Programa de Pós-Graduação em Ciências Ambientais e Conservação, Universidade Federal do Rio de Janeiro (UFRJ), Macaé 27965-045, Brazil.
Departamento de Medicina Preventiva, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo 01246-903, Brazil.
Int J Environ Res Public Health. 2023 Mar 22;20(6):5225. doi: 10.3390/ijerph20065225.
Environmental contamination by mercury (Hg) is a problem of global scale that affects human health. This study's aim was to evaluate Hg exposure among women of reproductive age residing in the Madeira River basin, in the State of Rondônia, Brazilian Amazon. This longitudinal cohort study used linear regression models to assess the effects on Hg levels of breastfeeding duration at 6 months, and of breastfeeding duration and number of new children at 2-year and 5-year. Breastfeeding duration was significantly associated with maternal Hg levels in all regression models (6 months, 2 years and 5 years) and no significant association was observed between the number of children and the change in maternal Hg levels in the 2-year and 5-year models. This longitudinal cohort study evaluated Hg levels and contributing factors among pregnant women from different communities (riverine, rural, mining and urban) in Rondônia, Amazon Region, for 5 years. A well-coordinated and designed national biomonitoring program is urgently needed to better understand the current situation of Hg levels in Brazil and the Amazon.
汞（Hg）污染是一个全球性的问题，影响着人类健康。本研究旨在评估居住在巴西亚马逊州朗多尼亚州马德拉河流域的育龄妇女的汞暴露情况。这项纵向队列研究使用线性回归模型来评估 6 个月时的母乳喂养持续时间以及 2 年和 5 年时的母乳喂养持续时间和新生儿数量对 Hg 水平的影响。在所有回归模型（6 个月、2 年和 5 年）中，母乳喂养持续时间与母体 Hg 水平显著相关，而在 2 年和 5 年模型中，儿童数量与母体 Hg 水平变化之间未观察到显著关联。这项纵向队列研究评估了朗多尼亚州亚马逊地区来自不同社区（河流、农村、矿业和城市）的孕妇在 5 年内的 Hg 水平和影响因素。迫切需要协调和精心设计的国家生物监测计划，以更好地了解巴西和亚马逊地区目前的 Hg 水平情况。
