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  5. 腎臟有機陰離子運輸蛋白1於家兔體內給予藥物交互作用之藥物動力學研究
 
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腎臟有機陰離子運輸蛋白1於家兔體內給予藥物交互作用之藥物動力學研究

Other Title
Pharmacokinetics studies of drug-drug interactions on renal organic anion transporter 1 in rabbits
Type
thesis
Date Issued
2011-06-30
Author(s)
賴麒開
Advisor
許光陽
Subjects
系所名稱:藥學研究所
Description
學位別:碩士
語文別:中文
指導教授:許光陽
共同指導教授:
口試委員:何意;鮑力恆
中文關鍵字:藥物動力學,家兔,運輸蛋白,藥物交互作用
Abstract
Indomethacin(INDO)與Ketoprofen(KETO)為非類固醇類抗發炎藥廣泛地利用在各種炎症的緩解與治療,在臨床上陸續發現其與藥物間的交互作用,以及在體外實驗中,發現其與有機陰離子運輸蛋白1(Organic anion transporter 1; OAT1)間的交互作用有關,p-Aminohippuric acid(PAH)為測量腎小管主動分泌的指標物質,且其對腎臟上OAT1具有高度的親和力與專一性,本實驗以靜脈注射的方式分別投予INDO、KETO至紐西蘭大白兔體內,並同時靜脈注射投予同莫耳數的PAH,以探討INDO以及KETO與PAH間藥物動力學上的變化,藉以瞭解其與OAT1之間的交互作用,並更進一步投予多劑量INDO與KETO,使其血中濃度達穩定狀態,分別討論其不同藥物動力學情況下的變化。
本實驗所得到的檢體經前處理後,以逆向高效液相層析法進行分析,其血中濃度的檢定,在濃度範圍內皆具有良好的線性關係、準確度以及精密度。單一劑量的KETO、INDO、PAH分別單獨給予至家兔體內,已觀察其個別的藥物動力學,隨後進行合併給藥實驗,合併給予單一劑量的INDO及PAH或是KETO及PAH,再進行多劑量投予INDO或是KETO,待其血中濃度達穩定狀態後,同時給予單一劑量的PAH加上KETO或是INDO;所得到的檢體經分析後,將血中濃度經計算所得到的藥物動力學參數,進行統計分析,結果顯示在合併給予單一劑量KETO時,兩者的藥物動力學參數皆有所變化,且在KETO血中濃度達到穩定狀態時,其變化更加明顯,PAH的總清除率(clearance; CL)下降(穩定狀態10.0 ± 1.9 vs 單一劑量11.5 ± 控制組0.8 vs 16.8 ± 1.8 mL/min/kg; p < 0.01),排除半衰期延長(117.2 ± 32.1 vs 86.0 ± 12.1 vs 54.4 ± 27.1 min; p < 0.03),KETO的CL也下降(61.4 ± 5.8 vs 74.6 ± 8.7 vs 166.3 ± 18.5 mL/min/kg; p < 0.01),且排除半衰期也有延長(315.0 ± 81.0 vs 423.2 ± 100.3 vs 154.7 ± 31.3 min; p < 0.02),且兩者其他藥物動力學參數也有變化,並具統計學上意義;而在合併給予INDO下,兩者的藥物動力學也產生變化,且在INDO達到穩定狀態下,其變化愈加顯著,PAH的CL下降(6.8 ± 0.8 vs 10.0 ± 1.9 vs 16.8 ± 1.8 mL/min/kg; p< 0.01),排除半衰期延長(188.5 ± 51.9 vs 123.7 ± 23.9 vs 54.4 ± 27.1 min; p < 0.02),而INDO的CL下降(27.2 ± 2.5 vs 56.3 ± 3.6 vs 128.2 ± 12.4 mL/min/kg; p < 0.01),排除半衰期延長(912.8 ± 98.0 vs 825.8 ± 141.7 vs 229.1 ± 76.4 min; p < 0.01),兩者的其他藥物動力學參數與控制組相比,皆有統計學上之明顯差異,以上統計結果,顯示在合併給藥下,PAH、KETO、INDO會互相影響彼此的藥物動力學,進一步以公式計算其個別的淨分泌清除率,可以發現在合併給藥下,PAH的主動分泌清除率下降(合併給予KETO:3.1 ± 1.7 vs 4.4 ± 0.7 vs 9.2 ± 1.6 mL/min/kg; p < 0.05;合併給予INDO:0.2 ± 0.7 vs 3.0 ± 1.2 vs 9.2 ± 1.6 mL/min/kg; p < 0.05),而KETO(43.0 ± 4.3 vs 55.2 ± 17.6 vs 123.5 ± 37.7 mL/min/kg; p < 0.05)及INDO(10.2 ± 1.5 vs 27.4 ± 5.4 vs 70.1 ± 18.3 mL/min/kg; p < 0.05)也有相同的情形,可以推論PAH與INDO及KETO在家兔腎臟上的OAT1發生競爭的情形,而導致其藥物動力學上的變化,這樣的實驗結果也與文獻中細胞實驗的結果有相似的情形。
URI
https://203.71.86.71/handle/123456789/13681

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