Rare Earth Elements Accumulation in the Hair of Malagasy Children and Adolescents in Relation to Their Age and Nutritional Status

Abstract

Due to undesired influence, the accumulation of rare earth elements (REE) in the human body has been discussed recently. However, it is usually limited to the study of the population living where REE ores and mines are located. The aim of the experiment presented was to analyse the concentration of REE in the hair of children and teenagers living in two areas of Madagascar in relation to the place of residence, nutritional status, age and sex. REE concentration was determined in scalp hair of 262 of subjects (5–19 years old) by an inductively coupled plasma-optical emission spectrometer. The content of total REE in the Malagasy hair was in the range of 0.79–44.15 mg/kg. The nutritional status was evaluated by Cole’s index, and malnutrition of children was observed more often in village areas. The concentration of these elements was also determined in 20 samples for the estimation of environmental exposure. No significant differences were detected in the content of these elements in the studied regions, although the mean value was always higher in soil samples from the Antananariva region. The obtained data suggest dependence between REE concentration in the hair and age, and nutritional status of the examined subjects. Even if the observed correlations are weak, they contribute significant knowledge on the accumulation of REE in the bodies of children living in areas that are not recognised as deposits of these elements.

Chronic exposure to yttrium induced cell apoptosis in the testis by mediating Ca2+/IP3R1/CaMKII signaling

“…Yttrium oxide nanoparticles have been recently to shown to alleviate the reproductive toxicity induced by silver nanoparticle ( 5 ). However, it has been reported that the rare earth elements can be accumulated in the human body and produce detrimental effects in a dose-dependent manner ( 6 ). The rare earth elements can be accumulated in the liver, bone, and lungs ( 7 ).…”

Разработка Биологически Активной Наносистемы На Основе Рибофлавина, Микроэлемента Меди И Аминокислоты L-Лизина

“…Сегодня у нас есть доступ к огромному выбору продуктов в магазинах, аптеки предлагают широкий ассортимент витаминных комплексов, но все же существует проблема недостатка поступления важных макро-и микроэлементов в организм человека. Волосы, будучи биологическим субстратом, отражают состояние нашего организма, их химический состав содержит гораздо больше элементов, чем, например, кровь [1][2][3][4]. Исследования показывают, что содержание микроэлементов в волосах отражает общий статус этих элементов в организме [5].…”