LIU Xiaolin,YANG Hanyu,WANG Xiaoyan,et al.Pharmacokinetic study of small molecule inhibitor SYHA1809 in Beagle dogs[J].ZHONGGUO YAOFANG,2023,34(17):2085-2089.
LIU Xiaolin,YANG Hanyu,WANG Xiaoyan,et al.Pharmacokinetic study of small molecule inhibitor SYHA1809 in Beagle dogs[J].ZHONGGUO YAOFANG,2023,34(17):2085-2089. DOI: 10.6039/j.issn.1001-0408.2023.17.07.
Pharmacokinetic study of small molecule inhibitor SYHA1809 in Beagle dogs
To study the pharmacokinetics of small molecule inhibitor SYHA1809 in Beagle dogs.
METHODS
2
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
2
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
t
1/2
was (3.35±1.36) h; after single intragastric administration of low-dose, medium-dose and high-dose of SYHA1809, average
t
max
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
c
max
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
2
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.
关键词
小分子抑制剂SYHA1809液相色谱-串联质谱法药动学
Keywords
SYHA1809LC-MS/MSpharmacokinetics
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