The Lowering Effect of Dietary Glucose Versus Starch on Fat Digestibility in Rats is Dependent on the Type of Fat in the Diet

2000 ◽  
Vol 70 (4) ◽  
pp. 191-194 ◽  
Author(s):  
Geertruida Vissia ◽  
Anton Beynen

The aim of the study was to determine whether the type of dietary fat influences the effect of dietary glucose on lipid digestibility. Earlier work had shown that glucose, when compared with starch, reduced fat digestibility in rats fed rations containing animal fat as fat source. Male rats (n = 6/group) were fed for two weeks on purified diets containing either 62% (w/w) starch or glucose and either 8% (w/w) palm oil, coconut fat, soybean oil or medium-chain triglycerides (MCT) as the main source of fat. The diets had no differential effect on growth. Glucose significantly depressed apparent lipid digestibility in rats fed the diets containing either palm oil or coconut fat, but not in rats given the diets containing either soybean oil or MCT. Thus, the inhibitory effect of glucose on lipid digestibility in rats is dependent on the dietary lipid source. This observation may contribute to understanding the mechanism by which dietary glucose inhibits fat digestion.

2012 ◽  
Vol 45 (9) ◽  
pp. 1567-1572 ◽  
Author(s):  
Zhili Ding ◽  
Liqiao Chen ◽  
Zhenyu Du ◽  
Haibo Jiang ◽  
Shengming Sun ◽  
...  

1999 ◽  
Vol 82 (4) ◽  
pp. 319-327 ◽  
Author(s):  
María P. Portillo ◽  
Ana I. Tueros ◽  
Javier S. Perona ◽  
Valentina Ruiz-Gutiérrez ◽  
Isabel Torres ◽  
...  

The aim of the present work was to assess the influence of dietary lipid source on fatty acid phospholipid profiles and on lipid mobilization. Forty male Wistar rats were divided into four groups and fed on high-fat diets which provided olive oil, sunflower oil, palm oil or beef tallow. All rats received the same amount of energy to avoid hyperphagia and differences in energy intake among groups. Phospholipid fatty acids were determined by GC. Lipolysis was stimulated in subcutaneous and perirenal isolated adipocytes by several lipolytic agents, and assessed by the determination of released glycerol. After 4 weeks of feeding, differences in body and adipose tissue weights were not observed. Dietary regimens caused great changes in adipose tissue phospholipid composition: rats fed on palm oil and beef tallow had higher concentrations of saturated fatty acids and animals fed on olive oil or sunflower oil had greater amounts of oleic and linoleic acids, respectively. These modifications did not lead to important changes in adipocyte lipolysis. Significant differences were only observed between palm-oil- and beef-tallow-fed groups when lipolysis was stimulated by isoproterenol in subcutaneous adipocytes. The fact that our feeding protocol did not induce differences in fat accumulation among groups avoids misinterpretations due to adiposity changes. The differences observed between both saturated-fat-fed groups, therefore, should only be attributable to dietary lipids. Despite this effect, the data from this work indicate that some diet-induced changes in adipose tissue fatty acid composition may have little effect on overall function.


2015 ◽  
Vol 114 (10) ◽  
pp. 1584-1593 ◽  
Author(s):  
Carolina Castro ◽  
Amalia Peréz-Jiménez ◽  
Filipe Coutinho ◽  
Patricia Díaz-Rosales ◽  
Cláudia Alexandra dos Reis Serra ◽  
...  

AbstractThis study aimed to evaluate the effects of dietary lipid source and carbohydrate content on the oxidative status of European sea bass (Dicentrarchus labrax) juveniles. For that purpose, four diets were formulated with fish oil (FO) and vegetable oils (VO) as the lipid source and with 20 or 0 % gelatinised starch as the carbohydrate source, in a 2×2 factorial design. Liver and intestine antioxidant enzyme activities (catalase (CAT), superoxide dismutase (SOD), glutathione peroxidase (GPX), glutathione reductase (GR), glucose-6-phosphate dehydrogenase (G6PD)), hepatic and intestinal lipid peroxidation (LPO), as well as hepatic oxidative stress index (OSI), were measured in fish fed the experimental diets for 73 d (n9 fish/diet). Carbohydrate-rich diets promoted a decrease in hepatic LPO and OSI, whereas the lipid source induced no changes. Inversely, dietary lipid source, but not dietary carbohydrate concentration, affected LPO in the intestine. Lower intestinal LPO was observed in VO groups. Enzymes responsive to dietary treatments were GR, G6PD and CAT in the liver and GR and GPX in the intestine. Dietary carbohydrate induced GR and G6PD activities and depressed CAT activity in the liver. GPX and GR activities were increased in the intestine of fish fed VO diets. Overall, effects of diet composition on oxidative status were tissue-related: the liver and intestine were strongly responsive to dietary carbohydrates and lipid sources, respectively. Furthermore, different metabolic routes were more active to deal with the oxidative stress in the two organs studied.


2011 ◽  
Vol 44 (2) ◽  
pp. 182-199 ◽  
Author(s):  
Erin N. Friesen ◽  
Shannon K. Balfry ◽  
Brent J. Skura ◽  
Michael G. Ikonomou ◽  
Dave A. Higgs

2018 ◽  
Vol 84 (2) ◽  
pp. 385-397
Author(s):  
Mohd Salleh Kamarudin ◽  
Mahkameh Lashkarizadeh Bami ◽  
Aziz Arshad ◽  
Che Roos Saad ◽  
Mahdi Ebrahimi

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