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after simulation were also drawn to evaluate the effect of two-drug combination. Serum contents of UA in rats were determined and
Fa value was calculated in single drug groups and drug combination group B,C [the dose of polydatin+emodin were(0.625+
0.625),(0.625+1.25),(0.625+2.5),(0.625+5),(0.625+10)mg/kg and(0.625+0.625),(1.25+0.625),(2.5+0.625),(5+
0.625),(10+0.625)mg/kg]. The optimal complication proportion of two drugs were screened. The serum contents of xanthine
oxidase(XOD)in rats were determined in normal control group,model group,benzbromarone group,polydatin/emodin alone
group(10 mg/kg)and the optimal complication proportion groups. The mechanism was analyzed primarily. RESULTS:Compared
with normal control group,the content of UA in model group was increased significantly(P<0.01). Compared with model group,
except for 0.625 mg/kg polydatin alone group,the content of UA in other administration groups were decreased significantly(P<
0.05 or P<0.01). When the two drugs were used alone or in combination,Fa value was positively correlated with drug dose
(intercept>0,correlation coefficient>0.9),and Fa value of the combination group was higher than that of any single drug group;
when the simulated Fa value was more than 15%,the corresponding CI value was less than 1,two-drug combination showed
synergistic effect. When the complication proportion of polydatin and emodin was 1 ∶ 4,the Fa value(53.10)was similar to that of
drug combination group A(53.73),and the dose of them were less [(0.625+2.5)mg/(kg·d)vs.(2.5+2.5)mg/(kg·d)]. Compared
with normal control group,serum content of XOD in model group was increased significantly(P<0.01);compared with model
group,serum content of XOD in administration groups were decreased significantly,and the optimal complication proportion group
was significantly lower than polydatin alone group and emodin alone group(P<0.05 or P<0.01). CONCLUSIONS:The polydatin
and emodin used alone or in combination can reduce the serum content of UA in HUA model rats by inhibiting the generation of
XOD. They have a certain synergistic effect,and the optimal complication proportion is 1∶4.
KEYWORDS Polydatin;Emodin;Median effect principle;Hyperuricemia;Synergistic effect;Xanthine oxidase;Mechanism;
Rats
高尿酸血症(Hyperuricemia,HUA)是一种代谢性疾 床用药提供新的选择。为此,本课题组拟对虎杖苷与大
[1]
病,由尿酸合成增多和(或)排泄减少所引起的 ,是我国 黄素进行成分配伍研究,并利用中效原理定量分析两药
中老年男性的常见病,且发病率有随生活水平的提高而 联合应用的效果并筛选最优配伍比例,同时初步探讨其
[2]
逐渐上升的趋势 。有研究表明,长期的高尿酸水平可 作用机制,为中药成分的药效物质基础研究提供参考,
诱发痛风,并可能会损害肾脏及心血管等器官,从而引 为防治HUA的新药开发提供理论依据。
[3]
发高血压、高血脂、糖尿病等并发症 ,故HUA已成为威 1 材料
胁人类健康的重要疾病之一。目前,临床常用的苯溴马 1.1 仪器
隆、别嘌醇等化学药在治疗 HUA 方面虽有确切的降尿 BP121S型万分之一电子分析天平(德国Sartorius公
[4]
酸作用,但存在停药后复发率高、副作用多等不足 ,其 司);Milli-Q 型超纯水系统(美国 Millipore 公司);X
临床应有受到了一定的限制。我国传统中医药在疾病 Mark 型全波长酶标仪(美国 Bio-Rad 公司);UV-2550
TM
早期干预等方面独具优势,且兼具毒副作用少的优点, 型紫外-可见分光光度计(日本 Shimadzu 公司);Type
故中医药治疗 HUA 受到越来越多学者的关注,已有多 16700 Mixer 型旋涡混匀器(美国 Thermolyne 公司);
个研究证实虎杖、高良姜等中药具有降低尿酸的功 1580R型高速离心机(香港基因有限公司)。
效 [5-6] 。但由于中药成分复杂,且不同成分叠加后的作用 1.2 药品与试剂
效果难以预测,因此如何利用有效方法对中药有效组分 虎杖苷原料药(批号:AF8071101,纯度:≥98%)、大
配伍关系进行研究显得尤为重要。 黄素原料药(批号:AF7112009,纯度:≥98%)均购自成
中效原理(Chou-Talalay法)又称中位药效法(Medi- 都埃法生物科技有限公司;苯溴马隆原料药(阳性对照,
an-drug effect analysis)、联合指数法(Combination index 批号:C10240927,纯度:≥99%)、氧嗪酸钾(OA,批号:
method),是由美国学者 Chou TC 和 Talalay P 于 1984 年 C10504744)均购自湖北伽玛生物科技有限公司;尿酸检
所建的用于定量分析药物联合作用的方法 。该法以两 测试剂盒(批号:20190509)、黄嘌呤氧化酶(XOD)检测
[7]
药(或活性成分)合用后不同效应(以Fa表示)下的联合 试剂盒(批号:20190613)均购自北京索莱宝科技有限公
指数(CI)来评价其联合应用的效果,在国内外相关领域 司;其余试剂均为国产分析纯,水为超纯水。
的研究中应用广泛 。 1.3 动物
[7]
虎杖 Polygonum cuspidatum Sieb. Et Zucc 为多年生 SPF 级 SD 大鼠 130 只,雄性,7~8 周龄,体质量
蓼科灌木状草本植物,具有止咳化痰、散瘀止痛、利胆退 180~220 g,购自辽宁长生生物技术股份有限公司,动物
[8]
黄、清热解毒之功效 。虎杖苷与大黄素是虎杖中两种 生产许可证号:SCXK(辽)2015-0001。
含量较高的有效成分,且两者均具有一定的降尿酸作 2 方法
用 [9-10] 。鉴于两种成分的药理活性,将其进行配伍并优 2.1 分组与给药
化其配伍比例将有助于中药活性成分组方的筛选,为临 所有大鼠均适应性饲养1周后开始实验。按体质量
·2604 · China Pharmacy 2020 Vol. 31 No. 21 中国药房 2020年第31卷第21期