Biological age is better than chronological as predictor of 3-month outcome in ischemic stroke.


OBJECTIVE:To analyze the effect of age-related DNA methylation changes in multiple cytosine-phosphate-guanine (CpG) sites (biological age [b-age]) on patient outcomes at 3 months after an ischemic stroke. METHODS:We included 511 patients with first-ever acute ischemic stroke assessed at Hospital del Mar (Barcelona, Spain) as the discovery cohort. Demographic and clinical data, including chronological age (c-age), vascular risk factors, initial stroke severity, recanalization treatment, and previous and 3-month modified Rankin Scale (p-mRS and 3-mRS, respectively) were registered. B-age was estimated with an algorithm, based on DNA methylation in 71 CpGs. Bivariate analysis determined variables associated with 3-mRS for inclusion in ordinal multivariate analysis. RESULTS:After ordinal regressions for 3-month ischemic stroke outcome (3-mRS), b-age was associated with outcome (odds ratio 1.04 [95% confidence interval 1.01-1.07]), nullifying c-age. Stepwise regression kept b-age, basal NIH Stroke Scale, sex, p-mRS, and recanalization treatment as better explanatory variables, instead of c-age. These results were successfully replicated in an independent cohort. CONCLUSIONS:B-age, estimated by DNA methylation, is an independent predictor of ischemic stroke outcome regardless of chronological years.






Soriano-Tárraga C,Mola-Caminal M,Giralt-Steinhauer E,Ois A,Rodríguez-Campello A,Cuadrado-Godia E,Gómez-González A,Vivanco-Hidalgo RM,Fernández-Cadenas I,Cullell N,Roquer J,Jiménez-Conde J




Has Abstract


2017-08-22 00:00:00














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    abstract::We studied the effect of CSF drainage on cerebral blood flow (CBF) in normal pressure hydrocephalus (NPH) and non-NPH dementia using the 133Xenon inhalation technique. Dementia patients had lower CBF than matched elderly normals. Flow values for NPH and non-NPH patients did not differ before or after CSF drainage. CBF...


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    authors: Ishigaki C,Patria SY,Nishio H,Yabe M,Matsuo M

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    pub_type: 杂志文章


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