Related Experiment Videos
Deoxyuridine suppression: biochemical basis and diagnostic applications
S N Wickramasinghe1, J H Matthews
1Department of Haematology, St Mary's Hospital Medical School, London, UK.
Blood Reviews
|September 1, 1988
Summary
The deoxyuridine (dU) suppression test accurately identifies megaloblastosis from vitamin B12 or folate deficiency. This sensitive test helps distinguish these deficiencies from other causes of macrocytosis.
Area of Science:
- Biochemistry
- Hematology
- Clinical Diagnostics
Background:
- Megaloblastic changes in vitamin B12 and folate deficiency are linked to deoxyuridine (dU) metabolism.
- The exact biochemical basis of dU suppression abnormalities remains under investigation, with impaired deoxyuridylate methylation being a primary hypothesis.
Purpose of the Study:
- To evaluate the deoxyuridine (dU) suppression test as a diagnostic tool for vitamin B12 and folate deficiency.
- To assess the specificity and clinical utility of the dU suppression test in identifying megaloblastosis.
Main Methods:
- The study discusses the deoxyuridine (dU) suppression test, a biochemical assay.
- Clinical data and laboratory findings related to dU suppression abnormalities are reviewed.
Main Results:
- Abnormal dU suppression is a sensitive indicator of megaloblastosis in vitamin B12 or folate deficiency.
- The dU suppression test shows higher specificity than serum vitamin B12 or red cell folate levels for detecting these deficiencies.
- The test is valuable in diagnosing obscure anemias and understanding drug-induced myelotoxicity.
Conclusions:
- The deoxyuridine (dU) suppression test is a reliable method for diagnosing vitamin B12 and folate deficiency, especially in cases of macrocytosis.
- It aids in differentiating deficiency-related megaloblastosis from other causes and is crucial for investigating complex anemias.