title: Alanyl-glutamine and glutamine supplementation improves 5-fluorouracil-induced intestinal epithelium damage in vitro.
abstract: In this study, we have examined the role of glutamine derivatives in reducing 5-fluorouracil (5-FU)-induced epithelial damage in an undifferentiated crypt intestinal cell line, IEC-6. In this model, we have investigated proliferation indirectly by detecting the enzyme-derived formazan dye from the tetrazolium salt WST-1 in viable cells at 24 and 48 h after 5-FU treatment. Migration was measured at 12 and 24 h after razor scraping of the cell monolayer. Cell death was measured by quantifying the percentage of apoptotic and necrotic figures by flow cytometry at 12 and 24 h following 5-FU challenge. Neither glutamine nor alanyl-glutamine prevented 5-FU-induced apoptosis and necrosis in IEC-6 cells at 12 and 24 h after 5-FU challenge. However, glutamine and alanyl-glutamine enhanced migration and proliferation when compared with 5-FU-treated controls (P < 0.05). These new findings support our earlier study on the benefit of oral glutamine in enhancing epithelial recovery after 5-FU challenge.
authors.affiliation: Institute of Biomedicine and Clinical Research Unit-University Hospital, Federal University of Ceará, Fortaleza, Brazil.
authors.forename: Manuel B
authors.initials: MB
authors.lastname: Braga-Neto
authors.forename: Cirle A
authors.initials: CA
authors.lastname: Warren
authors.forename: Reinaldo B
authors.initials: RB
authors.lastname: Oriá
authors.forename: Manuel S
authors.initials: MS
authors.lastname: Monteiro
authors.forename: Andressa A S
authors.initials: AA
authors.lastname: Maciel
authors.forename: Gerly A C
authors.initials: GA
authors.lastname: Brito
authors.forename: Aldo A M
authors.initials: AA
authors.lastname: Lima
authors.forename: Richard L
authors.initials: RL
authors.lastname: Guerrant
mesh_terms: D000818:Animals; D000964:Antimetabolites, Antineoplastic / Q000009:adverse effects* / Q000494:pharmacology; D017209:Apoptosis / Q000187:drug effects; D002460:Cell Line; D002465:Cell Movement / Q000187:drug effects; D049109:Cell Proliferation / Q000187:drug effects; D004151:Dipeptides / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D005472:Fluorouracil / Q000009:adverse effects* / Q000494:pharmacology; D005973:Glutamine / Q000494:pharmacology*; D007413:Intestinal Mucosa / Q000166:cytology / Q000187:drug effects*; D007583:Jejunum / Q000166:cytology / Q000187:drug effects*; D023421:Models, Animal; D051381:Rats; D013997:Time Factors
chemical_list: D000964:Antimetabolites, Antineoplastic; D004151:Dipeptides; D005973:Glutamine; D005472:Fluorouracil; C054122:alanylglutamine