摘要:
A process for producing a small-sized, lipid-based cochleate. Cochleates are derived from liposomes which are suspended in an aqueous two-phase polymer solution, enabling the differential partitioning of polar molecule based-structures by phase separation. The liposome-containing two-phase polymer solution, treated with positively charged molecules such as Ca2+ or Zn2+, forms a cochleate precipitate of a particle size less than one micron. The process may be used to produce cochleates containing biologically relevant molecules.
摘要:
A process for producing a small-sized, lipid-based cochleate. Cochleates are derived from liposomes which are suspended in an aqueous two-phase polymer solution, enabling the differential partitioning of polar molecule based-structures by phase separation. The liposome-containing two-phase polymer solution, treated with positively charged molecules such as Ca2+ or Zn2+, forms a cochleate precipitate of a particle size less than one micron. The process may be used to produce cochleates containing biologically relevant molecules.
摘要:
Microstructures formed from fluorinated amphiphiles and mixed fluorinated and non-fluorinated amphiphiles and having the geometry of tubules, helixes and fibers and methods for preparing them. Tubular forms are capable of encapsulating or incorporating bioactive agents or other useful substances for controlled release in vivo.
摘要:
A process for producing a small-sized, lipid-based cochleate is described. Cochleates are derived from liposomes which are suspended in an aqueous two-phase polymer solution, enabling the differential partitioning of polar molecule based-structure by phase separation. The liposome-containing two-phase polymer solution, treated with positively charged molecules such as Ca.sup.2+ or Zn.sup.2+, forms a cochleate precipitate of a particle size less than one micron. The process may be used to produce cochleates containing pharmaceutical agents or biologically relevant molecules. Small-sized cochleates may be administered orally or through the mucosa to obtain an effective method of treatment.
摘要:
New fluorinated derivatives useful as surfactants or in the transport of drug or markers, or in drug targeting, and preparations containing the derivatives, for medical, cosmetic and veterinary uses, having the formula: ##STR1## wherein R.sub.F is a fluorinated radical, X is a linear or branched alkylene, R.sup.1 is H or CH.sub.3, R.sup.2 is a radical having at least one OH group, R.sup.3 is a radical derived from an amino acid or a peptide, 1.ltoreq.n.ltoreq.50 and 0.ltoreq.m.ltoreq.200 with 0.2.ltoreq.n/n+m.ltoreq.1. These derivatives can be used as prodrugs or in formulating pharmaceutical, cosmetic and veterinary preparations, in biology and medicine, notably in compositions acting as carriers of oxygen and other gases, of contrast agents, or as carriers of substances used in therapy, or as carriers of markers.
摘要翻译:新的氟化衍生物可用作表面活性剂或用于药物或标记物的运输,或用于药物靶向的药物,以及含有衍生物的用于医疗,化妆品和兽医用途的制剂,具有下式:其中RF是氟化基团 X是直链或支链的亚烷基,R 1是H或CH 3,R 2是具有至少一个OH基团的基团,R 3是衍生自氨基酸或肽的基团,n = 50和0 = m = 200,其中0.2 = n / n + m 1。 这些衍生物可用作前药或在生物学和医学中配制药物,化妆品和兽医制剂,特别是用作氧气和其它气体的载体的造影剂,或作为治疗中使用的物质的载体,或作为载体 的标记。
摘要:
Fluorinated derivatives useful as surfactants or in the transport of drug or markers, or in drug targeting, and preparations containing the derivatives, for medical, cosmetic and veterinary uses, having the formula: ##STR1## wherein R.sub.F is a fluorinated radical, X is a linear or branched alkylene, R.sup.1 is H or CH.sub.3, R.sup.2 is a radical having at least one OH group, R.sup.3 is a radical derived from an amino acid or a peptide, 1.ltoreq.n.ltoreq.50 and 0.ltoreq.m.ltoreq.200 with 0.2.ltoreq.n/n+m.ltoreq.1. These derivatives can be used as prodrugs or in formulating pharmaceutical, cosmetic and veterinary preparations, in biology and medicine, notably in compositions acting as carriers of oxygen and other gases, of contrast agents, or as carriers of substances used in therapy, or as carriers of markers.
摘要翻译:用作医药,化妆品和兽医用途的用作表面活性剂或药物或标记物或药物靶向运输和含有衍生物的制剂的氟化衍生物,具有下式:其中RF是氟化基团, X是直链或支链的亚烷基,R1是H或CH3,R2是具有至少一个OH基团的基团,R3是衍生自氨基酸或肽的基团,1≤n≤50和0 < / = m = 200,其中0.2 = n / n + m 1。 这些衍生物可用作前药或在生物学和医学中配制药物,化妆品和兽医制剂,特别是用作氧气和其它气体的载体,造影剂的组合物,或作为治疗用物质的载体或载体 的标记。
摘要:
Amphiphilic derivatives of amino acids or peptides are provided, comprising a polyhydroxylated hydrophilic part derived from a sugar, from a polyol, from an aminopolyol or from an oligosaccharide, and at least one hydrophobic part derived from a hydrocarbon, fluorocarbon, or a mixed fluorocarbon/hydrocarbon, saturated or unsaturated, having from 5 to 20 carbon atoms, the hydrophobic part(s) being linked to the hydrophilic part by a junction bearing an amino acid or a peptide.
摘要:
Nepafenac or derivatives thereof are useful for the treatment of dermatological conditions related to a keratinization disorder that may have an inflammatory immunoallergic component, for example rosacea, acne, psoriasis or atopic dermatitis.
摘要:
A method for preparing highly stable aqueous gels based on metronidazole, well suited for treating such skin conditions as rosacea, acne and dermatitis, entails the successive steps of:(A) forming a solvent medium M comprising water and propylene glycol;(B) dissolving the metronidazole in this solvent medium M, and optionally diluting the medium obtained by addition of water, whereby a solution S of metronidazole is obtained; and thence(C) mixing the solution S obtained with a gelling polymer, in a sufficient amount to ensure gelling of the composition.
摘要:
Amphiphilic derivatives of amino acids or peptides are provided, comprising a polyhydroxylated hydrophilic part derived from a sugar, from a polyol, from an aminopolyol or from an oligosaccharide, and at least one hydrophobic part derived from a hydrocarbon, fluorocarbon, or a mixed fluorocarbon/hydrocarbon, saturated or unsaturated, having from 5 to 20 carbon atoms, the hydrophobic part(s) being linked to the hydrophilic part by a junction bearing an amino acid or a peptide.