CAN SUCRALFATE ENEMA PREVENT COLITIS IN COLONIC SEGMENTS WITHOUT FECAL TRANSIT?

Autor:	Mendonça RLS; Laboratório de Investigação Médica, Programa de Pós-Graduação em Ciências da Saúde, Universidade São Francisco, Bragança Paulista, SP, Brasil., Kanno DT; Laboratório de Investigação Médica, Programa de Pós-Graduação em Ciências da Saúde, Universidade São Francisco, Bragança Paulista, SP, Brasil., Pereira JA; Laboratório de Investigação Médica, Programa de Pós-Graduação em Ciências da Saúde, Universidade São Francisco, Bragança Paulista, SP, Brasil., Campos FG; Departamento de Gastroenterologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil., Silva CMGD; Departamento de Farmacologia, Centro Universitário da Uni Metrocamp, Campinas, SP, Brasil., Freitas BZP; Laboratório de Investigação Médica, Programa de Pós-Graduação em Ciências da Saúde, Universidade São Francisco, Bragança Paulista, SP, Brasil., Martinez CAR; Laboratório de Investigação Médica, Programa de Pós-Graduação em Ciências da Saúde, Universidade São Francisco, Bragança Paulista, SP, Brasil.; Departamento de Cirurgia, Universidade Estadual de Campinas - Unicamp, Campinas, São Paulo - SP, Brasil.
Jazyk:	Portuguese; English
Zdroj:	Arquivos brasileiros de cirurgia digestiva : ABCD = Brazilian archives of digestive surgery [Arq Bras Cir Dig] 2022 Jan 31; Vol. 34 (4), pp. e1630. Date of Electronic Publication: 2022 Jan 31 (Print Publication: 2022).
DOI:	10.1590/0102-672020210002e1630
Abstrakt:	Aim: Oxidative stress is one of the main mechanisms associated with the rupture of the defense mechanisms of the colonic epithelial barrier; it reduces the tissue content of the claudin-3 and occludin proteins, which are the main constituents of intercellular tight junctions. Sucralfate (SCF) has antioxidant activity and has been used to treat different forms of colitis. This study aimed to measure the tissue claudin-3 and occludin content of the colon mucosa without fecal transit, subjected to intervention with SCF. Methods: Thirty-six rats were subjected to left colon colostomy and distal mucous fistula. They were divided into two groups according to euthanasia that was performed 2 or 4 weeks after the intervention. Each group was divided into three subgroups according to the enema applied daily: saline alone, SCF at 1 g/kg/day, or SCF at 2 g/kg/day. Colitis was diagnosed by the histological analysis adopting the previous validate scale. The tissue expression of both proteins was identified by immunohistochemical technique. The content of proteins was quantified by computer-assisted image analysis. Results: The inflammatory score was high in colonic segments without fecal transit, and enemas with SCF reduced the inflammatory score in these segments, mainly in those animals submitted to intervention with SCF in greater concentration and for a longer period of intervention. There was an increase in tissue content of claudin-3 and occludin, related to SCF concentration. The tissue content of both proteins was not related to the intervention time. Conclusion: Enemas with SCF reduced the inflammation and increased the tissue content of claudin-3 and occludin in colonic mucosa without fecal stream.
Databáze:	MEDLINE
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