Several studies are present in the literature about the efficacy of medical treatment with biliary
acid, orally administered, on the symptomatic
gallstone patients. Both this drugs act, with different mechanisms, on the same pathophysiological pathway, represented by the supersaturated bile in
cholesterol. Aim of the present investigation was to study the possible modifications of serum
bile acids pattern and of
lipoproteins in a large sample of
gallstone patients under long-term treatment with biliary
acids. One hundred and twelve patients with radiolucent
gallstones entered the study; 54 received
chenodeoxycholic acid (CDCA) and 58 ursodeoxycholic (UDCA) at dosage of 15 mg/kg/daily. Blood samples for determination of serum
cholesterol,
triglycerides,
phospholipids,
lipoproteins, total and fractionated biliary
acids were collected from each subjects every three months for a mean "follow-up" of 24 months. The levels of serum
cholesterol,
triglycerides and
phospholipids showed a mild decrease only in the patients under
therapy with CDCA, while no modifications were detected using UDCA. The same was found for two other parameters,
HDL-cholesterol and
lipoproteins, with both treatments during the overall period of follow-up. The biliary
acids levels showed a significant increase only in the patients treated with CDCA, but no differences were found between "responders" and "non responders" to the
therapy.