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  3. .博碩士學位論文
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  5. 重度海洋性貧血患者服用地拉羅司之劑量與穩態藥物血中濃度關聯性探討
 
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重度海洋性貧血患者服用地拉羅司之劑量與穩態藥物血中濃度關聯性探討

Other Title
Relationship of Deferasirox Doses and Steady-State Serum Concentrations in Thalassemia Major Patients
Type
thesis
Date Issued
2012-06-19
Author(s)
郭佩欣
Advisor
吳姿樺
Subjects
系所名稱:藥學研究所
Publisher
藥學研究所
Description
學位別:碩士
語文別:中文
指導教授:吳姿樺
共同指導教授:
口試委員:黃耀斌;林凱信;葉健全;許光陽
中文關鍵字:海洋性貧血;地拉羅司;地拉羅司鐵螯合物;療劑監測;血清儲鐵蛋白
Abstract
重度海洋性貧血患者終生需要定期的輸血治療而導致病患體內鐵質過度負荷,因而需要接受適當之鐵螯合劑治療,以減少發生致命性併發症的風險。地拉羅司(deferasirox,DEFR)為每日一次口服的鐵螯合劑,過去研究指出多數病人可減少體內鐵質的累積;然而,有少部份病患使用地拉羅司治療後,未能改善其體內鐵質之過度負荷。本研究動機在於建立該藥物分析方法,並應用於接受地拉羅司治療之重度海洋性貧血患者,進行穩態地拉羅司及其鐵螯合物(Fe-[DEFR]2)之療劑監測與評估,以作為未來病患個體化治療之參考。研究方法:利用高效液相層析儀搭配紫外光檢測器建立可同時分析地拉羅司及其鐵螯合物之分析系統,繼而應用於接受地拉羅司治療至少三個月以上之重度海洋性貧血患者,分析其服藥前與服藥後兩小時之穩態地拉羅司血中濃度(CDEFR)、穩態地拉羅司鐵螯合物血中濃度(CFe-[DEFR]2);所收錄之病患需完成一週用藥紀錄表以追蹤確認其服藥順從性,再以Pearson correlation統計分析藥物血中濃度(CDEFR、CFe-[DEFR]2、CDEFR+Fe-[DEFR]2)與劑量或患者當日血清儲鐵蛋白(serum ferritin,SF)檢驗數值之相關性。研究結果:本研究所建立之DEFR、Fe-[DEFR]2之藥物分析系統符合確效標準,且最低可定量濃度為5.36與0.63 μmole/L。所收錄之病患(n = 21,平均年齡26.1 ± 5.7歲)服藥後2小時,所測得之CDEFR或CDEFR+Fe-[DEFR]2與病患每公斤體重所投與的DEFR毫克劑量(mg/kg)具有顯著相關性(p < 0.05);且CDEFR+Fe-[DEFR]2與病患所投與的總毫克劑量(mg)也具有顯著相關性(p < 0.05)。服藥前與服藥後2小時之總藥物 (DEFR+Fe-[DEFR]2)經總劑量校正後之藥物血中濃度(C/D比值)平均值分別為50.87 ± 34.20 μmole/L/g(7.57~166.28)與99.56 ± 44.12 μmole/L/g(44.22~220.18)。排除掉2位病患後,DEFR、Fe-[DEFR]2以及總藥物(DEFR+Fe-[DEFR]2)經總劑量校正後之藥物血中濃度(C/D比值)與患者當日SF檢驗數值皆無顯著相關性(n = 19);比較各項平均C/D比值,僅服藥後2小時Fe-[DEFR]2之平均C/D比值在病患SF較高族群有較低趨勢:在SF(μg/mL)小於1000(n = 4)、介於1000~2500(n = 11)與大於2500(n = 4)之各病患族群,其平均C/D比值分別為5.71 ± 1.03、4.79 ± 1.61與3.70 ± 1.22 μmole/L/g。結論:本研究所建立之DEFR與Fe-[DEFR]2分析方法可應用於重度海洋性貧血患者之臨床療劑監測,服藥後2小時之CDEFR或CDEFR+Fe-[DEFR]2與劑量有顯著關聯性,但各藥物血中濃度經總劑量校正之數值分佈情形顯示具個體差異;服藥後2小時地拉羅司鐵螯合物經總劑量校正之血中濃度偏低是否能應用於藥效預測,則需進一步的研究。
URI
https://203.71.86.71/handle/123456789/11206

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