In vivo study | S 38093 is a novel H3 receptor antagonist/inverse agonist that crosses the blood-brain barrier in 3-and 16-month-old mice, maturation and survival play a role. S38093 induces reversal of age-related effects on hippocampal brain-derived neurotrophic factor transcripts BDNF-IX, BDNF-IV, and BDNF-I in aging animal models. A neurogenesis-related "context dissection test" was performed in aged mice to observe the effect of long-term administration of S38093 on mice: increasing age alters mouse CCS, long-term administration of S38093 will significantly improve CS, increase adult hippocampal neurogenesis, and provide innovative ideas for the treatment of age-related cognitive deficits. Mean drug concentrations of 0.3-1 mg/kg p.o/I. p were active in various behavioral tests in mice. S38093 improved attention, executive function and cognitive flexibility in MPTP-treated of monkeys. In addition, S38093 concentration-dependently increases extracellular histamine levels in the prefrontal cortex and promotes cholinergic transmission in the hippocampus and prefrontal cortex (rat). S38093 is rapidly absorbed in mice and rats (Tmax = 0.25-0.5h) and slower in monkeys (2h), with bioavailability ranging from 20-60%, the half-life was 1.5 h-7.4 h. After administration of S38093, it is widely distributed in the body, with a medium distribution volume and low protein binding rate. S38093 was rapidly distributed in brain tissue. |