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CNS-Sparing Histamine H3 Receptor Antagonist as a Candidate to Prevent the Diabetes-Associated Gastrointestinal Symptoms

Lookup NU author(s): Dr Ilona Obara



This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).


Among the histamine receptors, growing evidence points to the histamine H3 receptor as a pharmacological candidate to counteract the autonomic neuropathy associated with diabetes. The study aimed to evaluate the effect of PF00868087 (also known as ZPL-868), a CNS-sparing histamine H3 receptor antagonist, on the autonomic neuropathy of the intestinal tract associated with diabetes. Diabetes was induced in male BALB/c mice by a single high dose of streptozotocin (150 mg/kg). Colorectal specimens from control and diabetic mice, randomized to vehicle or PF0086087 (10, 30, 100 mg/kg/day by oral gavage for 14 days), were processed for morphological and immunohistochemical analysis. A significant overproduction of mucus in the intestinal mucosa of diabetic mice compared to the controls was observed. PF0086087 at the highest dose prevented mucin overproduction. The immunohistochemistry analysis demonstrated that diabetes causes a decrease in the inhibitory component of enteric motility, measured as the percentage of neuronal nitric oxide synthase-positive neurons (p < 0.05) and a parallel increase in the excitatory component evaluated as substance P-positive fibres (p < 0.01). PF0086087 dose-dependently prevented these pathophysiological events. In conclusion, PF0086087 may be an essential tool in preventing nitrergic dysfunction in the myenteric plexus of the distal colon and diabetes-induced gastrointestinal complications.

Publication metadata

Author(s): Rosa AC, Nardini P, Sgambellone S, Gurrieri M, Spampinato SF, Dell'Accio A, Chazot PL, Obara I, Liu WL, Pini A

Publication type: Article

Publication status: Published

Journal: Biomolecules

Year: 2022

Volume: 12

Issue: 2

Print publication date: 01/02/2022

Online publication date: 22/01/2022

Acceptance date: 20/01/2022

Date deposited: 10/03/2022

ISSN (electronic): 2218-273X

Publisher: MDPI AG




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