小分子抑制剂SYHA1809在比格犬体内的药动学研究
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篇名: 小分子抑制剂SYHA1809在比格犬体内的药动学研究
TITLE: Pharmacokinetic study of small molecule inhibitor SYHA1809 in Beagle dogs
摘要: 目的 研究小分子抑制剂SYHA1809在比格犬体内的药动学。方法采用液相色谱-串联质谱(LC-MS/MS)法进行测定。将比格犬随机分为单次静脉给药组(3.75mg/kg)、单次低剂量灌胃组(3.75mg/kg)、单次中剂量灌胃组(7.5mg/kg)、单次高剂量灌胃组(15mg/kg)和多次灌胃组(7.5mg/kg,每天1次,连续7d),每组6只,雌雄各半。各组比格犬按照设定的时间点收集血浆样品,经预处理后进行LC-MS/MS定量分析,获得的数据采用PhoenixWinNonlin8.0软件计算药动学参数。结果SYHA1809静脉注射给药后,在比格犬体内的CL为(2.70±0.48)mL/(min·kg),稳态分布体积为0.757L/kg,t1/2为(3.35±1.36)h;单次灌胃给予低、中、高剂量的SYHA1809后,其在比格犬体内的平均tmax为(0.53±0.02)h,血药浓度随给药剂量的增加而升高;单次灌胃给予3.75mg/kg的SYHA1809后,绝对生物利用度为83.5%;在3.75~15mg/kg剂量范围内,SYHA1809的cmax和AUC增加与剂量呈正相关;SYHA1809连续以7.5mg/kg灌胃7d后,与同剂量单次灌胃给药后的药动学参数相当,差异无统计学意义(P>0.05)。结论SYHA1809在比格犬体内吸收迅速,血药浓度呈剂量依赖性,生物利用度高,多次灌胃给药后无明显蓄积,药动学行为良好。
ABSTRACT: OBJECTIVE To study the pharmacokinetics of small molecule inhibitor SYHA1809 in Beagle dogs. METHODS LC-MS/MS method was adopted. Beagle dogs were randomly divided into single intravenous administration group (3.75 mg/kg), single low-dose intragastric administration group (3.75 mg/kg), single medium-dose intragastric administration group (7.5 mg/kg), single high-dose intragastric administration group (15 mg/kg) and multiple intragastric administration group (7.5 mg/kg, once a day, for 7 consecutive days), with 6 dogs in each group, half male and half female. The plasma samples of Beagle dogs were collected in each group according to the set time point, and underwent LC-MS/MS quantitative analysis after preprocessing. The pharmacokinetic parameters were calculated by using Phoenix WinNonlin 8.0 software using obtained data. RESULTS After intravenous injection, CL of SYHA1809 in Beagle dogs was (2.70±0.48) mL/(min·kg), steady-state distribution volume was 0.757 L/kg, and t1/2 was (3.35±1.36) h; after single intragastric administration of low-dose, medium-dose and high-dose of SYHA1809, average tmax was (0.53±0.02) h, and the blood drug concentration increased with the increase of dose; after single intragastric administration of 3.75 mg/kg SYHA1809, the absolute bioavailability was 83.5%; within the dose range of 3.75-15 mg/kg, the increase in cmax and AUC of SYHA1809 was positively correlated with the dose; after intragastric administration of 7.5 mg/kg SYHA1809 for 7 consecutive days, the pharmacokinetic parameters of SYHA1809 were comparable to those of a single intragastric administration of the same dose, with no statistically significant difference (P>0.05). CONCLUSIONS SYHA1809 is absorbed rapidly in Beagle dogs, shows the dose-dependent blood concentration, high bioavailability, no obvious accumulation after multiple intragastric administration, and good pharmacokinetic behavior.
期刊: 2023年第34卷第17期
作者: 刘晓琳;杨汉煜;王小彦;康凯;梁敏
AUTHORS: LIU Xiaolin,YANG Hanyu,WANG Xiaoyan,KANG Kai,LIANG Min
关键字: 小分子抑制剂;SYHA1809;液相色谱-串联质谱法;药动学
KEYWORDS: small molecule inhibitor; SYHA1809; LC-MS/MS; pharmacokinetics
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