Abstract:
A thiolated eutragit microsphere drug carrier for oral administration is provided to minimize the reduction of drug at low pH concentration and enhance the availability of drug. A method for manufacturing a thiolated eutragit microsphere drug carrier for oral administration comprises: a step of reacting L-cysteine hydrochloride with eutragit to obtain thiolated eutragit; a step of resolving thiolated eutragit in organic solvent to make thiolated eutragit solution; a step of resolving protein drug in distilled water to make drug solution; a step of adding protein drug solution in thiolated eutragit solution and treating with ultrasonic wave; a step of adding surfactant solution; and a step of solvent from water/oil/water emulsion and centrifuging.
Abstract:
A chitosan particle coated with thiolated eudragit, in which the BSA(Bovine Serum Albumin) is soaked, is provide to use as a delivery agent of a drug by oral administration. A manufacturing method of a chitosan particulate for a protein oral administration coated with eudragit having a pH sensitivity and mucous adhesive property comprises: a step of sonicating and centrifuging the chitosan solution to obtain chitosan particle; a step of adding BSA to the chiotsan particle, suspending to distribute the chitosan particle, and stirring at 35-40°C for 12-24 hours to soak the BSA into chitosan particle; and a step of adding the thiolated eudragit solution to the BSA-soaked chitosan particle, stirring and centrifuging to obtain the chitosan particle coated with BSA-dipped thiolated eudragit. The addition rate of the thiolated eudragit solution to the BSA-dipped chitosan particle is 1:1-1:4.
Abstract:
본 발명은 보데텔라 브론키셉티카 데모네크로톡신 ( Bordetella bronchiseptica Dermonecrotoxin , BBD)이 담지된 키토산 미립자, 상기 키토산 미립자를 포함하는 돼지의 위축성 비염 예방용 백신 조성물 및 상기 백신 조성물의 돼지에의 투여방법에 관한 것이다. 본 발명의 백신 BBD가 담지된 키토산 미립자를 사용함으로써 독성 없이 저렴하게 돼지에서 위축성 비염에 대한 면역반응을 효과적으로 일으킬 수 있다.