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DSP-1053, a novel serotonin reuptake inhibitor with 5-HT1A partial agonistic activity, displays fast antidepressant effect with minimal undesirable effects in juvenile rats.

Kato T, Matsumoto Y, Yamamoto M, Matsumoto K, Baba S, Nakamichi K, Matsuda H, Nishimuta H, Yabuuchi K - Pharmacol Res Perspect (2015)

Bottom Line: In the rat forced swimming test, 2-week administration of DSR-1053 (1 mg kg(-1)) significantly reduced rats immobility time after treatment, whereas paroxetine (3 and 10 mg kg(-1)) required 3-week administration to reduce rats immobility time.In olfactory bulbectomy model, 1- and 2-week administration of DSP-1053 reduced both of emotional scores and activity in the open field, whereas paroxetine required 2 weeks to show similar beneficial effects.Although single administration of DSP-1053-induced emesis and vomiting in the rat and Suncus murinus, multiple treatment with this compound, but not with paroxetine, decreased the number of vomiting episodes.

View Article: PubMed Central - PubMed

Affiliation: Drug Development Research Laboratories, Sumitomo Dainippon Pharma Co. Ltd. Osaka, Japan.

ABSTRACT
Enhancement of serotonergic neurotransmission has been the main stream of treatment for patients with depression. However, delayed therapeutic onset and undesirable side effects are major drawbacks for conventional serotonin reuptake inhibitors. Here, we show that DSP-1053, a novel serotonin reuptake inhibitor with 5-HT1A partial agonistic activity, displays fast antidepressant efficacy with minimal undesirable effects, especially nausea and emesis in animal models. DSP-1053 bound human serotonin transporter and 5-HT1A receptor with the K i values of 1.02 ± 0.06 and 5.05 ± 1.07 nmol/L, respectively. This compound inhibited the serotonin transporter with an IC50 value of 2.74 ± 0.41 nmol/L and had an intrinsic activity for 5-HT1A receptors of 70.0 ± 6.3%. In rat microdialysis, DSP-1053, given once at 3 and 10 mg kg(-1), dose-dependently increased extracellular 5-HT levels. In the rat forced swimming test, 2-week administration of DSR-1053 (1 mg kg(-1)) significantly reduced rats immobility time after treatment, whereas paroxetine (3 and 10 mg kg(-1)) required 3-week administration to reduce rats immobility time. In olfactory bulbectomy model, 1- and 2-week administration of DSP-1053 reduced both of emotional scores and activity in the open field, whereas paroxetine required 2 weeks to show similar beneficial effects. Although single administration of DSP-1053-induced emesis and vomiting in the rat and Suncus murinus, multiple treatment with this compound, but not with paroxetine, decreased the number of vomiting episodes. These results highlight the important role of 5-HT1A receptors in both the efficacy and tolerability of DSP-1053 as a new therapeutic option for the treatment of depression.

No MeSH data available.


Related in: MedlinePlus

Effect of DSP-1053 on saccharin consumption in rat conditioned taste aversion test. (A) Each bar represents the mean ± SEM of water or saccharin consumption (g) on each day (n = 6). (B) Each bar represents the mean ± SEM of saccharin consumption ratio of day 4/day 3. *P < 0.05, **P < 0.01, compared with the vehicle-treated group using Tukey’s test.
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fig07: Effect of DSP-1053 on saccharin consumption in rat conditioned taste aversion test. (A) Each bar represents the mean ± SEM of water or saccharin consumption (g) on each day (n = 6). (B) Each bar represents the mean ± SEM of saccharin consumption ratio of day 4/day 3. *P < 0.05, **P < 0.01, compared with the vehicle-treated group using Tukey’s test.

Mentions: On Day 4, DSP-1053 (100 mg kg−1) significantly inhibited saccharin consumption 24 h after administration compared to the vehicle, F(2, 15) = 4.73, P < 0.05 (Fig.7A). Saccharine intake ratio was significantly inhibited at the doses of 60 and 100 mg kg−1, F(2, 15) = 22.77, P < 0.05 (Fig.7B).


