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Pharmacokinetics, absolute bioavailability, and tissue distribution of WJ-14, a novel N-methyl-d-aspartate receptor antagonist, in rats by liquid chromatography-tandem mass spectrometry.
Biomedical Chromatography : BMC 2024 January 23
To circumvent the limitations of current antidepressants, WJ-14, a novel N-methyl-d-aspartate receptor antagonist, was synthesized and demonstrated to have remarkable efficiency in the treatment of depression. To illustrate the pharmacokinetics, absolute bioavailability, and tissue distribution of WJ-14 in rats, a rapid and sensitive liquid chromatography-tandem mass spectrometry-based analytical method was developed and validated for the separation and detection of WJ-14 in both plasma and tissue samples. After oral administration, WJ-14 was rapidly absorbed into the blood with time to reach the maximum plasma concentration (Tmax ) within 0.28 h and quickly eliminated with clearance (Cl) exceeding 6.80 L/h/kg and elimination half-life (t1/2 ) within 2.69 h. No obvious accumulation was found with mean residencetime (MRT) within 4.10 h. Tissue distribution revealed that WJ-14 was extensively distributed in the main tissues of rats, and massive amounts of WJ-14 were distributed in the liver. Extensive distribution and quick elimination led to extremely low absolute bioavailability of WJ-14 (1.91% of 8.33 mg/kg and 3.30% of 24.99 mg/kg). WJ-14 was detected in the brain only 0.083 h after oral administration, which is crucial for a rapid-onset antidepressant candidate. In addition, WJ-14 likely exhibited a non-linear pharmacokinetic process at dosages of 8.33 and 24.99 mg/kg. The findings may provide valuable information for subsequent studies on WJ-14.
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