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首页> 外文期刊>Public Health Nutrition >Erythrocyte cell membrane phospholipid levels compared against reported dietary intakes of polyunsaturated fatty acids in pregnant Mexican women
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Erythrocyte cell membrane phospholipid levels compared against reported dietary intakes of polyunsaturated fatty acids in pregnant Mexican women

机译：与墨西哥孕妇中饮食中多不饱和脂肪酸的摄入量相比，红细胞膜磷脂水平的比较

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Objective:To evaluate the validity of a food-frequency questionnaire (FFQ) for assessment of the dietary intakes of polyunsaturated fatty acids (PUFAs) against a biochemical marker of fat intake, erythrocyte cell membrane phospholipid levels, during pregnancy.Design:Cross-sectional analysis.Setting:Developmental Neurobiology Department, National Institute of Perinatology, Mexico City.Subjects:One hundred forty-six healthy pregnant women during the last trimester of pregnancy. Among women enrolled, the first 35 pregnant women (24%) had their erythrocytes analysed for fatty acid status.Methods:We administered an FFQ and compared intakes of PUFAs against their erythrocyte cell membrane concentrations, processed by gas chromatography.Results:Pearson correlation coefficients among ?±-linolenic acid (ALN), docosahexaenoic acid (DHA) and eicosapentaenoic acid in erythrocyte cell membranes against their crude dietary counterparts were 0.32, 0.35 and 0.36 (each P < 0.05). In a simple linear regression, erythrocyte DHA and arachidonic acid (AA) were significantly related to their respective dietary intakes (?2 = 0.30, 95% confidence interval (CI): 0.007a€“0.60, P = 0.045 for DHA; ?2 = 0.49, 95% CI: 0.010a€“0.98, P = 0.044 for AA). Erythrocyte cell membrane ALN concentration (%/total) was only marginally related to ALN dietary intake (mg daya?’1) (?2 = 0.52, 95% CI: a?’0.020a€“1.10, P = 0.061). However, after adjustment for long-chain na€“3 PUFA/AA, this association reached significance (?2 = 0.44, 95% CI: 0.026a€“0.825, P = 0.038). Main dietary sources for na€“3 PUFAs were canned tuna fish and fresh catfish; for na€“6 these were eggs and cow's milk. The use of this FFQ in these pregnant Mexican women provided estimates of average long-term intakes of PUFAs and correlated reasonably well with their erythrocyte cell membrane phospholipid status. However, we need to consider that, during pregnancy, there is a faster turnover of PUFAs from fat storage that may modify the profile of erythrocyte PUFAs and lower the correlation between dietary intake and erythrocyte PUFAs.
机译：目的：评估食物频率问卷（FFQ）评估饮食中饮食中多不饱和脂肪酸（PUFAs）的脂肪摄入的生化指标，红细胞膜磷脂水平的有效性。设计：横断面分析：地点：墨西哥城国家皮肤病学研究所发育神经生物学系。研究对象：妊娠最后三个月的146名健康孕妇。在入选的妇女中，前35名孕妇（24％）对他们的红细胞进行了脂肪酸状态分析。方法：我们进行了FFQ，并通过气相色谱法比较了PUFA的摄入量与他们的红细胞膜浓度的比较。结果：皮尔逊相关系数红细胞膜中的α±亚麻酸（ALN），二十二碳六烯酸（DHA）和二十碳五烯酸的日粮相对于粗粮的分别为0.32、0.35和0.36（均P <0.05）。在简单的线性回归中，红细胞DHA和花生四烯酸（AA）与它们各自的饮食摄入量显着相关（？2 = 0.30，95％置信区间（CI）：0.007a？0.60，P = 0.045对于DHA;？2 ＝ 0.49，95％CI：0.010-0.98，对于AA，P ＝ 0.044）。红细胞膜ALN浓度（％/总）与ALN饮食摄入量（mg daya？1）仅略有相关（？2 = 0.52，95％CI：a？0.020a-1.10，P = 0.061）。然而，在对长链na-3 PUFA / AA进行调整后，这种关联达到了显着性（？2 = 0.44，95％CI：0.026a？0.825，P = 0.038）。仅有的三种PUFA的主要饮食来源是金枪鱼罐头和新鲜cat鱼。仅这六点就是鸡蛋和牛奶。在这些墨西哥孕妇中使用这种FFQ可以估算出PUFAs的平均长期摄入量，并且与他们的红细胞膜磷脂状态合理相关。但是，我们需要考虑的是，在怀孕期间，脂肪存储中PUFA的周转速度更快，这可能会改变红细胞PUFA的分布，并降低饮食摄入量与红细胞PUFA之间的相关性。

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