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Persistent NK cell deficiency associated with pulmonary cryptococcosis.

Ann Clin Microbiol Antimicrob

January 2025

Marseille University Hospital Timone, Public Assistance Marseille Hospitals, Marseille Immunopole, Marseille, France.

We describe pulmonary cryptococcosis in a 28-year-old previously healthy man. Exhaustive immunological investigations revealed a primary NK cell deficiency associated with a secondary impaired anti-Cryptococcus CD8 lymphocyte response and the expansion of a CD8Vβ14 + T cell clone. This case illustrates the potential role of NK cells in immunity against Cryptococcus.

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is a fungal pathogen that can cause lethal disease in immunocompromised patients. Immunocompetent host immune responses, such as formation of pulmonary granulomas, control the infection and prevent disseminated disease. Little is known about the immunological conditions establishing the latent infection granuloma in the lungs.

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Comparing the Performance of Two Cryptococcal Antigen Detection Tests: Chemiluminescence vs Colloidal Gold Methods.

Infect Drug Resist

December 2024

Centre of Laboratory Medicine, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, People's Republic of China.

Objective: To compare the performance of a new chemiluminescence method with that of the traditional colloidal gold method for cryptococcal antigen (CrAg) detection.

Methods: Cryptococcosis is a global invasive mycosis associated with significant morbidity and mortality. Cryptococcal antigen (CrAg) testing from serum and cerebrospinal fluid (CSF) has been regarded as the gold standard for early diagnosis.

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This report describes the case of a 41-year-old male patient complaining of a hacking cough. The patient was treated with a Janus kinase (JAK) inhibitor for psoriasis. Blood tests revealed mild lymphopenia and high levels of serum cryptococcal antigen.

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