Abstract: Cysteine compositions comprising less than about 400 ?g/L of aluminum. For example, solutions of cysteine comprising a pharmaceutically acceptable solvent, cysteine, and less than about 145 ?g/L of aluminum, wherein the solution is devoid of visible particulate matter. Cysteine compositions described herein may be suitable for injection. For example, disclosed cysteine solutions may be provided intravenously to meet amino acid nutritional requirement in individuals receiving total parenteral nutrition. Also provided are processes for preparing cysteine compositions, and methods for providing cysteine to individuals in need thereof.

Abstract: Cysteine compositions comprising less than about 400 ?g/L of aluminum. For example, solutions of cysteine comprising a pharmaceutically acceptable solvent, cysteine, and less than about 145 ?g/L of aluminum, wherein the solution is devoid of visible particulate matter. Cysteine compositions described herein may be suitable for injection. For example, disclosed cysteine solutions may be provided intravenously to meet amino acid nutritional requirement in individuals receiving total parenteral nutrition. Also provided are processes for preparing cysteine compositions, and methods for providing cysteine to individuals in need thereof.

Abstract: Cysteine compositions comprising less than about 400 ?g/L of aluminum. For example, solutions of cysteine comprising a pharmaceutically acceptable solvent, cysteine, and less than about 145 ?g/L of aluminum, wherein the solution is devoid of visible particulate matter. Cysteine compositions described herein may be suitable for injection. For example, disclosed cysteine solutions may be provided intravenously to meet amino acid nutritional requirement in individuals receiving total parenteral nutrition. Also provided are processes for preparing cysteine compositions, and methods for providing cysteine to individuals in need thereof.

Abstract: Cysteine compositions comprising less than about 400 ?g/L of aluminum. For example, solutions of cysteine comprising a pharmaceutically acceptable solvent, cysteine, and less than about 145 ?g/L of aluminum, wherein the solution is devoid of visible particulate matter. Cysteine compositions described herein may be suitable for injection. For example, disclosed cysteine solutions may be provided intravenously to meet amino acid nutritional requirement in individuals receiving total parenteral nutrition. Also provided are processes for preparing cysteine compositions, and methods for providing cysteine to individuals in need thereof.

Abstract: Cysteine compositions comprising less than about 400 ?g/L of aluminum. For example, solutions of cysteine comprising a pharmaceutically acceptable solvent, cysteine, and less than about 145 ?g/L of aluminum, wherein the solution is devoid of visible particulate matter. Cysteine compositions described herein may be suitable for injection. For example, disclosed cysteine solutions may be provided intravenously to meet amino acid nutritional requirement in individuals receiving total parenteral nutrition. Also provided are processes for preparing cysteine compositions, and methods for providing cysteine to individuals in need thereof.

Abstract: Cysteine compositions comprising less than about 400 ?g/L of aluminum. For example, solutions of cysteine comprising a pharmaceutically acceptable solvent, cysteine, and less than about 145 ?g/L of aluminum, wherein the solution is devoid of visible particulate matter. Cysteine compositions described herein may be suitable for injection. For example, disclosed cysteine solutions may be provided intravenously to meet amino acid nutritional requirement in individuals receiving total parenteral nutrition. Also provided are processes for preparing cysteine compositions, and methods for providing cysteine to individuals in need thereof.

Abstract: Cysteine compositions comprising less than about 400 ?g/L of aluminum. For example, solutions of cysteine comprising a pharmaceutically acceptable solvent, cysteine, and less than about 145 ?g/L of aluminum, wherein the solution is devoid of visible particulate matter. Cysteine compositions described herein may be suitable for injection. For example, disclosed cysteine solutions may be provided intravenously to meet amino acid nutritional requirement in individuals receiving total parenteral nutrition. Also provided are processes for preparing cysteine compositions, and methods for providing cysteine to individuals in need thereof.

Abstract: Cysteine compositions comprising less than about 400 ?g/L of aluminum. For example, solutions of cysteine comprising a pharmaceutically acceptable solvent, cysteine, and less than about 145 ?g/L of aluminum, wherein the solution is devoid of visible particulate matter. Cysteine compositions described herein may be suitable for injection. For example, disclosed cysteine solutions may be provided intravenously to meet amino acid nutritional requirement in individuals receiving total parenteral nutrition. Also provided are processes for preparing cysteine compositions, and methods for providing cysteine to individuals in need thereof.

