Effects of arsenic exposure on trace element levels in the hippocampus and cortex of rats and their gender differences.

Exposure to arsenic (As) is a major public health challenge worldwide. Chronic exposure to As can cause various human health effects, including skin diseases, cardiovascular disease, neurological disorders, and cancer. Studies have shown that As exposure can lead to disturbances in the balance of trace elements in the body. Moreover, As readily crosses the blood-brain barrier and can be enriched in the hippocampus and cortex, causing neurotoxic damage. At present, there are few reports on the effect of As on trace element levels in the central nervous system (CNS). Therefore, we sought to explore As-induced neurotoxicity and the effects of As on CNS trace element levels.An As-induced neurological injury model in rats was established by feeding As chow for 90 days of continuous exposure, and 19 elements were detected in the hippocampus and cortex of As-exposed rats by inductively coupled plasma mass spectrometry.The results showed that the As levels in the hippocampus and cortex of As-exposed rats were significantly higher than those in the control group, The As levels in the cortex were significantly higher than in the hippocampus group. The levels of Cd, Ho, and Rb were increased in the hippocampus and decreased in Au, Ba, Ce, Cs, Pd, Se, Sr, and Tl in the As-exposed group, while the levels of Cd and Rb were increased and Se and Au were decreased in the cortex. Significant gender differences in the effects of As on hippocampal Cd, Ba, Rb, and Sr, and cortical Cd and Mo.It is suggested that elemental imbalance may be a risk factor for developing As toxicity plays a synergistic or antagonistic role in As-induced toxicity and is closely related to As-induced CNS damage.Copyright © 2023 Elsevier GmbH. All rights reserved.

Citation

Xi Yan, Jun Zhang, Junyu Li, Xinglai Zhang, Yi Wang, Xiaolu Chen, Peng Luo, Ting Hu, Xueshan Cao, Hongbin Zhuang, Xiaoxiao Tang, Fang Yao, Zhijun He, Guanwei Ma, Xiaoqian Ran, Liming Shen. Effects of arsenic exposure on trace element levels in the hippocampus and cortex of rats and their gender differences. Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS). 2023 Aug 23;80:127289127289

PMID: 37660573

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