de Castro Luíla Ivini Andrade, Soares Rosana Aparecida Manólio, Saldiva Paulo H N, Ferrari Roseli A, Miguel Ana M R O, Almeida Claudia A S, Arêas José Alfredo Gomes
Programa Interunidades em Nutrição Humana Aplicada, Universidade de São Paulo, Av. Prof. Lineu Prestes 580, 05508-900 São Paulo, Brazil.
Lipids. 2013 Jun;48(6):609-18. doi: 10.1007/s11745-013-3772-8. Epub 2013 Mar 2.
Hamsters were fed for 4 weeks on four different diets: control (C) (balanced diet containing 20 % corn oil as the lipid source), hypercholesterolemic (H) (identical to C but containing 12 % coconut oil, 8 % corn oil and 0.1 % cholesterol as the lipid source), amaranth oil (A) (identical to H without corn oil but with amaranth oil), and squalene (S) (identical to H but admixed with squalene in the ratio found in amaranth oil). There were no significant differences in lipid profile, and in the cholesterol excreted in the animals' feces from amaranth oil (A) and squalene (S) groups. Fecal excretion of bile acids was greater in the amaranth oil (A) and squalene groups (S) as compared to the other groups. The scores of steatosis and parenchymal inflammation observed in the amaranth oil (A) and squalene groups (S) were superior to the ones observed in the other groups. Our findings demonstrated that amaranth oil, and its component squalene, increased the excretion of bile acids but did not have a hypocholesterolemic effect in hamsters fed on a diet containing high amounts of saturated fat and cholesterol.
仓鼠被喂食四种不同的饮食长达4周:对照组(C)(含有20%玉米油作为脂质来源的均衡饮食)、高胆固醇组(H)(与C组相同,但含有12%椰子油、8%玉米油和0.1%胆固醇作为脂质来源)、苋菜油组(A)(与H组相同,但不含玉米油,而是含有苋菜油)和角鲨烯组(S)(与H组相同,但按苋菜油中发现的比例与角鲨烯混合)。脂质谱以及苋菜油(A)组和角鲨烯(S)组动物粪便中排泄的胆固醇没有显著差异。与其他组相比,苋菜油(A)组和角鲨烯(S)组的胆汁酸粪便排泄量更大。在苋菜油(A)组和角鲨烯(S)组中观察到的脂肪变性和实质炎症评分优于其他组。我们的研究结果表明,在以富含饱和脂肪和胆固醇的饮食喂养的仓鼠中,苋菜油及其成分角鲨烯增加了胆汁酸的排泄,但没有降胆固醇作用。