5: Red Blood Cells- DNA Metabolism Abnormalities and Bone Marrow Failure — Read

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5.1: Megaloblastic Anemia
This page covers megaloblastic anemia, marked by defective DNA synthesis affecting blood cell production, often due to Vitamin B12 and folate deficiencies. It details key cellular characteristics such as nuclear-cytoplasmic asynchrony, hypersegmented neutrophils, and oval macrocytes.
5.2: Non-Megaloblastic Macrocytic Anemia
This page covers non-megaloblastic macrocytic anemia, detailing causes including alcoholism, liver disease, bone marrow failure, and myelodysplastic syndromes. It explains how alcohol affects erythrocyte development and links liver disease to altered red blood cell membranes. Laboratory findings show elevated MCV and round macrocytes, and specific iron studies related to liver disease are mentioned.
5.3: Aplastic Anemia
This page discusses bone marrow failure, highlighting its impact on hematopoiesis and resulting cytopenias. Aplastic anemia is identified as a key condition characterized by pancytopenia and hypocellular bone marrow without hepatosplenomegaly. Causes are varied, including idiopathic factors, drugs, radiation, and genetic disorders such as Fanconi Anemia. Laboratory analyses typically reveal decreased red and white blood cells and platelets, as well as abnormal iron studies.

This page titled 5: Red Blood Cells- DNA Metabolism Abnormalities and Bone Marrow Failure was last modified on Fri, 11 Sep 2026 16:39:54 GMT and is shared under a CC BY-NC 4.0 license and was authored, remixed, and/or curated by Valentin Villatoro and Michelle To (Open Education Alberta) via source content that was edited to the style and standards of the LibreTexts platform.

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