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  • Oxford University Press (OUP)  (2)
  • Wakasa, Yutaka  (2)
  • 1
    In: Rheumatology, Oxford University Press (OUP), Vol. 61, No. 6 ( 2022-05-30), p. 2346-2359
    Abstract: Hyperuricaemia is recognized as an independent risk marker for cardiovascular and renal diseases. However, uric acid is a powerful free-radical scavenger, and the optimal level of serum uric acid (SUA) determining outcomes is unknown. This study explored whether interventional treatments for excessive SUA reduction were harmful and what constituted the optimal lowering of SUA levels for the prevention of events in patients with asymptomatic hyperuricaemia. Methods This was a post hoc analysis of a randomized trial (Febuxostat for Cerebral and CaRdiorenovascular Events PrEvEntion StuDy [FREED]) in which 1070 older patients with asymptomatic hyperuricaemia were enrolled and allocated to febuxostat (n = 537) or non-febuxostat treatment group (n = 533). We assessed the relationship between the endpoint (withdrawal or study completion) SUA levels and clinical outcomes. Primary endpoint was defined as a composite of all-cause mortality, cerebral and cardiorenovascular events. Results In the febuxostat group, patients achieving SUA levels ≤4 mg/dl (hazard ratio: 2.01 [95% CI: 1.05, 3.87]), & gt;4 to ≤5 mg/dl (2.12 [1.07, 4.20], & gt;6 to ≤7 mg/dl (2.42 [1.05, 5.60]), and & gt;7 mg/dl (4.73 [2.13, 10.5]) had significantly higher risks for a primary composite event than those achieving SUA levels & gt;5 to ≤6 mg/dl (P = 0.003 [log-rank test]). This J-shaped relationship applied to patients with renal impairment (P = 0.007 [Gray’s test] ) and was not significant in the non-febuxostat treatment group (P = 0.212 [log-rank test]). Conclusion Optimal SUA level by febuxostat treatment is 5–6 mg/dl for reducing all-cause mortality, cerebral, cardiovascular and renal events. Excessive SUA reduction may be harmful in older hyperuricaemic populations. Trial Registration ClinicalTrial.gov, https://clinicaltrials.gov, NCT01984749
    Type of Medium: Online Resource
    ISSN: 1462-0324 , 1462-0332
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2022
    detail.hit.zdb_id: 1474143-X
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  • 2
    In: European Heart Journal, Oxford University Press (OUP), Vol. 40, No. 22 ( 2019-06-07), p. 1778-1786
    Abstract: To compare the occurrence of cerebral, cardiovascular, and renal events in patients with hyperuricaemia treated with febuxostat and those treated with conventional therapy with lifestyle modification. Methods and results This multicentre, prospective, randomized open-label, blinded endpoint study was done in 141 hospitals in Japan. A total of 1070 patients were included in the intention-to-treat population. Elderly patients with hyperuricaemia (serum uric acid & gt;7.0 to ≤9.0 mg/dL) at risk for cerebral, cardiovascular, or renal disease, defined by the presence of hypertension, Type 2 diabetes, renal disease, or history of cerebral or cardiovascular disease, were randomized to febuxostat and non-febuxostat groups and were observed for 36 months. Cerebral, cardiovascular, and renal events and all deaths were defined as the primary composite event. The serum uric acid level at endpoint (withdrawal or completion of the study) in the febuxostat (n = 537) and non-febuxostat groups (n = 533) was 4.50 ± 1.52 and 6.76 ± 1.45 mg/dL, respectively (P  & lt; 0.001). The primary composite event rate was significantly lower in the febuxostat group than in non-febuxostat treatment [hazard ratio (HR) 0.750, 95% confidence interval (CI) 0.592–0.950; P = 0.017] and the most frequent event was renal impairment (febuxostat group: 16.2%, non-febuxostat group: 20.5%; HR 0.745, 95% CI 0.562–0.987; P = 0.041). Conclusion Febuxostat lowers uric acid and delays the progression of renal dysfunction. Registration ClinicalTrials.gov (NCT01984749).
    Type of Medium: Online Resource
    ISSN: 0195-668X , 1522-9645
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2019
    detail.hit.zdb_id: 2001908-7
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