摘要:
The aqueous ophthalmic formulation for the treatment and prevention of infections contains ofloxacin as active ingredient and a chitosan having a weight average molecular weight of 500,000-5,000,000 Daltons and a deacetylation degree of 30-90% as solubilizing agent of ofloxacin. Chitosan having a deacetylation degree of 30-90% may be also used for solubilizing ofloxacin suspended in an aqueous media having a substantially neutral pH in any other applications.
摘要:
The claimed invention relates to methods of modulating mucin synthesis and the therapeutic application of compounds in controlling mucin over-production associated with diseases such as chronic obstructive pulmonary diseases (COPD) including asthma and chronic bronchitis, inflammatory lung diseases, cystic fibrosis and acute or chronic respiratory infectious diseases.
摘要:
In one aspect, the present invention provides kits for reducing absorption of lipids by the gastrointestinal tract of a mammalian body. The kits include chitosan, packaging, and instructions indicating that the chitosan may be consumed with food. Chitosan useful for incorporation into kits of the present invention dissolves sufficiently rapidly in gastric juice that it does not have to be consumed in advance of a meal in order to dissolve within the stomach and thereafter effectively entrap lipids in the gastrointestinal tract of the consumer. In a particular embodiment of the kits of the present invention, the chitosan possesses the property of dissolving in a 100-fold (w/w) excess of 0.16N hydrochloric acid, at a temperature in the range of from 16null C. to 25null C., so that the maximum viscosity of the dissolved chitosan solution is reached within 5 minutes after the acid contacts the chitosan. It is desirable to utilize chitosan having a high tap density and/or high bulk density in the kits of the present invention. In another aspect, the present invention provides methods for reducing absorption of lipids by the gastrointestinal tract of a mammalian body. The methods include the step of providing a consumer with a kit including chitosan, packaging, and instructions indicating that the chitosan may be consumed with food. The kits of the present invention are useful in the practice of the methods of the present invention. By utilizing the kits and/or methods for lipid absorption reduction of the present invention a consumer does not have to remember to consume lipid-absorbing chitosan in advance of food consumption.
摘要:
The present invention provides a method for skin care by orally administering a skin care agent comprising an ingestible carrier and natural-type N-acetylglucosamine obtainable by hydrolysis of chitin with an acid, an enzyme, or an acid and an enzyme, wherein the natural-type N-acetylglucosamine is contained in an amount of from 0.1 to 99.9% by weight, by which the moisture and tension of skin can be improved and the rough skin and fine wrinkles can be prevented or ameliorated. The skin care agent may be a skin care agent containing chitinoligosaccharide in an amount of from 0.1 to 20% by weight and natural-type N-acetylglucosamine in an amount of from 0.1 to 99.9% by weight; or a skin care agent containing collagen peptide in an amount of from 0.1 to 99.9% by weight and natural-type N-acetylglucosamine in an amount of from 0.1 to 99.9% by weight.
摘要:
Stable, viscous, mucoadhesive aqueous compositions which are useful for the prevention and treatment of ulcerative, inflammatory, and/or erosive disorders of mucous membranes and/or the delivery of pharmaceutically active compounds to mucosal surfaces for topical treatment or transfer to the systemic circulation.
摘要:
An aqueous solution for prophylactic treatment of teats of lactating mammals, comprising as a first component at least partially deacetylated chitosan, or an acid addition salt thereof, in a concentration of up to about 2% by weight of chitosan, the solution having a pH of from about 4 to about 6.8, and said first component having a molecular weight such that the viscosity of the solution is less than about 50 mPas; and a method of prophylactic treatment of teats of lactating mammals.
摘要:
The present invention relates to a method for treating damaged or degenerated fat pads in a foot of a host in need thereof. The method comprises the step of injecting into the fat pad of the host a biocompatiable solution having physico-chemical and mechanical properties substantially similar to a fatty acid mixture normally present in a healthy fat pad.
摘要:
Stable salts of glutathione with polycations such as chitosan are described. The salts according to the invention are valuable for use as active constituents in pharmaceutical as well as cosmeceutical compositions.
摘要:
Application of nanoparticles based on hydrophilic polymers as pharmaceutical forms for the administration of active macromolecules. The nanoparticles (having a nanometric size and a hydrophilic character), also called nanospheres or latex, are colloidal systems comprised of the combination of hydrophilic polymers and an active ingredient having a high molecular weight (active macromolecule, molecular weight higher than 1000 daltons). The hydrophilic polymers are the chitosan (an aminopolysaccharide) or its derivatives and polyoxyethylene or its derivatives. The association of the active macromolecule to said nanoparticles takes place in an aqueous phase without having to use organic solvents or auxiliary toxic substances. The active ingredient charge capacity of the nanoparticles is extremely high and additionally said charge is released in a controlled and time extended way. Additionally, said nanoparticles have a positive surface electric charge whose intensity may vary in relation to its composition.