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S N Kolbaev, O P Aleksandrova, I N Sharonova, V G Skrebitsky
A neuroprotective and nootropic drug Noopept increased the frequency of spontaneous calcium transients in neurons of CA1 radial layer in cultured rat hippocampal slices. In contrast, the drug exerted no significant effect on intracellular calcium concentration and its dynamics in neurons of hippocampal CA1 pyramidal layer.
January 2018: Bulletin of Experimental Biology and Medicine
T A Antipova, S V Nikolaev, P U Ostrovskaya, T A Gudasheva, S B Seredenin
Effect of noopept (N-phenylacetyl-prolylglycine ethyl ester) on viability of neurons exposed to neurotoxic action of glutamic acid (5 mM) was studied in vitro in immortalized mouse hippocampal HT-22 neurons. Noopept added to the medium before or after glutamic acid improved neuronal survival in a concentration range of 10-11-10-5 M. Comparison of the effective noopept concentrations determined in previous studies on cultured cortical and cerebellar neurons showed that hippocampal neurons are more sensitive to the protective effect of noopept...
May 2016: Bulletin of Experimental Biology and Medicine
Y V Vakhitova, S V Sadovnikov, S S Borisevich, R U Ostrovskaya, T A Gudasheva, S B Seredenin
This study was performed in order to reveal the effect of Noopept (ethyl ester of N-phenylacetyl-Lprolylglycine, GVS-111) on the DNA-binding activity of transcriptional factors (TF) in HEK293 cells transiently transfected with luciferase reporter constructs containing sequences for CREB, NFAT, NF-κB, p53, STAT1, GAS, VDR, HSF1, and HIF-1. Noopept (10 μM) was shown to increase the DNA-binding activity of HIF-1 only, while lacking the ability to affect that of CREB, NFAT, NF-κB, p53, STAT1, GAS, VDR, and HSF1...
January 2016: Acta Naturae
I S Povarov, R V Kondratenko, V I Derevyagin, R U Ostrovskaya, V G Skrebitskii
Application of nootropic agent Noopept on hippocampal slices from Wistar rats enhanced the inhibitory component of total current induced by stimulation of Shaffer collaterals in CA1 pyramidal neurons, but did not affect the excitatory component. A direct correlation between the increase in the amplitude of inhibitory current and agent concentration was found. The substance did not affect the release of inhibitory transmitters from terminals in the pyramidal neurons, which indicated changes in GABAergic interneurons...
January 2015: Bulletin of Experimental Biology and Medicine
Rita U Ostrovskaya, Yulia V Vakhitova, Uliyana Sh Kuzmina, Milyausha Kh Salimgareeva, Liana F Zainullina, Tatiana A Gudasheva, Vener A Vakhitov, Sergey B Seredenin
BACKGROUND: Noopept (N-phenyl-acetyl-L-prolylglycine ethyl ester) was constructed as a dipeptide analog of the standard cognition enhancer, piracetam. Our previous experiments have demonstrated the cognition restoring effect of noopept in several animal models of Alzheimer disease (AD). Noopept was also shown to prevent ionic disbalance, excitotoxicity, free radicals and pro-inflammatory cytokines accumulation, and neurotrophine deficit typical for different kinds of brain damages, including AD...
August 6, 2014: Journal of Biomedical Science
R U Ostrovskaya, N N Zolotov, I V Ozerova, E A Ivanova, I G Kapitsa, K V Taraban, A M Michunskaya, T A Voronina, T A Gudasheva, S B Seredenin
Experiments on adult Wistar rats with streptozotocin-induced diabetes showed that antihyperglycemic activity of an original nootropic and neuroprotective drug Noopept (N-phenylacetyl-L-prolylglycine ethyl ester) is more pronounced under conditions of oral application than after intraperitoneal injection. These data provided a basis for studying the effect of Noopept on major indexes of the incretin system. Streptozotocin was shown to decrease the concentrations of incretin GLP-1 and insulin in the blood. Noopept had a normalizing effect on these parameters...
