Emerging fluconazole resistance: Implications for the management of cryptococcal meningitis

Area of Science:

• Infectious Diseases
• Mycology
• Neuroscience

Background:

• Cryptococcal meningitis remains a significant opportunistic infection in individuals with advanced HIV.
• Emerging antifungal resistance, particularly to fluconazole, poses a growing challenge in managing this disease.
• Standard treatment protocols may be insufficient in cases involving resistant fungal strains.

Purpose of the Study:

• To report a clinical case of cryptococcal meningitis caused by a fluconazole-resistant strain of Cryptococcus neoformans in an HIV-seropositive individual.
• To illustrate the management difficulties and therapeutic strategies employed in such complex cases.
• To underscore the clinical implications of increasing fluconazole resistance in Cryptococcus species.

Main Methods:

• Case report of an HIV-seropositive patient diagnosed with cryptococcal meningitis.
• Identification of a fluconazole-resistant strain of Cryptococcus neoformans.
• Treatment regimen involving multiple rounds of amphotericin B and high-dose fluconazole (800-1200 mg).
• Monitoring of clinical response and cerebrospinal fluid (CSF) sterilization.

Main Results:

• The patient experienced several episodes of clinical relapse despite initial treatment.
• High-dose fluconazole (800-1200 mg) combined with amphotericin B was ultimately required for management.
• Cerebrospinal fluid sterilization was achieved and maintained with the intensive therapeutic approach.
• The case confirmed the presence of a fluconazole-resistant Cryptococcus neoformans isolate.

Conclusions:

• Increasing rates of fluconazole resistance in Cryptococcus species present a significant clinical dilemma.
• Management of cryptococcal meningitis with resistant strains necessitates aggressive and potentially prolonged antifungal therapy.
• This case emphasizes the need for vigilant monitoring of antifungal susceptibility and adaptation of treatment strategies.