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羟基喜树碱纳米粒在大鼠体内的药动学、组织分布及靶向性研

        究   Δ


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        林柳任 ,窦 晨 ,郑永仁 ,马云淑 ,孙 赟 ,程 欣 (1.云南中医药大学中药学院/云南省高校外用给药系统
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        与制剂技术研究重点实验室/云南省傣医药与彝医药重点实验室,昆明 650500;2.云南中医药大学科技处,昆
        明 650500)
        中图分类号 R917          文献标志码 A           文章编号 1001-0408(2021)02-0164-07
        DOI   10.6039/j.issn.1001-0408.2021.02.07

        摘   要   目的:研究羟基喜树碱纳米粒在大鼠体内的药动学及组织分布特征,并探讨其靶向性。方法:将雄性SD大鼠随机分为两
        组,每组6只,分别单剂量尾静脉注射羟基喜树碱纳米粒和市售羟喜树碱注射液(4 mg/kg,以羟基喜树碱计),在给药后5、30、60、
        120、240、360、480、600、720 min时于眼底静脉丛取血500 μL,采用高效液相色谱法测定不同时间点血浆中羟基喜树碱的含量,以
        DAS 3.0等软件计算药动学参数。另取雄性SD大鼠随机分为两组,每组24只,分别单剂量尾静脉注射羟基喜树碱纳米粒和市售
        羟喜树碱注射液(0.6 mg/kg,以羟基喜树碱计),在给药后30、60、120、240 min时于腹主动脉取血并摘取心、肝、脾、肺、肾、脑,采用
        高效液相色谱法测定不同时间点血浆及组织中羟基喜树碱的含量,考察其分布特征及靶向性。结果:羟基喜树碱纳米粒和市售羟
        喜树碱注射液在大鼠体内均符合二室模型,羟基喜树碱纳米粒的AUC0-720 min和AUC0-∞分别为市售羟喜树碱注射液的1.89和1.87
        倍,MRT0-720 min和MRT0-∞为2.74和3.00倍,t1/2β为2.75倍,组间比较差异均有统计学意义(P<0.05);给药后30 min时,羟基喜树碱纳
        米粒和注射液在肺中浓度最高;随着时间的推移,药物逐渐向肝部位积累,在60 min时肝药浓度达到最高。羟基喜树碱纳米粒在
        肝的相对摄取率最大(6.28);以肝为靶向器官,其在心、脾、肺、肾、脑和血浆中的靶向效率均大于羟喜树碱注射液;给药后 30~
        120 min,羟基喜树碱纳米粒在心、肺(除给药后 30 min 外)、肾、脑、血浆中的选择性指数均显著高于羟喜树碱注射液(P<0.05 或
        P<0.01)。结论:羟基喜树碱纳米粒延长了药物的半衰期、提高了其血药浓度、延长了其体内作用时间,且肝靶向性显著。
        关键词 羟基喜树碱;纳米粒;药动学;组织分布;靶向性;大鼠

        Pharmacokinetics,Tissue Distribution and Target Evaluation of Hydroxycamptothecin Nanoparticles in
        Rats
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        LIN Liuren ,DOU Chen ,ZHENG Yongren ,MA Yunshu ,SUN Yun ,CHENG Xin (1. School of Chinese
        Materia Media/Yunnan Colleges and Universities Key Laboratory of External Drug Delivery System and
        Preparation Technology/Yunnan Key Laboratory of Dai and Yi Medicines,Yunnan University of Chinese
        Medicine, Kunming 650500, China; 2. Science and Technology Office, Yunnan University of Chinese
        Medicine,Kunming 650500,China)
        ABSTRACT    OBJECTIVE:To study the pharmacokinetics and tissue distribution characteristics of Hydroxycamptothecin(HCPT)
        nanoparticles in rats,and to investigate their targeting. METHODS:Male SD rats were randomly divided into 2 groups,with 6 rats
        in each group. They were given HCPT nanoparticles and HCPT injection(4 mg/kg based on HCPT)via tail vein respectively. 500
        μL fundus venous plexus blood were sampled at 5,30,60,120,240,360,480,600 and 720 min after administration. The
        plasma concentration of HCPT in rats were measured by HPLC at different time points. The pharmacokinetic parameters were
        calculated by DAS 3.0 software. Male SD rats were randomly divided into two groups,with 24 rats in each group. They were given
        HCPT nanoparticles and HCPT injection(0.6 mg/kg based on HCPT)via tail vein,respectively. Blood was immediately taken
        from the abdominal aorta,and heart,liver,spleen,lung,kidney and brain were removed at 30,60,120,240 min after
                                                            administration. The plasma and tissue concentration of HCPT
            Δ 基 金 项 目 :国 家 自 然 科 学 基 金 资 助 项 目(No.81760775,
        No.81673682);云南省科技厅科技计划项目-中医联合面上项目                  in rats were measured by HPLC. The distribution of HCPT in
        [No.2017FF117(-017),No.2018FF001(-050)];云南省科技厅-云南中  each tissue and targeting were investigated. RESULTS:HCPT
        医学院应用基础研究联合专项重点项目[No.2018FF001(-008)];云南            nanoparticles and its injection conformed to a two-compartment
        省傣医药与彝医药重点实验室培育计划(No.2017DG006)
                                                            model in rats. Compared with HCPT injection,AUC0-720 min and
            *硕士研究生。研究方向:药物新剂型。E-mail:1305353374@
                                                            AUC0- ∞ increased by 1.89 and 1.87 times respectively,
        qq.com
            # 通信作者:副教授,硕士生导师,博士。研究方向:纳米医药、药                 MRT0-720 min and MRT0- ∞ increased by 2.74 and 3.00 times
        物新剂型。E-mail:chengxin920@126.com                     respectively, t1/2 β increased by 2.75 times, with statistical


        ·164 ·  China Pharmacy 2021 Vol. 32 No. 2                                    中国药房    2021年第32卷第2期
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