DSP-1053, a novel serotonin reuptake inhibitor with 5-HT1A partial agonistic activity, displays fast antidepressant effect with minimal undesirable effects in juvenile rats.

Kato T, Matsumoto Y, Yamamoto M, Matsumoto K, Baba S, Nakamichi K, Matsuda H, Nishimuta H, Yabuuchi K - Pharmacol Res Perspect (2015)

Effect of DSP-1053 on saccharin consumption in rat conditioned taste aversion test. (A) Each bar represents the mean ± SEM of water or saccharin consumption (g) on each day (n = 6). (B) Each bar represents the mean ± SEM of saccharin consumption ratio of day 4/day 3. *P < 0.05, **P < 0.01, compared with the vehicle-treated group using Tukey’s test.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4492758&req=5

fig07: Effect of DSP-1053 on saccharin consumption in rat conditioned taste aversion test. (A) Each bar represents the mean ± SEM of water or saccharin consumption (g) on each day (n = 6). (B) Each bar represents the mean ± SEM of saccharin consumption ratio of day 4/day 3. *P < 0.05, **P < 0.01, compared with the vehicle-treated group using Tukey’s test.
Mentions: On Day 4, DSP-1053 (100 mg kg−1) significantly inhibited saccharin consumption 24 h after administration compared to the vehicle, F(2, 15) = 4.73, P < 0.05 (Fig.7A). Saccharine intake ratio was significantly inhibited at the doses of 60 and 100 mg kg−1, F(2, 15) = 22.77, P < 0.05 (Fig.7B).

Bottom Line: In the rat forced swimming test, 2-week administration of DSR-1053 (1 mg kg(-1)) significantly reduced rats immobility time after treatment, whereas paroxetine (3 and 10 mg kg(-1)) required 3-week administration to reduce rats immobility time.In olfactory bulbectomy model, 1- and 2-week administration of DSP-1053 reduced both of emotional scores and activity in the open field, whereas paroxetine required 2 weeks to show similar beneficial effects.Although single administration of DSP-1053-induced emesis and vomiting in the rat and Suncus murinus, multiple treatment with this compound, but not with paroxetine, decreased the number of vomiting episodes.

View Article: PubMed Central - PubMed

Affiliation: Drug Development Research Laboratories, Sumitomo Dainippon Pharma Co. Ltd. Osaka, Japan.

ABSTRACT
Enhancement of serotonergic neurotransmission has been the main stream of treatment for patients with depression. However, delayed therapeutic onset and undesirable side effects are major drawbacks for conventional serotonin reuptake inhibitors. Here, we show that DSP-1053, a novel serotonin reuptake inhibitor with 5-HT1A partial agonistic activity, displays fast antidepressant efficacy with minimal undesirable effects, especially nausea and emesis in animal models. DSP-1053 bound human serotonin transporter and 5-HT1A receptor with the K i values of 1.02 ± 0.06 and 5.05 ± 1.07 nmol/L, respectively. This compound inhibited the serotonin transporter with an IC50 value of 2.74 ± 0.41 nmol/L and had an intrinsic activity for 5-HT1A receptors of 70.0 ± 6.3%. In rat microdialysis, DSP-1053, given once at 3 and 10 mg kg(-1), dose-dependently increased extracellular 5-HT levels. In the rat forced swimming test, 2-week administration of DSR-1053 (1 mg kg(-1)) significantly reduced rats immobility time after treatment, whereas paroxetine (3 and 10 mg kg(-1)) required 3-week administration to reduce rats immobility time. In olfactory bulbectomy model, 1- and 2-week administration of DSP-1053 reduced both of emotional scores and activity in the open field, whereas paroxetine required 2 weeks to show similar beneficial effects. Although single administration of DSP-1053-induced emesis and vomiting in the rat and Suncus murinus, multiple treatment with this compound, but not with paroxetine, decreased the number of vomiting episodes. These results highlight the important role of 5-HT1A receptors in both the efficacy and tolerability of DSP-1053 as a new therapeutic option for the treatment of depression.

No MeSH data available.


Related in: MedlinePlus