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Fe isotopic signature in a sub-Saharan African population


The Fe isotopic composition of an individual’s whole blood showed to be an interesting clinical indicator of Fe status. The present study aimed to evaluate the influence of several endemic characteristics of a representative population of the South Kivu province, an Fe-rich volcanic African region, on the whole blood Fe isotopic composition. Both diabetes mellitus and the ferroportin Q248H mutation are very common in Africa and are strongly associated with impairments in Fe metabolism. Fe isotopic analysis of whole blood samples was carried out using multi-collector inductively coupled plasma-mass spectrometry (after chromatographic target element isolation). Forty-two male subjects (between 48 and 59 years old) living in Bukavu (South Kivu) were enrolled in this study. Among the selected population, wild-type subjects and subjects presenting the ferroportin Q248H mutation (heterozygotes and homozygotes) were included. Within each group, diabetic and non-diabetic patients were considered. The whole blood δ56Fe value ranged from -3.09‰ to -2.41‰. The δ56Fe value showed significant negative correlation with the ferritin concentration. No correlation could be established between the whole blood δ56Fe value and the transferrin concentration, transferrin saturation or Fe concentration. The ferroportin Q248H mutation did not seem to have affected the whole blood Fe isotopic signature. The whole blood δ56Fe values were significantly higher in diabetic subjects than in non-diabetic subjects and showed a significant negative correlation with body mass index (BMI) values.

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Publication details

The article was received on 30 May 2017, accepted on 13 Jul 2017 and first published on 13 Jul 2017

Article type: Paper
DOI: 10.1039/C7MT00170C
Citation: Metallomics, 2017, Accepted Manuscript
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    Fe isotopic signature in a sub-Saharan African population

    J. C. Cikomola, M. R. Flórez, Y. Anoshkina, K. Vandepoele, P. B. Katchunga, A. S. Kishabongo, M. Speeckaert, M. Costas Rodriguez, F. Vanhaecke and J. Delanghe, Metallomics, 2017, Accepted Manuscript , DOI: 10.1039/C7MT00170C

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