Higher Plasma Fractalkine Is Associated With Better 6-Month Outcome From Ischemic Stroke

被引:51
作者
Donohue, Megan M. [1 ]
Cain, Kevin [2 ]
Zierath, Dannielle [1 ]
Shibata, Dean [3 ]
Tanzi, Patricia M. [1 ]
Becker, Kyra J. [1 ]
机构
[1] Univ Washington, Sch Med, Dept Neurol, Seattle, WA USA
[2] Univ Washington, Sch Med, Dept Biostat, Seattle, WA USA
[3] Univ Washington, Sch Med, Dept Radiol, Seattle, WA 98195 USA
关键词
CX3CL1; fractalkine; inflammation; outcome; stroke; INTERCELLULAR-ADHESION MOLECULE-1; SYSTEMIC-LUPUS-ERYTHEMATOSUS; FOCAL CEREBRAL-ISCHEMIA; TRAUMATIC BRAIN-INJURY; CENTRAL-NERVOUS-SYSTEM; MICROGLIAL ACTIVATION; SOLUBLE FRACTALKINE; HIPPOCAMPAL-NEURONS; ALZHEIMERS-DISEASE; RECEPTOR CX(3)CR1;
D O I
10.1161/STROKEAHA.112.657411
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
Background and Purpose-Fractalkine (CX3CL1) is a unique chemokine that is constitutively expressed on neurons where it serves as an adhesion molecule for lymphocytes and monocytes. CX3CL1 may also be cleaved from the surface of these cells and enter the circulation to act as a traditional chemokine. CX3CL1 could thus influence the inflammatory response after stroke. We hypothesized that patients with higher plasma CX3CL1 after stroke would have a more robust inflammatory response and experience worse outcome. Methods-Plasma CX3CL1 concentrations were assessed in 85 patients who were part of a larger study evaluating immune responses after ischemic stroke; CX3CL1 values were available from Day 1 to Day 180 after stroke onset. CX3CL1 was correlated to measures of inflammation and its effect on outcome assessed. Results-At 1 day after stroke, CX3CL1 was lower in patients with severe strokes. At 180 days after stroke, CX3CL1 concentrations were lower in patients with poor outcome. The association of CX3CL1 and outcome at 180 days was independent of initial stroke severity. Plasma CX3CL1 at 180 days was inversely associated with systemic markers of inflammation, including white blood cell counts and high-sensitivity C-reactive protein. Conclusions-In contrast to our original hypothesis, lower concentrations of CX3CL1 are associated with worse stroke outcome. In light of recent studies suggesting an immunomodulatory and neuroprotective role for CX3CL1 in a variety of neurodegenerative diseases, a therapeutic role for CX3CL1 in stroke recovery should be considered. (Stroke. 2012; 43: 2300-2306.)
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页码:2300 / +
页数:9
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