The Disruption of Liver Metabolic Circadian Rhythms by a Cafeteria Diet Is Sex-Dependent in Fischer 344 Rats

被引:15
作者
Palacios-Jordan, Hector [1 ,2 ]
Martin-Gonzalez, Miguel Z. [1 ]
Suarez, Manuel [1 ]
Aragones, Gerard [1 ]
Muguerza, Begona [1 ]
Rodriguez, Miguel A. [2 ]
Blade, Cinta [1 ]
机构
[1] Univ Rovira & Virgili, Dept Biochem & Biotechnol, Nutrigenom Res Grp, Tarragona 43007, Spain
[2] Eurecat, Ctr Tecnol Catalunya, Ctr Omic Sci COS, Joint Unit Univ Rovira & Virgili EURECAT,Unique S, Reus 43204, Spain
关键词
circadian rhythms; obesity; gender; liver; metabolomics; LOW-DENSITY LIPOPROTEIN; HOMOCYSTEINE S-METHYLTRANSFERASE; FATTY LIVER; PHOSPHATIDYLCHOLINE BIOSYNTHESIS; CLOCK; CHOLINE; OBESITY; EXPRESSION; SECRETION; BETAINE;
D O I
10.3390/nu12041085
中图分类号
R15 [营养卫生、食品卫生]; TS201 [基础科学];
学科分类号
100403 ;
摘要
Circadian rhythms are ~24 h fluctuations of different biological processes that are regulated by the circadian clock system. They exert a major influence on most of the metabolism, such as the hepatic metabolism. This rhythmicity can be disrupted by obesogenic diets, fact that is considered to be a risk factor for the development of metabolic diseases. Nevertheless, obesogenic diets do not affect both genders in the same manner. We hypothesized that the circadian rhythms disruption of the hepatic metabolism, caused by obesogenic diets, is gender-dependent. Male and female Fischer 344 rats were fed either a standard diet or a cafeteria diet and sacrificed at two different moments, at zeitgeber 3 and 15. Only female rats maintained the circadian variations of the hepatic metabolism under a cafeteria diet. Most of those metabolites were related with the very low density lipoprotein (VLDL) synthesis, such as choline, betaine or phosphatidylcholine. Most of these metabolites were found to be increased at the beginning of the dark period. On the other hand, male animals did not show these time differences. These findings suggest that females might be more protected against the circadian disruption of the hepatic metabolism caused by a cafeteria diet through the increase of the VLDL synthesis at the beginning of the feeding time.
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页数:12
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