Exploring the clinical relevance of "Angico Gum": an effective biopolymer for topical protection of oesophageal mucosa in gastroesophageal reflux disease patients.

Abstract

OBJECTIVES:

Angico gum (AG) (Anadenanthera colubrina var. Cebil [Griseb.] Altschul) is utilized by some Brazilian communities to alleviate symptoms from gastroesophageal reflux disease. Here, we aimed to investigate the "in vitro" topical protective capacity of AG on human esophageal mucosa.

METHODS:

Biopsies of the distal esophageal mucosa were collected from 35 patients with heartburn (24 non-erosive and 11 with erosive oesophagitis (EE)) and mounted in Üssing chambers. AG was applied topically, followed by exposure with acid solution (pH 2.0 or pH 1.0), where transepithelial electrical resistance (TER) and The transepithelial permeability for fluorescein was assessed. The incubation of the AG labeled with FITC in the esophageal mucosa was localized by fluorescence microscopy.

KEY FINDINGS:

Pretreatment with AG prevented the drop in TER induced by acid solution, as well as significantly decreases the fluorescein permeability in non-erosive patients. The protective effect of AG was sustained for up to 120 min both in biopsies of non-erosive and erosive esophagitis. Confocal microscope images showed mucosal luminal adherence of FITC-labeled AG.

CONCLUSION:

AG had a prolonged topical protective effect against acid solution in mucosal biopsies of patients with non-erosive and erosive esophagitis.

• Authors: Rudy Diavila Bingana, Lucas Antonio Duarte Nicolau, Thiago Meneses Araújo Leite Sales, Suliana Mesquita Paula, João Pedro do Carmo Neto, Isabela Araújo Linhares Castro, Luiz Fernando Lopes Soares Teixeira, Alvaro Xavier Franco, Fábio de Oliveira Silva Ribeiro, Regina Célia Monteiro de Paula, Jand Venes Rolim Medeiros, Durcilene Alves da Silva, Daniel Sifrim, Marcellus Henrique Loiola Ponte Souza
• Journal: The Journal of pharmacy and pharmacology (J Pharm Pharmacol) (Mar 28 2024) ISSN: 2042-7158 [Electronic] England
• PMID: 38546507 (Publication Type: Journal Article)
• Copyright: © The Author(s) 2024. Published by Oxford University Press on behalf of the Royal Pharmaceutical Society. All rights reserved. For permissions, please e-mail: [email protected].