Nanoparticle-enhanced approaches to stroke: Overcoming challenges in diagnosis and treatment

Nanoparticle-based drug delivery and molecular imaging methods offer promising advancements in the diagnosis and treatment of stroke, addressing key challenges such as the blood-brain barrier (BBB) and limited imaging resolution. Nanocarriers like PEGylated liposomes, exosomes, and polymeric nanoparticles have shown improved drug targeting, enhanced therapeutic efficacy, and reduced side effects in stroke treatment. In molecular imaging, nanoparticle-enhanced techniques, including PET, MRI, and CT, enable more precise detection of ischemic areas and thrombus formation, though limitations such as low signal sensitivity and poor tissue penetration persist. While these approaches demonstrate significant potential, challenges remain, including nanoparticle toxicity, imaging insensitivity, and the need for combination imaging methods. Looking ahead, future research should focus on overcoming these barriers through the development of multifunctional nanoparticles for theranostics, which combine drug delivery with real-time imaging. Further advancements in molecular imaging and personalized nanomedicine could enhance diagnostic accuracy and treatment personalization. With continued innovation, nanoparticle-based strategies could revolutionize stroke management, improving both therapeutic outcomes and diagnostic precision in clinical settings.