Abstract
Background: Less is known about the prognostic value of serum cystatin C in acute ischemic stroke (AIS) patients treated with intravenous thrombolysis (IVT). The aim of the present study was to examine the association between serum cystatin C levels and prognosis of AIS patients after IVT.
Methods: Serum cystatin C was measured within 24 hours after recombinant tissue plasminogen activator (rt-PA) treatment in 280 consecutively recruited patients with AIS. The main outcomes included combination of death and major disability, death, major disability (modified Rankin Scale score 3-5) and vascular events at 3-month follow-up.
Results: During the 3-month follow-up, 94 patients (33.6%) experienced death or major disability (28 deaths and 66 major disability) and 49 patients (17.5%) experienced vascular events. After multivariate adjustment, serum cystatin C was significantly associated with an increased risk of the combined outcome of death and major disability (OR=4.51, P = 0.006). Adding serum cystatin C quartiles to a model containing conventional risk factors improved the predictive power for the combined outcome of death and major disability (continuous net reclassification index 43.88%, P < 0.001; categorical net reclassification index 9.15%, P = 0.013; integrated discrimination improvement 2.31%, P = 0.025). Similar phenomena were also observed in major disability and vascular events.
Conclusion: Higher levels of serum cystatin C in AIS patients after IVT were independently associated with increased risks of poor functional outcomes and vascular events, especially combining conventional risk factors, suggesting that serum cystatin C might improve risk prediction for poor prognosis in AIS patients receiving rt-PA treatment.
Keywords: Cystatin C, acute ischemic stroke, intravenous thrombolysis, prognosis, cystatin, inflammation.
[http://dx.doi.org/10.1016/S0140-6736(16)31012-1] [PMID: 27733281]
[http://dx.doi.org/10.1161/STR.0000000000000158] [PMID: 29367334]
[http://dx.doi.org/10.1136/svn-2017-000074] [PMID: 28989804]
[http://dx.doi.org/10.1016/S1474-4422(16)00114-9] [PMID: 27180033]
[http://dx.doi.org/10.1161/STROKEAHA.107.489625] [PMID: 17947596]
[http://dx.doi.org/10.1056/NEJMoa041031] [PMID: 15385656]
[http://dx.doi.org/10.1161/STROKEAHA.108.520882] [PMID: 19182072]
[http://dx.doi.org/10.1042/bj2680287] [PMID: 2363674]
[http://dx.doi.org/10.1053/ajkd.2002.34487] [PMID: 12148093]
[http://dx.doi.org/10.1016/j.jns.2014.12.002] [PMID: 25529923]
[http://dx.doi.org/10.1016/j.jns.2015.09.353] [PMID: 26434615]
[http://dx.doi.org/10.1159/000321516] [PMID: 21088392]
[http://dx.doi.org/10.1159/000285165] [PMID: 20332640]
[http://dx.doi.org/10.1161/STROKEAHA.117.017808] [PMID: 28739832]
[http://dx.doi.org/10.1097/MD.0000000000000286] [PMID: 25526464]
[http://dx.doi.org/10.1371/journal.pmed.1000016] [PMID: 19166266]
[http://dx.doi.org/10.1016/j.jns.2018.09.017] [PMID: 30266415]
[http://dx.doi.org/10.1159/000479338] [PMID: 29176313]
[http://dx.doi.org/10.1016/j.atherosclerosis.2017.11.029] [PMID: 29254692]
[http://dx.doi.org/10.1161/CIRCOUTCOMES.114.001144] [PMID: 25249561]
[http://dx.doi.org/10.1136/bmj.c4986] [PMID: 20884698]
[http://dx.doi.org/10.5603/CJ.a2013.0083] [PMID: 23799556]
[http://dx.doi.org/10.1016/j.atherosclerosis.2018.07.033] [PMID: 30170219]
[http://dx.doi.org/10.1016/j.jns.2018.11.017] [PMID: 30471633]
[http://dx.doi.org/10.2174/1567202612666150102150941] [PMID: 25557377]
[http://dx.doi.org/10.1007/s00415-012-6453-2] [PMID: 22349874]
[http://dx.doi.org/10.18632/oncotarget.18061] [PMID: 28978025]
[http://dx.doi.org/10.1016/j.jocn.2013.04.014] [PMID: 24139136]
[http://dx.doi.org/10.1016/j.ejim.2018.02.005] [PMID: 29429860]
[http://dx.doi.org/10.1111/ene.13575] [PMID: 29341345]
[http://dx.doi.org/10.1161/STR.0b013e318284056a] [PMID: 23370205]
[http://dx.doi.org/10.2174/1567202614666170328095431] [PMID: 28356003]
[http://dx.doi.org/10.1161/STROKEAHA.111.641456] [PMID: 22426314]
[http://dx.doi.org/10.1007/s12640-015-9522-3] [PMID: 25697425]
[http://dx.doi.org/10.1080/01616412.2016.1187825] [PMID: 27320246]
[http://dx.doi.org/10.1159/000443338] [PMID: 26997949]
[http://dx.doi.org/10.1016/S0140-6736(00)05183-7] [PMID: 11445104]
[http://dx.doi.org/10.1161/01.STR.31.11.2597] [PMID: 11062281]
[http://dx.doi.org/10.3109/0886022X.2013.832314] [PMID: 24028541]