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- W2085968651 abstract "Background and Purpose —Endothelins (ETs) are potent vasoconstrictors and may play a role in the pathophysiology of several diseases. Limited and controversial data exist on their role in human ischemic stroke. We planned a prospective, observational, and longitudinal clinical study to test whether ET-1 levels increase in various phases of ischemic stroke and whether the ET-1 levels correlate with neurological scores, stroke etiology, stroke risk factors, or final outcome. Methods —We measured plasma ET-1 levels with a sandwich-enzyme immunoassay method in 101 consecutive patients with ischemic stroke on admission and 1 week, 1 month, and 3 months after stroke and in 101 sex- and age-matched control subjects. At each sampling, the patients underwent a complete neurological evaluation. All stroke risk factors were recorded, an array of laboratory tests were performed, and the subtype of ischemic stroke was determined. The patients were contacted 3 years later for prognostic determination. Results —ET-1 levels in patients (2.4±1.3 pg/mL on admission, 2.2±1.4 pg/mL at 1 week, 2.1±1.4 pg/mL at 1 month, and 2.1±1.2 pg/mL at 3 months) were not different from those of the control subjects (2.2±0.9 pg/mL) at any time point. No correlation was found between the ET-1 levels and stroke etiology, stroke risk factors, stroke recurrence risk, age, sex, or neurological scores, except that ET-1 levels correlated with the use of warfarin and with body mass index. Conclusions —Plasma ET-1 levels were normal in patients with ischemic stroke. Our findings cannot exclude a role of ETs in the pathophysiology of ischemic stroke because plasma levels might not accurately reflect intracerebral concentrations, but they also do not support the occurrence of a major plasma ET-1 level increase at any phase of stroke. Our patient population is the largest ever reported in whom ET-1 levels were measured, but it consisted of mild and moderately ill patients with stroke due to the study design, of which the aim was long-term observation, which excludes severely ill patients." @default.
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- W2085968651 date "2000-03-01" @default.
- W2085968651 modified "2023-10-16" @default.
- W2085968651 title "Plasma Endothelin-1 Levels Neither Increase nor Correlate With Neurological Scores, Stroke Risk Factors, or Outcome in Patients With Ischemic Stroke" @default.
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- W2085968651 doi "https://doi.org/10.1161/01.str.31.3.720" @default.
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