Volume 32, Issue 5 e13795
ORIGINAL ARTICLE

Pharmacological evaluation of a novel corticotropin-releasing factor 1 receptor antagonist T-3047928 in stress-induced animal models in a comparison with alosetron

Yasuo Itomi

Yasuo Itomi

Inflammation DDU, Pharmacological Research Division, Takeda Pharmaceutical Company Limited, Kanagawa, Japan

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Takahiro Tanaka

Takahiro Tanaka

Inflammation DDU, Pharmacological Research Division, Takeda Pharmaceutical Company Limited, Kanagawa, Japan

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Kozo Matsushita

Kozo Matsushita

Inflammation DDU, Pharmacological Research Division, Takeda Pharmaceutical Company Limited, Kanagawa, Japan

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Toru Kawamura

Toru Kawamura

Inflammation DDU, Pharmacological Research Division, Takeda Pharmaceutical Company Limited, Kanagawa, Japan

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Takuto Kojima

Takuto Kojima

Inflammation DDU, Pharmacological Research Division, Takeda Pharmaceutical Company Limited, Kanagawa, Japan

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Kazuyoshi Aso

Kazuyoshi Aso

Inflammation DDU, Pharmacological Research Division, Takeda Pharmaceutical Company Limited, Kanagawa, Japan

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Shiho Matsumoto-Okano

Shiho Matsumoto-Okano

Inflammation DDU, Pharmacological Research Division, Takeda Pharmaceutical Company Limited, Kanagawa, Japan

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Yasuhiro Tsukimi

Corresponding Author

Yasuhiro Tsukimi

Inflammation DDU, Pharmacological Research Division, Takeda Pharmaceutical Company Limited, Kanagawa, Japan

Correspondence

Yasuhiro Tsukimi, Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan.

Email: [email protected]

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First published: 22 January 2020
Citations: 2

[The copyright line for this article was changed on 24 July 2020 after original online publication.]

Abstract

Background

The major symptoms of irritable bowel syndrome (IBS) are changes in bowel habits and abdominal pain. Psychological stress is the major pathophysiological components of IBS. Corticotropin-releasing factor (CRF) is a well-known integrator in response to psychological stress. In this study, a novel CRF1 receptor antagonist T-3047928 was evaluated in stress-induced IBS models of rats to explore its potency for IBS.

Methods

Plasma adrenocorticotropic hormone (ACTH) levels after intravenous oCRH challenge were measured as a pharmacodynamic marker. Efficacies of oral T-3047928 were compared with oral alosetron, a 5-HT3 antagonist, on conditioning fear stress (CFS)-induced defecation, restraint stress (RS)-induced acute visceral pain, specific alteration of rhythm in temperature (SART) stress-induced chronic visceral pain, and normal defecation.

Results

T-3047928 (1-10 mg/kg, p.o.) demonstrated a dose-dependent inhibition on oCRH-induced ACTH secretion. In disease models, T-3047928 suppressed fecal pellet output induced by CFS and improved both acute and chronic visceral hypersensitivity induced by RS and SART stress, respectively. Alosetron was also efficacious in stress-induced defecation and visceral pain models at 1 and 10 mg/kg, respectively. Alosetron, however, also suppressed normal defecation at lower those. On the other hand, T-3047928 did not change normal defecation even at higher dose than those in disease models.

Conclusion

T-3047928 is an orally active CRF1 antagonist that demonstrated potent inhibitory effects in stress-associated IBS models with no effect on normal defecation. Therefore, it is suggested that T-3047928 may have a potency as a novel option for IBS-D therapy with minimal constipation risk.

CONFLICT OF INTEREST

The authors have no competing interests.

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