摘要
目的用HPLC-MS测定健康受试者口服马来酸依那普利制剂后的血药浓度,估算受试制剂和参比制剂的药动学参数,评价两种制剂的生物等效性和相对生物利用度。方法采用随机二交叉设计试验,20例男性健康志愿受试者,单剂量口服受试制剂和参比制剂的马来酸依那普利片。以高效液相色谱-串联质谱法测定血浆中依那普利和依那普利拉的浓度。采用SPSS及BAPP2.2软件处理计算主要药动学参数。结果受试制剂和参比制剂血浆中马来酸依那普利的t1/2分别为(1.33±0.22)和(1.25±0.37)h;ρmax分别为(238.59±55.40)和(230.61±78.29)μg.L-1,tmax分别为(0.70±0.20)和(0.80±0.20)h,AUC0-8h分别为(339.03±70.66)和(373.23±108.83)μg.h.L-1,AUC0-∞分别为(343.51±71.15)和(378.36±107.35)μg.h.L-1。依那普利拉的t1/2分别为(6.26±0.63)和(5.72±0.54)h;ρmax分别为(83.75±25.91)和(99.13±29.61)μg.L-1,tmax分别为(3.80±0.60)和(3.40±0.70)h,AUC0-36h分别为(812.02±181.88)和(803.35±199.50)μg.h.L-1,AUC0-∞分别为(832.99±180.85)和(817.36±201.78)μg.h.L-1,以依那普利和依那普利拉计算的人体相对生物利用度分别为(90.84±39.6)%和(102.8±31.3)%。结论两种制剂在健康人体内具有生物等效性。
OBJECTIVE To evaluate the bioequivalence of enalapril maleate tablet of tested preparation and reference preparation in healthy volunteers. METHODS A single oral dose of two preparations was given to 20 healthy male volunteers according to a randomized crossover design. Plasma drug concentrations were detected by LC-MS/MS. RESULTS The pharmacokinetic parameters of enalapril maleate of two preparations were as follows: t1/2 ( 1.33 ± 0. 22) and ( 1.25 ± 0. 37 ) h ;ρmax (238.59 ±55. 40) and (230. 61 ± 78.29) μg·h·L^-1; tmax= (0. 70 ± 0. 20) and (0. 80 ± 0.20) h ; AUC0-8 h (339.03 ± 70. 66) and (373. 23 ± 108. 83 ) μg·h·L^-1 ; AUC0-∞ (343.51 ±71.15)and (378.36 ± 107. 35)μg·h·L^-1 ,respectively. The pharmacokinetic parameters of enalaprilat were as follows: t1/2(6.26±0.63) and (5.72 ±0.54)h;ρmax(83.75 ±25.91) and (99. 13±29.61)μg·h·L^-1;tmax(3.80±0.60) and (3.40± 0. 70) h;AUC0-36h(812. 02 ± 181.88)and (803.35 ± 199. 50) μg·h·L^-1 ; AUC0-∞(832.99 ± 180. 85) and (817. 36 ± 201.78) μg·h·L^-1 ,respectively. The relative bioavailability of enalapril maleate and enalaprilat were (90. 84 ± 39.6)% and (102.8 ±31.3 )% , respectively. CONCLUSION The two formulations are bioequivalent in human body.
出处
《中国药学杂志》
CAS
CSCD
北大核心
2007年第7期524-528,共5页
Chinese Pharmaceutical Journal