Plasma uric acid concentrations are reduced by fenofibrate: A systematic review and meta-analysis of randomized placebo-controlled trials

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Abstract

Background

Hyperuricaemia increases the risk of gout, but it is also a risk factor for cardiovascular diseases.

Purpose

To conduct a systematic review and meta-analysis of relevant randomized clinical trials to ascertain the effect size of fibrates in modulating plasma uric acid concentrations.

Data sources

Medline (http://www.ncbi.nlm.nih.gov/pubmed), SCOPUS, Web of Science and Google Scholar databases were searched.

Study selection

Studies were included if they met the following inclusion criteria: (i) being a randomized placebo-controlled trial with either parallel or cross-over design, (ii) investigating the impact of fibrate therapy on plasma uric acid concentrations, (iii) presentation of sufficient information on uric acid values at baseline and at the end of follow-up in each group or providing the net change values.

Data extraction

The following data were extracted: (1) first author’s name; (2) year of publication; (3) study location; (4) study design; (5) number of participants in the fibrate and placebo groups; (6) type and dose of fibrate; (7) duration of treatment; (8) age, gender and body mass index (BMI) of study participants; (9) baseline levels of total cholesterol, low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), triglycerides, high-sensitivity C-reactive protein (hs-CRP) and glucose; (10) systolic and diastolic blood pressure; and (11) data regarding baseline and follow-up uric acid.

Data synthesis

There was a significant reduction in plasma uric acid concentrations following fenofibrate therapy.

Limitations

Few eligible studies, and most had small population sizes.

Conclusions

Fenofibrate, but not bezafibrate is effective in reducing serum acid uric levels.

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