Abstract:
PURPOSE: A paclitaxel mixed composition, its water-in-oil type emulsion formulation for chemoembolization and a preparation method thereof are provided, thereby improving stability of the emulsion formulation, and applying the paclitaxel to artery chemoembolization. CONSTITUTION: The paclitaxel mixed composition comprises 50 to 98.9%(v/v) of oily contrast media containing 0.01 to 1%(w/v) of paclitaxel, and 0.1 to 50%(v/v) of water-soluble contrast media. The water-in-oil type emulsion formulation for chemoembolization comprises 50 to 98.9%(v/v) of oily contrast media, 0.1 to 50%(v/v) of water-soluble contrast media, and 0.01 to 1%(w/v) of paclitaxel, wherein the oily contrast media are iodized oil containing 30 to 50% of iodine content selected from iodized poppy seed oil, ethiodol and iodized soybean oil; the water-soluble contrast media are selected from Metrizamide, Diatrizoate, Ioxaglate, Iopentol, Iopamidol, Iomeprol, Iotrolan, Iohexol, Ioversol, Ioxilan, Iopromide, Iodixanol or Iobitridol.
Abstract:
The present invention relates to macroporous chitosan beads having 5-200 mum in size of relatively large and uniform pores that are distributed from surface to core region, and a preparation method thereof compring the following steps; by dropping chitosan solution, aqueous chitosan solution or their mixture into the low-temperature of organic solvent or liquid nitrogen; and by regulating pore size by phase separation method via temperature difference. The macroporous chitosan beads of the present invention make cell culture more efficient than the previous substrate, since cell can attach to them efficiently due to their large surface area, it is easy for cell to be injected into them and cell attached to them can exist longer due to their three-dimensional structure, therefore they can be used for a study about production of protein, abtibiotics, anticancer agent, polysaccharide, physiologically active agent, animal hormone, or plant hormone as well as a study about substitution of metabolic organs, cartilage or bone.
Abstract:
PURPOSE: Provided is a complex capable of forming a spherical self-aggregate similar to a micelle in an aqueous system by amphiphilicity containing both a hydrophobic group of an anticancer agent and a hydrophilic group of chitosan, thereby allowing a sustained release of the drug and increasing selectivity to cancer tissue. CONSTITUTION: The anticancer agent-chitosan complex having a diameter of 10 to 800nm comprises 1 to 70% by weight of a hydrophobic anticancer agent and hydrophilic chitosan having an average molecular weight of 10¬3 to 10¬6 and additionally a linker which is decomposed in an acid. The hydrophobic anticancer agent is selected from the group consisting of adriamycin, taxol, cis-platin, mitomycin-C, daunomycin and 5-fluorouracil.
Abstract:
PURPOSE: Provided are vaccine compositions for oral administration consisting of a protein antigen encapsulated in biodegradable alginate microspheres by the diffusion-controlled interfacial gelation technique which produces microspheres having less than 5μm of diameter, and to preparation process thereof. CONSTITUTION: The process for preparing the vaccine composition comprises the steps of: i) mixing aliquot of a protein antigen or a protein antigen including immune adjuvant with an alginate aqueous solution; ii) homogenizing by adding a mixture of the alginate and a protein antigen of step i) to n-octanol containing an emulsifier; iii) spraying n-octanol solution containing CaCl2 into the emulsion while stirring the whole emulsion slowly; iv) adding additional CaCl2 solution to saturate the emulsion, and curing microspheres; v) dehydrating microspheres by addition of dehydrating solvent; vi) collecting the microspheres on membrane filters and washing with alcohol, and then drying in vacuo.
Abstract:
PURPOSE: A B-triglyceride type fat emulsifier and triglyceride or ethyl stearate type lipid corpuscle capable of transmitting an inductor DNA and biological activation medicine is provided. CONSTITUTION: The lipid corpuscle is composed of more than one kind of the lipid corpuscle material 2 to 30 % which is selected among triglyceride or ethyl stearate having 12 to 18 carbon atoms; more than one kind of an emulsifier 0.01 to 20 % which includes a cat ion surface active agent; water taking up the rest. The lipid corpuscle can keep a stable state in a test tube as well as a living body and efficiently transmit an inductor such as DNA, a physiological active material and medicine to the targeted cell.
Abstract:
약물이 포함된 수용액을 고분자화합물과 계면활성제가 유기용매에 용해된 유기용액에 분산, 교반시켜 에멀젼으로 만든 다음, 원하는 매트릭스 형태로 만들어 즉시 동결 건조하거나 상온에서 일정시간 즉 매트릭스 표면이 경화되기 시작할 때까지 건조시킨 후 다시 진공건조하여 다공성 매트릭스를 제조하는 것을 특징으로 함.
Abstract:
Sulfonated polyethyleneoxide derivs.(i), useful as an anticoagulating agent are prepd. by combining one or both end group of polyethyleneoxide derivs. with sulfonic acid group. Polethyleneoxide has a m.w. of 100-20,000. In formula R1=selected group from COOH,SO3H,SO3Na, R2=selected group from SO3H, SO3Na.