| Bioactivity |
S 38093 is a brain-penetrant, orally active antagonist of H3 receptor, with Kis of 8.8, 1.44 and 1.2 µM for rat, mouse and human H3 receptors, respectively. |
| Target |
Ki: 8.8 µM (Rat H3 receptor), 1.44 µM (Mouse H3 receptor), 1.2 µM (Human H3 receptor) |
| Invitro |
In cellular models, S 38093 is able to antagonize mice H3 receptors (KB=0.65 µM) and to suppress cAMP decrease induced by an H3 agonist via human H3 receptors (KB=0.11 µM). In cells expressing a high H3 density, S 38093 behaves as a moderate inverse agonist at rat and human H3 receptors (EC50=9 and 1.7 µM, respectively)[2]. |
| In Vivo |
S 38093 (0.3 and 3 mg/kg/d p.o., 28 days) significantly increases proliferation of progenitors in the DG of hippocampus in young adult mice. S 38093 (0.3 mg/kg/d) treatment significantly increases the number of DCX+ cells with tertiary dendrites. S 38093 (0.3, 1 and/or 3 mg/kg) significantly increases cell proliferation, survival, and maturation in the DG of hippocampus in aged mice relative to vehicle. S 38093 (3 mg/kg/d p.o., 28 days) increases cell proliferation and has a strong effect on cell survival, also increases the dendritic intersections in both genotypes (one-way ANOVA with repeated measure, p < 0.01), with a significant effect from 50 to 80 in APPSWETG mice only. In aged mice, chronic administration of S 38093 (1 and/or 3 mg/kg/day p.o., 28 days) reverses this age-dependent decrease in BDNF-IX, BDNF-IV and BDNF-I transcripts. In addition, S 38093 at three tested doses (0.3, 1 and 3 mg/kg/d) increases VEGF transcripts compared to vehicle-aged group[1]. In mice, S 38093 significantly increases ex vivo N-tele-Methylhistamine cerebral levels from 3 mg/kg p.o. and antagonized R-α-Methylhistamine-induced dipsogenia from 10 mg/kg i.p[2]. |
| Name |
S 38093 |
| CAS |
862896-30-8 |
| Formula |
C17H24N2O2 |
| Molar Mass |
288.38 |
| Appearance |
Solid |
| Transport |
Room temperature in continental US; may vary elsewhere. |
| Storage |
| Powder |
-20°C |
3 years |
|
4°C |
2 years |
| In solvent |
-80°C |
6 months |
|
-20°C |
1 month |
|
| Reference |
[1]. Guilloux JP, et al. S 38093, a histamine H3 antagonist/inverse agonist, promotes hippocampal neurogenesis and improves context discrimination task in aged mice. Sci Rep. 2017 Feb 20;7:42946. [2]. Sors A, et al. Mechanistic characterization of S 38093, a novel inverse agonist at histamine H3 receptors. Eur J Pharmacol. 2017 May 15;803:11-23 |
