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- W2023009702 abstract "Abstract This study aimed to clarify the molecular mechanisms of age‐specific hepatic lipid accumulation accompanying hyperinsulinemia in a peroxisome proliferator‐activated receptor α (PPARα) (+/−):low‐density lipoprotein receptor (LDLR) (+/−) mouse line. The hepatic fat content, protein amounts, and mRNA levels of genes involved in hepatic lipid metabolism were analyzed in 25‐, 50‐, 75‐ and 100‐week‐old mice. Severe fatty liver was confirmed only in 50‐ and 75‐week‐old mice. The hepatic expression of proteins that function in lipid transport and catabolism did not differ among the groups. In contrast, the mRNA levels and protein amounts of lipogenic enzymes, including acetyl‐coenzyme A carboxylase‐1, fatty acid synthase, and glycerol‐3‐phosphate acyltransferase, enhanced in the mice with fatty liver. Elevated mRNA and protein levels of lipoprotein lipase and fatty acid translocase, which are involved in hepatic lipid uptake, were also detected in mice with fatty liver. Moreover, both protein and mRNA levels of sterol regulatory element‐binding protein‐1 (SREBP‐1), a transcription factor regulating lipid synthesis, had age‐specific patterns similar to those of the proteins described above. Therefore, the age‐specific fatty liver found in the PPARα (+/−):LDLR (+/−) mouse line is probably caused by age‐specific expression of SREBP‐1 and its downstream lipogenic genes, coordinated by the increased uptake of lipids. All of these factors might be affected by age‐specific changes in serum insulin concentration." @default.
- W2023009702 created "2016-06-24" @default.
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- W2023009702 date "2008-03-12" @default.
- W2023009702 modified "2023-09-30" @default.
- W2023009702 title "Molecular Mechanism of Age-Specific Hepatic Lipid Accumulation in PPARα (+/−):LDLR (+/−) Mice, an Obese Mouse Model" @default.
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- W2023009702 doi "https://doi.org/10.1007/s11745-008-3161-x" @default.
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