2026-06-05T15:19:19Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/375092026-02-03T11:17:36Zcom_10630_2254col_10630_37953

00925njm 22002777a 4500 dc Kwon, Wu author Moreno-Gonzalez, Ines author Taylor-Presse, Kaithlyn author Edwards, George author Gamez, Nazaret author Calderon, Olivia author Zhu, Be author Velasquez, Francisco C author Soto, Claudio author Sevick-Muraca, Eva Marie author Taylor-Presse author 2019 Cerebrospinal fluid (CSF) outflow from the brain occurs through absorption into the arachnoid villi and, more predominantly, through meningeal and olfactory lymphatics that ultimately drain into the peripheral lymphatics. Impaired CSF outflow has been postulated as a contributing mechanism in Alzheimer's disease (AD). Herein we conducted nearinfrared fluorescence imaging of CSF outflow into the peripheral lymph nodes (LNs) and of peripheral lymphatic function in a transgenic mouse model of AD (5XFAD) and wild-type (WT) littermates. CSF outflow was assessed from change in fluorescence intensity in the submandibular LNs as a function of time following bolus, an intrathecal injection of indocyanine green (ICG). Peripheral lymphatic function was measured by assessing lymphangion contractile function in lymphatics draining into the popliteal LN following intradermal ICG injection in the dorsal aspect of the hind paw. The results show 1) significantly impaired CSF outflow into the submandibular LNs of 5XFAD mice and 2) reduced contractile frequency in the peripheral lymphatics as compared to WT mice. Impaired CSF clearance was also evidenced by reduction of fluorescence on ventral surfaces of extracted brains of 5XFAD mice at euthanasia. These results support the hypothesis that lymphatic congestion caused by reduced peripheral lymphatic function could limit CSF outflow and may contribute to the cause and/or progression of AD. Kwon S, Moreno-Gonzalez I, Taylor-Presse K, et al. Impaired Peripheral Lymphatic Function and Cerebrospinal Fluid Outflow in a Mouse Model of Alzheimer’s Disease. Journal of Alzheimer’s Disease. 2019;69(2):585-593. https://hdl.handle.net/10630/37509 10.3233/JAD-190013 Alzheimer, Enfermedad de Impaired Peripheral Lymphatic Function and Cerebrospinal Fluid Outflow in a Mouse Model of Alzheimer's Disease