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PLGA-吉西他滨缓释微球在荷胰腺癌裸鼠体内的药动学研究
引用本文:杨梅,李井泉,汤致强,赵平.PLGA-吉西他滨缓释微球在荷胰腺癌裸鼠体内的药动学研究[J].中国药学杂志,2010,45(4):295-298.
作者姓名:杨梅  李井泉  汤致强  赵平
作者单位:中国医学科学院肿瘤医院药剂科;中国医学科学院肿瘤医院腹部外科;
摘    要: 目的 研究PLGA(乳酸-羟基乙酸共聚物)-吉西他滨缓释微球在荷胰腺癌裸鼠体内的药动学特点,为该药的临床合理应用提供理论和实验依据。方法 对荷胰腺癌裸鼠分别进行PLGA-吉西他滨缓释微球间质化疗(A组,8.64 mg·kg-1),吉西他滨全身化疗(B组,8.64 mg·kg-1)和瘤体内给药化疗(C组,8.64 mg·kg-1)后,采集不同时间静脉血及恶性肿瘤、肝脏和肾脏组织,应用HPLC测定血浆和组织中的药物浓度,WinNolin4.0.1药动学软件计算主要药动学参数,t检验进行统计学分析。结果 血浆中A,B,C 3组的ρmax分别为(0.18±0.06),(1.765±0.329),(0.127±0.042)mg·L-1,A组与B组相比,P<0.05,t1/2分别为(120±10.6),(4.28±1.07),(6.32±1.25)h, tmax分别为(72±2.5),(0.33±0.09),(0.50±0.21)h,MRT分别为(56.8±10.9),(0.43±0.14),(0.19±0.04)h,AUC分别为(10.2±2.7),(0.13±0.03),(0.56±0.18)mg·h·L-1;肿瘤组织中A、B、C 3组的ρmax分别为(1.329±0.381),(0.462±0.150),(0.753±0.166)mg·L-1,A组与B、C组相比,P<0.05,t1/2分别为(97.39±8.93),(5.97±1.65),(2.15±0.58)h,tmax分别为(24±3.2),(4.0±1.2),(0.00±0.02)h,MRT分别为(399.8±20.8),(126.9±15.4),(117.8±10.7)h,AUC分别为(383.7±25.2),(56.83±6.73),(71.60±18.52)mg·h·L-1;肝脏中A、B、C 3组的ρmax分别为(0.734±0.152),(0.578±0.083),(0.85±0.19)mg·L-1,A组与B、C组相比,P>0.05,tmax分别为(72±6.2),(24±3.9),(72±4.5)h,MRT分别为(520.5±20.2),(111.7±19.4),(112.9±9.6)h,AUC分别为(1 325.9±86.5),(216.4±32.6),(108.8±29.1)mg·h·L-1;肾脏组织中A、B、C 3组的ρmax分别为(0.55±0.16),(0.458±0.137),(0.687±0.232)mg·L-1,A组与B、C组相比,P>0.05,tmax分别为(2.0±0.6),(8.0±2.3),(120±10.4)h,MRT分别为(462.1±28.6),(111.1±20.1),(119.6±18.6)h,AUC分别为(378.1±38.5),(29.42±10.64),(97.57±16.72)μg·h·mL-1。结论 PLGA-吉西他滨缓释微球间质化疗能够显著提高肿瘤局部的药物浓度,延长药物作用时间,减少化疗药物的全身毒副作用。

关 键 词:乳酸-羟基乙酸共聚物  吉西他滨  微球  胰腺癌  药动学
收稿时间:2012-01-01;

Study on Pharmacokinetics of PLGA-Gemcitabine Sustained-Release Microspheres in Nude Mice with Pancreatic Cancer
YANG Meia,LI Jing-quanb,TANG Zhi-qianga,ZHAO Pingb.Study on Pharmacokinetics of PLGA-Gemcitabine Sustained-Release Microspheres in Nude Mice with Pancreatic Cancer[J].Chinese Pharmaceutical Journal,2010,45(4):295-298.
Authors:YANG Meia  LI Jing-quanb  TANG Zhi-qianga  ZHAO Pingb
Institution:YANG Meia,LI Jing-quanb,TANG Zhi-qianga,ZHAO Pingb(a.Department of Pharmacy,b.Department of Abdominal Surgery,Cancer Hospital of China Academy of Medical Science,Beijing 100021,China)
Abstract:OBJECTIVE To study the pharmacokinetics of PLGA-gemcitabine sustained-release microspheres in nude mice with pancreatic cancer, to provide evidence of theories and experiments for its clinical application. METHODS Plasma, tumors, livers and kidneys were obtained after nude mice with pancreatic cancer received interstitial chemotherapy by PLGA-gemcitabine microspheres (A, 8.64 mg·kg-1), systemic chemotherapy (B, 8.64 mg·kg-1) and tumor regional chemotherapy (C, 8.64 mg·kg-1) by gemcitabine, respectively. Gemcitabine concentrations in plasma and tissues were measured using HPLC, the pharmacokinetic parameters were calculated by WinNolin 4.0.1 software, and t-test was used for statistical analysis. RESULTS The pharmacokinetic parameters of gemcitabine in mice plasma were as follows: ρmax (0.18±0.06), (1.765±0.329) and (0.127±0.042)mg·L-1 (A vs B, P<0.05); t1/2(120±10.6), (4.28±1.07) and (6.32±1.25) h; tmax (72±2.5), (0.33±0.09) and (0.50±0.21)h; MRT (56.8±10.9), (0.43±0.14) and (0.19±0.04) h; AUC (10.2±2.7), (0.13±0.03) and (0.56±0.18) mg·h·L-1 in group A, B and C. The pharmacokinetic parameters of gemcitabine in mice tumor were as follows: ρmax (1.329±0.381), (0.462±0.150) and (0.753±0.166) mg·L-1 (A vs B and C, P<0.05); t1/2 (97.39±8.93), (5.97±1.65) and (2.15±0.58) h; tmax (24±3.2), (4.0±1.2) and (0.00±0.02) h; MRT (399.8±20.8), (126.9±15.4) and (117.8±10.7) h; AUC (383.7±25.2), (56.83±6.73) and (71.60±18.52) mg·h·L-1. The pharmacokinetic parameters of gemcitabine in mice livers were as follows: ρmax (0.734±0.152), (0.578±0.083) and (0.85±0.19) mg·L-1 (A vs B, C, P>0.05); tmax (72±6.2), (24±3.9) and (72±4.5) h; MRT (520.5±20.2), (111.7±19.4) and (112.9±9.6) h; AUC (1 325.9±86.5), (216.4±32.6) and (108.8±29.1) mg·h·L-1. The pharmacokinetic parameters of gemcitabine in mice kidneys were as follows: ρmax (0.55±0.16), (0.458±0.137) and (0.687±0.232 )mg·L-1(A vs B, C, P>0.05); tmax (2.0±0.6), (8.0±2.3) and (120±10.4) h; MRT (462.1±28.6), (111.1±20.1) and (119.6±18.6) h; AUC (378.1±38.5), (29.42±10.64) and (97.57±16.72) mg·h·L-1. CONCLUSION Gemcitabine concentrations were significantly increased, action time was prolonged and toxicities were decreased after interstitial chemotherapy by PLGA-gemcitabine microsphere.
Keywords:PLGA  gemcitabine  microspheres  pancreatic cancer  pharmacokinetics  
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