Abstract:
본 발명은 경구 투여 시 생체 내 낮은 흡수율과 위장관 부작용을 나타내는 리세드로네이트에 피부 투과 가속제, 폴리아미노폴리카르복실릭계 킬레이트 첨가제, 또는 이들의 혼합물을 첨가한 조성물로서, 이온토포레시스를 통하여 경피 투여 하는 경우 위장관 부작용을 회피하면서도, 높은 체내 흡수율을 나타낼 수 있는 리세드로네이트 함유 경피 투여용 조성물에 관한 것이다.
Abstract:
PURPOSE: An immune enhancer composition containing polymer emulsifier as a stabilizing agent and a vaccine composition containing the same are provided to continuously maintain immunity and to ensure formulation stability. CONSTITUTION: An immune enhancer composition contains oil ingredient, non-ionic emulsifier, aqueous ingredient and polymer emulsifier of A-B-A type block copolymer. A and B are denoted by chemical formula 1 and 2, respectively. The molecular weight of A and B is 500-50,000 each. A polymer emulsifier is contained in 0.1-5.0 weight% based on total weight. The immune enhancer is an emulsion of water-in-oil form. A vaccine composition contains the immune enhancer composition and biologically acceptable amount of immunogenic material.
Abstract:
A diterpenoid alkaloid group drug solution is provided to become soluble in a water phase at a high concentration without a surfactant harmfulness to human body by including a lipid nano particle, to have a size distribution of a uniform particle and to be used as an injection having a high safety. A diterpenoid alkaloid group drug solution is manufactured by dispersing diterpenoid alkaloid group drug having a solid solution state and lipid nano particles in an aquatic medium. The lipid nano particles are manufactured by dispersing a lipid mixture comprising phospholipid, sterols, cationic lipid or anionic lipid and polyethylene glycol in an organic solvent. A mixing ratio of the phospholipid, the sterols, the cationic lipid or the anionic lipid and the polyethylene glycol is 3 ~ 8 : 2 ~ 6 : 1 ~ 5 : 0 ~ 3.
Abstract:
An anionic lipid nanosphere is provided to show increased encapsulation efficiency of an insoluble drug in an aqueous phase by introducing a polyethylene glycol(PEG) containing polyol onto the surface of particles formed from an anionic phospholipid, reduce toxicity of the drug against normal cells and increase in vivo circulation time of the drug by encapsulating a very strongly toxic drug into lipid nanosphere. An anionic lipid nanosphere for encapsulating an insoluble drug such as amphotericin B is characterized in that a PEG containing polymer is coated on the surface of particles formed by an anionic phospholipid. A method for preparing the anionic lipid nanosphere comprises the steps of: (a) mixing 100 parts by weight of lipid prepared by mixing phosphatidylcholine, anionic phospholipd and sterol in a weight ratio of 40-70:5-20:10-40 with 10-30 parts by weight of the polymer containing the PEG and dissolving a mixture in an organic solvent to prepare a lipid-PEG mixture solution; (b) dissolving an insoluble drug in C1-6 linear or branched alcohol to prepare a drug solution; (c) mixing the lipid-PEG mixture solution with the drug solution in a volumetric ratio of 1:1-1:9 to prepare a lipid-PEG-drug mixture solution; (d) dispersing the mixture solution into an aqueous phase in a volumetric ratio of 2:1-10:1 to form lipid nanosphere; and (e) after subjecting the lipid nanosphere solution obtained from the step(d) to distillation at a temperature of 20-50 deg.C under reduced pressure to remove the organic solvent therefrom, filtering it to prepare the anionic lipid nanosphere encapsulating the drug.
Abstract:
Provided are a polysuccinimide-based polymer which shows excellent polymer particle size control, biodegradability and contrast effect when nanoparticles are formed, and a contrast agent containing the polymer. The polysuccinimide-based polymer comprises a main chain having a molecular weight of 1,000-100,000; and a side chain which comprises a hydrophilic group having a molecular weight of 100-20,000 derived from D-lysine, L-lysine, D,L-lysine, polylysine, polyethylene glycol, poly(vinyl pyrrolidone), dextran, polyethylene oxide or poly(vinyl alcohol), a hydrophobic group derived from a C3-C80 amine or phospholipid, and a chelating group where a contrast agent selected from gadolinium, manganese, iron oxide, aluminum, silicon, barium, yttrium and rare earth elements is trapped.
