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·药学研究·
PELGE-克班宁纳米粒在家兔体内的药动学研究 Δ
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孔淑君 1,2* ,蔡俊飞 ,孙杏倩 ,刘云宽 ,马云淑 (1.云南中医药大学中药学院,昆明 650500;2.迪沙药业集团
有限公司,山东 威海 264200;3.云南省高校芳香药重点实验室,昆明 650500;4.云南省高校外用给药系统与
制剂技术重点实验室,昆明 650500)
中图分类号 R965 文献标志码 A 文章编号 1001-0408(2020)07-0778-04
DOI 10.6039/j.issn.1001-0408.2020.07.03
摘 要 目的:研究聚乙二醇-(聚乳酸-羟基乙酸)-聚乙二醇三嵌段共聚物(PELGE)-克班宁纳米粒(PELGE-Cre-NPs)在家兔体内
的药动学。方法:取 6 只家兔,耳缘静脉注射 PELGE-Cre-NPs(3.5 mg/kg),分别于给药后 5、15、30、60、90、120、150、180、240、300
min时,于其耳缘静脉采血1 mL。分离血浆,用乙酸乙酯萃取Cre,并采用高效液相色谱法,以盐酸维拉帕米为内标,测定Cre的血
药浓度,然后采用 DAS 2.0 软件绘制血药浓度-时间曲线并计算药动学参数。色谱条件采用色谱柱为 Agilent ZORBAX Ex-
tend-C18,流动相为甲醇-0.01%三乙胺溶液(75 ∶ 25,V/V),流速为1 mL/min,检测波长为280 nm,柱温为30 ℃,进样量为20 μL。结
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果:Cre检测血药浓度的线性范围为45.0~3 600 µg/L(R =0.999 9),日内、日间精密度试验和稳定性试验的RSD均小于5%(n=6
或 n=12),准确度为(97.44±2.41)%~(98.45±3.87)%(n=6)。PELGE-Cre-NPs 在家兔体内分布符合二室模型;主要药动学参
数t1/2为(109.357±33.917)min,CL为(0.016±0.001)L/(min·kg),MRT为(76.733±7.502)min,cmax为(3 699.458±287.713)μg/L。结
论:PELGE-Cre-NPs在家兔体内的半衰期较Cre注射剂长,滞留时间延长,有缓释效果。
关键词 聚乙二醇-(聚乳酸-羟基乙酸)-聚乙二醇三嵌段共聚物-克班宁纳米粒;药动学;家兔;血药浓度
Pharmacokinetics Study of PELGE-crebanine Nanoparticles in Rabbits
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KONG Shujun 1,2 ,CAI Junfei ,SUN Xingqian ,LIU Yunkuan ,MA Yunshu (1.College of TCM,Yunnan
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University of TCM,Kunming 650500,China;2.Disha Pharmaceutical Group Co.,Ltd.,Shandong Weihai
264200,China;3.Yunnan Key Laboratory of Aromatic Drugs in Universities,Kunming 650500,China;4.
Yunnan Key Laboratory of External Drug Delivery System and Preparation Technology in Universities,Kunming
650500,China)
ABSTRACT OBJECTIVE:To study the pharmacokinetics of PELGE-crebanine nanoparticles (PELGE-Cre-NPs) in rabbits.
METHODS:Totally 6 rabbits were collected,and injected with PELGE-Cre-NPs(3.5 mg/kg)via ear vein. 1 mL of blood samples
were collected at 5,15,30,60,90,120,150,180,240,300 min after administration from the ear vein. After the plasma were
isolated and Cre were extracted with ethyl acetate,HPLC method was adopted to determine the plasma concentration of Cre by
using verapamil hydrochloride as internal standard. The plasma concentration-time curve was drawed and pharmacokinetic
parameters were calculated by using DAS 2.0 software. Chromatographic conditions such as the chromatographic column was
Agilent ZORBAX Extend-C18;the mobile phase consisted of methanol-0.01% triethylamine solution(75 ∶ 25,V/V);the flow rate
was 1 mL/min;the detection wavelength was 280 nm;the column temperature was 30 ℃ ;the injection volume was 20 μ L.
RESULTS:The linear range of Cre were 45.0-3 600 µg/L(R =0.999 9). RSDs of inter-day and intra-day precision and stability
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tests were all lower than 5%(n=6 or n=12);the accuracies were(97.44±2.41)%-(98.45±3.87)%(n=6). PELGE-Cre-NPs
was in a two-compartment model in rabbits. Main pharmacokinetic parameters included that t1/2 was(109.357±33.917)min;CL
was(0.016±0.001)L/(min·kg);MRT was(76.733±7.502)min;cmax was(3 699.458±287.713)μg/L. CONCLUSIONS:The
half-life period of PELGE-Cre-NPs in rabbits is longer than that of Cre injection;its retention time in the body is prolonged,and
sustained-release effect is obvious.
KEYWORDS PELGE-crebanine nanoparticles;Pharmacokinetics;Rabbit;Plasma concentration
Δ 基 金 项 目 :国 家 自 然 科 学 基 金 资 助 项 目(No.81673682,
No.81260651);云南省科技厅-云南中医学院应用基础研究联合专项
克班宁(Crebanine,Cre)是从防己科千金藤属云南
重点项目(No.2018FF001008)
地不容(Stephania yunnanensis H.S.Lo)及其同属植物的
*硕士。研究方向:中药药剂学。E-mail:1150198416@qq.com [1-2]
# 通信作者:教授,硕士生导师,博士。研究方向:药剂学。E- 块茎中提取的一种异喹啉阿朴菲型生物碱 。实验研
mail:yunshuma2@126.com 究证明,Cre 对多种实验性心律失常具有较强的抑制作
·778 · China Pharmacy 2020 Vol. 31 No. 7 中国药房 2020年第31卷第7期