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White matter free water mediates the associations between placental growth factor, white matter hyperintensities, and cognitive status
Alzheimer's & Dementia ( IF 13.0 ) Pub Date : 2024-12-18 , DOI: 10.1002/alz.14408
Kyle C. Kern, Manu Vohra, Marissa L. Thirion, Danny J. J. Wang, Donna M. Wilcock, Jeffrey F. Thompson, Gary A. Rosenberg, Abhay Sagare, Abhay Moghekar, Hanzhang Lu, Tiffany Lee, Fanny M. Elahi, Claudia L. Satizabal, Russell Tracy, Sudha Seshadri, Kristin Schwab, Karl Helmer, Herpreet Singh, Pia Kivisäkk, Steven M. Greenberg, Keith Vossel, Joel H. Kramer, Pauline Maillard, Charles S. DeCarli, Jason D. Hinman

INTRODUCTIONPlacental growth factor (PlGF) may regulate cerebrovascular permeability. We hypothesized that white matter interstitial fluid accumulation, estimated via magnetic resonance imaging (MRI) free water (FW), would explain the associations between elevated PlGF, white matter hyperintensities (WMH), and cognitive impairment.METHODSMarkVCID consortium participants ≥55 years old with plasma PlGF and brain MRI were included. We tested cross‐sectionally whether FW mediated the associations between PlGF and WMH, or PlGF and cognition, measured using the Clinical Dementia Rating (CDR) scale and an executive function (EF) composite (Uniform Data Set version 3 [UDS3]‐EF).RESULTSFor 370 participants (mean age 72), a higher PlGF was associated with higher FW, higher WMH, and higher CDR, but not UDS3‐EF. Higher FW was associated with higher WMH, higher CDR, and lower UDS3‐EF. FW explained 26% of the association between PlGF and CDR and 73% of the association between PlGF and WMH.DISCUSSIONElevated PlGF may contribute to WMH and cognitive impairment through white matter FW accumulation.CLINICAL TRIAL REGISTRATIONNCT06284213Highlights PlGF is a promising blood‐based biomarker for vascular cognitive impairment. In MarkVCID, higher PlGF was associated with accumulated white matter FW on MRI. FW mediated the association between higher PlGF and MRI‐visible white matter injury. FW mediated the association between PlGF and worse CDR scale. PlGF may contribute to cognitive dysfunction via accumulated interstitial fluid.

中文翻译:


无白质水介导胎盘生长因子、白质高信号和认知状态之间的关联



引言 磷酸盐生长因子 (PlGF) 可调节脑血管通透性。我们假设通过磁共振成像 (MRI) 游离水 (FW) 估计的白质间质液积聚可以解释 PlGF 升高、白质高信号 (WMH) 和认知障碍之间的关联。方法纳入 ≥55 岁血浆 PlGF 和脑部 MRI 的 MarkVCID 联盟参与者。我们横断面测试了 FW 是否介导了 PlGF 和 WMH 或 PlGF 与认知之间的关联,使用临床痴呆评分 (CDR) 量表和执行功能 (EF) 综合 (统一数据集版本 3 [UDS3]-EF) 测量。结果在 370 名参与者 (平均年龄 72) 中,较高的 PlGF 与较高的 FW、较高的 WMH 和较高的 CDR 相关,但与 UDS3-EF 无关。较高的 FW 与较高的 WMH 、较高的 CDR 和较低的 UDS3-EF 相关。FW 解释了 PlGF 和 CDR 之间 26% 的关联以及 PlGF 和 WMH 之间 73% 的关联。讨论升高的 PlGF 可能通过白质 FW 积累导致 WMH 和认知障碍。临床试验注册NCT06284213亮点 PlGF 是一种很有前途的基于血液的血管认知障碍生物标志物。在 MarkVCID 中,较高的 PlGF 与 MRI 上积累的白质 FW 相关。FW 介导较高 PlGF 与 MRI 可见白质损伤之间的关联。FW 介导 PlGF 与较差 CDR 量表之间的关联。PlGF 可能通过积聚的间质液导致认知功能障碍。
更新日期:2024-12-18
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