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We report a case of Cryptococcus gattii meningitis in a patient with HIV in the Peruvian Amazon. A 36-year-old male patient with severe neurological symptoms that was diagnosed by cerebrospinal fluid culture. Although liposomal amphotericin B and flucytosine are considered the standard antifungal therapy, due to a lack of resources, an alternative treatment of amphotericin B deoxycholate and fluconazole was used. Even with this alternative, treatment faced challenges due to the persistence of the microorganism. This case highlights the importance of considering C. gattii in the differential diagnosis of cryptococcal meningitis in immunocompromised patients, even in areas where the prevalence of this pathogen is low. The effectiveness of treatment and the patient's survival underscore the need for diagnostic and therapeutic strategies adapted to resource-limited settings.
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http://dx.doi.org/10.17843/rpmesp.2025.422.14195 | DOI Listing |
Rev Peru Med Exp Salud Publica
August 2025
Universidad Nacional de la Amazonía Peruana, Iquitos, Perú.
We report a case of Cryptococcus gattii meningitis in a patient with HIV in the Peruvian Amazon. A 36-year-old male patient with severe neurological symptoms that was diagnosed by cerebrospinal fluid culture. Although liposomal amphotericin B and flucytosine are considered the standard antifungal therapy, due to a lack of resources, an alternative treatment of amphotericin B deoxycholate and fluconazole was used.
View Article and Find Full Text PDFMedicine (Baltimore)
August 2025
Department of Orthopedics, Xiangtan Central Hospital, Xiangtan, Hunan Province, China.
Rationale: Cryptococcal meningitis is caused by Cryptococcus neoformans and Cryptococcus gattii, predominantly affects immunocompromised host. Resistance to amphotericin B poses therapeutic challenges, especially in immunocompetent individuals, where evidence is scarce.
Patient Concerns: This study reports a case of an old immunocompetent male diagnosed with amphotericin B-resistant C neoformans meningitis.
Pharmaceuticals (Basel)
August 2025
Graduation Program in Animal Biology, University of Brasilia, Brasilia 70910-900, Brazil.
Actinobacteria are one of the largest bacterial phyla. These microbes produce bioactive compounds, such as antifungals, antibiotics, immunological modulators, and anti-tumor agents. Studies on actinobacteria isolated from the Brazilian Savannah biome (Cerrado) are scarce and mostly address metagenomics or the search for hydrolytic enzyme-producing microbes.
View Article and Find Full Text PDFInfect Dis Rep
August 2025
Laboratório de Biofísica de Fungos, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil.
Background/objectives: presents a significant threat to healthy individuals. Titan cell formation, a key virulence factor, is influenced by the nutritional environment and plays a critical role in immune evasion and stress resistance. This study investigates the molecular and biophysical changes in titanized cells grown in nutrient-rich Neurobasal™ medium, a potent inducer of titan cells.
View Article and Find Full Text PDFBraz J Microbiol
August 2025
Department of Animal Production and Preventive Veterinary Medicine, School of Veterinary Medicine and Zootechny, São Paulo State University, Botucatu, SP, Brazil.
Cryptococcus is an opportunistic pathogen responsible for cryptococcosis, a fungal infection with high mortality, particularly in immunocompromised individuals. Accurate and rapid species identification is critical for effective diagnosis and treatment. This study developed and standardized a multiplex PCR protocol targeting the polymorphic PRP8 gene, a novel molecular marker proposed for differentiation of C.
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