Macrophages and iron metabolism

MP Soares, I Hamza - Immunity, 2016 - cell.com
Iron is a transition metal that due to its inherent ability to exchange electrons with a variety of
molecules is essential to support life. In mammals, iron exists mostly in the form of heme …

Are reactive oxygen species always detrimental to pathogens?

CN Paiva, MT Bozza - Antioxidants & redox signaling, 2014 - liebertpub.com
Reactive oxygen species (ROS) are deadly weapons used by phagocytes and other cell
types, such as lung epithelial cells, against pathogens. ROS can kill pathogens directly by …

[HTML][HTML] The macrophage heme-heme oxygenase-1 system and its role in inflammation

V Vijayan, FA Wagener, S Immenschuh - Biochemical pharmacology, 2018 - Elsevier
Abstract Heme oxygenase (HO)-1, the inducible isoform of the heme-degrading enzyme HO,
plays a critical role in inflammation and iron homeostasis. Regulatory functions of HO-1 are …

Hemolysis-induced lethality involves inflammasome activation by heme

FF Dutra, LS Alves, D Rodrigues… - Proceedings of the …, 2014 - National Acad Sciences
The increase of extracellular heme is a hallmark of hemolysis or extensive cell damage.
Heme has prooxidant, cytotoxic, and inflammatory effects, playing a central role in the …

Heme on innate immunity and inflammation

FF Dutra, MT Bozza - Frontiers in pharmacology, 2014 - frontiersin.org
Heme is an essential molecule expressed ubiquitously all through our tissues. Heme plays
major functions in cellular physiology and metabolism as the prosthetic group of diverse …

Hemopexin therapy reverts heme-induced proinflammatory phenotypic switching of macrophages in a mouse model of sickle cell disease

F Vinchi, M Costa da Silva, G Ingoglia… - Blood, The Journal …, 2016 - ashpublications.org
Hemolytic diseases, such as sickle cell anemia and thalassemia, are characterized by
enhanced release of hemoglobin and heme into the circulation, heme-iron loading of …

Mechanisms of haemolysis-induced kidney injury

K Van Avondt, E Nur, S Zeerleder - Nature Reviews Nephrology, 2019 - nature.com
Intravascular haemolysis is a fundamental feature of chronic hereditary and acquired
haemolytic anaemias, including those associated with haemoglobinopathies, complement …

Pro-inflammatory actions of heme and other hemoglobin-derived DAMPs

MT Bozza, V Jeney - Frontiers in Immunology, 2020 - frontiersin.org
Damage associated molecular patterns (DAMPs) are endogenous molecules originate from
damaged cells and tissues with the ability to trigger and/or modify innate immune responses …

“Pumping iron”—how macrophages handle iron at the systemic, microenvironmental, and cellular levels

M Nairz, I Theurl, FK Swirski, G Weiss - Pflügers Archiv-European Journal …, 2017 - Springer
Macrophages reside in virtually every organ. First arising during embryogenesis,
macrophages replenish themselves in the adult through a combination of self-renewal and …

Trained innate immunity, long-lasting epigenetic modulation, and skewed myelopoiesis by heme

E Jentho, C Ruiz-Moreno… - Proceedings of the …, 2021 - National Acad Sciences
Trained immunity defines long-lasting adaptations of innate immunity based on
transcriptional and epigenetic modifications of myeloid cells and their bone marrow …