[Effect of M-and N-cholinolytics on the content of Ca2+ in synaptosomes and metabolism of phosphoinositols in the rat brain].

M-cholinolytics benactyzine and glypine increased a permeability of neurone membranes for Ca2+, producing the ion accumulation in synaptosomes. N-cholinolytic thropacin did not exhibit this effect and diphacyl caused similar to the M-cholinolytics but only slight effect on the Ca2+ content. The M-cholinolytics increased phosphoinositol turnover in rat brain, while the N-cholinolytics decreased its metabolism.

[Pharmacology of prooxen].

Prooxen--9-(3-dimethylaminopropyliden) xanthene--administered in small doses (0.05-0.1 mg/kg) produces a central and peripheral adrenosensibilizing effect, diminishes the duration of hexenal sleep, disturbs the differentiation, and causes appearance of intersignal reactions in experiments with conditioned reflexes.

[Participation of Mg2+ and Ca2+ ions and the corresponding ATPases in the mechanism of the presynaptic action of amisyl and arecoline].

Amisyle and arecoline were found to be antagonistic drugs in the effect on content of Mg2+ and Ca2+ and on activity of corresponding ATPases in synaptosomes isolated from rat brain. Amisyle promoted the incorporation of 45Ca into synaptosomes but arecoline inhibited the reaction. The appear to be responsible for liberation and maintaining of neurotransmitters in presinaptic stores.

Effects of some adrenergic blockers on the abstinence syndrome of addicts to drugs and alcohol.

Pyrroxand and butyroxan -- original drugs possessing hyghly selective alpha-adreno-blocking action at peripheral and central level-relieve symptoms of abstinence syndrome caused by narcotics and other addicting drugs. On the basis of these data it is suggested that adrenergic structures of the brain play a key role in eliciting the abstinence syndrome.

[Rat brain Mg2+-ATPase activity and Ca2+ and Mg2+ concentration in the presence of amizil and arecoline].

The effect of benactyzine (the central cholinolytic) in a dose of 40 mg/kg and arecoline (cholinomimetic) in a dose of 2.5 mg/kg on the activity of Mg2+-dependent ATP-ase and the content of Ca2+ and Mg2+ ions in the brain was studied in rats. It was shown that benactyzine and arecoline evoked a biphasic change in the activity of the enzyme and the electrolyte content.

[Adrenergic component in the hepatotropic, carcinogenic effect of diethylnitrosamine].

The effect of norepinephine, an adrenomietic drug, and of pyrroxane, its antagonist, on diethylnitrosoamine (DENA) hepatocarcinogenesis was studied in albino rats. Norepinephrine was found to stimulate carcinogenesis, whereas pyrroxane--to inhibit this process; the latter drug decreased the incidence of multicentric tumours of the liver. In vitro experiments on the isolated rat atria showed low DENA concentrations (1x10(-6) to 1x10(-8) M) to sensitize the atrium adrenoreceptors to the endogenous and exogenous norepinephrine.

[Effect of amizil and arecoline on the activity of Na, K-ATP-ase and concentration of Na+ and K+ ions in rat brain].

A study was made of the activity of Na, K-ATP-ase and the Na+ and K+ content in the brain of rats with the action of arecoline and amizyl. Both arecoline and amizyl increased the Na, K-ATP-ase activity. This could be associated with the changes in the redistribution of the Na+ and K+ ions in the nerve cell.

[Distribution of the adrenoblocking drug pyrroxan in the bodies of white rats].

The distribution of adrenoblocking drug pyrroxan in the blood plasma and different organs of albino rats had been studied. A rapid appearance of pyrroxan in the brain liver, kidneys, and other organs was shown; its selective accumulation in the hypothalamus was found. As revealed spectrofluorimetrically unchanged pyrroxan molecules disappeared from the plasma and the organs within 2 hours.

[The effect of M-cholinolytics on the lability of rabbit visual analyzer structures].

The influence of M-cholinolytics (amizyl, glipine, cyclozyl and 4-oxypiperidylbenzylate) in 0.01--10 mg/kg doses on EEG and photic driving in structures of the visual analyser was studied in experiments on twenty intact rabbits with chronically implanted electrodes in the optic chiasm, the optic tract, the lateral geniculate body and the visual cortex. All M-cholinolitics in the doses studied produced synchronization of the EEG.