[Long-term sedation with propofol in ICU: hemocoagulation problems].

The Authors have studied the effects of propofol on coagulation in 15 patients admitted to ICU. Propofol was used for long-term sedation (therapeutic range 3 mg/kg/h). Variables monitored included: platelets, PTT, PT, Fibrinogen, FDP, AT III.

Exogenous glutathione increases endurance to muscle effort in mice.

Many data suggest an involvement of toxic oxygen radicals in the termination of endurance to muscle fatigue. Being reduced glutathione (GSH), an efficient intracellular physiological antioxidant, experiments have been performed to discover whether exogenous GSH modifies endurance to exhaustive swimming in mice. GSH was administered to mice as a single dose (250, 500, 750 or 1000 mg/kg i.

Spin-trappers and vitamin E prolong endurance to muscle fatigue in mice.

The involvement of free radicals in endurance to muscle effort is suggested by experimental and clinical data. Therefore, experiments have been performed to observe the effect of trapping free radicals on endurance to swimming in mice. Animals were injected intraperitoneally with each of three spin-trappers [N-tert-Butyl-alpha-Phenyl-Nitrone (PBN),alpha-4-Pyridyil-1-Oxide-N-tert-Butyl-Nitrone (POBN) and 5,5-Dimethyl-1-Pirrolyn-N-Oxide (DMPO): 0.