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Posaconazole in the management of refractory invasive fungal infections
Stefan Langner1, Philipp B Staber, Peter Neumeister
1Division of Hematology, Department of Internal Medicine, Medical University of Graz, Austria.
Abstract:
The rising incidence of invasive fungal infections due to the expanding population of immunocompromised hosts and the increasing prevalence of fungal resistance has led to the need for novel antifungal agents. Posaconazole, a new member of the triazole class has demonstrated in vitro activity against a broad spectrum of fungi and clinical activity against various fungal pathogens, including Aspergillus spp., Candida spp., zygomycetes, and Fusarium spp. To date, posaconazole has been approved for prophylaxis of invasive fungal infections in stem cell transplant recipients with acute graft versus host disease (GVHD) and neutropenic patients receiving intensive induction chemotherapy for acute myelogenous leukemia and myelodys-plastic syndrome. In addition, it has been licensed for use in oropharyngeal candidiasis and for salvage therapy in invasive aspergillosis, fusariosis, coccidioidomycosis, chromoblastomycosis, and mycetoma. Posaconazole is the only azole with activity against zygomycetes and other difficult-to-treat fungi, representing a potential treatment option for refractory invasive mycosis. This article reviews available preclinical and clinical data of posaconazole, focusing on its role in the teatment of refractory invasive fungal infections.
Insights
Posaconazole is a novel triazole antifungal effective against a broad spectrum of fungi, including difficult-to-treat infections. It offers a crucial treatment option for immunocompromised patients facing invasive fungal infections and resistance.
Area of Science:
- Mycology
- Infectious Diseases
- Pharmacology
Background:
- Rising incidence of invasive fungal infections (IFIs) in immunocompromised hosts.
- Increasing prevalence of antifungal resistance necessitates novel therapeutic agents.
- Triazole antifungals, like posaconazole, show promise against broad-spectrum fungi.
Purpose of the Study:
- To review preclinical and clinical data of posaconazole.
- To focus on posaconazole's role in treating refractory invasive fungal infections.
- To highlight posaconazole's unique activity against zygomycetes.
Main Methods:
- Review of preclinical studies evaluating posaconazole's in vitro and in vivo efficacy.
- Analysis of clinical trial data assessing posaconazole's safety and effectiveness.
- Examination of posaconazole's pharmacokinetic and pharmacodynamic properties.
Main Results:
- Posaconazole demonstrates broad-spectrum in vitro activity against Aspergillus, Candida, zygomycetes, and Fusarium species.
- Clinical approvals include prophylaxis for stem cell transplant recipients and neutropenic patients, and treatment for oropharyngeal candidiasis.
- Posaconazole is effective as salvage therapy for invasive aspergillosis, fusariosis, and other mycoses.
Conclusions:
- Posaconazole is a valuable therapeutic option for IFIs, particularly in immunocompromised populations.
- Its activity against zygomycetes and refractory infections makes it a significant advancement in antifungal therapy.
- Posaconazole represents a key treatment for challenging and resistant invasive fungal infections.
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