Significance of thrombin-receptors of thrombocytes for the interaction of heparins and low-molecular-weight heparin in human whole blood clotting.

We describe in the present paper the results of the influence of normal and low-molecular-weight heparin on the interaction of human fibrinogen and thrombocytes in human whole blood cotting ex vivo. During the coagulation process sequential measurements of fibrinopeptide A reflect fibrin formation and determination of platelet factor 4 indicate activation of thrombocytes. The data show that low-molecular-weight heparin inhibits plasma thrombin generation in vivo for longer than normal heparin and it affects the fibrinogen platelet binding less.

Pharmacokinetics of the loop diuretic piretanide in renal failure.

Piretanide 60 mg was administered intravenously over 30 min to 15 men with different degrees of renal failure. The mean piretanide serum concentration at the end of the infusion period was 5.72 +/- 1.

A radioimmunoassay for determination of glibenclamide and other sulfonylureas.

An antiserum was prepared for the determination of glibenclamide and for the estimation of other commercially available sulfonylureas. Rabbits were immunized with a glibenclamide-BSA conjugate. Tritiated glibenclamide was used as the tracer.