Geophagy and potential health implications: geohelminths, microbes and heavy metals
Geophagy and potential health implications: geohelminths, microbes and heavy metals
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DOI：
10.1016/j.trstmh.2010.09.002
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发表时间：
2010-12-01
影响因子：
2.2
通讯作者：
Prinz, Armin
中科院分区：
文献类型：
--
作者：
Kutalek, Ruth;Wewalka, Guenther;Prinz, Armin
在撒哈拉以南非洲，孕妇和哺乳期妇女中普遍存在食土习俗。为了评估一些潜在的风险伴随着食土材料的消费，我们分析了细菌，真菌和土壤蠕虫以及重金属（铅，汞和镉）的88个非洲食土土壤样本，这是购买在中部，西部和东部非洲，欧洲和美国的污染。阳性样本的中位微生物活菌计数为440 cfu/g（最大值为120 000 cfu/g）。中位金属浓度为铅40毫克/千克（最高148毫克/千克）、汞0.05毫克/千克（最高0.64毫克/千克）和镉0.055毫克/千克（最高0.57毫克/千克）。在这些样品中没有发现土源蠕虫卵。我们的研究结果表明，食土土壤样本可能受到微生物的高度污染，并可能含有高水平的铅。然而，食土癖并不是成人第九地狱感染的原因。定期食用高剂量的食土物质可能会产生问题，特别是在怀孕期间。(C)2010年皇家热带医学和卫生学会。由Elsevier Ltd.出版。保留所有权利。
The practice of geophagy (soil-eating) is widespread among pregnant and breast-feeding women in sub-Saharan Africa. To assess some of the potential risks accompanying the consumption of geophagic material, we analysed contamination with bacteria, fungi, and geohelminths as well as heavy metals (lead, mercury and cadmium) in 88 African geophagic soil samples, which were purchased in Central, West and East Africa, Europe and the United States. Median microbial viable counts of positive samples were 440 cfu/g (maximum 120 000 cfu/g). The median metal concentrations were 40 mg/kg lead (up to 148 mg/kg), 0.05 mg/kg mercury (up to 0.64 mg/kg), and 0.055 mg/kg cadmium (maximum 0.57 mg/kg). No geohelminth eggs were found in these samples. Our results suggest that geophagic soil samples can be highly contaminated with microbes and may contain high levels of lead. Geophagy, however, is not a cause of adult hell-ninth infection. The periodic consumption of geophagic materials at high dosages might be problematic particularly during pregnancy. (C) 2010 Royal Society of Tropical Medicine and Hygiene. Published by Elsevier Ltd. All rights reserved.