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Current trends of blood lead levels, distribution patterns and exposure variations among household members in Kabwe, Zambia

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Title: Current trends of blood lead levels, distribution patterns and exposure variations among household members in Kabwe, Zambia
Authors: Yabe, John Browse this author
Nakayama, Shouta M. M. Browse this author →KAKEN DB
Nakata, Hokuto Browse this author
Toyomaki, Haruya Browse this author
Yohannes, Yared B. Browse this author
Muzandu, Kaampwe Browse this author
Kataba, Andrew Browse this author
Zyambo, Golden Browse this author
Hiwatari, Masato Browse this author →KAKEN DB
Narita, Daiju Browse this author
Yamada, Daichi Browse this author
Hangoma, Peter Browse this author
Munyinda, Nosiku Sipilanyambe Browse this author
Mufune, Tiza Browse this author
Ikenaka, Yoshinori Browse this author →KAKEN DB
Choongo, Kennedy Browse this author
Ishizuka, Mayumi Browse this author →KAKEN DB
Keywords: Childhood lead poisoning
LeadCare II analyser
Pb exposure differences
Issue Date: 1-Mar-2020
Publisher: Elsevier
Journal Title: Chemosphere
Volume: 243
Start Page: UNSP 125412
Publisher DOI: 10.1016/j.chemosphere.2019.125412
Abstract: Childhood lead (Pb) poisoning has devastating effects on neurodevelopment and causes overt clinical signs including convulsions and coma. Health effects including hypertension and various reproductive problems have been reported in adults. Historical Pb mining in Zambia's Kabwe town left a legacy of environmental pollution and childhood Pb poisoning. The current study aimed at establishing the extent of Pb poisoning and exposure differences among family members in Kabwe as well as determining populations at risk and identify children eligible for chelation therapy. Blood samples were collected in July and August 2017 from 1190 household members and Pb was measured using a portable LeadCare-II analyser. Participants included 291 younger children (3-months to 3-years-old), 271 older children (4-9-years-old), 412 mothers and 216 fathers from 13 townships with diverse levels of Pb contamination. The Blood Lead Levels (BLL) ranged from 1.65 to 162 mu g/dL, with residents from Kasanda (mean 45.7 mu g/dL) recording the highest BLL while Hamududu residents recorded the lowest (mean 3.3 mu g/dL). Of the total number of children sampled (n = 562), 23% exceeded the 45 mu g/dL, the threshold required for chelation therapy. A few children (5) exceeded the 100 mu g/dL whereas none of the parents exceeded the 100 mu g/dL value. Children had higher BLL than parents, with peak BLL-recorded at the age of 2-years-old. Lead exposure differences in Kabwe were attributed to distance and direction from the mine, with younger children at highest risk. Exposure levels in parents were equally alarming. For prompt diagnosis and treatment, a portable point-of-care devise such as a LeadCare-II would be preferable in Kabwe. (C) 2019 Elsevier Ltd. All rights reserved.
Rights: ©2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Type: article (author version)
Appears in Collections:獣医学院・獣医学研究院 (Graduate School of Veterinary Medicine / Faculty of Veterinary Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 石塚 真由美

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