[The lipid profile in patients with obesity who have undergone vertical gastroplasty].

The effect of vertical banded gastroplasty (VBG) on the lipid profile in obese patients is considered. The antiatherogenic effect of VBG and of the following weight loss consists in significantly decreased plasma triglycerides, increased content of high-density lipoproteins and decreased atherogenic coefficient. Patients with hypercholesterolemia have significantly lower total plasma cholesterol by the period of the body mass stabilization.

[A new method for urea detection in biological fluids].

A modified urease hypochlorite method for measuring urea in biological fluids is described. Its novel feature is the use of 4-hydroxycoumarin as ammonia acceptor. This compound has never been used for this purpose, and it has a number of advantages over traditional phenol and its derivatives: the measurement is performed in just two steps, the compound is nontoxic and used in low concentrations, and the accuracy of measurements is higher due to decrease of the systemic error.