Abstract:
The present invention relates to glycol chitin derivatives having temperature-sensitive sol-gel transition, method for preparing the same, and a hydrogel prepared by cross linking and, more specifically, to glycol chitin derivatives having sol-gel transition at a specific temperature and including double bond in molecular structure, a method for preparing the same, and a hydrogel prepared by cross linking reaction of double bond of the glycol chitin derivatives. The glycol chitin derivatives and the hydrogel prepared by cross linking the same have excellent biocompatibility to be applied to various fields like the medical field, bio field, electronic field, etc.
Abstract:
The present invention relates to glycol chitosan derivative having hydrophobic substituent, to a method to prepare same and to a use of the same. More specifically, the glycol chitosan derivative of the present invention is configured in that a portion of the amine group in the number 2 position is substituted with an acetyl group and a hydrophobic group. The glycol chitosan derivative has thermo-sensitive characteristics which might cause reversible sol-gel transition at a specific temperature, thereby can widely be applied in the medical field, bio field, electronic field, etc.
Abstract:
PURPOSE: A method for preparing a pranlukast nano solid dispersant is provided to improve solubility and thermodynamic stability and to suppress recrystallization. CONSTITUTION: A method for preparing a pranlukast nano solid dispersant comprises: a step of uniformly mixing 1g of pranlukast, 2-6g of polyethylene glycol, and 0.1-3g of poloxamer surfactant; a step of fusing and drying the mixture; and a step of dissolving the dried material in a solvent and removing the solvent. The pranlukast nano solid dispersant contains pranlukast, polyethylene glycol, and poloxamer. The particle size of the pranlukast nano solid dispersant is 250-350 nm.
Abstract:
PURPOSE: A glycol chitosan derivative is provided to have improved solubility to organic solvent, to form nanosized self aggregate, and to have thermo-sensitive sol/gel phase transition behavior, thereby using for drug delivery system. CONSTITUTION: A glycol chitosan derivative has a structure of chemical formula 1. In chemical formula 1, n is the integer of 10-10000. The acetylation degree of the glycol chitosan derivative is 20-90%. A manufacturing method of the glycol chitosan derivative in chemical formula 1 comprises a step of acetylation of glycol chitosan in chemical formula 1 to an acetylating agent. The acetylating agent is acetic anhydride. The drug delivery system comprises the chitosan derivative.
Abstract:
본 발명은 생분해성 광활성 물질이 봉입된 복합체 자기-조립 나노입자 및 이를 포함하는 광감작제에 관한 것으로, 상기 복합체 자기-조립 나노입자는 신규혈관형성과 암 성장 억제에 대한 헤파린과 생분해성 광활성 물질의 시너지 효과를 얻을 수 있을 뿐 아니라 소수성 광민감제인 생분해성 광활성 물질의 암세포로의 효율적인 전달을 가능케 하여 광역학치료법을 통한 암치료에 크게 기여할 것이다.
Abstract:
본 발명은 고분자 마이셀 약물 조성물 및 이의 제조방법에 관한 것으로, 더욱 상세하게는 폴리알킬렌글리콜을 포함하는 친수성 블록과, 폴리락타이드, 폴리글리콜라이드 및 이들의 공중합체로 이루어진 군에서 선택된 1종의 소수성 블록으로 이루어진 양친성 이중 블록 공중합체; 및 피오글리타존(pioglitazone), 로지글리타존(roziglitazone), 트로글리타존(troglitazone), 및 이들의 혼합물로 이루어진 군에서 선택된 1종의 난용성 약물을 포함하는 고분자 마이셀 약물 조성물 및 이의 제조방법에 관한 것이다. 상기 고분자 마이셀 약물 조성물은 난용성 약물인 피오글리타존, 로지글리타존 및 트로글리타존을 효과적으로 가용화하고, 이때 사용되는 양친성 이중 블록 공중합체의 조성을 변화시켜 상기 난용성 약물의 봉입 함량 및 봉입 효율을 극대화하고 방출 거동을 용이하게 제어할 수 있다. 고분자 마이셀, 약물, 봉입 효율
Abstract:
The present invention relates to an eprosartan solid dispersant with improved bioavailability, a method for manufacturing the same, and a use thereof and, more specifically, to an eprosartan solid dispersant comprising amorphous eprosartan by including eprosartan, a hydrophilic polymer, and a surfactant via spray drying, a method for manufacturing the same, and a use thereof. The eprosartan solid dispersant is manufactured for eprosartan to have an amorphous crystal structure. The eprosartan solid dispersant can be used as a therapeutic agent for preventing or treating hypertension, congestive heart failure, and renal failure by improving solubility and dissolution rate of eprosartan, thereby improving bioavailability of eprosartan. [Reference numerals] (AA) Eprosartan; (BB) Example 1; (CC) Example 2; (DD) Example 3