红细胞生成
网织红细胞增多症
海西定
炎症
免疫学
转铁蛋白饱和度
贫血
铁蛋白
免疫失调
淋巴细胞减少症
转铁蛋白受体
医学
免疫系统
缺铁
生理学
内科学
转铁蛋白
淋巴细胞
作者
Aimee L. Hanson,Matthew P. Mulè,Hélène Ruffieux,Federica Mescia,Laura Bergamaschi,Victoria S. Pelly,Lorinda Turner,Prasanti Kotagiri,Berthold Göttgens,Christoph Hess,Nicholas Gleadall,John R. Bradley,James A. Nathan,Paul Lyons,Hal Drakesmith,Kenneth G. C. Smith
标识
DOI:10.1038/s41590-024-01754-8
摘要
Persistent symptoms following SARS-CoV-2 infection are increasingly reported, although the drivers of post-acute sequelae (PASC) of COVID-19 are unclear. Here we assessed 214 individuals infected with SARS-CoV-2, with varying disease severity, for one year from COVID-19 symptom onset to determine the early correlates of PASC. A multivariate signature detected beyond two weeks of disease, encompassing unresolving inflammation, anemia, low serum iron, altered iron-homeostasis gene expression and emerging stress erythropoiesis; differentiated those who reported PASC months later, irrespective of COVID-19 severity. A whole-blood heme-metabolism signature, enriched in hospitalized patients at month 1-3 post onset, coincided with pronounced iron-deficient reticulocytosis. Lymphopenia and low numbers of dendritic cells persisted in those with PASC, and single-cell analysis reported iron maldistribution, suggesting monocyte iron loading and increased iron demand in proliferating lymphocytes. Thus, defects in iron homeostasis, dysregulated erythropoiesis and immune dysfunction due to COVID-19 possibly contribute to inefficient oxygen transport, inflammatory disequilibrium and persisting symptomatology, and may be therapeutically tractable.
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