KR102668218B1 - 항균 및 상처 치료용 주사가능한 하이드로겔 및 그 제조방법 - Google Patents
항균 및 상처 치료용 주사가능한 하이드로겔 및 그 제조방법 Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L26/00—Chemical aspects of, or use of materials for, wound dressings or bandages in liquid, gel or powder form
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- A—HUMAN NECESSITIES
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- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
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Abstract
Description
도 2는 소나무 유래 셀룰로오스 및 구형 나노셀룰로오스(s-NC)의 특성을 나타낸 그림.
(a) 셀룰로오스 및 s-NC의 FTIR 스펙트럼,
(b) s-NC의 AFM 이미지, 및
(c) 셀룰로오스 및 s-NC의 XRD 패턴.
도 3은 개발된 하이드로겔 지지체의 구조 및 형태학적 분석을 나타낸 그림으로,
(a) 하이드로겔의 FTIR 스펙트럼,
(b) 하이드로겔 지지체의 XRD 패턴,
(c) 하이드로겔 지지체의 SEM 형태, 및
(d) 개발된 하이드로겔 지지체의 팽창력.
도 4는 4000-2500 cm-1의 흡수 영역에서 개발된 하이드로겔의 FTIR 스펙트럼을 나타낸 그림.
도 5는 25 °C에서 개발된 하이드로겔의 기계적 강도 평가를 나타낸 그림으로,
(a) 하이드로겔의 저장 및 손실 계수,
(b) 하이드로겔의 해당 점도 복합체,
(c) 25°C에서 개발된 하이드로겔의 요변성 거동 분석, 및
(d) 주입된 하이드로겔의 이미지.
도 6 (a) 개발된 하이드로겔의 표면이 다른 접착력 조사, (b) 접착력 측정의 도식적 시연, (c) 접착 전단력 대 플라스틱에 의한 하이드로겔의 변위, (d) 접착력 플라스틱 기질이 있는 하이드로겔, 및 (e) 하이드로겔과 다른 표면의 가능한 상호 작용을 나타낸 그림,
도 7(a) 개발된 하이드로겔 지지체의 프로테아제 효소 분해율 분석, (b) 개발된 하이드로겔 지지체의 SBF 처리 14일 후 생체활성 조사한 그림,
도 8은 25mV/s 스캔 속도에서 개발된 하이드로겔의 전기화학적 분석을 나타낸 그림,
도 9는 개발된 하이드로겔 지지체의 피부 세포 증식 가능성 평가를 나타낸 그림으로, (a) HDF, (b) HaCaT, (c) HUVEC, (d) 공동 배양된 세포 및 (e) 공동 배양된 세포의 형광 형태의 생존 가능성.
도 10은 HDF에서 피부 관련 유전자 마커의 평가를 나타낸 그림으로, (a) HDF, (b) HaCaT, (c) HUVEC 유전자 마커, (d) 각각 피브로넥틴, 염기성 사이토케라틴 및 PECAM, HaCaT 및 HUVEC의 면역형광 이미지,
도 11은 개발된 하이드로겔의 항균력 평가를 나타낸 그림으로, (a) 처리 24시간 후의 콜로니 계수 방법 및 (b) 다른 시간 간격에서의 광학 밀도 측정 방법.
도 12는 3주령 ICR 쥐를 사용하여 개발된 하이드로겔 지지체의 상처 치유 가능성 평가를 나타낸 그림으로, (a) 관심 영역이 있는 사용된 쥐의 대표 이미지, (b) 이식된 스캐폴드가 있는 쥐, (c) 이식 7일 및 14일 후 상처 입은 쥐의 사진, (d) 7일 후 남은 상처 부위 및 치료 14일, (e) H&E 및 (f) 이식 14일 후 치유된 부위의 Masson Trichrome 염색.
샘플 | 차원 (cm) | Resistance (R) (ohm) | Conductivity =L/RA (S/cm-1) |
CMCS | 2.4 Х 0.9 Х 0.5 | 1629.73 | 6.817 Х10-5 |
CMCS/s-NC 1 | 2.3 Х 1.0 Х 0.3 | 1599.61 | 6.251 Х10-4 |
CMCS/s-NC 2 | 2.4 Х 0.9 Х 0.6 | 1572.22 | 7.067 Х10-4 |
CMCS/s-NC 4 | 2.2 Х 0.6 Х 0.4 | 864.39 | 2.892 Х10-3 |
Claims (12)
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- 카로복실메틸키토산 매트릭스에 구형 나노셀룰로오스를 첨가하여 제조된 하이드로겔을 유효성분으로 포함하는 고초균(Bacillus subtilis)에 대한 항균 활성을 가지는 항균용 조성물.
- 제8항에 있어서, 상기 하이드로겔은 구형 나노셀룰로오스를 상기 카로복실메틸키토산 매트릭스에 1 내지 4% (w/w) 첨가하여 제조되는 항균용 조성물.
- 삭제
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Dinesh K. Patel et al. "Multifunctional bioactive chitosan/cellulose nanocrystal scaffolds eradicate bacterial growth and sustain drug delivery."* |
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