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Antibiotic-induced apoptosis in human activated peripheral lymphocytes
Jun-Ichi Kadota1, Syunji Mizunoe, Kenji Kishi
1Division of Pathogenesis and Disease Control, Department of Infectious Diseases, Oita University Faculty of Medicine, 1-1 Hasama, Oita 879-5593, Japan. kadota@med.oita-u.ac.jp
International Journal of Antimicrobial Agents
|March 2, 2005
Summary
Macrolide antibiotics, like clarithromycin and azithromycin, promote lymphocyte apoptosis, offering potential therapeutic benefits for chronic airway inflammatory diseases. This specific effect was not observed with other antibiotic classes.
Area of Science:
- Immunology
- Pharmacology
- Respiratory Medicine
Background:
- Chronic airway inflammatory diseases are often associated with lymphocyte accumulation.
- Macrolide antibiotics have demonstrated immunomodulatory effects in previous studies.
- Understanding the specific mechanisms of macrolide action is crucial for therapeutic development.
Purpose of the Study:
- To investigate the effect of macrolide antibiotics on lymphocyte apoptosis.
- To compare the apoptosis-inducing activity of macrolides with other antibiotic classes.
- To explore the therapeutic potential of macrolides in chronic airway diseases.
Main Methods:
- Isolation of activated lymphocytes from human peripheral blood.
- Treatment of lymphocytes with macrolides (clarithromycin, azithromycin) and other antibiotics (fosfomycin, beta-lactams, quinolone) at 100 microg/ml.
- Assessment of apoptosis induction in treated lymphocytes.
Main Results:
- Macrolides (clarithromycin, azithromycin) significantly accelerated apoptosis of activated lymphocytes.
- Other tested antibiotics (fosfomycin sodium, ceftazidime, piperacillin sodium, biapenem, ofloxacin) did not induce significant apoptosis.
- The apoptosis-augmenting effect appears specific to 14- or 15-membered ring macrolides.
Conclusions:
- Macrolides possess a specific ability to induce apoptosis in activated lymphocytes.
- This mechanism may contribute to the therapeutic efficacy of macrolides in chronic airway inflammatory conditions.
- Further research into macrolide-based therapies for these diseases is warranted.