Urinary excretion and serum concentration of mevalonic acid during acute intake of alcohol

The influence of 2 different alcoholic beverages containing an equal amount of alcohol (48 g), 1 with mevalonic acid (beer) and 1 without (vodka), on the urinary excretion and serum concentration of mevalonic acid was investi gated in 7 healthy subjects. Drinking 1 L of beer at night containing 608 m u g/L mevalonic acid more than doubled the urinary excretion of mevalonic a cid the following 12 hours, on average from 103 +/- 15 mu g/12 h to 211 +/- 17 mu g/12 h (P < .001; 18% of the administered dose). Drinking the same a mount of alcohol as vodka had no effect, but urinary mevalonic acid output increased slightly the following day (7 AM to 7 PM) after ingestion of both alcoholic beverages. Serum concentrations of mevalonic acid were significa ntly increased the following morning after ingestion of beer (from 3.22 +/- 0.20 ng/mL to 6.79 +/- 0.58 ng/mL) or vodka (from 3.23 +/- 0.37 ng/mL to 5 .36 +/- 0.55 ng/mL, P < .002 for both). An increase in the ratio of lathost erol to cholesterol in serum, another indicator of 3 beta-hydroxy-3 beta-me thylglutaryl coenzyme A reductase activity in the liver, was also observed (+18% and +25%, respectively). After oral administration of [C-13(2)] meval onic acid at night, 20% +/- 0.7% of the dose was excreted in urine the foll owing 12 hours, and only trace amounts thereafter. No [C-13(2)] mevalonic a cid could be detected in serum the following morning, We conclude that the absorption of dietary mevalonic acid and alcohol-induced mevalonic acid syn thesis affects the urinary excretion and serum concentration of this choles terol precursor. Therefore, studies using mevalonic acid as a marker of cho lesterol synthesis must be carefully monitored regarding dietary mevalonic acid intake and alcohol consumption. Copyright (C) 2000 by W.B. Saunders Co mpany.