title: Cytotoxic damage of soybean agglutinin on intestinal epithelial cells of broiler chicks: in vitro protection by Bifidobacterium infantis CRL1395.
abstract: Plant lectins, which are proteins/glycoproteins present in a wide range of vegetables, fruits, cereals and beans, are resistant to digestive enzymes and food cooking temperatures. They bind reversibly to specific glycosidic residues expressed on the membrane of intestinal epithelial cells (IEC) and cause anti-nutritional effects in humans and animals. Soybean lectin (SBA) has been detected in poultry diets, and its ability to bind to the intestinal epithelium has been reported. The development of new methods for removing SBA from feeds or to prevent interaction with the intestinal mucosa is of interest. In this study, the in vitro cytotoxicity of SBA on IEC of chicks was demonstrated for the first time. The LD50, assessed after 2 h exposure of IEC to SBA, was 6.13 μg mL(-1) The ability of Bifidobacterium infantis CRL1395 to bind SBA on the bacterial envelope was confirmed, and prevention of IEC cytotoxicity by lectin removal was demonstrated. Safety of B. infantis CRL1395, resistance to gastrointestinal stress and adhesion were also determined. It was concluded that the early administration of B. infantis CRL1395 to chicks would effectively reduce the toxicity of SBA. Besides, it would favour the colonization of the gut with a beneficial microbiota.
authors.affiliation: Laboratorio de Ecofisiología Tecnológica, Centro de Referencia para Lactobacilos (CERELA)-CONICET, San Miguel de Tucumán 4000, Argentina jaimebabot@yahoo.com.ar.
authors.forename: Jaime D
authors.initials: JD
authors.lastname: Babot
authors.affiliation: Universidad Nacional de Tucumán, San Miguel de Tucumán 4000, Argentina.
authors.forename: Eloy
authors.initials: E
authors.lastname: Argañaraz-Martínez
authors.affiliation: Hospital Centro de Salud 'Zenón Santillán', San Miguel de Tucumán 4000, Argentina.
authors.forename: María J
authors.initials: MJ
authors.lastname: Lorenzo-Pisarello
authors.affiliation: Laboratorio de Ecofisiología Tecnológica, Centro de Referencia para Lactobacilos (CERELA)-CONICET, San Miguel de Tucumán 4000, Argentina Universidad Nacional de Tucumán, San Miguel de Tucumán 4000, Argentina.
authors.forename: María C
authors.initials: MC
authors.lastname: Apella
authors.affiliation: Laboratorio de Ecofisiología Tecnológica, Centro de Referencia para Lactobacilos (CERELA)-CONICET, San Miguel de Tucumán 4000, Argentina Universidad Nacional de Tucumán, San Miguel de Tucumán 4000, Argentina.
authors.forename: Adriana
authors.initials: A
authors.lastname: Perez Chaia
mesh_terms: D000818:Animals; D000070236:Bifidobacterium longum subspecies infantis / Q000378:metabolism*; D002645:Chickens; D003603:Cytotoxins / Q000494:pharmacology*; D004847:Epithelial Cells / Q000187:drug effects*; D007413:Intestinal Mucosa / Q000166:cytology / Q000187:drug effects* / Q000382:microbiology; D007422:Intestines / Q000382:microbiology; D007928:Lethal Dose 50; D037121:Plant Lectins / Q000378:metabolism / Q000633:toxicity*; D019936:Probiotics; D030262:Soybean Proteins / Q000378:metabolism / Q000633:toxicity*; D010835:Phytohemagglutinins
chemical_list: D003603:Cytotoxins; D037121:Plant Lectins; D030262:Soybean Proteins; C028824:soybean lectin; D010835:Phytohemagglutinins
keywords: Bifidobacterium; broiler chicks; cytotoxicity; intestinal epithelial cells; probiotics; soybean agglutinin