An apatite for kidney stones

Fouke, Bruce W.

doi:10.1038/s41561-022-01013-1

Nat. Geosci.

2022

DOI: 10.1038/s41561-022-01013-1

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An apatite for kidney stones

Bruce W. Fouke

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2024

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Natural variation of magnesium stable isotopes in human kidney stones

Liu,

Han,

Tian

et al. 2024

Metallomics

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Kidney stones, as typical biominerals produced within the human body, pose a significant threat to human health, affecting over 12% of the global population. However, the exact mechanisms underlying their formation are not fully understood. Recent metal isotopic analysis provides a new way to study the roles of metal cations in biological processes within organisms. Here we report the Mg isotope ratios of human kidney stones for the first time. The total range of measured values for δ26Mg in kidney stones is 1.05‰, from—1.12‰ to—0.07‰. Our data exhibit a significant 24Mg enrichment compared with the values calculated from density functional theory. We suggest that the Mg-isotopic fractionations in vivo are linked to active Mg transport mediated by proteins during intestinal absorption and preferential renal reabsorption of ionized Mg2+ via tight junctional proteins. Our results indicate that the inhibitory effect of Mg on kidney stones is related to the kink-blocking mechanism, and the incorporation of hydrated Mg lessens the extent of inhibition and the magnitude of isotope discrimination. We show that metal isotopes provide new insights into the underlying the biological processes and human health.

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Natural variation of magnesium stable isotopes in human kidney stones

Liu,

Han,

Tian

et al. 2024

Metallomics

View full text Add to dashboard Cite

show abstract

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An apatite for kidney stones

Cited by 1 publication

References 9 publications

Natural variation of magnesium stable isotopes in human kidney stones

Natural variation of magnesium stable isotopes in human kidney stones

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