Abstract: Cysteine compositions comprising less than about 400 ?g/L of aluminum. For example, solutions of cysteine comprising a pharmaceutically acceptable solvent, cysteine, and less than about 145 ?g/L of aluminum, wherein the solution is devoid of visible particulate matter. Cysteine compositions described herein may be suitable for injection. For example, disclosed cysteine solutions may be provided intravenously to meet amino acid nutritional requirement in individuals receiving total parenteral nutrition. Also provided are processes for preparing cysteine compositions, and methods for providing cysteine to individuals in need thereof.

Abstract: The present invention relates to novel microparticles formed of amphiphilic polyamino acids which transport active principle(s), AP(s), in particular protein and peptide active principle(s), and to novel modified-release pharmaceutical formulations comprising said AP microparticles. Microparticles of amphiphilic polyamino acid (PO) may include at least one AP (associated noncovalently) which spontaneously form a colloidal suspension of nanoparticles in water, at pH 7.0, under isotonic conditions. The microparticles may be obtained by atomization of a solution or colloidal suspension of PO comprising at least one AP, may have a size of between 0.5 and 100 microns, and may be dispersible in colloidal suspension.

Abstract: The present invention relates to novel pharmaceutical formulations based on aqueous colloidal suspensions for the prolonged release of one or more active principles, and to the applications, especially therapeutic applications, of these formulations. Formulations may include an aqueous colloidal suspension of low viscosity based on micrometric particles of a water-soluble, biodegradable, amphiphilic polymer carrying hydrophobic groups and ionizable hydrophilic groups that are at least partially ionized, said particles being capable of associating spontaneously and non-covalently with an active principle, at pH=7.0, under isotonic conditions. This suspension contains multivalent ions of opposite polarity to that of the hydrophilic groups, the ratio r, defined by the formula r=n×([IM]/[GI]), where n is the valency of said multivalent ions, [IM] is the molar concentration of multivalent ions, [GI] is the molar concentration of ionizable groups GI, being between 0.3 and 10.

Abstract: The present invention relates to a novel method for the preparation of nanoparticles with a diameter smaller than or equal to 500 nm, comprising bringing a solution (1) comprising nanoparticles of a first polyelectrolyte in the charged state, bearing hydrophobic side groups, together with (2) at least one second polyelectrolyte of opposite polarity to that of the first polyelectrolyte, characterized in that the ratio Z of the number of cationic groups relative to the number of anionic groups in the mixture of the two polyelectrolytes is comprised between 0.1 and 0.75 or between 1.3 and 2; and the total mass concentration C of polyelectrolytes is strictly less than 2 mg/g of the mixture.

Abstract: The invention relates to injectable long-acting insulin formulations for the treatment of types I and II diabetes in humans and animals. The essential object of the invention is to provide an injectable long-acting insulin formulation in the form of a colloidal suspension which is stable, which has a good local tolerance and toxicity compatible with the chronic treatment of diabetics, and which maintains a substantial hypoglycemic effect extending over at least 24 hours after a single administration, e.g. by the subcutaneous route. To achieve this object, the invention relates to a stable aqueous colloidal formulation of insulin-laden nanoparticles of at least one poly(Leu-block-Glu) in which the pH is between 5.8 and 7.0, the osmolarity O (in mOsmol) . . . : 270?O?800, and the viscosity v (in mPa·s) is low, namely v?40. The nanoparticles of poly(Leu-block-Glu) have a mean hydrodynamic diameter Dh such that: 15?Dh?40.

Abstract: The present invention aims to propose novel microparticle oral forms for the modified release of active ingredient(s), in particular protein or peptide in nature. It also relates to the uses, in particular therapeutic or cosmetic, of these microparticle oral forms.

