Anemia Mechanisms in Chronic Liver Disease
Summary
Anaemia in chronic liver disease arises from a constellation of interacting processes. Portal hypertension and resultant hypersplenism lead to increased sequestration and destruction of erythrocytes. Gastrointestinal blood loss, from variceal haemorrhage or portal hypertensive gastropathy, contributes to iron deficiency and microcytic anaemia. The failing liver secretes less erythropoietin, impairing erythrocyte production, while chronic inflammation promotes iron sequestration via hepcidin upregulation, yielding a normocytic, normochromic anaemia of chronic disease. Nutritional deficits in iron, folate and vitamin B12 further compromise erythropoiesis, especially in alcohol‐related liver injury. Distinct haemolytic variants include spur cell anaemia, driven by altered lipid composition of red cell membranes, and Zieve’s syndrome, characterised by non‐immune haemolysis with hyperlipidaemia. Bone marrow suppression may follow antiviral therapy or direct alcohol toxicity. Together, these mechanisms generate a spectrum of clinical presentations, demanding tailored diagnostic and therapeutic strategies that range from nutritional repletion and endoscopic control of bleeding to plasmapheresis for lipid disorders and, ultimately, liver transplantation.
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Anemia Mechanisms in Chronic Liver Disease publication trend
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Technical terms
Haemolytic anaemia: Anaemia resulting from premature destruction of red blood cells.
Spur cell anaemia: A form of haemolytic anaemia characterised by erythrocytes with spiky membrane projections due to lipid imbalance.
Hypersplenism: Overactive splenic function leading to excessive sequestration and destruction of blood cells.
Portal hypertension: Elevated pressure in the portal venous system causing variceal bleeding and splenomegaly.
Normocytic, normochromic anaemia: Anaemia with red blood cells of normal size and haemoglobin content, often seen in chronic disease.
Zieve’s syndrome: A triad of haemolytic anaemia, jaundice and hyperlipidaemia occurring in alcohol-induced liver injury.
References
- Spur cells in liver cirrhosis are predictive of acute-on-chronic liver failure and liver-related mortality regardless of severe anaemia. Internal and Emergency Medicine (2023).
- Diagnostic Approach and Pathophysiological Mechanisms of Anemia in Chronic Liver Disease—An Overview. Gastroenterology Insights (2023).
- Zieve’s Syndrome: An Underdiagnosed Cause of Non-immune Hemolytic Anemia. Cureus (2024).
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