July 2014: Bulletin of Experimental Biology and Medicine
R U Ostrovskaya, I V Ozerova, T A Gudascheva, I G Kapitsa, E A Ivanova, T A Voronina, S B Seredenin
Developing diabetes was modeled on adult male Wistar rats by repeated intraperitoneal injections of streptozotocin in a subdiabetogenic dose of 30 mg/kg for 3 days. Proline-containing dipeptide drug Noopept or a standard diabetic drug dipeptidyl peptidase-4 inhibitor sitagliptin was administered per os in a dose of 5 mg/kg before each injection of the toxin and then for 16 days after streptozotocin course. In active control group, spontaneously increase glucose level and reduced tolerance to glucose load (1000 mg/kg intraperitoneally) were observed on the next day after the third administration of toxin...
January 2014: Bulletin of Experimental Biology and Medicine
Vik V Iasnetsov, I N Krylova
It has been established in experiments in rats that some nootropic substances (oxyracetam, aniracetam, nooglutil, mexidol, new 3-hydroxypyridine derivative SK-170, piracetam and noopept) produce marked antiamnestic effect on various models of amnesia (induced by microwave irradiation, acute hypoxia, and motion sickness). At the same time, meclophenoxate exhibited antiamnestic effect in the first and second models of amnesia, while 9-aminoacridine derivative HTOS-404 was only effective in the model of amnesia caused by microwave irradiation...
2013: Eksperimental'naia i Klinicheskaia Farmakologiia
R U Ostrovskaya, I V Ozerova, T A Gudascheva, I G Kapitsa, E A Ivanova, T A Voronina, S B Seredenin
We studied the effects of new nootropic and neuroprotective drug Noopept (N-phenylacetyl-L-prolylglycine ethyl ester) in various dosage regimens on the dynamics of glycemia, body weight, and pain sensitivity in rats receiving diabetogenic toxin streptozotocin. In experimental diabetic rats, Noopept alleviated glycemia and weight loss and normalized enhanced pain sensitivity. The normalizing effect of Noopept was most pronounced when it was administered as a preventive agent prior to injection of the toxin. Both preventive and therapeutic administration of Noopept (delayed injections included) significantly weakened the examined metabolic effects of diabetogenic toxin...
January 2013: Bulletin of Experimental Biology and Medicine
S V Alekseeva, L P Kovalenko, A V Tallerova, T A Gudasheva, A D Durnev
The anti-inflammatory effects of noopept (dipeptide analog of piracetam) upon a single intraperitoneal (i.p.) administration at doses of 1, 5, and 10 mg/kg in comparison to the reference drug diclofenac (10 mg/kg, i.p.) have been studied on a model of acute exudative inflammation induced by carrageenan in outbred rats and concanavalin A (Con A) in CBA mice. The level of cytokines was studied on the lipopolysaccharide (LPS) model (single administration, 100 mg/kg, i.p.) with 5-day administration of noopept at a dose of 5 mg/kg (i...
2012: Eksperimental'naia i Klinicheskaia Farmakologiia
E V Vasil'eva, R M Salimov, G I Kovalev
Exploratory behavior, locomotor activity, and anxiety in inbred mice of C57BL/6 and BALB/c strains subchronically treated with placebo or various types of nootropic (cognition enhancing) drugs (piracetam, phenotropil, noopept, semax, pantogam, nooglutil) have been evaluated using the exploratory cross-maze test. It was found that BALB/c mice in comparison to C57BL/6 mice are characterized by greater anxiety and lower efficiency of exploratory behavior in the previously unfamiliar environment. All tested drugs clearly improved the exploratory behavior in BALB/c mice only...
2012: Eksperimental'naia i Klinicheskaia Farmakologiia
V I Zhiliuk, A É Levykh, V I Mamchur
The effects of nootropic drugs (noopept, pentoxifylline, piracetam, pramiracetam, Ginkgo biloba extract, entrop, cerebrocurin and citicoline) on platelet aggregation in rats with experimental diabetes have been studied. It is established that all these drugs exhibit an inhibitory action of various degrees against platelet hyperreactivity under conditions of chronic hyperglycemia. The maximum universality of the antiaggregatory action is characteristic of pramiracetam, entrop and Ginkgo biloba extract.
