용출율 개선을 위한 티카그렐러 고체분산체 제조 및 평가

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dc.contributor.advisor이범진-
dc.contributor.author오기원-
dc.date.accessioned2018-11-08T08:23:26Z-
dc.date.available2018-11-08T08:23:26Z-
dc.date.issued2017-08-
dc.identifier.other26028-
dc.identifier.urihttps://dspace.ajou.ac.kr/handle/2018.oak/13497-
dc.description학위논문(석사)--아주대학교 일반대학원 :약학,2017. 8-
dc.description.abstract본 연구는 용출율 개선 약물, 티카그렐러의의 고체분산체 제조 및 평가를연구한 논문이다. 티카그렐러는 클로피도그렐과 마찬가지로 혈소판의 ADP 수용체인 P2Y12수용체와 결합하여 혈전생성을 억제하는 약물이다. 하루 한번 75mg을 복용하는 클로피도그렐과 달리, 티카그렐러는 하루에 2번 90mg 을 복용하여야한다. 이를 극복하기 위해, 상기 실험에서 PVP K 30과 cremophor EL을 사용하여 용매증발법 고체분산체를 제조하였다. USFDA 용출법에서 티카그렐러는 0.2% tween 80 (w/v) 용출액에서 용출실험을 하였다. 하지만, 대조제제는 이와 같은 용출액에서 75분대 98% 이상의 용출율을 보여주어, 고체분산체 제형의 평가가 어려웠다. 보다 정확한 제형의 평가를 위해 용출액의 tween 80농도를 조절하여, 본 연구는 용출액 0.01% tween 80 (w/v) 장액에서 실행되었다. 고체분산체의 물리화학적 특징들을 DSC, PXRD 및 SEM을 통해 측정하였다. SEM, DSC 및 PXRD를 통해 무정형 티카그렐러 고체분산체 제조를 확인할수있었다. 용매증발법을 사용하여 제조한 티카그렐러 고체분산체 (78.55 ug/ml ± 0.32)는 75분대 대조제제에 (31.31 ug/ml ± 0.92) 비해 뛰어난 용출율을 보여주었다. 본 연구를 통해 무정형 티카그렐러 고체분산체는 우수한 용해도를 가지고 효과적으로 체내에 전달할 수 있다는 결론을 내릴수 있었다.-
dc.description.tableofcontentsI. INTRODUCTION 1 II. MATERIALS AND METHODS 5 1. Materials 5 2. Methods 5 3. Preparation of formulations 5 4. Compositions 5 5. Screening of solubilizers and carriers 8 6. Dissolution media 8 7. Solvent evaporation 10 8. Characterization 10 9. Scanning electron microscopy (SEM) 10 10. Powder x-ray diffraction (PXRD) 11 11. Differential scanning calorimetry (DSC) 11 12. In vitro dissolution 12 13. High performance liquid chromatography (HPLC) analysis 12 14. Characterization of powder properties 13 III. RESULTS AND DISCUSSION 14 1. Screening solubilizers and carriers 14 2. Dissolution media 17 3. SE formulations 19 4. Powder properties 26 5. Scanning electron microscopy (SEM) 29 6. Powder x-ray diffraction (PXRD) 31 7. Differential scanning calorimetry (DSC) 33 IV. CONCLUSION 35 V. REFERENCES 37-
dc.language.isoeng-
dc.publisherThe Graduate School, Ajou University-
dc.rights아주대학교 논문은 저작권에 의해 보호받습니다.-
dc.title용출율 개선을 위한 티카그렐러 고체분산체 제조 및 평가-
dc.title.alternativeEnhanced solubility and dissolution rate of ticagrelor in solid dispersions-
dc.typeThesis-
dc.contributor.affiliation아주대학교 일반대학원-
dc.contributor.department일반대학원 약학-
dc.date.awarded2017. 8-
dc.description.degreeMaster-
dc.identifier.localId788671-
dc.identifier.urlhttp://dcoll.ajou.ac.kr:9080/dcollection/jsp/common/DcLoOrgPer.jsp?sItemId=000000026028-
dc.subject.keywordTicagrelor-
dc.subject.keywordsolid dispersions-
dc.subject.keywordsolubility-
dc.subject.keywordsolvent evaporation-
dc.description.alternativeAbstractTicagrelor (TIC) is the first in a new class of P2Y12 receptor antagonist with limited solubility in water (<10μg/mL) and low oral bioavailability (e.g. 30~42%). The aim of this study was to improve the solubility and the oral bioavailability of ticagrelor, BCS class IV with low permeability and low solubility. The preliminary solubility of TIC was carried out in the presence of various solubilizers and carriers (1% w/v). Cremophor EL showed the highest solubility besides SLS. A novel TIC loaded solid dispersion was prepared by the solvent evaporation technique using cremophor EL and PVP K 30. Formulations significantly enhanced the dissolution rates up to 78%, performed in 0.01% tween 80 (w/v) 900 mL intestinal fluid (pH 6.8), which could be due to its transformation from crystalline to amorphous form as well as the attachment of hydrophilic carrier, PVP K 30, to the surface of poorly water-soluble TIC. To explain the increased dissolution rate of SDs, scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and powder X-ray diffraction (PXRD) were performed. SEM, DSC and PXRD studies indicated that amorphous and porous TIC loading solid dispersion was produced. As a result, it is believed that solid dispersions via solvent evaporation of cremophor EL and PVP K 30 containing TIC could provide an effective way to enhance dissolution rate of the poorly water soluble drug.-
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