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木犀草素固体分散体的体外溶出度和体内药动学研究
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黄子婷 ,王梦颜,常金花,刘 沛,王汝兴,刘喜纲(承德医学院中药研究所,河北 承德 067000)
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中图分类号 R944;R969.1 文献标志码 A 文章编号 1001-0408(2024)10-1215-05
DOI 10.6039/j.issn.1001-0408.2024.10.11
摘 要 目的 研究木犀草素固体分散体的体外溶出度和在 Beagle 犬体内的药动学行为。方法 按照 2020 年版《中国药典》(四
部)“溶出度测定法”第二法(桨法)测定木犀草素固体分散体的溶出度。采用超高效液相色谱-串联质谱(UPLC-MS/MS)法测定
Beagle犬血浆中木犀草素浓度。取Beagle犬12只,随机分为木犀草素原料药组和木犀草素固体分散体组,每组6只,均口服相应
药物,给药剂量相当于木犀草素10 mg/kg。分别于给药前(0 h)、给药后5、10、15、30、45 min和1、2、4、6、8、10、12、24、48 h取血,用
乙腈沉淀蛋白后,采用UPLC-MS/MS法测定Beagle犬体内木犀草素血药浓度。运用DAS 3.2.8药动学软件,采用非房室模型计算
药动学参数。结果 木犀草素固体分散体在纯水、0.1%十二烷基硫酸钠溶液中的溶出度高于木犀草素原料药,在0.1%十二烷基硫
酸钠溶液中 120 min 的溶出度可达 95%。木犀草素固体分散体组 Beagle 犬体内木犀草素的峰浓度(cmax )是木犀草素原料药组的
5.62倍,其相对生物利用度为348%。与木犀草素原料药组比较,木犀草素固体分散体组Beagle体内木犀草素的cmax和药时曲线下
面积均显著升高,表观分布容积显著降低(P<0.05)。结论 木犀草素固体分散体可提高木犀草素的体外溶出度和在Beagle犬体
内的生物利用度。
关键词 木犀草素;固体分散体;UPLC-MS/MS法;药动学;溶出度;生物利用度
Study on in vitro dissolution and in vivo pharmacokinetics of Luteolin solid dispersion
HUANG Ziting,WANG Mengyan,CHANG Jinhua,LIU Pei,WANG Ruxing,LIU Xigang(Institute of Chinese
Materia Medica, Chengde Medical University, Hebei Chengde 067000, China)
ABSTRACT OBJECTIVE To explore in vitro dissolution and in vivo pharmacokinetics of Luteolin solid dispersion in Beagle
dogs. METHODS The dissolution of Luteolin solid dispersion was investigated according to the second method (paddle method) of
the “dissolution determination method” in the 2020 edition of Chinese Pharmacopoeia (Part Ⅳ). UPLC-MS/MS method was
established to determine the concentration of luteolin in the plasma of Beagle dogs. Twelve Beagle dogs were randomly divided into
luteolin group and Luteolin solid dispersion group, with 6 dogs in each group. They were given relevant medicine orally at the dose
of 10 mg/kg luteolin. Blood was collected before medication (0 h), at 5, 10, 15, 30, 45 min and 1, 2, 4, 6, 8, 10, 12, 24, 48 h
after administration. After protein precipitation with acetonitrile, the blood concentration of luteolin in Beagle dogs was determined
by UPLC-MS/MS and the major pharmacokinetic parameters were calculated with non-compartmental models by using DAS 3.2.8
pharmacokinetic software. RESULTS The dissolutions of Luteolin solid dispersion in purified water and 0.1% sodium dodecyl
sulfate solution was significantly higher than those of luteolin; the dissolution rate reached 95% in 0.1% sodium dodecyl sulfate
solution for 120 minutes. The peak concentration (cmax ) of luteolin in the Luteolin solid dispersion group of Beagle dogs was 5.62
times higher than the luteolin group, and the relative bioavailability was 348%. Compared with luteolin group, cmax and the area
under the drug time curve of luteolin in the Luteolin solid dispersion group of Beagle dogs were significantly increased, while the
apparent distribution volume was significantly reduced (P<0.05). CONCLUSIONS Luteolin solid dispersion can improve in vitro
dissolution and bioavailability of luteolin in Beagle dogs.
KEYWORDS luteolin; solid dispersion; UPLC-MS/MS; pharmacokinetics; dissolution; bioavailability
Δ 基金项目 河北省高等学校科学研究项目(No.ZD2022-121);承 木犀草素是一种黄酮类化合物,具有保护神经、抗
德医学院自然科学研究计划项目(No.202010) 肿瘤和保肝等药理作用,临床应用广泛 [1―3] 。由于木犀
*第一作者 硕士研究生。研究方向:中药制剂新技术。电话: -5 [4]
草素溶解度较低(1.93×10 mol/kg,20 ℃) ,导致其口
0314-2290629。E-mail:2903186925@qq.com
服生物利用度低,影响了其在临床的使用。固体分散体
# 通信作者 教授,硕士生导师,硕士。研究方向:中药制剂新技
术。电话:0314-2290629。E-mail:liuxgmail@sina.com 技术主要通过提高药物的溶解度及溶出速率,来提高药
中国药房 2024年第35卷第10期 China Pharmacy 2024 Vol. 35 No. 10 · 1215 ·