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Updated: Mar 16, 2026
In Vivo Imaging Systems IVIS Detection of a Neuro-Invasive Encephalitic Virus
Published on: December 2, 2012
Fungal Infection in the Brain: What We Learned from Intravital Imaging
Meiqing Shi1, Christopher H Mody2
1Division of Immunology, Virginia-Maryland Regional College of Veterinary Medicine, University of Maryland , College Park, MD , USA.
Abstract:
Approximately 1.2 billion people suffer from fungal diseases worldwide. Arguably, the most serious manifestation occurs when pathogenic fungi infect the brain, often causing fatal meningoencephalitis. For most fungi, infection occurs via the vascular route. The organism must first be arrested in the brain microvasculature and transmigrate into the brain parenchyma across the blood-brain barrier. As a result, host immune cells are recruited into the brain to contain the fungi. However, it remains poorly understood how fungi traffic to, and migrate into the brain and how immune cells interact with invading fungi in the brain. A new era of intravital fluorescence microscopy has begun to provide insights. We are able to employ this powerful approach to study dynamic interactions of disseminating fungi with brain endothelial cells as well as resident and recruited immune cells during the brain infection. In this review, with a focus on Cryptococcus neoformans, we will provide an overview of the application of intravital imaging in fungal infections in the brain, discuss recent findings and speculate on possible future research directions.
Insights
Fungal brain infections are serious, but how fungi enter the brain and interact with immune cells is unclear. Intravital imaging offers new insights into these dynamic processes during fungal meningoencephalitis.
Area of Science:
- Neuroscience
- Infectious Diseases
- Immunology
Background:
- Fungal diseases affect 1.2 billion globally, with brain infections (meningoencephalitis) being particularly fatal.
- Fungal brain infections often occur through the vascular route, requiring fungi to cross the blood-brain barrier.
- Understanding fungal brain trafficking and immune cell interactions is crucial but remains limited.
Purpose of the Study:
- To review the application of intravital fluorescence microscopy in studying fungal brain infections.
- To discuss recent findings on fungal dissemination and host immune responses in the brain.
- To explore future research directions in fungal meningoencephalitis.
Main Methods:
- Utilizing intravital fluorescence microscopy to visualize dynamic fungal-host interactions in real-time.
- Focusing on the model organism Cryptococcus neoformans to study brain infection dynamics.
- Observing fungal arrest in brain microvasculature and transmigration across the blood-brain barrier.
Main Results:
- Intravital imaging reveals dynamic interactions between fungi, brain endothelial cells, and immune cells.
- The study visualizes fungal trafficking and immune cell recruitment within the brain parenchyma.
- Recent findings provide novel insights into the mechanisms of fungal brain invasion.
Conclusions:
- Intravital imaging is a powerful tool for understanding fungal brain infections.
- Further research is needed to fully elucidate fungal-host interactions and develop effective treatments.
- This approach holds promise for advancing our knowledge of fungal meningoencephalitis.
