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Published on: December 14, 2017
Biofilm Formation by Cryptococcus neoformans
Luis R Martinez1, Arturo Casadevall2
1New York Institute of Technology, College of Osteopathic Medicine, Department of Biomedical Sciences, Old Westbury, NY 11568.
Abstract:
The fungus Cryptococcus neoformans possesses a polysaccharide capsule and can form biofilms on medical devices. The increasing use of ventriculoperitoneal shunts to manage intracranial hypertension associated with cryptococcal meningoencephalitis highlights the importance of investigating the biofilm-forming properties of this organism. Like other microbe-forming biofilms, C. neoformans biofilms are resistant to antimicrobial agents and host defense mechanisms, causing significant morbidity and mortality. This chapter discusses the recent advances in the understanding of cryptococcal biofilms, including the role of its polysaccharide capsule in adherence, gene expression, and quorum sensing in biofilm formation. We describe novel strategies for the prevention or eradication of cryptococcal colonization of medical prosthetic devices. Finally, we provide fresh thoughts on the diverse but interesting directions of research in this field that may result in new insights into C. neoformans biology.
Insights
Cryptococcus neoformans forms drug-resistant biofilms on medical devices, posing risks for patients with shunts. Research explores its capsule, gene expression, and quorum sensing to develop new prevention and eradication strategies.
Area of Science:
- Mycology
- Infectious Diseases
- Biomaterials Science
Background:
- Cryptococcus neoformans forms biofilms on medical devices, particularly ventriculoperitoneal shunts used for intracranial hypertension.
- These biofilms exhibit resistance to antimicrobial agents and host defenses, contributing to significant patient morbidity and mortality.
Purpose of the Study:
- To review recent advances in understanding Cryptococcus neoformans biofilm formation.
- To explore novel strategies for preventing and eradicating cryptococcal colonization of medical prosthetic devices.
Main Methods:
- Review of current literature on Cryptococcus neoformans biofilms.
- Analysis of the role of the polysaccharide capsule, gene expression, and quorum sensing in biofilm development.
- Discussion of emerging prevention and eradication strategies.
Main Results:
- The polysaccharide capsule plays a role in adherence during biofilm formation.
- Gene expression and quorum sensing are critical components of cryptococcal biofilm development.
- Novel strategies targeting biofilm formation are under investigation.
Conclusions:
- Understanding the mechanisms of cryptococcal biofilm formation is crucial for developing effective treatments.
- Targeting adherence, gene expression, and quorum sensing offers promising avenues for preventing device colonization.
- Further research into C. neoformans biology may yield new therapeutic insights.
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