Trace elements dyshomeostasis in liver and brain of weanling mice under altered dietary selenium conditions

Sunil Kumar Sharma; Biraja Prasad Mohanty; Vishal Singh; Mohinder Pal Bansal; Nitin Kumar Singhal; Suresh Kumar Sharma; Rajat Sandhir

doi:10.1016/j.jtemb.2023.127305

Trace elements dyshomeostasis in liver and brain of weanling mice under altered dietary selenium conditions

J Trace Elem Med Biol. 2023 Dec:80:127305. doi: 10.1016/j.jtemb.2023.127305. Epub 2023 Sep 16.

Authors

Sunil Kumar Sharma¹, Biraja Prasad Mohanty², Vishal Singh³, Mohinder Pal Bansal², Nitin Kumar Singhal³, Suresh Kumar Sharma⁴, Rajat Sandhir⁵

Affiliations

¹ Department of Biochemistry, Panjab University, Chandigarh 160014, India.
² Department of Biophysics, Panjab University, Chandigarh 160014, India.
³ National Agri-Food Biotechnology Institute, Sector 81, S.A.S. Nagar 140306, India.
⁴ Department of Statistics, Panjab University, Chandigarh 160014, India.
⁵ Department of Biochemistry, Panjab University, Chandigarh 160014, India. Electronic address: sandhirr@pu.ac.in.

PMID: 37778095
DOI: 10.1016/j.jtemb.2023.127305

Abstract

Background: A balanced diet containing selenium (Se) and other trace elements is essential for normal development and growth. Se has been recognized as an essential trace element; however, its interaction with other elements has not been fully investigated. In the present study, sodium (Na), magnesium (Mg), potassium (K), calcium (Ca), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), copper (Cu), zinc (Zn), Se and rubidium (Rb), were analysed in liver and brain regions under altered dietary Se intake in weanling mice to identify major discriminatory elements.

Methods: The study investigated the effects of different levels of Se intake on the elemental composition in liver and brain tissues of weaned mice. After 24 weeks of feeding with Se adequate, deficient, and excess diets, elemental analysis was performed on the harvested tissues using Inductively coupled plasma mass spectrometry (ICP-MS). Statistical analysis that included analysis of covariance (ANCOVA), correlation coefficient analysis, principal component analysis, and partial least squares discriminant analysis were performed.

Results: The ANCOVA showed statistically significant changes and correlations among the analysed elements under altered dietary Se status. The multivariate analysis showed differential changes in elements in liver and brain regions. The results suggest that long-term dietary Se alternations lead to dyshomeostasis in trace elements that are required in higher concentrations compared to Se. It was observed that changes in the Fe, Co, and Rb levels were similar in all the tissues studied, whereas the changes in Mg, Cr, and Mn levels were different among the tissues under altered dietary Se status. Additionally, the changes in Rb levels correlated with the dietary Se intake but had no relation with the tissue Se levels.

Conclusions: The findings suggest interactions between Mg, Cr, Mn, Fe, Co, and Se under altered Se status may impact cellular functions during postnatal development. However, the possible biological significance of alterations in Rb levels under different dietary Se paradigms needs to be further explored.

Keywords: Brain; Iron; Multivariate analysis; Rubidium; Selenium; Trace elements.

MeSH terms

Animals
Brain
Chromium
Cobalt
Copper
Liver / chemistry
Magnesium
Manganese
Mice
Rubidium
Selenium*
Sodium
Trace Elements* / analysis

Substances

Trace Elements
Selenium
Magnesium
Manganese
Chromium
Copper
Cobalt
Rubidium
Sodium