Interrelationships among mediators of cellular zinc homeostasis in healthy and type 2 diabetes mellitus populations

Anna Chu, Meika Foster, Dale Hancock, Peter Petocz, Samir Samman*

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    9 Citations (Scopus)

    Abstract

    Scope: The involvement of zinc in multiple physiological systems requires tight control of cellular zinc concentration. This study aims to explore the relationships among selected mediators of cellular zinc homeostasis in an apparently healthy (AH) population and a cohort with type 2 diabetes mellitus (T2DM).

    Methods and results: Baseline data of three trials forming two cohorts, AH (n = 70) and T2DM (n = 42), were used for multivariate analyses to identify groupings within ten zinc transporter and metallothionein (MT) gene expressions, stratified by health status. Multiple regression models were used to explore relationships among zinc transporter/MT groupings and plasma zinc. Gene expression of zinc transporters and MTs, with the exception of ZnT6, were significantly lower in the T2DM cohort (p < 0.01). Cluster analysis showed that the groupings of zinc transporters and MTs were largely similar between the two cohorts, with the exception for ZnT1 and ZIP7. Zinc transporters and MTs were significant determinants of plasma zinc (r2 = 0.48, p = 0.001) in the AH cohort, but not in the T2DM cohort.

    Conclusion: The current study suggests altered cellular zinc homeostasis in T2DM and supports the use of multiple zinc transporters and MTs groupings to further understand zinc homeostasis in health and T2DM.

    Original languageEnglish
    Article number1600838
    Pages (from-to)1-9
    Number of pages9
    JournalMolecular Nutrition and Food Research
    Volume61
    Issue number4
    DOIs
    Publication statusPublished - 1 Apr 2017

    Keywords

    • Metallothionein
    • Transporter
    • Type 2 diabetes mellitus
    • Zinc

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