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2014 ; 123
(21
): 3221-9
Nephropedia Template TP
gab.com Text
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English Wikipedia
Combinatorial effects of malaria season, iron deficiency, and inflammation
determine plasma hepcidin concentration in African children
#MMPMID24596418
Atkinson SH
; Armitage AE
; Khandwala S
; Mwangi TW
; Uyoga S
; Bejon PA
; Williams TN
; Prentice AM
; Drakesmith H
Blood
2014[May]; 123
(21
): 3221-9
PMID24596418
show ga
Hepcidin is the master regulatory hormone that governs iron homeostasis and has a
role in innate immunity. Although hepcidin has been studied extensively in model
systems, there is less information on hepcidin regulation in global health
contexts where iron deficiency (ID), anemia, and high infectious burdens
(including malaria) all coexist but fluctuate over time. We evaluated iron
status, hepcidin levels, and determinants of hepcidin in 2 populations of rural
children aged ?8 years, in the Gambia and Kenya (total n = 848), at the start and
end of a malaria season. Regression analyses and structural equation modeling
demonstrated, for both populations, similar combinatorial effects of upregulating
stimuli (iron stores and to a lesser extent inflammation) and downregulating
stimuli (erythropoietic drive) on hepcidin levels. However, malaria season was
also a significant factor and was associated with an altered balance of these
opposing factors. Consistent with these changes, hepcidin levels were reduced
whereas the prevalence of ID was increased at the end of the malaria season. More
prevalent ID and lower hepcidin likely reflect an enhanced requirement for iron
and an ability to efficiently absorb it at the end of the malaria season. These
results, therefore, have implications for ID and malaria control programs.