Abstract:
본발명은기능성물질을포함하는천연유래다당류마이크로섬유제조방법에대한것으로, 상기제조방법은기존방법(Ex, 전기방사)과비교하였을때 저비용으로간단하고빠르게마이크로섬유를제조할수 있으며, 제조된마이크로섬유는균일한두께를가지며수상에용해될수 있고, 기능성물질의안정성을향상시킬수 있어이를접착성, 피막성, 보습성, 항산화능력또는노화방지등의기능을가지는화장품원료로사용될수 있다.
Abstract:
본 발명은 수용성 폴리아미노산; 또는 3차 아민을 함유하는 pH 감응성 물질이 접합된 폴리아미노산이 광응답제에 접합된 형태를 갖는, 광역학 치료를 위한 덴드리머(dendrimer) 형태의 수용성 광응답제에 관한 것으로, 본 발명에 따른 광응답제는 기존 광응답제에 비해 물에 대한 용해도가 우수하고 pH 변화에 의해 전하의 조절이 가능하며, 특히 수용액 상에서 활성산소종의 생성효율을 향상시킬 수 있어 우수한 광역학 치료의 효율을 높일 수 있는 특징이 있다.
Abstract:
본 발명은 소수성을 갖는 폴리에틸렌 소재 표면을 친수성으로 개질시키는 방법 및 이를 통해 제조된 친수성 개질된 폴리에틸렌 소재(예, 친수성 개질된 폴리에틸렌 소재의 스텐트)에 관한 것이다. 본 발명의 폴리에틸렌 소재 친수성 개질 방법은, 홍합 접착 단백질인 도파(Dopa)를 이용하여 폴리에틸렌 소재의 표면에 친수성 물질인 키토산(chitosan)을 효과적으로 도입시킬 수 있으므로, 이를 통해 제조된 폴리에틸렌 소재의 경우 표면에 친수성이 향상됨과 동시에 키토산의 다양한 기능성(혈중 콜레스테롤 감소 및 지방 흡수 저해 효과, 항암 효과, 면역력 강화 효과, 항당뇨 효과, 상처치료 효과 및 항균 활성)이 부여될 수 있다. 따라서 본 발명을 이용하는 경우, 폴리에틸렌 소재에 친수성 향상을 통한 생물학적 오염(결석, 기생충, 단백질 등의 이물질 흡착)을 방지할 수 있으며, 생체적합성 향상과 더불어 항균/항암과 같은 다기능성 부여가 가능함으로써 폴리에틸렌 소재를 사용하는 의약산업(생체 의료 장치)에 응용될 경우 그 가치가 매우 높을 것으로 기대된다.
Abstract:
The present invention relates to a method for modifying a stent surface of a polyethylene material with hydrophobic property to hydrophile property, and a hydrophobic modified polyethylene material (for example, stent of a hydrophobic modified polyethylene material) manufactured thereby. According to the present invention, a method for modifying a polyethylene material to hydrophile property is capable of effectively introducing chitosan, which is a hydrophile material, to the surface of a polyethylene material by using dopa, which is a mussel adhesive protein. The polyethylene material manufactured thereby is capable of improving the hydrophile property in the surface and having various functions (blood cholesterol reduction and fat absorption inhibiting effect, anticancer effect, immunity strengthening effect, antidiabetic effect, and wound healing effect and antibacterial activity) of chitosan. Therefore, the present invention has an effect for preventing the biological contamination (absorption of foreign substances including calculus, parasite, protein, etc) by improving the hydrophile property of the polyethylene material, and increasing the value when being applied to the pharmaceutical industry (biomedical device) using a polyethylene material since the biocompatibility can be improved and the multi-function such as antibiotic/anticancer can be applied.
