Role of uric acid and purine metabolism
Purine metabolism plays a critical role in the body. Disturbances in its catabolism can lead to severe conditions. Normally, purine nucleosides are converted into end products, including uric acid. Genetic deficiency of certain enzymes, such as adenosine deaminase or purine nucleoside phosphorylase, disrupts this process. As a result, excess ribo- and deoxyribonucleotides accumulate in cells, which is particularly dangerous for rapidly dividing cells.
Biochemical blood test
Blood testing includes a wide range of parameters for a comprehensive assessment of the patient's condition:
- Renal function and purine metabolism: uric acid, creatinine, urea.
- Carbohydrate metabolism: glucose.
- Protein metabolism: total protein and albumin.
- Liver function: total bilirubin, AST, ALT.
- Lipid profile: total cholesterol, LDL, HDL, and triglycerides.
- Electrolytes: potassium, sodium, calcium.
- Enzymes: LDH and alkaline phosphatase.
Clinical significance of investigations
Assessment of uric acid levels and other biochemical parameters is essential in medical practice. Complete blood counts and biochemical panels allow monitoring of kidney and liver function, identifying risk factors for atherosclerosis, and clarifying the activity of the pathological process. Blood testing is a mandatory step before initiating antineoplastic therapy to adjust treatment and evaluate the body's functional reserves.
Purines break down into acid, while the kidneys filter urea and creatinine—a trio of major renal-purine markers.
Class and exam questions
Which parameters are evaluated to check renal function and purine metabolism?
To assess renal function and purine metabolism, the levels of creatinine, urea, and uric acid are examined.
In which cases is a biochemical blood test including uric acid evaluation strictly required?
The test is ordered as part of general therapeutic screening, as well as mandatory pre-treatment evaluation before antineoplastic therapy.
Which biochemical markers of the liver are investigated alongside the purine profile?
Total bilirubin, aspartate aminotransferase (AST), and alanine aminotransferase (ALT) are examined.
What else to study on this topic
- Adenosine deaminase deficiency and its effect on T and B lymphocytes
- The role of ribonucleotide reductase and the mechanism of inhibition by dATP and dGTP
- Purine catabolism disorders and severe immunodeficiencies
- Features of the lipid profile in a biochemical blood test
- Criteria and goals of a complete blood count during screening
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