Page 67 - 2019年11月第30卷第21期
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甘草酸对大鼠体内硝苯地平药动学的影响                                               Δ


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        毛 俊    1,2* ,朱项羽 ,夏宏光 ,王志豪 ,刘慧茹 ,江海燕 ,金 涌 (1.安徽医科大学药学院抗炎免疫药物教育
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        部重点实验室,合肥 230032;2.合肥市第二人民医院药学部,合肥 230026)
        中图分类号 R965          文献标志码 A           文章编号 1001-0408(2019)21-2942-04
        DOI   10.6039/j.issn.1001-0408.2019.21.13
        摘   要   目的:研究甘草酸对大鼠体内硝苯地平药动学的影响。方法:将大鼠随机分为实验组和对照组,每组10只。实验组大鼠
        灌胃甘草酸5 mg/kg,对照组灌胃等量的0.5%羧甲基纤维素钠溶液,每日1次,连续给药14 d,第14天灌胃30 min后,2组大鼠均灌
        胃硝苯地平3 mg/kg,并于灌胃硝苯地平前与灌胃后0.25、0.5、0.75、1、1.5、2、3、4、6、8、12、24 h眼内眦静脉丛采血0.5 mL。采用高
        效液相色谱法,以地西泮为内标,测定其中硝苯地平的浓度;色谱柱为ODS-C18;流动相为甲醇-水(62 ∶ 38,V/V,乙酸调pH为4.5);
        流速为1.0 mL/min;柱温为30 ℃;检测波长为238 nm;进样量为20 μL。使用Winonlin 6.0软件计算药动学参数,t检验进行统计分
        析。结果:实验组和对照组大鼠体内硝苯地平的主要药动学参数tmax分别为(1.40±0.15)、(1.50±0.01)h;cmax分别为(0.15±0.03)、
        (0.29±0.09)mg/L;t1/2分别为(4.70±1.17)、(5.20±1.38)h;AUC0-24 h分别为(1.00±0.10)、(1.89±0.37)mg·h/L;AUC0-∞分别为
        (1.00±0.16)、(1.98±0.32)mg·h/L;MRT分别为(6.76±0.64)、(6.60±1.36)h。与对照组比较,实验组大鼠体内硝苯地平的cmax、
        AUC0-24 h、AUC0-∞均明显降低,差异具有统计学意义(P<0.05)。结论:甘草酸可能会降低硝苯地平在大鼠体内的生物利用度,两药
        联用时建议增加硝苯地平的剂量以达到有效的血药浓度。
        关键词 甘草酸;硝苯地平;地西泮;高效液相色谱法;药动学;大鼠

        Effects of Glycyrrhizic Acid on Pharmacokinetics of Nifedipine in Rats
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        MAO Jun ,ZHU Xiangyu ,XIA Hongguang ,WANG Zhihao ,LIU Huiru ,JIANG Haiyan ,JIN Yong(1.Key
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        Lab of Anti-inflammatory and Immune Medicine,Ministry of Education,School of Pharmacy,Anhui Medical
        University,Hefei 230032,China;2.Dept. of Pharmacy,Hefei Second People’s Hospital,Hefei 230026,China)
        ABSTRACT    OBJECTIVE:To study the effects of glycyrrhizic acid on the pharmacokinetics of nifedipine in rats. METHODS:
        Rats were randomly divided into experimental group and control group,with 10 rats in each group. Experimental group was given
        glycyrrhizic acid 5 mg/kg and control group was given 0.5% CMC-Na(sodium carboxymethylcellulose)solution,once a day,for
        14 consecutive days. On 14th day after 30 min of intragastric administration,both groups were given nifedipine 3 mg/kg
        intragastrically. Blood samples 0.5 mL were collected from intraocular vein plexus before and at 0.25,0.5,0.75,1,1.5,2,3,4,
        6,8,12 and 24 h after intragastric administration. The concentration of nifedipine was determined by HPLC using diazepam as
        internal standard. The determination was performed on ODS-C18 column with mobile phase consisted of methanol-water(62 ∶ 38,
        V/V,pH adjusted to 4.5 with acetic acid) at the flow rate of 1.0 mL/min. The column temperature was 30 ℃ . The detection
        wavelength was set at 238 nm,and sample size was 20 μL. The pharmacokinetic parameters were calculated with Winonlin 6.0
        software,and statistical analysis was performed by t-test. RESULTS:The main pharmacokinetic parameters of the experimental
        group and the control group were as follows as tmax was(1.40±0.15),(1.50±0.01)h;cmax was(0.15±0.03),(0.29±0.09)
        mg/L;t1/2 was(4.70±1.17),(5.20±1.38)h;AUC0-24 h were(1.00±0.10),(1.89±0.37)mg·h/L;AUC0-∞ was(1.00±0.16),
        (1.98±0.32)mg·h/L;MRT was(6.76±0.64),(6.60±1.36)h,respectively. Compared with control group,cmax,AUC0-24 h and
        AUC0-∞ of nifedipine were decreased significantly in experimental group,with statistical significance(P<0.05). CONCLUSIONS:
        Glycyrrhizic acid can reduce the bioavailability of nifedipine in rats. It is suggested that the dosage of nifedipine should be
        increased in order to achieve effective blood concentration.
        KEYWORDS     Glycyrrhizic acid;Nifedipine;Diazepam;HPLC;Pharmacokinetics;Rat



            硝苯地平是当今治疗心脑血管疾病最常见的一线                           药物,主要用于高血压、心律失常、心绞痛等病的治疗。

            Δ 基金项目:安徽省自然科学基金项目(No.1808085MH284)             该药在发挥药效的同时,常常会引起转氨酶升高、黄疸
            *主管药师,硕士研究生。研究方向:临床药理。电话:0551-                  等药物性肝损伤 。甘草是一种历史悠久、应用广泛的
                                                                          [1]
        62203647。E-mail:2973311@qq.com
                                                            中药,在方剂中常作为使药,有“无甘草不成方”之说,在
            # 通信作者:教授,博士。研究方向:药剂学与药物分析。电
        话:0551-65167769。E-mail:jinyong@ahmuedu.cn           中医经方《伤寒论》一百一十三方中,多达七十七方含有


        ·2942  ·  China Pharmacy 2019 Vol. 30 No. 21                                中国药房    2019年第30卷第21期
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