Theranostics Against Brain-Eating Amoebae Infections

Primary amoebic meningoencephalitis (PAM), caused by Naegleria fowleri, is a rapidly progressing and almost universally fatal brain infection, often associated with exposure to warm freshwater or contaminated water. Despite being rare, its public health significance is profound due to diagnostic challenges, limited treatment options, and a mortality rate exceeding 97%. The emergence of climate change, with rising global temperatures, further underscores the need for innovative strategies to mitigate this deadly disease. This chapter explores recent theranostic advancements with potential use against PAM, with a focus on novel therapeutic and diagnostic approaches. Multifunctional nanoparticles, including theranostic platforms, are highlighted for their ability to cross the blood-brain barrier and provide targeted drug delivery. Advances in nanoparticle design, such as conjugation with antiamoebic agents and real-time diagnostic capabilities, present exciting opportunities to address current therapeutic limitations. Additionally, challenges in prevention, public awareness, and water quality monitoring are discussed. The application of nanotechnology offers transformative potential for managing N. fowleri infections. Theranostic nanoparticles, capable of combining diagnosis and treatment in a single platform, could revolutionize how PAM is treated and monitored. However, translating these innovations into clinical practice requires further research to optimize efficacy, minimize side effects, and ensure safety. A multidisciplinary approach that integrates nanomedicine, public health measures, and environmental management is essential to combatting this devastating disease effectively.