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[Genesis of microcytes in hemodialysis patients with chronic uremia]
Abstract:
The study is concerned with factors that may reduce the life time of erythrocytes of patients under intermittent haemodialysis. The red cell population of these patients consisted of micro-, normo-, macro- and megalocytes. The classification of the cell size was shiftet to greater diameters in comparison with healthy donors. The evaluation of the biological half time of erythrocytes labelled with 51Cr resulted in a decrease of about 16 days. The autoradiographic evaluation of the erythrocyte size-distribution patterns 1 and 24 hours after the injection of labelled red cells into the donors circulation clearly demonstrated a decrease of macro- and megalocytes. Simultaneously, the number of microcytes rose considerably. The measurement of erythrocyte deformability could demonstrate a clearcut relationship of flexibility for a) disturbed erythropoiesis resulting in the production of macro- and megalocytes, and b) fragmentation and premature elimination from the circulation due to unfavourable rheologic properties of erythrocytes of abnormal big and small sizes.
Insights
Intermittent hemodialysis shortens erythrocyte lifespan by promoting microcyte formation and premature red blood cell removal. This impacts patients undergoing dialysis, affecting red blood cell health.
Area of Science:
- Hematology
- Nephrology
- Red blood cell physiology
Context:
- Patients undergoing intermittent hemodialysis exhibit altered erythrocyte populations.
- Red blood cell size distribution shifts towards larger diameters compared to healthy individuals.
Purpose:
- To investigate factors affecting erythrocyte lifespan in patients on intermittent hemodialysis.
- To understand the relationship between erythrocyte size, deformability, and premature elimination.
Summary:
- Intermittent hemodialysis leads to a reduced erythrocyte lifespan (approx. 16 days).
- Autoradiography shows a decrease in macrocytes and megalocytes, with a significant increase in microcytes post-hemodialysis.
- Erythrocyte deformability is compromised in abnormal cell sizes, contributing to fragmentation and early removal.
Impact:
- Findings highlight compromised red blood cell health in hemodialysis patients.
- Understanding these mechanisms can inform strategies to improve erythrocyte survival and patient outcomes.
- This research contributes to the understanding of hematological complications in chronic kidney disease patients.