Abstract
Cerebral small vessel disease (CSVD) is increasingly being recognized as a leading contributor to cognitive impairment in the elderly. However, there is a lack of effective preventative or therapeutic options for CSVD. In this exploratory study, we investigated the interplay between neuroinflammation and CSVD pathogenesis as well as the cognitive performance, focusing on NLRP3 signaling as a new therapeutic target. Spontaneously hypertensive stroke-prone (SHRSP) rats served as a CSVD model. We found that SHRSP rats showed decline in learning and memory abilities using morris water maze test. Activated NLRP3 signaling and an increased expression of the downstream pro-inflammatory factors, including IL (interleukin)-6 and tumor necrosis factor α were determined. We also observed a remarkable increase in the production of pyroptosis executive protein gasdermin D, and elevated astrocytic and microglial activation. In addition, we identify several neuropathological hallmarks of CSVD, including blood-brain barrier breakdown, white matter damage, and endothelial dysfunction. These results were in correlation with the activation of NLRP3 inflammasome. Thus, our findings reveal that the NLRP3-mediated inflammatory pathway could play a central role in the pathogenesis of CSVD, presenting a novel target for potential CSVD treatment.
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Funding
This work was supported by the National Natural Science Foundation of China (82201626), the Natural Science Foundation of Liaoning Province (2022-MS-442), and the Dalian Municipal Medical Key Specialty Climbing Project (2022ZZ215).
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All authors contributed to the study conception and design. M.Y.Z. and X.Y.L. performed the experiments. M.Y.Z. and C.C. analyzed and interpreted the data. M.Y.Z. and C.C. wrote the first draft of the manuscript. All authors read and approved the final manuscript.
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P.W. and M.J. are co-owners of Ti-com, LLC and IntraART, LLC. All other authors declare that they have no conflict of interest with respect to the research.
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Zhang, M., Lan, X., Gao, Y. et al. Activation of NLRP3 inflammasome in a rat model of cerebral small vessel disease. Exp Brain Res (2024). https://doi.org/10.1007/s00221-024-06824-9
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DOI: https://doi.org/10.1007/s00221-024-06824-9