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Overweight Leads to an Increase in Vitamin E Absorption and Status in Mice
Molecular Nutrition & Food Research ( IF 4.5 ) Pub Date : 2024-11-16 , DOI: 10.1002/mnfr.202400509
Katherine Alvarado‐Ramos, Ángela Bravo‐Núñez, Donato Vairo, Charlotte Sabran, Jean‐François Landrier, Emmanuelle Reboul

ScopeThis study investigates whether vitamin E (VE) deficiency in subjects with obesity could, at least partly, be due to a defect in VE intestinal absorption.Methods and resultsMice follow either a high‐fat (HF) or a control (CTL) diet for 12 weeks. The study evaluates their VE status, the expression of genes encoding proteins involved in lipid and fat‐soluble vitamin intestinal absorption, and VE absorption using a γ‐tocopherol‐rich emulsion. HF mice have a weight (+23.0%) and an adiposity index (AI, +157.0) superior to CTL mice (p < 0.05). α‐Tocopherol concentrations are higher in both plasma (+45.0%) and liver (+116.9%) of HF mice compared to CTL mice (p < 0.05). α‐Tocopherol concentration in the adipose tissue of HF mice is higher than that of CTL mice after correction by the AI (+72.4%, p < 0.05). No difference is found in the expression of genes coding for proteins involved in intestinal lipid metabolism in fasting mice. After force‐feeding, γ‐tocopherol plasma concentration is higher in HF mice compared to CTL mice (+181.5% at 1.5 h after force‐feeding, p < 0.05).ConclusionHF mice display higher status and more efficient absorption of VE than CTL mice. VE absorption is thus likely not impaired in the early stages of obesity.

中文翻译:


超重导致小鼠维生素 E 吸收和状态增加



范围本研究调查了肥胖受试者的维生素 E (VE) 缺乏是否至少部分是由于 VE 肠道吸收缺陷。方法和结果小鼠遵循高脂肪 (HF) 或对照 (CTL) 饮食 12 周。该研究使用富含 γ-生育酚的乳剂评估了它们的 VE 状态、编码参与脂质和脂溶性维生素肠道吸收的蛋白质的基因表达以及 VE 吸收。HF 小鼠的体重 (+23.0%) 和肥胖指数 (AI,+157.0) 优于 CTL 小鼠 (p < 0.05)。与 CTL 小鼠相比,HF 小鼠血浆 (+45.0%) 和肝脏 (+116.9%) 中的 α-生育酚浓度较高 (p < 0.05)。经 AI 校正后,HF 小鼠脂肪组织中的 α-生育酚浓度高于 CTL 小鼠(+72.4%,p < 0.05)。在空腹小鼠中,编码参与肠道脂质代谢的蛋白质的基因表达没有差异。强制喂食后,与 CTL 小鼠相比,HF 小鼠的 γ-生育酚血浆浓度更高(+181.5% 在强制喂食后 1.5 小时,p < 0.05)。结论HF 小鼠比 CTL 小鼠表现出更高的状态和更有效的 VE 吸收。因此,VE 吸收在肥胖的早期阶段可能不会受损。
更新日期:2024-11-16
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