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[Aldolase]
Rinsho Byori. the Japanese Journal of Clinical Pathology
|January 19, 2002
Summary
Aldolase, crucial for glucose metabolism, is elevated in various conditions including muscular diseases, myocardial infarction, hepatitis, and tumors. Its isozymes A and B are specifically linked to different disease states, aiding in diagnosis.
Area of Science:
- Biochemistry and enzymology, focusing on glucose metabolism.
- Clinical chemistry and diagnostics, utilizing enzyme markers.
Context:
- Aldolase (EC 4.1.2.13) is a key enzyme in glycolysis, essential for cellular energy production.
- The enzyme exists in three isozymes (A, B, and C) with distinct tissue distributions and roles.
- Elevated serum aldolase levels are indicative of cellular damage or disease.
Purpose:
- To elucidate the diagnostic significance of serum aldolase levels and its isozymes in various pathological conditions.
- To highlight the role of aldolase as a biomarker in muscular diseases, cardiac events, liver disorders, and malignancies.
Summary:
- Aldolase, with a molecular weight of 160 kDa, is present in most cells, particularly abundant in muscles, liver, and brain.
- Increased serum aldolase is observed in myotonic muscular diseases (e.g., progressive muscular dystrophy, polymyositis), with aldolase A elevation.
- Myocardial infarction shows transient aldolase elevation. Acute hepatitis is associated with very high aldolase B activity, while other liver conditions show milder increases.
- Malignant tumors and hemolytic anemia also present with elevated serum aldolase, often with a predominance of isozyme A in cancer.
Impact:
- Serum aldolase levels and isozyme profiling can serve as valuable diagnostic and prognostic indicators across a spectrum of diseases.
- Understanding aldolase's role in disease provides insights into metabolic dysregulation and cellular damage mechanisms.
- This enzyme's activity serves as a potential biomarker for early disease detection and monitoring treatment efficacy.