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α-生育三烯酚醇在小鼠体内是可吸收的,其部分可能受肝脏α-生育酚转移蛋白功能的调节。

α-Tocomonoenol Is Bioavailable in Mice and May Partly Be Regulated by the Function of the Hepatic α‑Tocopherol Transfer Protein.

机构信息

Department of Food Biofunctionality, Institute of Nutritional Sciences, University of Hohenheim, Garbenstr. 28, D-70599 Stuttgart, Germany.

Institute of Food Chemistry, University of Hohenheim, D-70599 Stuttgart, Germany.

出版信息

Molecules. 2020 Oct 19;25(20):4803. doi: 10.3390/molecules25204803.

DOI:10.3390/molecules25204803
PMID:33086686
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7588010/
Abstract

Tocomonoenols are vitamin E derivatives present in foods with a single double bond at carbon 11' in the sidechain. The α-tocopherol transfer protein (TTP) is required for the maintenance of normal α-tocopherol (αT) concentrations. Its role in the tissue distribution of α-11'-tocomonoenol (αT) is unknown. We investigated the tissue distribution of αT and αT in wild-type (TTP) and TTP knockout (TTP) mice fed diets with either αT or αT for two weeks. αT was only found in blood, not tissues. αT concentrations in TTP mice were in the order of adipose tissue > brain > heart > spleen > lungs > kidneys > small intestine > liver. Loss of TTP function depleted αT in all tissues. αT, contrary to αT, was still present in the blood of TTP mice (16% of αT in TTP). Autoclaving and storage at room temperature reduced αT and αT in experimental diets. In conclusion, αT is bioavailable, reaches the blood in mice, and may not entirely depend on TTP function for secretion into the systemic circulation. However, due to instability of the test compounds in the experimental diets, further in vivo experiments are required to clarify the role of TTP in αT secretion. Future research should consider compound stability during autoclaving of rodent feed.

摘要

生育酚单烯醇是维生素 E 的衍生物,存在于食物中,其侧链在 11' 碳处有一个双键。α-生育酚转移蛋白 (TTP) 是维持正常α-生育酚 (αT) 浓度所必需的。其在组织中α-11'-生育酚单烯醇(αT)分布中的作用尚不清楚。我们研究了野生型(TTP)和 TTP 敲除(TTP)小鼠在喂食含有αT 或αT 的饮食两周后的αT 和αT 在组织中的分布。αT 仅存在于血液中,不存在于组织中。TTP 小鼠中αT 的浓度顺序为脂肪组织>大脑>心脏>脾脏>肺>肾脏>小肠>肝脏。TTP 功能丧失导致所有组织中αT 的消耗。与αT 相反,αT 仍存在于 TTP 小鼠的血液中(TTP 中为 16%的αT)。高压灭菌和室温储存会降低实验饮食中的αT 和αT。总之,αT 是生物可利用的,可到达小鼠血液中,并且可能不完全依赖于 TTP 功能来分泌到体循环中。然而,由于实验饮食中测试化合物的不稳定性,需要进一步的体内实验来阐明 TTP 在αT 分泌中的作用。未来的研究应考虑在高压灭菌处理啮齿动物饲料时化合物的稳定性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aee1/7588010/98544272415a/molecules-25-04803-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aee1/7588010/c82e897bb647/molecules-25-04803-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aee1/7588010/7119f34b391a/molecules-25-04803-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aee1/7588010/d9c78b5b8d00/molecules-25-04803-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aee1/7588010/ca40928bb0af/molecules-25-04803-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aee1/7588010/98544272415a/molecules-25-04803-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aee1/7588010/c82e897bb647/molecules-25-04803-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aee1/7588010/7119f34b391a/molecules-25-04803-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aee1/7588010/d9c78b5b8d00/molecules-25-04803-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aee1/7588010/ca40928bb0af/molecules-25-04803-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aee1/7588010/98544272415a/molecules-25-04803-g005.jpg

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本文引用的文献

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Quantitative Analysis of the Accumulation of Marine-derived Tocopherol in the Tissue of Mice Fed with Salmon Roe Oil Using HPLC-fluorescence.使用高效液相色谱-荧光法对喂食鲑鱼籽油的小鼠组织中海洋来源生育酚积累情况的定量分析
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