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Published on: April 6, 2017
Aerosolized Delivery of Antifungal Agents
Abstract:
Pulmonary infections caused by Aspergillus species are associated with significant morbidity and mortality in immunocompromised patients. Although the treatment of pulmonary fungal infections requires the use of systemic agents, aerosolized delivery is an attractive option in prevention because the drug can concentrate locally at the site of infection with minimal systemic exposure. Current clinical evidence for the use of aerosolized delivery in preventing fungal infections is limited to amphotericin B products, although itraconazole, voriconazole, and caspofungin are under investigation. Based on conflicting results from clinical trials that evaluated various amphotericin B formulations, the routine use of aerosolized delivery cannot be recommended. Further research with well-designed clinical trials is necessary to elucidate the therapeutic role and risks associated with aerosolized delivery of antifungal agents. This article provides an overview of aerosolized delivery systems, the intrapulmonary pharmacokinetic properties of aerosolized antifungal agents, and key findings from clinical studies.
Insights
Aerosolized antifungal delivery shows promise for preventing pulmonary fungal infections in immunocompromised patients, but current evidence is limited and routine use is not recommended. Further research is needed to confirm its therapeutic role and safety.
Area of Science:
- Pulmonology
- Infectious Diseases
- Pharmacology
Background:
- Pulmonary Aspergillus infections pose significant risks for immunocompromised individuals.
- Systemic antifungal agents are standard treatment, but aerosolized delivery offers localized drug concentration with reduced systemic exposure for prevention.
- Current evidence for aerosolized antifungals in prevention is mainly for amphotericin B, with other agents under investigation.
Purpose of the Study:
- To review aerosolized delivery systems for antifungal agents.
- To discuss intrapulmonary pharmacokinetics of inhaled antifungals.
- To summarize clinical findings on aerosolized antifungal use in preventing pulmonary fungal infections.
Main Methods:
- Literature review of aerosolized delivery systems.
- Analysis of pharmacokinetic data for inhaled antifungal drugs.
- Evaluation of clinical trial results for aerosolized antifungal prevention strategies.
Main Results:
- Conflicting clinical trial results exist for various amphotericin B formulations.
- Routine use of aerosolized delivery for fungal infection prevention is not currently recommended.
- Other antifungal agents like itraconazole, voriconazole, and caspofungin are being investigated for aerosolized delivery.
Conclusions:
- Aerosolized delivery is a potential strategy for preventing pulmonary fungal infections, particularly in high-risk populations.
- Insufficient high-quality clinical evidence currently supports routine use of aerosolized antifungals.
- Well-designed clinical trials are essential to determine the efficacy, safety, and optimal use of aerosolized antifungal agents.
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