The role of ionotropic glutamate receptors in Alzheimer's disease: A scientometric analysis

Background Alzheimer's disease (AD) is a progressive neurodegenerative disorder characterized by amyloid-β plaques, neurofibrillary tangles, and synaptic dysfunction. Dysregulation of ionotropic glutamate receptors (iGluRs), including NMDA, AMPA, and kainate receptors, contributes to excitotoxicity, synaptic impairment, and cognitive decline, underscoring their therapeutic potential. Objective This study aimed to conduct a comprehensive bibliometric analysis of iGluR research in AD from January 1, 1986 to August 23, 2025. Methods We systematically searched and analyzed the publications related to iGluRs in AD from PubMed, Web of Science, and Scopus using CiteSpace, VOSviewer, and Bibliometrix. Metrics included publication volume, citation impact, international collaborations, keyword co-occurrence, and burst detection. Results A total of 4810 papers were identified for analysis. The most prolific country, institution, journal, and author were the United States, Harvard University system, Journal of Neurochemistry , and Lipton SA, respectively. Research has evolved from NMDAR dysfunction and Aβ toxicity to clinical applications, such as memantine therapy, with recent trends focusing on AMPAR modulation and neuroprotection. Emerging researchers from China have demonstrated rapid growth. Keyword analysis reflected a sustained interest in molecular mechanisms and an increasing emphasis on clinical translation. Conclusions This study delineates the evolution of iGluR research in AD from mechanistic insights to therapeutic innovation. While NMDARs remain central, future efforts should prioritize understudied targets like AMPARs and KARs, and leverage emerging technologies, such as cryo-electron microscopy, single-cell sequencing, and artificial intelligence, to refine therapeutic strategies and facilitate personalized medicine. It highlights targeted iGluR modulation as a promising therapeutic avenue for combating AD.