Applied Chemistry for Engineering, Vol.34, No.2, 161-169, April, 2023
나프록센이 각인된 생분해성 고분자 기반 다층 바이오소재의 제조 및 약물 방출 특성
Preparation and Drug Release Properties of Naproxen Imprinted Biodegradable Polymers Based Multi-Layer Biomaterials
초록
본 연구는 allbanggae starch (ABS), polyvinyl alcohol (PVA), alginic acid (SA)를 이용하여 naproxen (NP) 각인 starch 기반 다층 바이오소재를 제조하고, 물리화학적 특성과 약물 방출 제어 효과를 조사하였다. 또한, FE-SEM과 FT-IR 분석에 의해 제조한 다층 바이오소재의 특성을 조사하였다. 약물 방출 제어 효과와 경피 약물 전달 시스템의 적용 가능성을 확인하기 위해 NP 각인 다층 바이오소재로부터 NP 방출 특성을 사람의 체온인 36.5 ℃에서 다양한 pH buffer solution과 인공 피부를 이용하여 확인하였다. NP는 낮은 pH보다 높은 pH에서 1.3배 더 빠른 방출을 나타냈고, single-layer 바이오소재에서보다 multi-layer 바이오소재에서 약 4.0배 느린 방출이 일어남을 확인하였다. 인공 피부 방출에서도 동일하게 single-layer 바이오소재보다 multi-layer 바이오소재에서 약 4.0배 더 느린 약물 방출 결과를 나타내었다. 또한, double-layer와 triple-layer 바이오소재 모두 12시간 동안 지속적으로 NP가 방출되었음을 확인 하였다. NP 방출 mecha nism을 규명하기 위해 수학적 모델링에 적용하여 비교했을 때, pH buffer solution에서의 방출은 Fickian diffusion mecha nism, 인공 피부 방출은 empirical mechanism에 적합한 것을 확인하였다.
In this study, we prepared naproxen (NP) imprinted biodegradable polymer based multi-layer biomaterials using allbanggae starch (ABS), polyvinyl alcohol (PVA), and alginic acid (SA), and investigated their physicochemical properties and the con trolled drug release effects. In addition, the prepared multi-layer biomaterials were characterized by FE-SEM and FT-IR. In order to confirm the controlled drug release effect for the transdermal drug delivery system (TDDS), the NP release properties of NP imprinted multi-layer biomaterials were investigated using various pH buffer solutions and artificial skin at 36.5 °C. The results of NP release in various pH buffer solutions indicated that the NP release at high pH was about 1.3 times faster than that at low pH. In addition, NP release in multi-layer biomaterials was about 4.0 times slower than that in single-layer biomaterials. It was confirmed that the NP release rate in triple-layer biomaterials was 4.0 times slower than that in sin gle-layer biomaterials while using artificial skin. Also, it could be found that NP in double-layer biomaterials and triple-layer biomaterials was released sustainably for 12 h. The NP release mechanism in pH buffer solutions followed the Fickian dif fusion mechanism, but followed the non-Fickian diffusion mechanism with artificial skin.
Keywords:Transdermal drug delivery;Rheumatoid arthritis Naproxen;Controlled drug release effect;Release mechanism