scholarly journals Maternal high fat diet induces impaired polyunsaturated fatty acid synthesis in adult female offspring in rats

2011 ◽  
Vol 70 (OCE4) ◽  
Author(s):  
S. P. Hoile ◽  
N. A. Irvine ◽  
C. Kelsall ◽  
C. Torrens ◽  
K. A. Lillycrop ◽  
...  
2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Jing-Na Deng ◽  
Juan Li ◽  
Hong-Na Mu ◽  
Yu-Ying Liu ◽  
Ming-Xia Wang ◽  
...  

This study was to explore the protective effects of Deepure tea against insulin resistance and hepatic steatosis and elucidate the potential underlying molecular mechanisms. C57BL/6 mice were fed with a high fat diet (HFD) for 8 weeks to induce the metabolic syndrome. In the Deepure tea group, HFD mice were administrated with Deepure tea at 160 mg/kg/day by gavage for 14 days. The mice in HFD group received water in the same way over the same period. The age-matched C57BL/6 mice fed with standard chow were used as normal control. Compared to the mice in HFD group, mice that received Deepure tea showed significantly reduced plasma insulin and improved insulin sensitivity. Deepure tea increased the expression of insulin receptor substrate 2 (IRS-2), which plays an important role in hepatic insulin signaling pathway. Deepure tea also led to a decrease in hepatic fatty acid synthesis and lipid accumulation, which were mediated by the downregulation of sterol regulatory element binding protein 1c (SREBP-1c), fatty acid synthesis (FAS), and acetyl-CoA carboxylase (ACC) proteins that are involved in liver lipogenesis. These results suggest that Deepure tea may be effective for protecting against insulin resistance and hepatic steatosis via modulating IRS-2 and downstream signaling SREBP-1c, FAS, and ACC.


1969 ◽  
Vol 115 (4) ◽  
pp. 807-815 ◽  
Author(s):  
Stuart Smith ◽  
Harriet T. Gagné ◽  
Dorothy R. Pitelka ◽  
S. Abraham

1. Virgin and lactating C3H mice maintained on laboratory chow were transferred to a high-fat (15% corn oil) or a fat-free diet 3 days before being killed. 2. The linoleate content of liver, mammary gland and milk was decreased in lactating mice given the fat-free diet but was increased in those fed on the high-fat diet. Changes in linoleate content and mammary gland followed a similar but much less marked trend in virgin animals. 3. Hepatic fatty acid synthesis in lactating and virgin mice fed on the fat-free diet was higher than in corresponding animals fed on either the chow or the high-fat diet. The lipogenic capacity of livers from mice fed on either the chow or the high-fat diet was greater in lactating than in virgin animals. These changes in hepatic lipogenic capacity were accompanied by alterations in the specific activities of certain enzymes involved in fat synthesis. 4. Mammary gland from virgin and lactating animals showed no such adaptation to dietary fat. Results indicate that fatty acid synthesis in neither mammary-gland parenchymal cells nor mammary-gland adipose cells can be influenced by dietary fat in the same way as in the hepatocyte.


PLoS ONE ◽  
2017 ◽  
Vol 12 (4) ◽  
pp. e0176502 ◽  
Author(s):  
Sarah W. Renner ◽  
Lauren M. Walker ◽  
Lawrence J. Forsberg ◽  
Jonathan Z. Sexton ◽  
Jay E. Brenman

2016 ◽  
Vol 59 (1) ◽  
pp. 49-56 ◽  
Author(s):  
Hae Jin Lee ◽  
Dong-Ryung Lee ◽  
Bong-Keun Choi ◽  
Sung-Bum Park ◽  
Ying-Yu Jin ◽  
...  

2001 ◽  
Vol 86 (1) ◽  
pp. 31-36 ◽  
Author(s):  
Suzanne N. J. Geelen ◽  
Cristina Blázquez ◽  
Math J. H. Geelen ◽  
Marianne M. Sloet van Oldruitenborgh-Oosterbaan ◽  
Anton C. Beynen

The metabolic effects of feeding soyabean oil instead of an isoenergetic amount of maize starch plus glucose were studied in ponies. Twelve adult Shetland ponies were given a control diet (15 g fat/kg DM) or a high-fat diet (118 g fat/kg DM) according to a parallel design. The diets were fed for 45 d. Plasma triacylglycerol (TAG) concentrations decreased by 55 % following fat supplementation. Fat feeding also reduced glycogen concentrations significantly by up to 65 % in masseter, gluteus and semitendinosus muscles (P<0·05, P<0·01 and P<0·01 respectively). The high-fat diet significantly increased the TAG content of semitendinosus muscle by 80 % (P<0·05). Hepatic acetyl-CoA carboxylase and fatty acid synthase activities were 53 % (P<0·01) and 56 % (P<0·01) lower respectively in the high-fat group, but diacylglycerol acyltransferase activity was unaffected. Although carnitine palmitoyltransferase-I (CPT-I) activity in liver mitochondria was not influenced, fat supplementation did render CPT-I less sensitive to inhibition by malonyl-CoA. There was no significant effect of diet on the activity of phosphofructokinase in the different muscles. The activity of citrate synthase was raised significantly (by 25 %; P<0·05) in the masseter muscle of fat-fed ponies, as was CPT-I activity (by 46 %; P<0·01). We conclude that fat feeding enhances both the transport of fatty acids through the mitochondrial inner membrane and the oxidative capacity of highly-aerobic muscles. The higher oxidative ability together with the depressed rate of de novo fatty acid synthesis in liver may contribute to the dietary fat-induced decrease in plasma TAG concentrations in equines.


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