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布渣叶总黄酮固体分散体片的大鼠体内生物利用度研究 被引量:1

Pharmacokinetics and Bioavailability of Solid Dispersion Tablet of Microtis Folium Total Flavonoids in Rats
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摘要 目的:建立了一种同时测定大鼠血浆中牡荆苷、异牡荆苷、水仙苷的HPLC/MS方法,并分析了布渣叶总黄酮提取物(BZY)和布渣叶总黄酮固体分散体片(SDT)的大鼠体内药代动力学特征,评价SDT体内生物利用度。方法:SD大鼠随机分为两组,分别灌胃给予BZY和SDT,分别于不同时间点取血,采用HPLC/MS测定牡荆苷、异牡荆苷、水仙苷的血药浓度,绘制药时曲线,运用kinetica4.4软件计算药动学参数。结果:比较口服布渣叶总黄酮提取物和布渣叶总黄酮固体分散体片的药动学参数,牡荆苷AUC_(0→12)分别为(3.425±0.135)和(5.257±0.257)mg·L^(-1)·h,MRT_(0→t)分别为(4.317±0.129)和(4.467±0.104)h,t_(1/2)分别为(9.128±2.556)和(11.335±4.102)h,tmax分别为(0.500±0.000)和(1.0±0.000)h,Cmax分别为(0.7±0.049)和(1.295±0.042)mg·L^(-1),异牡荆苷AUC_(0→12)分别为(3.547±0.056)和(6.057±0.242)mg·L^(-1)·h,MRT0→t分别为(4.417±0.109)和(4.235±0.147)h,t_(1/2)分别为(6.382±1.429)和(7.411±3.566)h,tmax分别为(0.692±0.047)和(0.583±0.204)h,Cmax分别为(0.692±0.047)和(1.455±0.024)mg·L^(-1),水仙苷AUC_(0→12)分别为(11.962±0.584)和(20.400±0.444)mg·L^(-1)·h,MRT0→t分别为(4.270±0.088)和(4.310±0.056)h,t1/2分别为(2.879±0.840)和(3.054±0.588)h,tmax分别为(1.500±0.000)和(1.500±0.000)h,Cmax分别为(2.542±0.134)和(4.665±0.060)mg·L^(-1)。以BZY为对照,SDT中牡荆苷、异牡荆苷、水仙苷的相对生物利用度分别为178.9%、187.5%、166.2%,且各指标的药动学参数AUC0→t、AUC0→∞、Cmax均显著性升高(P<0.01)。结论:提示制剂技术能提高布渣叶总黄酮中牡荆苷、异牡荆苷、水仙苷的生物利用度,达到了实验预期要求。 Objective: To establish a high-performance liquid chromatography-mass spectrometry( HPLC-MS)method for simultaneously determining the contents of vitexin,isovitexin and narcissus in rats plasma and study the pharmacokinetics of the microtis folium flavonoids extract( BZY) and the microtis folium flavonoids solid dispersion tablet( SDT) and investigate the relative bioavailability of SDT. Methods: SD rats were randomly divided into two groups for the respective administration of a single dose of BZY and SDT. Blood samples were collected at different time points and the concentrations of vitexin,isovitexin and narcissus in rats plasma were simultaneously determined by HPLC-MS. The pharmacokinetic parameters were calculated by kinetica 4. 4 pharmacokinetic program. Results: The pharmacokintic parameters of vitexin in BZY and SDT were as follows: AUC0→t( 3. 425 ± 0. 135) mg·L-1·h and( 5. 257 ± 0. 257)mg·L-1·h,MRT0→t( 4. 317 ± 0. 129) hand( 4. 467 ± 0. 104) h,t1 /2( 9. 128 ± 2. 556) h and( 11. 335 ± 4. 102) h,tmax( 0. 500 ± 0. 000) h and( 1. 0 ± 0. 000) h,Cmax( 0. 7 ± 0. 049) mg·L-1 and( 1. 295 ± 0. 042) mg·L-1,respectively. The pharmacokintic parameters of isovitexin in BZY and SDT were as follows: AUC0→t( 3. 547 ± 0. 056) mg·L-1·h and( 6. 057 ± 0. 242) mg·L-1·h,MRT0→t( 4. 417 ± 0. 109) h and( 4. 235 ± 0. 147) h,t1 /2( 6. 382 ± 1. 429) h and( 7. 411 ± 3. 566) h,tmax( 0. 692 ± 0. 047) h and( 0. 583 ± 0. 204) h,Cmax( 0. 692 ± 0. 047) mg·L-1and( 1. 455 ±0. 024) mg·L-1,respectively. The pharmacokintic parameters of narcissus in BZY and SDT were as follows: AUC0→t( 11. 962 ± 0. 584) mg·L-1·h and( 20. 400 ± 0. 444) mg·L-1·h,MRT0→t( 4. 270 ± 0. 088) h and( 4. 310 ±0. 056) h,t1 /2( 2. 879 ± 0. 840) h and( 3. 054 ± 0. 588) h,tmax( 1. 500 ± 0. 000) h and( 1. 500 ± 0. 000) h,Cmax( 2. 542± 0. 134) mg·L-1 and( 4. 665 ± 0. 060) mg·L-1,respectively. Compare with BZY,the relative bioavailabilities of vitexin,isovitexin and narcissus in SDT were 178. 9 %,187. 5 %,166. 2 %,respectively. Conclusions: The bioavailability of microtis folium total flavonoids was increased by making them into solid dispersion tablet and the biopharmaceutical property of the flavones was improved.
出处 《中华中医药学刊》 CAS 北大核心 2016年第8期1936-1940,共5页 Chinese Archives of Traditional Chinese Medicine
基金 广东省科技厅重大科技专项项目(2012A080202016) 广东省中医药局建设中医药强省科研项目(20152006)
关键词 布渣叶 总黄酮 生物利用度 固体分散体 microtis folium flavonoids bioavailability solid dispersion
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