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Serum uri acid: neuroprotection in thrombolysis. The Bergen NORSTROKE study

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Author(s): Logallo Nicola | Naess Halvor | Idicula Titto | Brogger Jan | Waje-Andreassen Ulrike | Thomassen Lars

Journal: BMC Neurology
ISSN 1471-2377

Volume: 11;
Issue: 1;
Start page: 114;
Date: 2011;
Original page

ABSTRACT
Abstract Background A possible synergic role of serum uric acid (SUA) with thrombolytic therapies is controversial and needs further investigations. We therefore evaluated association of admission SUA with clinical improvement and clinical outcome in patients receiving rt-PA, early admitted patients not receiving rt-PA, and patients admitted after time window for rt-PA. Methods SUA levels were obtained at admission and categorized as low, middle and high, based on 33° and 66° percentile values. Patients were categorized as patients admitted within 3 hours of symptom onset receiving rt-PA (rt-PA group), patients admitted within 3 hours of symptom onset not receiving rt-PA (non-rt-PA group), and patients admitted after time window for rt-PA (late group). Short-term clinical improvement was defined as the difference between NIHSS on admission minus NIHSS day 7. Favorable outcome was defined as mRS 0 - 3 and unfavorable outcome as mRS 4 - 6. Results SUA measurements were available in 1136 patients. Clinical improvement was significantly higher in patients with high SUA levels at admission. After adjustment for possible confounders, SUA level showed a positive correlation with clinical improvement (r = 0.012, 95% CI 0.002-0.022, p = 0.02) and was an independent predictor for favorable stroke outcome (OR 1.004; 95% CI 1.0002-1.009; p = 0.04) only in the rt-PA group. Conclusions SUA may not be neuroprotective alone, but may provide a beneficial effect in patients receiving thrombolysis.

Tango Jona
Tangokurs Rapperswil-Jona

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