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[Diagnosis of hemoglobinopathies]
1Department of Clinical Laboratory Science, Yamaguchi University School of Medicine, Ube.
Rinsho Byori. the Japanese Journal of Clinical Pathology
|June 17, 1998
Summary
DNA analysis has become the primary method for identifying variant hemoglobins and thalassemia mutations due to its versatility and efficiency. Protein chemistry is now limited to specialized investigations of hemoglobinopathies.
Area of Science:
- Biochemistry
- Genetics
- Molecular Biology
Context:
- Traditional protein chemistry methods for hemoglobin identification have been largely superseded by DNA-based diagnostics.
- Advancements in automation have improved conventional chemistry, but DNA analysis offers greater versatility for hemoglobin and thalassemia mutations.
Purpose:
- To summarize the shift from chemical to DNA-based methods for diagnosing hemoglobinopathies.
- To outline the laboratory's experience and current strategy for diagnosing hemoglobin disorders.
Summary:
- DNA analysis is more versatile, less labor-intensive, and easier to learn than protein chemistry for diagnosing variant hemoglobins and thalassemia mutations.
- Protein chemistry remains relevant for specific issues like post-translational modifications, biosynthesis, stability, and the pathophysiology of abnormal hemoglobins.
- The introduction of DNA analysis in the mid-1980s led to a significant increase in sample referrals, particularly for diagnosing thalassemia traits in microcytic anemia.
Impact:
- Facilitated a rapid increase in laboratory sample referrals for hemoglobinopathy diagnosis.
- Enabled precise identification of mutations and presumptive diagnosis of hemoglobin disorders.
- Highlights the evolving landscape of diagnostic approaches in hematology.