Abstract:
본 발명은 광역학 진단 또는 치료에 유용하게 사용하기 위한 친수성 광감작제와 생체 적합성 고분자의 복합체 및 이의 제조방법에 관한 것으로, 더욱 상세하게는 생체 적합성 고분자와 친수성 광감작제가 이온 결합으로 결합되되, 상기 친수성 광감작제의 둘레를 상기 생체 적합성 고분자가 둘러싸도록 구성된 광역학 진단 또는 치료용 복합체 및 이의 제조방법에 관한 것이다. 본 발명에 따른 복합체는 수계에서 이온화되어 전하를 갖는 생체 적합성 고분자를 이용해 친수성 광감작제의 전하(고분자가 지니고 있는 전하와 상반되는 전하)와 결합시킴으로써 표면에 가지고 있는 전하로 인하여 암세포로의 내재화가 어려웠던 친수성 광감작제의 축적성을 우수하게 하여, 근적외선 조사시 암세포를 사멸하는 효과가 더욱 증가할 뿐만 아니라 혈액순환 과정에서 복합체가 안정적으로 유지됨으로써 정상 세포에 세포 독성을 나타내지 않아 체내 안정성에도 우수한 효과가 있으므로 광역학을 이용한 질병의 진단 또는 치료에 유용하게 사용할 수 있다.
Abstract:
The present invention relates to a composite of a hydrophilicity photosensitizer and a biocompatible polymer for being effectively used in photodynamic diagnosis or treatment and a method for manufacturing the same, and more particularly, to a composite for photodynamics diagnosis or treatment wherein the biocompatible polymer and the hydrophilicity photosensitizer are combined by an ionic bond and the biocompatible polymer surrounds the circumference of the hydrophilicity photosensitizer. The composite according to the present invention uses the biocompatible polymer having an electric charge by being ionized in a water system and binding with the electric charge (an electric charge opposite to the electric charge the polymer carries) of the hydrophilicity photosensitizer, and thereby providing excellent accumulation properties of the hydrophilicity photosensitizer wherein internalization to the cancer cell is difficult due to the electric charge on the surface thereof. Thus, the composites of the present invention not only further increases the effect of apoptosis of cancer cells during near infrared radiation but also is maintained stably during a blood circulation process such that cytotoxicity to normal cells are not displayed, and thereby exhibiting superior effects in in-vivo stability, and therefore, can be effectively used in diagnosis or treatment of diseases using photodynamics.
Abstract:
PURPOSE: A nanoion complex containing a hydrophilic cationic polymer photosensitizer derivative and an anionic polysaccharide quencher derivative for photodynamic therapy is provided to enhance accumulation rate to a cancer tissue and to generate single oxygen or free radical. CONSTITUTION: A nanoion complex for photodynamic therapy contains a hydrophilic cationic polymer photosensitizer derivative and an anionic polysaccharide quencher derivative. The hydrophilic cationic polymer photosensitizer derivative is a copolymer containing a cationic polymer conjugated with a photosensitizer.
Abstract:
PURPOSE: A composite for photodynamic therapy is provided to ensure excellent cancer tissue selectivity and biodegradation and to treat and diagnose cancer. CONSTITUTION: A composite for photodynamic therapy contains a biocompatible polymer and a photosensitizer which are combined by ester bond. The biocompatible polymer is a poly(ethylene oxide)-poly(propylene oxide) amphipathic block copolymer. The composite is a nanoparticle in an aqueous system. A method for preparing the composite comprises: a step of dissolving the poly(ethylene oxide)-poly(propylene oxide) amphipathic block copolymer in an organic solvent; a step of dissolving the photosensitizer and a catalyst; and a step of reacting.
Abstract:
PURPOSE: A bio-medical treatment device and a manufacturing method thereof are provided to modify the surface of the medical treatment device as hydrophilic property by coating the surface using a polymer including waveguide amino acid. CONSTITUTION: A bio-medical treatment device comprises dopa or dopamine which is adhesion amino acid of mussels so that the bio-medical treatment device has affinity towards the surface of the medical treatment device which is made of metal or non-metal material. The hydrophilic polymer has excellent hydrophilic property and bio compatibility by including polyethylene glycol and polyethyleneimine. The hydrophilic polymer is a polyethylene glycol - polyethyleneimine - poly waveguide (minn) copolymer which includes biocompatible polyethylene glycol and polyethyleneimine and hydrophilic dopa or dopamine. In the hydrophilic polymer, the polyethylene glycol and polyethyleneimine are chemically combined through the covalent bond.