Experimental cerebral lesions produced by inoculation with Basidiobolus strains

Area of Science:

• Mycology
• Neuropathology
• Infectious Diseases

Background:

• Basidiobolus is a genus of fungi known to cause infections in humans and animals.
• Fungal infections of the central nervous system can lead to severe neurological complications.

Purpose of the Study:

• To investigate the neuropathogenicity of Basidiobolus strains.
• To determine the potential for Basidiobolus to cause brain lesions.

Main Methods:

• Intracerebral inoculation of mice with two Basidiobolus strains (hyphal material).
• Histopathological examination of brain tissue to identify fungal elements and inflammatory responses.
• Comparison of lesion development following intracerebral versus extra-cerebral inoculation.

Main Results:

• Progressive chronic granulomatous lesions were observed in the brains of mice after intracerebral inoculation.
• Fungal hyphae, spherical structures, and granular material were identified within granuloma tissue surrounding brain ventricles.
• No progressive lesions occurred when Basidiobolus mycelium was inoculated at extra-cerebral sites.

Conclusions:

• Basidiobolus strains possess the capacity to induce progressive neuropathology when introduced directly into the brain.
• The development of lesions appears to be site-specific, with the brain being a susceptible target following direct inoculation.