The effects of dopaminergic mediation upon colloidopectic activity of the mononuclear phagocyte system.

The investigations were carried out on 30 Wistar albino male rats. A group of animals received Levodpa (Nakom), another group received Methyldopa (Dopegyt). One and a half hour after administration, the phagocytic activity was measured using colloidal carbon.

Effect of magnesium sulfate on learning, emotivity and spontaneous motility in rats.

The study was performed on three groups, each including 10 male Wistar rats, weighing 110-130 g: group 1, the control group; group 2, animals treated with magnesium sulfate in a dose of 100 mg/kg body/day i.m.; group 3, animals treated with double dose of magnesium sulfate (200 mg/kg body/day i.

The effects of near null magnetic field upon the leucocyte response in rats.

Wistar rats were kept for 2 and 4 weeks in conditions of near null magnetic field. The total serum proteins, lipids and glucides, as well as the leucocyte and neutrophil counts showed no significant changes against controls kept in natural magnetic field conditions. A significant monocytosis, a decrease in the circulating phagocyte count and in the phagocytic activity was noticed in null magnetic field.

The effect of reduced glutathione (TAD-600) on the behavior of rats neonatally intoxicated with ethanol.

The study was performed on three groups of male rats of the Wistar strain at the age of three months: group 1 (n = 10), the control group; group 2 (n = 10), consisting of animals treated neonatally (from day 4 through day 10) with ethanol 20%, administered by gavage to the mothers, at the dose of 5 g/kg body/day; group 3 (n = 10) of animals exposed to ethanol under similar conditions, but whose mothers have been injected a reduced glutathione (TAD-600) solution in a dose of 2 mg/100 g body weight of the mother. All the animals were weight ed before the test of behavior. The neonatal administration of ethanol caused ponderal weight retardation, which was not influenced by TAD-600 administrations.

The control of erythropoiesis (Romanian contributions).

The main contributions of a Romanian team, headed by I. Baciu, in the field of the control of erythropoiesis are presented. The role of the central nervous system in the regulation of erythrocytes production and the identification of chemoreceptors sensitive to hypoxia in the central nervous system are disclosed.