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Noninvasive whole-brain imaging of glymphatic dynamics.

📚 期刊: Science advances 📅 发表: 0000-00-00 🔬 PMID: 42308292 🔗 DOI: 10.1126/sciadv.aee4926 👁️ 浏览: 3

👤 作者: Wang N, Yu X, Lowerison M, Li Q, Canning AJ, He P, Dang L, Degan S, Mace B, Xu Y

心血管

📝 摘要

Cerebrospinal fluid circulation through the glymphatic system plays a crucial role in removing metabolic waste from the central nervous system. However, the mechanism underlying the brain-wide glymphatic dynamics is not yet fully understood, in part due to the lack of glymphatic imaging technologies on deep brains. Here, we report a hybrid imaging technology that integrates three-dimensional photoacoustic tomography and ultrasound localization microscopy (3D-PAULM), enhanced by a photoacoustic dye with strong optical absorption in the second near-infrared window (NIR-II). 3D-PAULM allows for continuous, noninvasive, whole-brain imaging in mice through intact skull, providing superresolution mapping of the brain vasculature and highly sensitive tracing of the NIR-II dye in the glymphatic system. Using 3D-PAULM, we investigated the glymphatic function impaired by ischemic stroke, aging, and anesthesia. Our results provide insights into glymphatic transport under various physiological as well as pathological conditions and establish 3D-PAULM as a valuable tool for preclinical glymphatic research.
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