Tissue reparative effects of macrolide antibiotics in chronic inflammatory sinopulmonary diseases
Kevin W Garey1, Anita Alwani, Larry H Danziger
1Department of Clinical Sciences and Administration, University of Houston College of Pharmacy, Houston, TX, USA.
Abstract:
It is well established that macrolide antibiotics are efficacious in treating sinopulmonary infections in humans. However, a growing body of experimental and clinical evidence indicates that they also express distinct salutary effects that promote and sustain the reparative process in the chronically inflamed upper and lower respiratory tract. Unlike the anti-infective properties, these distinct effects are manifested at lower doses, usually after a relatively prolonged period (weeks) of treatment, and in the absence of an identifiable, viable pathogen. Long-term, low-dose administration of macrolide antibiotics has been used most commonly for sinusitis, diffuse panbronchiolitis, asthma, bronchiectasis, and cystic fibrosis. It is associated with down-regulation of nonspecific host inflammatory response to injury and promotion of tissue repair. Although large-scale trials are lacking, the prolonged use of these drugs has not been associated with emergence of clinically significant bacterial resistance or immunosuppression. Long-term, low-dose administration of 14- and 15-membered ring macrolide antibiotics may represent an important adjunct in the treatment of chronic inflammatory sinopulmonary diseases in humans.
Insights
Low-dose macrolide antibiotics offer anti-inflammatory benefits beyond infection control for chronic respiratory conditions. These treatments promote healing and tissue repair without significant bacterial resistance or immunosuppression.
Area of Science:
- Pharmacology
- Respiratory Medicine
- Immunology
Background:
- Macrolide antibiotics are known for treating sinopulmonary infections.
- Emerging evidence suggests macrolides possess anti-inflammatory and tissue-repairing properties.
- These effects occur at lower doses and longer treatment durations, independent of antimicrobial activity.
Purpose of the Study:
- To review the distinct salutary effects of macrolide antibiotics in chronic inflammatory sinopulmonary diseases.
- To highlight their role in promoting tissue repair and down-regulating inflammatory responses.
- To assess the safety profile regarding bacterial resistance and immunosuppression.
Main Methods:
- Review of experimental and clinical evidence on macrolide antibiotic effects.
- Analysis of long-term, low-dose administration in conditions like sinusitis, asthma, and cystic fibrosis.
- Evaluation of data on bacterial resistance and host immune response.
Main Results:
- Macrolides demonstrate beneficial effects in chronic respiratory inflammation at sub-antimicrobial doses.
- These effects include down-regulation of inflammatory responses and promotion of tissue repair.
- Prolonged use has not shown significant bacterial resistance or immunosuppression.
Conclusions:
- Long-term, low-dose macrolide therapy is a potential adjunct for chronic inflammatory sinopulmonary diseases.
- These agents modulate host inflammatory responses, aiding in disease management.
- Further large-scale trials are needed, but current evidence supports their use in specific conditions.
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