The Role of Nitric Oxide in Enhancing Erythropoiesis in Sickle Cell Disease

Emmanuel Ifeanyi Obeagu

doi:10.22270/ijmspr.v11i3.151

Authors

Emmanuel Ifeanyi Obeagu Department of Biomedical and Laboratory Science, Africa University, Zimbabwe. https://orcid.org/0000-0002-4538-0161

DOI:

https://doi.org/10.22270/ijmspr.v11i3.151

Keywords:

Nitric oxide, erythropoiesis, sickle cell disease, hemoglobinopathies, vascular health

Abstract

Sickle cell disease (SCD) is a hereditary blood disorder characterized by the production of abnormal hemoglobin, leading to the sickling of red blood cells, vaso-occlusion, hemolysis, and chronic organ damage. One of the key challenges in SCD is impaired erythropoiesis, which results from the continuous destruction of sickled red blood cells and a compensatory increase in red blood cell production. Nitric oxide (NO), a critical endothelial signaling molecule, has been identified as a key regulator of erythropoiesis. NO influences the differentiation, proliferation, and survival of erythroid progenitor cells, thereby playing a vital role in maintaining healthy red blood cell production. In SCD, NO bioavailability is often reduced due to the hemolysis of red blood cells, which releases cell-free hemoglobin that scavenges NO. This depletion of NO further exacerbates the anemia and contributes to vascular dysfunction in SCD patients. Restoring NO availability may therefore be crucial for improving erythropoiesis and reducing the anemia that is characteristic of SCD. Research has shown that NO can enhance the expression of transcription factors involved in erythropoiesis and increase the production of fetal hemoglobin (HbF), which has a protective effect against sickling.

Keywords: Nitric oxide, erythropoiesis, sickle cell disease, hemoglobinopathies, vascular health

Author Biography

Emmanuel Ifeanyi Obeagu , Department of Biomedical and Laboratory Science, Africa University, Zimbabwe.

Department of Biomedical and Laboratory Science, Africa University, Zimbabwe.

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