Abstract: The invention relates to injectable long-acting insulin formulations for the treatment of types I and II diabetes in humans and animals. The essential object of the invention is to provide an injectable long-acting insulin formulation in the form of a colloidal suspension which is stable, which has a good local tolerance and toxicity compatible with the chronic treatment of diabetics, and which maintains a substantial hypoglycemic effect extending over at least 24 hours after a single administration, e.g. by the subcutaneous route. To achieve this object, the invention relates to a stable aqueous colloidal formulation of insulin-laden nanoparticles of at least one poly(Leu-block-Glu) in which the pH is between 5.8 and 7.0, the osmolarity O (in mOsmol) . . . : 270?O?800, and the viscosity v (in mPa.s) is low, namely v?40. The nanoparticles of poly(Leu-block-Glu) have a mean hydrodynamic diameter Dh such that: 15?Dh?40.

Abstract: The invention relates to injectable long-acting insulin formulations for the treatment of type I and II diabetes in humans and animals. The main objective of the invention is to provide a long-acting insulin formulation in the form of a colloidal suspension: which allows easy filling of a syringe through a small diameter needle (for example with the gauge 29 G, 30 G or 31 G) and/or which can be easily injected through a small diameter needle (for example with the gauge 29 G, 30 G or 31 G), without damaging the therapeutic efficacy of the insulin. To achieve this objective, the subject of the invention is an aqueous and stable colloidal formulation of nanoparticles of at least one poly(Leu-block-Glu), loaded with insulin, in which the pH is such that: 6.0?pH?7.

Abstract: The present invention relates to novel microparticles formed of amphiphilic polyamino acids which transport active principle(s), AP(s), in particular protein and peptide active principle(s), and to novel modified-release pharmaceutical formulations comprising said AP microparticles. The aim of the invention is to develop novel microparticles, charged with AP, obtained by aggregation of nanoparticles of amphiphilic polyamino acids and having improved properties, in particular in the dry solid form, with regard to their ability to be dispersed and, concerning the reconstituted suspension, its stability and its ability to be easily handled and injected. The invention relates firstly to microparticles of amphiphilic polyamino acid (PO) comprising at least one AP (associated noncovalently) which spontaneously form a colloidal suspension of nanoparticles in water, at pH 7.0, under isotonic conditions; which microparticles a.

Abstract: The aim of the invention is to provide a modified collagen peptide for preventing post-operative adhesions that is non-toxic, economic, in addition to being easy to obtain, sterilize, manipulate and implement, having controlled biodegradability and presenting a sufficiently strong initial mechanical resistance in situ (cohesion). This is achieved in the case of the modified collagen peptide for preventing post-operative adhesions according to the invention which is characterized in that it comprises at least one collagen peptide that is modified by grafting thiol functions that are free or substituted, cross-linkable and/or at least partly cross-linked, whereby the thiol functions are provided by mercaptoamine radicals that are exclusively grafted on the aspartic and glutamic acids of the collagen chains by means of amide bonds. The modified collagen peptide can exist in the form of a homogeneous or composite film, as a gel or in as a liquid which can be applied and cross-linked per se as on in vivo tissue.

Abstract: The present invention relates to novel organic products resulting, for example, from the condensation of a dicarboxylic acid with a sulfur-containing amino acid or one of its derivatives. These products contain reactive thiol SH functions which can be oxidized to form disulfide bridges, resulting in polymers, which may or may not be crosslinked.These novel organic products correspond to the following formula: ##STR1## The invention also relates to the polymers and/or networks deriving from the products of formula (I) and to one of the methods for obtaining these products and their derivatives.Applications as biomaterials: sutures, ligatures, prostheses, adhesives or systems for the controlled release of active principles.

Abstract: The present invention relates to novel pharmaceutical formulations based on aqueous colloidal suspensions for the prolonged release of one or more active principles, and to the applications, especially therapeutic applications, of these formulations. Formulations may include an aqueous colloidal suspension of low viscosity based on micrometric particles of a water-soluble, biodegradable, amphiphilic polymer carrying hydrophobic groups and ionizable hydrophilic groups that are at least partially ionized, said particles being capable of associating spontaneously and non-covalently with an active principle, at pH=7.0, under isotonic conditions. This suspension contains multivalent ions of opposite polarity to that of the hydrophilic groups, the ratio r, defined by the formula r=n×([IM]/[GI]), where n is the valency of said multivalent ions, [IM] is the molar concentration of multivalent ions, [GI] is the molar concentration of ionizable groups GI, being between 0.3 and 10.