摘要:
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.
摘要:
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.The invention relates to an antidiabetic drug based on this long-acting insulin formulation and injectable using needles of gauge 29G, 30G or 31G.
摘要:
The invention relates to oral pharmaceutical compositions for the prevention and/or the treatment of viral diseases. This invention also addresses methods of prevention and/or treatment of these viral diseases, using these oral compositions. One of the main problems considered in the present invention is to enhance the efficiency of anti-viral treatments, especially against Hepatitis C virus by means of ribavirin, for example in combination with interferon. The oral ribavirin antiviral composition according to the invention increases the bio-absorption time of ribavirin, and thus improves the treatment of patients. Said composition comprises at least one modified release form of ribavirin, the bio-absorption time BAT of which is greater than the bio-absorption time BAT* of a reference* immediate release form of ribavirin administered at the same dose; BAT being preferably comprised between 2 and 15 h and more preferably between 4 and 12 h. Said composition is a reservoir type form or a matrix type form. Said composition is a gastric retentive system or a multiparticulate form.
摘要:
The invention relates to liquid pharmaceutical formulations for oral administration with the modified release of amoxicillin, said formulations consisting of suspensions of coated particles of amoxicillin (microcapsules). According to the invention, the microcapsules constituting the disperse phase of the suspension are designed to allow the modified release of the amoxicillin according to a profile that does not change during the storage of the liquid suspension. To do this the inventors propose the selection of a specific coating composition for the microcapsules which consists of at least four components that allow these microcapsules to be stored in water without modifying their properties of modified release of the amoxicillin, this liquid phase furthermore being saturated with amoxicillin.
摘要:
A plant treatment composition for application of an anionic exogenous chemical substance such as glyphosate herbicide to foliage of a plant is provided. The composition is a colloidal dispersion having supramolecular aggregates dispersed in an aqueous application medium. The supramolecular aggregates comprise one or more amphiphilic salt(s) having anions of the exogenous chemical substance and cations derived by protonation of one or more polyamine(s) or polyamine derivative(s) each having (a) at least two nitrogen-containing groups, of which a number n not less than 1 are amino groups that can be protonated to form cationic primary, secondary or tertiary ammonium groups, and (b) at least one hydrocarbyl or acyl group having about 6 to about 30 carbon atoms. The composition contains (i) a molar amount X in total of the exogenous chemical substance, in all salt and acid forms thereof present, sufficient to elicit a biological response when the composition is applied to the foliage of the plant at a rate of about 10 to about 1000 l/ha, (ii) a molar amount A in total of said polyamine(s) and derivative(s) thereof and cations derived therefrom, and (iii) a zero or molar amount B in total of one or more monovalent base(s) and cations derived therefrom, said base(s) being other than a polyamine or derivative thereof, such that nA/(nA+B) is about 0.01 to 1, and (nA+B)/X is about 0.5 to about 10.Also provided are a liquid concentrate composition which, upon dilution with water, forms a plant treatment composition as described above, and a process for making such a liquid concentrate composition. Plant treatment compositions of the invention are useful for eliciting a biological activity, for example herbicidal activity, in a plant when applied to foliage thereof.
摘要:
Novel nonlinearly optically active compound's, well suited for electrooptical applications, have the following general formulae: ##STR1## wherein D is an electron donor group; A and A.sub.1, which may be identical or different, are each an electron acceptor group; and R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each a lower alkyl radical or a hydrogen atom.
摘要:
Novel nonlinearly optically active compounds, well suited for electrooptical applications, have the following general formulae: ##STR1## wherein D is an electron donor group; A and A.sub.1, which may be identical or different, are each an electron acceptor group; and R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each a lower alkyl radical or a hydrogen atom.
摘要:
The invention relates to solid microparticulate oral dosage forms having a composition that prevents the misuse of the active pharmaceutical ingredient (API) contained therein. The aim of the invention is to prevent the improper use of solid oral drugs for any use other than the therapeutic use(s) officially approved by the appropriate public health authorities. Another aim of the invention is to provide novel analgesic drugs which can be used to: prevent the misuse of, and addiction to certain analgesics and/or to control plasma concentration variability and/or to facilitate oral; administration; and/or to combine analgesics with one another and/or with one or more active ingredients in the same oral form. More specifically, the invention relates to a solid oral drug form comprising anti-misuse means and at least one active ingredient, which is characterized in that: at least part of the active ingredient is contained in microparticles; and the anti-misuse means comprise anti-crushing means (a) which enable the microparticles of the active ingredient to resist crushing, such as to prevent the misuse thereof. According to the invention, the drug form can also comprise means (b) for preventing the misuse of the active ingredient following a possible liquid extraction process.
摘要:
The present invention relates to novel pharmaceutical formulations based on stable, fluid aqueous colloidal suspensions for the prolonged release of an interleukin (IL) (and one or more other possible active principles), and to the applications, especially therapeutic applications, of these formulations. The object of the invention is to propose a fluid pharmaceutical formulation for the prolonged release of interleukin(s) (and one or more other possible active principles) that makes it possible, after parenteral injection, significantly to increase the in vivo release time of the IL while at the same time reducing the plasma concentration peak of this IL, said formulation furthermore being stable on storage and also being biocompatible, biodegradable, non-toxic and non-immunogenic and having a good local tolerance. The formulation according to the invention is an aqueous colloidal suspension of low viscosity based on submicronic particles of water-soluble biodegradable polymer PO carrying hydrophobic groups (HG), said particles being non-covalently associated with at least one interleukin (and one or more other possible active principles) and forming a gelled deposit at the injection site, this gelling being caused by a protein present in the physiological medium.
摘要:
The invention concerns a galenic system with prolonged/controlled release of the medicinal and/or nutritional active principle, for oral administration. The aim is to provide a system enabling to obtain with one single tolerable and acceptable dose of active principle, efficient therapeutic protection over 24 hours (increasing the bioabsorption time without affecting bioavailability). To achieve this, the invention provides a composition comprising two controlled release systems associated in series, namely: individualised coated particles (microcapsules) of active principle forming an internal phase, the coating comprising a film-forming polymer P1 (ethylcellulose), a nitrogenous polymer (polyvinylpyrrolidone), a softener (castor oil) and a lubricant (magnesium stearate), and an external phase of functional carriers: polyelectrolytic hydrophilic polymer: (alginate), neutral hydrophilic polymer (hydroxypropylmethylcellulose) and a gelling additive (calcium acetate), said composition spontaneously forming in the presence of water, a cohesive and stable composite macroscopic solid, wherein the external continuous phase is a gelled matrix including the active principle microcapsules. The invention is useful for delayed oral galenic formulation of metformin.