hydrophilic segment which is an oligo or polysaccharide linked to at least one hydrophobic segment of formula (1) wherein x represents H or an radical which is alkyl, CN or CONHR, Y represents a COOR′, CONHR″ or C6H5 radical, wherein R, R′ and R″ represent, independently from each other, a hydrogen atom, a C1-C20 linear ou branched alkyl group, a C1-C20 linear or branched alcoxy group, an amino acid radical, a mono- or poly-hydroxyl acid radical or an aryl ou heteroaryl C5-C12 radical, and forms associated with a gas. The invention can be used as blood substitutes and depolluting agents.