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World J Gastroenterol. 2013 Dec 14;19(46):8671-7. doi: 10.3748/wjg.v19.i46.8671.

Dietary-suppression of hepatic lipogenic enzyme expression in intact male transgenic mice.

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  • Maria Notarnicola, Maria Gabriella Caruso, Valeria Tutino, Laboratory of Nutritional Biochemistry, National Institute for Digestive Diseases, Castellana Grotte, 70013 Bari, Italy.



To study, in intact male transgenic mice, the effects of three diets based on olive oil and olive oil diet supplemented with lovastatin and orlistat on hepatic lipogenic enzymes expression, considered markers of cell proliferation.


Forty Apc(Min/+) mice were randomly divided into 4 groups and fed for 10 wk: olive oil (OO) group, n = 10 animals received a diet with olive oil 12%; olive oil plus lovastatin (LOVA) group, n = 10 animals received the same diet with olive oil supplemented with lovastatin 5 mg/kg; olive oil plus orlistat (OR) group, n = 10 animals fed the diet with olive oil supplemented with orlistat 50 mg/kg and SD group, n = 10 animals fed a standard diet. The activity of lipogenic enzymes and their gene expression were evaluated by radiometric and real-time reverse transcription-polymerase chain reaction assay, respectively.


After 10 wk of dietary treatment, the body weight was no different among animal groups (21.3 ± 3.1 g for standard group, 22.1 ± 3.6 g for OO group, 22.0 ± 3.2 g for LOVA group and 20.7 ± 3.4 g for OR group, data expressed as mean ± SD), observing a generalized well-being in all animals. All the dietary managed treated groups presented significantly reduced hepatic levels of fatty acid synthase, farnesyl pyrophosphate synthase and 3-hydroxyl-3-methyl-glutaryl CoA reductase activity and gene expression when compared with the mice fed the standard diet. To evaluate cell proliferation in the liver of treated mice, the levels of cyclin E mRNA have been measured, demonstrating a significant reduction of cyclin E gene expression in all treated groups. Evidence of reduced hepatic cell proliferation was present overall in OO group mice.


We confirm the role of lipogenic enzymes as markers of cell proliferation, suggesting that appropriate dietary management alone or with drugs can be a feasible approach to counteract hepatic cell proliferation in mice.


Dietary treatment; Lipogenic enzymes; Liver; Markers of cell proliferation; Transgenic mice

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