LPS-squalene interaction on d-galactose intestinal absorption

Felices, María José ; Escusol, Sara ; Martinez-Beamonte, Roberto (Universidad de Zaragoza) ; Gascón, Sonia (Universidad de Zaragoza) ; Barranquero, Cristina ; Sanchez-de-Diego, Cristina ; Osada, Jesús (Universidad de Zaragoza) ; Rodríguez-Yoldi, María Jesús (Universidad de Zaragoza)

Resumen: The dynamic and complex interactions between enteric pathogens and the intestinal epithelium often lead to disturbances in the intestinal barrier, altered fluid, electrolyte, and nutrient transport and can produce an inflammatory response. Lipopolysaccharide (LPS) is a complex polymer forming part of the outer membrane of Gram-negative bacteria. On the other hand, squalene is a triterpene present in high levels in the extra-virgin olive oil that has beneficial effects against several diseases and it has also anti-oxidant and anti-inflammatory properties. The aim of this work was to study whether the squalene could eliminate the LPS effect on d-galactose intestinal absorption in rabbits and Caco-2 cells. The results have shown that squalene reduced the effects of LPS on sugar absorption. High LPS doses increased d-galactose uptake through via paracellular but also decreased the active sugar transport because the SGLT1 levels were diminished. However, the endotoxin effect on the paracellular way seemed to be more important than on the transcellular route. At the same time, an increased in RELM-ß expression was observed. This event could be related to inflammation and cause a decrease in SGLT1 levels. In addition, MLCK protein is also increased by LPS which could lead to an increase in sugar transport through tight junctions. At low doses, the LPS could inhibit SGLT1 intrinsic activity. Bioinformatic studies by docking confirm the interaction between LPS-squalene as well as occur through MLCK and SGLT-1 proteins. © 2019, University of Navarra.

Idioma: Inglés

DOI: 10.1007/s13105-019-00682-8

Año: 2019

Publicado en: Journal of Physiology and Biochemistry 75 (2019), 329–340
ISSN: 1138-7548

Factor impacto JCR: 2.952 (2019)

Categ. JCR: PHYSIOLOGY rank: 29 / 81 = 0.358 (2019) - Q2 - T2
Categ. JCR: BIOCHEMISTRY & MOLECULAR BIOLOGY rank: 161 / 296 = 0.544 (2019) - Q3 - T2

Factor impacto SCIMAGO: 0.868 - Medicine (miscellaneous) (Q1) - Physiology (Q2) - Biochemistry (Q2)

Financiación: info:eu-repo/grantAgreement/ES/CIBERObn/CB06-03-1012
Financiación: info:eu-repo/grantAgreement/ES/DGA/B16-R17
Financiación: info:eu-repo/grantAgreement/ES/MINECO/SAF2016-75441-R

Tipo y forma: Artículo (PostPrint)

Área (Departamento): Área Nutrición Bromatología (Dpto. Produc.Animal Cienc.Ali.)
Área (Departamento): Área Fisiología (Dpto. Farmacología y Fisiolog.)
Área (Departamento): Área Técnica. Lab. y Talleres (Dpto. Patología Animal)
Área (Departamento): Área Bioquímica y Biolog.Mole. (Dpto. Bioq.Biolog.Mol. Celular)