Mishra R; Chauhan N; Agrawal KK · 2026 · Current neurovascular research
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BACKGROUND: The effects of Alzheimer's disease (AD) on society are profound. The blood-brain barrier selectively permits the penetration of specific forms of molecules through the blood circulation into the CNS, which can restrict the effectiveness of medications supplied systemically. The therapeutic targets are located in the CNS. However, local administration channels to the CNS are rather intrusive, which can lead to patient discomfort and limit the feasibility of repeated treatments. METHODOLOGY: This article has evaluated treatment methodologies for AD that use nanoparticles to target the brain and the pathological features of the illness. The material that is currently available has been categorized based on the aspect of AD that is discussed: targeted medication and neurodegeneration. RESULT: The use of nanoparticles in the targeted delivery of medications intended to alleviate the symptoms of AD or halt the disease's progression has yielded positive results. Because of their multivalence, nanoparticles can target the treatment site, pass through the blood-brain barrier, and be functionalized with various targeting groups. Intravenous administration, rather than more intrusive techniques, has enhanced drug bioavailability in the CNS. Furthermore, the development of vaccinations and medication formulations for intranasal delivery has utilized nanoparticles. DISCUSSION: This study focused on the advancement of AD treatment. Nanoparticles are designed to enhance drug bioavailability through intravenous and intranasal routes for quicker brain access with fewer side effects. Nanoparticles also aid in targeting disease features like amyloid- beta plaques and tau tangles. While results in animal models are positive, transitioning to human clinical trials requires a more profound understanding of AD mechanisms and biomarker identification. CONCLUSION: Research employing animal models suggests that targeted nanoparticles can enhance the effectiveness of AD treatments. A deeper understanding of AD mechanisms will lead to more successful targeted nanoparticle applications.
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