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首页> 外文期刊>Journal of biochemical and molecular toxicology >Iron overload potentiates diet-induced hypercholesterolemia and reduces liver ppar-α expression in hamsters
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Iron overload potentiates diet-induced hypercholesterolemia and reduces liver ppar-α expression in hamsters

机译:铁超负荷可增强饮食引起的高胆固醇血症并降低仓鼠肝脏ppar-α的表达

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摘要

Iron stores and lipids are related to the development of cardiovascular disease. Given that peroxisome proliferator-activated receptor alpha (PPAR-α) regulates important physiological processes that impact lipid and glucose homeostasis, we decided to investigate the effects of iron overload on serum lipids and the liver expression of PPAR-α, 3-hydroxy-3-methylglutaryl coenzyme A reductase, and cholesterol 7α-hydroxylase. Hamsters were divided into four groups. The standard group (S) was fed the AIN-93M diet, the SI group was fed the diet and iron injections, the hypercholesterolemic group (H) was fed a standard diet containing cholesterol, and the HI group was fed a high-cholesterol diet and iron injections. Serum cholesterol in the HI group was higher than in the H group. Gene expression analysis of PPAR-α showed that the HI group had a lower PPAR-α expression than H. These data show that iron, when associated with a high-fat diet, can cause increased serum cholesterol levels, possibly due to a reduction in PPAR-α expression.
机译:铁和脂质与心血管疾病的发展有关。鉴于过氧化物酶体增殖物激活受体α(PPAR-α)调节影响脂质和葡萄糖稳态的重要生理过程,我们决定研究铁超负荷对血清脂质和PPAR-α,3-羟基-3肝脏表达的影响-甲基戊二酰辅酶A还原酶和胆固醇7α-羟化酶。仓鼠分为四组。标准组(S)的饮食为AIN-93M,SI组为饮食和铁注射,高胆固醇血症组(H)为含胆固醇的标准饮食,HI组为高胆固醇饮食和铁注射。 HI组的血清胆固醇高于H组。 PPAR-α的基因表达分析表明,HI组的PPAR-α表达低于H组。这些数据表明,铁与高脂饮食相关时,可引起血清胆固醇水平升高,可能是由于降低了PPAR-α表达。

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