Mannose-binding lectin deficiency does not appear to predispose to cryptococcosis in non-immunocompromised patients

Medical Mycology
Damon P EisenRobyn M Minchinton

Abstract

While most patients with cryptococcosis have obvious cellular immune deficiency, a minority have no apparent predisposing factors. However, in the latter there may be subtle innate immune system deficiencies which go unrecognized. Mannose-binding lectin (MBL) deficiency is associated with increased susceptibility to infectious diseases and may predispose to cryptococcosis, particularly when it disseminates to the central nervous system (CNS) in apparently immunocompetent patients. MBL function and levels, as well as MBL2 genotype were determined in 36 HIV-negative cryptococcosis patients (25 with CNS involvement) using C4 deposition and mannan-binding ELISA. MBL deficiency was defined using C4 deposition level < 0.2 U/microl or mannan-binding level < 0.5 microg/ml. MBL results were compared between patients with cryptococcosis and healthy controls and among the cryptococcosis patients according to the site of their disease. There was no difference in MBL function, mannan-binding level or increase in the frequency of MBL deficiency or low producing MBL2 genotypes in any of these comparisons. Patients with CNS cryptococcosis were no more likely to be MBL deficient than those with non-CNS disease. It appears that MBL deficiency is...Continue Reading

Citations

Dec 31, 2008·Infection and Immunity·Kileen L MershonDavid O Beenhouwer
Dec 3, 2014·Fungal Genetics and Biology : FG & B·Wei FangWanqing Liao

❮ Previous
Next ❯

Related Concepts

Related Feeds

Central Nervous System Fungal Infections

Central nervous system fungal infections are rare and typically occur in immunocompromised patients, such as those with HIV infection or transplant recipients. Discover the latest research on central nervous system fungal infections here.