It has been shown in experiments on anesthetized cats and dogs that lithium hydroxybutyrate produces antiarrhythmic action in central aconitic and strophanthine arrhythmias, prevents the development of ventricular fibrillation, and shows antiarrhythmic activity in strong occlusion on the coronary artery. The drug does not remove the atrial and aconitic patterns of arrhythmia. Lithium chloride also exhibits antiarrhythmic action in central aconitic arrhythmia, being inferior to lithium hydroxybutyrate. The drug does not influence central strophanthine arrhythmia and does not show antifibrillation activity.
Download full-text PDF |
Source |
---|
Bull Exp Biol Med
November 2016
Laboratory of General Pathology of Cardiorespiratory System, Research Institute of General Pathology and Pathological Physiology, Moscow, Russia.
Activities of superoxide dismutase and catalase characterizing antioxidant status of the nervous tissue and its resistance to free radical oxidation were measured in the brainstem of rats with hydroxybutyrate-induced pathological periodic breathing. Hydroxybutyrate modified the pro- and antioxidant status in the brainstem respiratory center. It markedly inhibited catalase activity; in rats without the signs of periodic breathing, hydroxybutyrate up-regulated superoxide dismutase activity and to a lesser extent increased the resistance of the membrane structures in the medulla oblongata to induction of free radical oxidation.
View Article and Find Full Text PDFIt is established that lithium is accumulated in the above-ground part of agrimony (Agrimoniapilosa L.), the aqueous extract of which exhibits lithium-specific chronobiological activity in rats. The chronobiological study was carried out during the winter solstice on 40 adult male rats divided into three groups: control (intact animals treated with purified water and the extract purified from lithium) and two test groups.
View Article and Find Full Text PDFBull Exp Biol Med
October 2010
Laboratory of Polysistemic Investigations, Laboratory of Pathophysiology of Respiration, Bioengineering Laboratory, Institute of General Pathology and Pathophysiology, Russian Academy of Medical Sciences, Moscow, Russia.
We studied changes in breathing pattern in nembutal-anaesthetized mongrel rats after administration of euphylline against the background of preliminary treatment with lithium hydroxybutyrate. Two types of external respiration responses to euphylline were observed; they depended on the initial blood pressure in systemic circulation and on its drop after euphylline administration. Thus, the reaction of the respiratory system to adenosine receptors blockade against the background of hydroxybutyrate pretreatment was associated with not only the effect of euphylline, but also the state of brain hemodynamics.
View Article and Find Full Text PDFBull Exp Biol Med
January 2006
Laboratory for Pathophysiology of Respiration, Laboratory of Bioengineering, Institute of General Pathology and Pathophysiology, Russian Academy of Medical Sciences, Moscow.
Acute experiments on narcotized rats showed that intravenous infusion of GABA derivative lithium hydroxybutyrate induced different changes in hemodynamic and respiratory parameters in animals with high and low resistance to hypoxia. Rats highly resistant to hypoxia better tolerated lithium hydroxybutyrate treatment compared to low resistant animals.
View Article and Find Full Text PDFThe role of gamma-hydroxybutyric acid (GHBA) and gamma-aminobutyric acid (GABA) in the mechanisms of respiratory arrest after systemic serotonin administration has been studied in anaesthetized outbred male rats. Under normal conditions, serotonin (5-HT) administration (20 - 60 microg/kg, i.v.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!