Antiulcerogenic effect from limonene in experimentally induced gastric ulcer

• Grant number: 16/25832-7
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: April 01, 2017
• End date: March 31, 2019
• Field of knowledge: Biological Sciences - Physiology - Physiology of Organs and Systems
• Principal Investigator: Ariane Leite Rozza
• Grantee: Matheus Chiaradia de Souza
• Host Institution: Instituto de Biociências (IBB). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil

Abstract

The imbalance between the attackers of the stomach mucosa factors and the ability of the mucosa on defending itself leads to the formation of gastric ulcer, a deep erosion in the wall of the stomach that penetrates throughout the thickness of the lining. Natural products derived from plants can protect against the development of gastric ulcers by suppressing the production of inflammatory cytokines and free radicals and stimulation of mucosal defense mechanisms. Limonene (C10H16) is a terpene present in the essential oil of the peel of fruits of genus Citrus and presents gastroprotective activity. The present study aims to determine the lowest effective dose for the gastroprotective effect from limonene, in addition to investigating the involvement of antioxidant and anti-inflammatory activities of limonene in stomach. Male Wistar rats (n = 8) will be undergoing gastric ulcer induction by absolute ethanol, after oral administration of limonene (25, 50 and 100 mg/kg), carbnoxolone (100 mg/kg, positive control) or vehicle (8 tween 80, negative control). After euthanasia, the ulcer area is calculated and compared between groups. Fragments of stomach will be intended for histological analysis (hematoxylin-eosin and periodic acid-Schiff staining). Other fragments are intended for investigation of antioxidant effect (activity of GPx, GR and SOD enzymes and GSH level), anti-inflammatory (level of cytokines TNF-±, IL-6 and IL-10) and infiltration of neutrophils (MPO activity). (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DE SOUZA, MATHEUS CHIARADIA; VIEIRA, ANA JULIA; BESERRA, FERNANDO PEREIRA; PELLIZZON, CLAUDIA HELENA; NOBREGA, RAFAEL HENRIQUE; ROZZA, ARIANE LEITE. Gastroprotective effect of limonene in rats: Influence on oxidative stress, inflammation and gene expression. Phytomedicine, v. 53, p. 37-42, FEB 2019. (16/25832-7)