Search

The paper is the fundamental beginning of research series aimed at understanding the processes associated with high performance in higher animals. The research aim is to study correlation of dicarboxylic acid cycle with tricarboxylic acid cycle with establishment of activity and dislocation of enzymes, confirming the hypothesis of availability and active metabolic participation of peroxisome in highly productive animals. Research was conducted on the basis of the VNIIFBiP animal vivarium in 2019 with a group of piglets of the Irish Landrace breed (n = 10). After slaughter at the age of 210 days, the nuclear (with large tissue particles), mitochondrial and postmitochondrial fractions of the liver were studied with assessment of succinate dehydrogenase and activity of other dehydrogenes of the Krebs cycle. It was found that peroxisomes act as universal agents of communication and cooperation, and microtelets are able to generate various chemical signals that carry information, to control and arrange a number of mechanisms in the metabolic processes in the body. Despite the fact that the Krebs cycle dehydrogenases are considered mitochondrial enzymes, the experiment showed an increase in activity of priruvate dehydrogenase (P > 0.1), isocitrate dehydrogenase (0.1 > P > 0.05) and malate dehydrogenase (0.1 > P > 0.05), which, when comparing the mitochondrial and postmitochondrial fractions, indicates a higher activity of peroxisomal fractions. The peroxisome localization place is the postmitochondrial fraction, and the lower layer contains larger peroxisomes to a greater extent, while the upper layer contains smaller ones. It was found that indicator enzymes of glyoxylate cycle isocitratliase and malate synthase exhibit catalytic activity in the peroxisomal fraction of liver of highly productive pigs. The obtained data on functioning of key glyoxylate cycle enzymes and their intracellular compartmentalization in highly productive pigs allow learning more about the specifics of metabolism and its regulation processes. Application of this knowledge in practice opens up prospects for rationalizing the production of livestock products of increased quantity, improved quality with less feed, labor and financial resources spent.

Objectives. To study the neuroprotective properties of lithium ascorbate (LA) in in vivo and in vitro stress models. Materials and methods. Neurocytological and behavioral studies were run in models of stress in nerve cell cultures and experimental animals. Results. LA was shown to have a marked neuroprotective effect in conditions of glutamate-induced cytotoxicity in vitro and an adaptogenic effect on induction of stress in vivo. Conclusions. The results obtained here demonstrated that LA has high neuroprotective potential in stress induced in vivo and in vitro.

The results of the analysis of comparative studies of neurotrophic drugs based on brain hydrolysates (BH) are presented. The most comprehensive comparative study of the BH drugs carried out by Zhang, et al. 2019 investigated the effects of four drugs (cognistar, cerebrolysate, cortexin, cerebrolysin) on a model of ischemic stroke in rats. The study showed that a significant improvement in the neurological outcome compared with placebo was observed only with cerebrolysin. Higher standardization in elemental composition, higher antioxidant activity, and presence of active peptide fragments of neuropeptides of nerve growth factor, enkephalins, orexin and galanin in cerebrolysin explains neurotrophic and neuroprotective effects of the drug.Представлены результаты анализа сравнительных исследований нейротрофических препаратов на основе гидролизатов головного мозга. Наиболее полным сравнительным исследованием препаратов гидролизатов головного мозга является работа (Zhang, 2019), в которой исследованы эффекты четырех лекарственных препаратов (ЛП) - Когнистар, Церебролизат, Кортексин, Церебролизин - на модели ишемического инсульта у крыс. Результаты исследования продемонстрировали, что значительное улучшение показателей неврологического исхода по сравнению с плацебо отмечено только при использовании ЛП Церебролизин. Более высокая стандартизация по элементному составу, более высокая антиоксидантная активность и наличие активных пептидных фрагментов нейропептидов фактора роста нервов, энкефалинов, орексина, галанина в составе ЛП Церебролизин объясняют его нейротрофическое и нейропротекторное действие.