Related Experiment Videos
Muramic acid in human peripheral blood leucocytes in different age groups
L Lehtonen1, E Eerola, P Toivanen
1Turku Immunology Centre, Department of Medical Microbiology, Turku University, Finland.
European Journal of Clinical Investigation
|November 14, 1997
Summary
Muramic acid, a bacterial cell wall marker, was detected in peripheral blood leukocytes of younger individuals but decreased with age. No clear disease correlation was found.
Area of Science:
- Biochemistry
- Immunology
- Microbiology
Background:
- Muramic acid is a key component of bacterial peptidoglycan.
- Bacterial components can potentially translocate into circulation.
- Age-related changes in immune function are well-documented.
Purpose of the Study:
- To investigate the presence and age-related prevalence of muramic acid in human peripheral blood leukocytes.
- To explore potential correlations between muramic acid presence and specific diseases.
Main Methods:
- Gas chromatography and mass spectrometry were used for muramic acid analysis.
- Peripheral blood leukocytes from individuals aged 9-80 years were analyzed.
- Subjects included healthy individuals and patients with rheumatoid arthritis, osteoarthrosis, essential hypertension, and multiple sclerosis.
Main Results:
- Muramic acid was detected in 60% of samples from the youngest subjects.
- The prevalence of detectable muramic acid in leukocytes decreased with age.
- Less than 5% of individuals over 40 years old showed detectable muramic acid.
- No significant correlation was observed between muramic acid presence and the studied diseases.
Conclusions:
- Circulating muramic acid in leukocytes is more prevalent in younger individuals.
- Its presence diminishes significantly with age.
- The study did not find a link between muramic acid in leukocytes and the investigated diseases.