机构地区:[1]华中科技大学同济医学院附属协和医院临床药学研究室,湖北武汉430022
出 处:《中国医院药学杂志》2015年第16期1474-1478,共5页Chinese Journal of Hospital Pharmacy
摘 要:目的:评价空腹和餐后两种状态下口服雷贝拉唑钠肠溶微丸型胶囊的人体生物利用度。方法:22位健康志愿受试者随机分成2组,每组11人,分别空腹或餐后口服给予雷贝拉唑钠肠溶微丸型胶囊或雷贝拉唑钠肠溶片各20 mg,7 d清洗后交叉给药。采用高效液相色谱-串联质谱(HPLC/MS/MS)法测定血浆中雷贝拉唑的血药浓度。结果:空腹口服雷贝拉唑钠肠溶微丸型胶囊与雷贝拉唑钠肠溶片的主要药动学参数如下:t1/2分别为(2.75±1.14)h和(2.57±1.03)h;Tmax(2.57±1.04)h和(3.14±1.09)h;Cmax分别为(372.55±169.10)ng·ml-1和(386.35±174.14)ng·ml-1;AUC0→t分别为(955.98±586.10)ng·h·ml-1和(918.84±445.69)ng·h·ml-1;AUC0→∞(978.14±610.44)ng·h·ml-1和(946.6±473.30)ng·h·ml-1。MRT0→t分别为(3.85±1.11)h和(4.59±1.28)h;MRT0→∞分别为(4.12±1.26)h和(4.92±1.56)h;Vd分别为(100.38±51.26)L·kg-1和(60.81±61.20)L·kg-1。空腹状态下给药的相对生物利用度F为(113.2±59.6)%。餐后口服雷贝拉唑钠肠溶微丸型胶囊与雷贝拉唑钠肠溶片的主要药动学参数如下:t1/2分别为(2.47±0.69)h和(1.94±0.65)h;Tmax(3.27±0.80)h和(4.50±1.13)h;Cmax分别为(404.00±134.38)ng·ml-1和(410.14±126.98)ng·ml-1;AUC0→t分别为(969.66±372.63)ng·h·ml-1和(998.71±443.56)ng·h·ml-1;AUC0→∞分别为(984.97±385.42)ng·h·ml-1和(1 010.56±455.27)ng·h·ml-1;MRT0→t分别为(4.30±0.97)h和(5.50±1.14)h;MRT0→∞分别为(4.50±1.16)h和(5.62±1.19)h;Vd分别为(84.40±42.11)L·kg-1和(67.72±41.67)L·kg-1。餐后给药的相对生物利用度F为(118.1±94.1)%。统计学检验结果表明空腹及餐后给药两制剂间具有生物等效性。试验药组的Tmax在空腹状态下相比参比药组略快,但无显著性差异(P>0.05),而在餐后状态下,试验药组Tmax更快,且有显著性差异(P<0.05)。空腹及餐后两种状态下试验药组Vd较参比药Vd均有显著性差异(P<0.05)。结论:空腹及餐后两种状态下口服雷贝拉唑钠肠溶微OBJECTIVE To evaluate bioavailabilities of rabeprazole sodium enteric-coated pellets capsules under both fasting and fed state. METHODS A total of 22 healthy volunteers were randomly divided into two groups and given with a single oral dose of 20 mg rabeprazole sodium enteric-coated pellets capsules or rabeprazole sodium enteric-coated tablets respectively under fasting or fed conditions. Wash period was 7 days. Blood samples were collected at different time points. Plasma concentrations of rabeprazole were determined by LC/MS/MS method. RESULTS Main pharmacokinetic parameters of two formulations under fasting state were shown as follows: t1/2 were (2. 75 ± 1.14)h and (2. 57 ± 1.03)h. Tmax (2. 57 ± 1.04)h and (3. 14± 1.09) h. Cmax were (372. 55 ± 169. 10) ng·ml-1 and (386. 35 ± 174. 14) ng.ml-1. AUC0→t were (955. 98 ± 586. 10) ng.h.ml-1 and (918. 84± 445.69) ng.h.ml-1. AUC0→∞ were (978. 14 ± 610. 44) ng.h.ml-1 and (946. 62 ± 473.30) ng·h·ml-1. MRT0→t were (3. 85 ± 1.11) h and (4. 59± 1.28) h. MRT0→∞ were (4. 12± 1.26) h and (4. 92± 1.56) h. Vd were (100. 38 ± 51.26) L. kg-1 and (60. 81 ± 61.20) L. kg-1. Compared with reference formulation, relative bioavailability of test preparation was (113.2 ± 59. 6) %. Main pharmaeokinetic parameters of two formulations under fed conditions were shown as follows: t1/2 were (2. 47 ± 0. 69) h and (1.94 ± 0. 65) h. Tmax(3. 27 ± 0. 80) h and (4. 50 ± 1.13) h. Cmax were (404. 00 ± 134. 38) ng.ml-1 and (410. 14± 126. 98) ng.ml -1. AUC0→∞ were (969. 66±372. 63) ng.h.ml-1 and (998. 71 ±443. 56) ng.h.ml-1. AUC0→∞ were (984. 97 ± 385.42) ng· h· ml-1 and (1010. 56 ± 455.27) ng. h. ml- 1. MRT0→t were (4. 30 ± 0. 97) h and (5. 50 ± 1.14) h. MRT0→∞ were (4. 50 ± 1.16) h and (5.62 ± 1.19) h. Vd were (84. 40 ± 42. 11) L· kg-1 and (67. 72 ± 41.67) L· kg-1. Relative bioavailability of test prep
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