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与锌摄入量及铁状态相比的锌状态:来自伊斯法罕省伊朗人群的案例研究

Zinc status as compared to zinc intake and iron status: a case study of Iranian populations from Isfahan province.

作者信息

Abbaspour Nazanin, Wegmueller Rita, Kelishadi Roya, Schulin Rainer, Hurrell Richard F

机构信息

ETH Zurich, Institute of Terrestrial Ecosystem, Zurich, Switzerland.

ETH Zurich, Institute of Food, Nutrition and Health, Zurich, Switzerland.

出版信息

Int J Vitam Nutr Res. 2013;83(6):335-45. doi: 10.1024/0300-9831/a000175.

Abstract

The aim of this study was to estimate the zinc (Zn) and iron (Fe) status of different age groups in rural (Rooran) and suburban (Khomeini Shahr) populations in central Iran, to relate the Zn status to Zn intake from animal and plant foods, and to examine the relationship between Zn and Fe status. Blood samples from 341 subjects including preschool children (27), schoolchildren (157), women (91), and men (66) were analyzed for serum zinc (SZn), serum ferritin (SF), total C-reactive protein, and hemoglobin. Daily Zn and phytic acid (PA) intakes from major food groups were estimated using a 3-day weighed food record. The overall prevalence of Zn deficiency based on low SZn was 5.9 % in Rooran and 7.2 % in Khomeini Shahr. Anemia was higher in the village than in the suburb (33.5 % vs. 22.7 %; p = 0.04) and almost half of the anemia in Khomeini Shahr and 36 % in Rooran was associated with iron deficiency (ID) based on low SF. The PA:Zn molar ratio in the diet was 10 - 13, indicating a diet of moderate Zn bioavailability. About 18 % of the population consumed less Zn than their WHO Estimated Average Requirements. There was no association between Zn status and Fe status. The modest prevalence of Zn deficiency in the study populations can be explained by a relatively high Zn intake from animal source foods. Anemia however is a serious public health problem affecting some 30 % of the subjects, with almost half due to ID. The lower Fe status than Zn status could be due to the frequent consumption of tea and dairy products.

摘要

本研究旨在评估伊朗中部农村(鲁兰)和郊区(霍梅尼沙赫尔)不同年龄组人群的锌(Zn)和铁(Fe)状况,将锌状况与动植物性食物的锌摄入量相关联,并研究锌和铁状况之间的关系。对包括学龄前儿童(27名)、学童(157名)、女性(91名)和男性(66名)在内的341名受试者的血液样本进行了血清锌(SZn)、血清铁蛋白(SF)、总C反应蛋白和血红蛋白分析。使用3天称重食物记录法估算了主要食物组的每日锌和植酸(PA)摄入量。基于低血清锌水平的锌缺乏总体患病率在鲁兰为5.9%,在霍梅尼沙赫尔为7.2%。农村地区的贫血患病率高于郊区(33.5%对22.7%;p = 0.04),基于低血清铁蛋白水平,霍梅尼沙赫尔近一半的贫血病例和鲁兰36%的贫血病例与缺铁(ID)有关。饮食中植酸与锌的摩尔比为10 - 13,表明饮食中锌的生物利用率适中。约18%的人群锌摄入量低于世界卫生组织估计的平均需求量。锌状况与铁状况之间没有关联。研究人群中锌缺乏患病率较低可能是由于动物性食物来源的锌摄入量相对较高。然而,贫血是一个严重的公共卫生问题,影响了约30%的受试者,其中近一半是由于缺铁。铁状况低于锌状况可能是由于经常饮用茶和食用乳制品。

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