摘要:
A stabilized semi-solid delivery vehicle contains a polyorthoester and an excipient, and a pharmaceutical composition contains an active agent, optionally a stabilizing agent, and the delivery vehicle. The pharmaceutical composition may be a topical, syringable, or injectable formulation; and is suitable for local delivery of the active agent. Methods of treatment are also disclosed.
摘要:
Bioerodible poly(ortho esters) useful as orthopedic implants or vehicles for the sustained delivery of pharmaceutical, cosmetic and agricultural agents from dioxane-based di(ketene acetals). Block copolymers contain these bioerodible poly(ortho esters). These block copolymers have both hydrophilic and hydrophobic blocks. They form micelles in aqueous solution, making them suitable for encapsulation or solubilization of hydrophobic or water-insoluble materials; and they also form bioerodible matrices for the sustained release of active agents.
摘要:
This invention relates to graft copolymer delivery vehicles comprising a polyethyleneglycol-poly(ortho ester), and to controlled release pharmaceutical compositions comprising the delivery vehicle and an active agent. The graft copolymer delivery vehicles may be thermogels graft copolymers. The pharmaceutical compositions may be in the form of a topical, syringable, or injectable formulation for local controlled delivery of the active agent.
摘要:
Polymers useful as orthopedic implants or vehicles for the sustained delivery of pharmaceutical, cosmetic and agricultural agents are prepared in such a manner that the rate and degree to which they are hydrolyzed can be controlled without addition of exogenous acid. This control results from the incorporation of esters of short-chain .alpha.-hydroxy acids such as esters of glycolic acid, lactic acid or glycolic-co-lactic acid copolymer into the polymer chain and variation of the amount of these esters relative to the polymer as a whole.
摘要:
Bioerodible ortho ester polymers useful for preparing bioerodible pharmaceutical compositions such as implants, ointments, creams, gels and the like are provided. The pharmaceutical compositions of the invention are useful for the controlled release of therapeutic agents, and may be administered for a variety of purposes, such as for the treatment of deep wounds, including burns, and for the treatment of periodontal disease.
摘要:
A method of percutaneously administering a physiologically active agent which comprises applying to the skin of a mammal a physiologically active agent in a carrier system which comprises at least one adjuvant, at least one solvent and at least one diol and/or triol moderator. The adjuvant can be selected from aliphatic hydrocarbons, halogen substituted aliphatic hydrocarbons, alcohol esters of aliphatic carboxylic acids, mono- or di-ethers, ketones, higher monoalcohols or mixtures thereof. The solvent can be selected from thioglycerols, lactic acid and esters thereof, cyclic ureas, compounds represented by the general formula R.sub.1 R.sub.2 NCONR.sub.3 R.sub.4, pyrrolidone-type compounds, amides, lactones or mixtures thereof.
摘要翻译:一种经皮施用生理活性剂的方法,其包括将至少一种佐剂,至少一种溶剂和至少一种二醇和/或三醇调节剂施用于载体体系中的哺乳动物皮肤上的生理活性剂。 佐剂可以选自脂族烃,卤素取代的脂族烃,脂族羧酸的醇酯,单醚或二醚,酮,高级一元醇或其混合物。 溶剂可以选自硫代甘油,乳酸及其酯,环脲,由通式R 1 R 2 NCONR 3 R 4表示的化合物,吡咯烷酮型化合物,酰胺,内酯或其混合物。
摘要:
Bioerodible ortho ester polymers useful for preparing soft form bioerodible pharmaceutical compositions such as ointments, creams, gels and the like are provided. A novel synthetic method for preparing the polymers is provided as well. Synthesis involves a one-step reaction between a monomeric ortho ester and a triol. The pharmaceutical compositions of the invention are useful for the controlled release of therapeutic agents, and may be administered for a variety of purposes, such as for the treatment of deep wounds, including burns, and for the treatment of periodontal disease.
摘要:
Polymers are provided that are useful for making biodegradable sustained release agent dispensers and which contain at least one of the following mer units (I) and (II) ##STR1## wherein X is a quadrivalent organic grouping, A and B are hydrogen or lower alkyl, and R is hydrocarbyl or oxyhydrocarbyl of 1 to 14 carbon atoms and, if oxyhydrocarbyl, containing 1 to 4 oxy groups, and may be either aliphatic or aryl, unsubstituted or substituted with one or more lower alkyl, amino, nitro or halogen moieties. Methods of synthesizing the novel polymers are also provided, as biodegradable beneficial agent dispensers prepared using the novel polymers.
摘要:
A method of percutaneously administering a physiologically active agent which comprises applying to the skin of a mammal a physiologically active agent in a carrier system which comprises at least one adjuvant and at least one solvent. The adjuvant can be selected from higher monoalcohols or mixtures thereof. The solvent can be selected from thioglycerols, lactic acid and esters thereof, cyclic ureas, compounds represented by the general formula R.sub.1 R.sub.2 NCONR.sub.3 R.sub.4, pyrrolidone-type compounds, amides, lactones or mixtures thereof.
摘要翻译:一种经皮给药生理活性剂的方法,其包括向包含至少一种佐剂和至少一种溶剂的载体体系中的哺乳动物的皮肤施用生理活性剂。 佐剂可以选自更高级的一元醇或其混合物。 溶剂可以选自硫代甘油,乳酸及其酯,环脲,由通式R 1 R 2 NCONR 3 R 4表示的化合物,吡咯烷酮型化合物,酰胺,内酯或其混合物。
摘要:
Water soluble polyacetals having molecular weights from about 5,000-30,000 are formed by condensing three monomers, e.g. a divinyl ether, a water soluble glycol and a diol. The invention is used for the bioerodible controlled release of therapeutic agents from the polyacetal hydrogel.