The Intervention of Multi-vitamin With Minerals to Hyperuricemia

Effect of Multi-vitamins With Minerals on Uric Acid Metabolism in Subjects With Hyperuricemia: A Randomized, Double-blinded, Placebo-controlled Trail

To evaluate the validity of multi-vitamin-and-minerals intervention on uric acid metabolism in hyperuricemic adults.

Hyperuricemia is a type of metabolic diseases which caused by purine metabolic disorder and (or) uric acid excretion disorder. Uric acid is produced by cell metabolism and food purine metabolism as the end-point product. Excess alcohol and purine-rich food intake together with abnormal function of purine metabolic key enzyme are the main causes leading increasing serum level of uric acid. It has been a focus in nutritional area that a safer approach of preventing hyperuricemia by adjustment of nutritional intake. Primary studies found that proper supplement of microelements showed significant regulations in inflammation and oxidative stress induced by elevating level of uric acid. Therefore, this study will be conducted to test whether the supplement of multi-vitamins with minerals will lower the level of blood uric acid and improve the imbalance of microelement metabolism or not. The investigators will recruit 200 subjects of study who would be divided into four groups and accept intervention of high-dose multi-vitamins with minerals, low-dose multi-vitamins with minerals, hypouricemic tablets and placebo, respectively. After intervention of 3 or 6 months, serum uric acid and purine metabolism function will be detected. This study could provide references for illuminating the mechanism in purine metabolism and nutritional measures to control the pathological development of hyperuricemia.

Inclusion Criteria:

• Under the dietary pattern of normal intake of purine, the level of serum uric acid is higher than 420μmol/L for male or 360μmol/L for female (not be detected twice at the same day).

Exclusion Criteria:

• Gouty arthritis, tophus or gouty nephropathy.
• Complications including diabetes, cardiovascular diseases (angina, myocardial infarction) and so on.
• Taken hypouricemic medicine in the last week before intervention, including allopurinol, benzbromarone, probenecid and so on.
• Had an operation in the past year.
• Malnutrition or severe obesity, BMI<18.5kg/m2 or >30.0 kg/m2.
• Mental diseases, tumor, hepatic cirrhosis or other diseases that may interfere with the intervention.
• Alcohol abuse (>80g/d)