Abstract:
본 발명은 수용성 산화철 나노 입자 및 이의 제조방법에 관한 것으로서, 더욱 상세하게는 산화철 전구체의 열분해법을 이용하여 정맥내 투여가 가능한 생체 적합적 고분자인 폴리비닐피롤리돈을 산화철 나노 입자 표면에 코팅함으로써 입자 크기를 제어할 수 있고 물에 잘 녹는 균일한 크기의 산화철 나노 입자를 제조하는 방법과 폴리비닐피롤리돈이 코팅된 수용성 산화철 나노 입자에 관한 것이다. 상기 수용성 산화철 나노 입자는 뛰어난 조영 효과를 가짐으로써 MRI 조영제로서 활용이 가능하다. 산화철, 나노 입자, 산화철 전구체, 열분해법, 폴리비닐피롤리돈, 코팅, MRI 조영제
Abstract:
본 발명은 자가미세유화형 약물전달시스템을 이용한 고지혈증치료용 약제 조성물에 관한 것으로서, 더욱 상세하게는 소수성 및 결정성이 큰 난용성의 고지혈증치료제의 생체 이용률을 향상시키기 위하여 스타틴류의 고지혈증 치료제 활성성분에 소정의 계면활성제와 용해제, 공계면활성제 및 제제의 안정성을 향상시키기 위해 항산화제를 배합 처방하여 나노에멀젼농축액을 제조하여 약물을 인체에 투여하였을 때 소화액 또는 체액에 의해 나노에멀젼을 형성하여 약물의 생체흡수성을 크게 개선시키고 장기보관시 활성성분이 산화되어 산으로 되는 것을 방지하여 안정성을 개선시킨 자가미세유화형 약물전달시스템을 이용한 고지혈증치료용 약제 조성물에 관한 것이다.
Abstract:
PURPOSE: A composition for producing sustained-release porous membrane for oral drug delivery system and the oral drug delivery system using the same sustained-release porous membrane are provided, which oral drug delivery system controllably and continuously releases drugs, reduces the coating cost by using a smaller amount of porous membrane, and has improved storage stability against humidity and temperature. CONSTITUTION: The composition for producing sustained-release porous membrane for oral drug delivery system comprises one or more film forming materials selected from cellulose-based compound, polymethacrylate, semipermeable polyamide and semipermeable sulfonated polystyrene; the film forming material comprises cellulose acetate and polymethylmethacrylate in a weight ratio of 2 -3:1-1.5. The oral drug delivery system comprises 0.1 to 50 parts by weight of a core containing pharmaceutical active components; and the sustained-release porous membrane containing one or more film forming materials selected from cellulose-based compound, polymethacrylate, semipermeable polyamide, semipermeable polyurethane and semipermeable sulfonated polystyrene.
Abstract:
PURPOSE: Provided is a controlled drug delivery system of a locally implantable agent which controls an initial release speed and duration of drug by adding a biodegradable polymer as a carrier and its monomers to reduce toxicity due to drug-overadministration and other adverse side effects. CONSTITUTION: The controlled drug delivery system of a locally implantable agent is characterized by including or dispersing an effective amount of drug in a mixture of 20-99 wt.% of a biodegradable polymer as a carrier and 1-80 wt.% of its monomers.
Abstract:
PURPOSE: Provided is a targeting drug delivery system containing melatonin by using multi-coating methods, thereby effectively regulating the speed of melatonin release. CONSTITUTION: In a targeting drug delivery system containing melatonin, it is characterized by consisting of a crystalline core(1), a coating layer(2) fixed to the outer surface of the crystalline core, an active ingredient layer(3) fixed to the outer surface of the coating layer, a sustained release layer(4) fixed to the outer surface of the active ingredient layer, and an enteric soluble layer(5) fixed to the outer surface of the sustained release layer.