Cd36 knockout mice are protected against lithogenic diet-induced gallstones.
J Lipid Res
; 58(8): 1692-1701, 2017 08.
Article
en En
| MEDLINE
| ID: mdl-28634191
ABSTRACT
The scavenger receptor and multiligand transporter CD36 functions to promote cellular free fatty acid uptake and regulates aspects of both hepatic and intestinal cholesterol metabolism. However, the role of CD36 in regulating canalicular and biliary cholesterol transport and secretion is unknown. Here, we show that germline Cd36 knockout (KO) mice are protected against lithogenic diet (LD)-induced gallstones compared with congenic (C57BL6/J) controls. Cd36 KO mice crossed into congenic L-Fabp KO mice (DKO mice) demonstrated protection against LD-induced gallstones, reversing the susceptibility phenotype observed in L-Fabp KO mice. DKO mice demonstrated reduced biliary cholesterol secretion and a shift into more hydrophophilic bile acid species, without changes in either BA pool size or fecal excretion. In addition, we found that the mean and maximum force of gallbladder contraction was increased in germline Cd36 KO mice, and gallbladder lipid content was reduced compared with wild-type controls. Finally, whereas germline Cd36 KO mice were protected against LD-induced gallstones, neither liver- nor intestine-specific Cd36 KO mice were protected. Taken together, our findings show that CD36 plays an important role in modifying gallstone susceptibility in mice, at least in part by altering biliary lipid composition, but also by promoting gallbladder contractility.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Cálculos Biliares
/
Antígenos CD36
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Dieta
Tipo de estudio:
Etiology_studies
Límite:
Animals
Idioma:
En
Revista:
J Lipid Res
Año:
2017
Tipo del documento:
Article
País de afiliación:
Macao