2012: Eksperimental'naia i Klinicheskaia Farmakologiia
A V Amelin, A Iu Iliukhina, A A Shmonin
Noopept is a neuroprotector and nootropics. Literature data revealed the treatment effect of noopept on mild cognitive impairment in patients with discirculatory encephalopathy. The present open prospective study included 60 patients with stroke treated with noopept during 12 months. Cognitive functions were assessed before and after treatment using neuropsychological tests. An analysis of MMSE scores and lateral and categorical associations revealed the significant improvement of cognitive functions after 2 months in patients of the main group compared to the controls...
2011: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
V G Skrebitskiĭ, R V Kondratenko, I S Povarov, V I Dereviagin
Effects of two newly synthesized nootropic and anxiolytic dipeptides: Noopept and Selank on inhibitory synaptic transmission in hippocampal CA1 pyramidal cells were investigated using patch-clamp technique in whole-cell configuration. Bath application of Noopept (1 microM) or Selank (2 microM) significantly increased the frequency of spike-dependent spontaneous m1PSCs, whereas spike-independent mlPSCs remained unchanged. It was suggested that both peptides mediated their effect sue to activation of inhibitory interneurons terminating on CA1 pyramidal cells...
November 2011: Rossiĭskii Fiziologicheskiĭ Zhurnal Imeni I.M. Sechenova
M A Iarkova
The level of specific 3H-flunitrazepam binding in synaptosomal membranes of C57BL/6 and BALB/c mice brain underwent to the stress of different types has been studied. Mild stress (Elevated Plus Maze) was shown to induce the decrease of benzodiazepine binding in BALB/c mice only, while the strong one (Exposure to a predator) was revealed to cause this decrease in both strains. Behavioral effects of different non-benzodiazepine drugs possessing anxiolytic properties (Afobazol, Ladasten and Noopept) was accompanied with the normalization of the level of benzodiazepine reception, reduced by the stress of both modalities...
2011: Eksperimental'naia i Klinicheskaia Farmakologiia
Xueen Jia, Anna L Gharibyan, Anders Öhman, Yonggang Liu, Anders Olofsson, Ludmilla A Morozova-Roche
Parkinson's disease is a common neurodegenerative disorder characterized by α-synuclein (α-Syn)-containing Lewy body formation and selective loss of dopaminergic neurons in the substantia nigra. We have demonstrated the modulating effect of noopept, a novel proline-containing dipeptide drug with nootropic and neuroprotective properties, on α-Syn oligomerization and fibrillation by using thioflavin T fluorescence, far-UV CD, and atomic force microscopy techniques. Noopept does not bind to a sterically specific site in the α-Syn molecule as revealed by heteronuclear two-dimensional NMR analysis, but due to hydrophobic interactions with toxic amyloid oligomers, it prompts their rapid sequestration into larger fibrillar amyloid aggregates...
December 16, 2011: Journal of Molecular Biology
T A Gudasheva
The author describes an original approach to the development of dipeptide drugs based on the concept of the leading role of the beta-bend in the interaction of biologically active endogenous peptides with their receptors. The approach called "peptide-based drug design" includes both developments from the structure of a known psychotropic agent toward its topological peptide analog and developments from the active dipeptide site of a neuropeptide toward its mimetic. This strategy has been worked out at the V...
2011: Vestnik Rossiĭskoĭ Akademii Meditsinskikh Nauk
Iu Iu Firstova, E V Vasil'eva, G I Kovalev
The influence of nootropic drugs of different groups (piracetam, phenotropil, nooglutil, noopept, semax, meclofenoxate, pantocalcine, and dimebon) on the binding of the corresponding ligands to AMPA, NMDA, and mGlu receptors of rat brain has been studied by the method of radio-ligand binding in vitro. It is established that nooglutil exhibits pharmacologically significant competition with a selective agonist of AMPA receptors ([G-3H]Ro 48-8587) for the receptor binding sites (with IC50 = 6.4 +/- 0.2 microM), while the competition of noopept for these receptor binding sites was lower by an order of magnitude (IC50 = 80 +/- 5...
2011: Eksperimental'naia i Klinicheskaia Farmakologiia
Vasily Vorobyov, Vladimir Kaptsov, Georgy Kovalev, Frank Sengpiel
To study the effects of acute and repeated injections of nootropics and to learn how glutamate receptors might be involved in their mediation, the frequency spectra of cortical and hippocampal electroencephalogram (EEG) were analyzed in non-narcotized rats subcutaneously injected repeatedly with Piracetam (400mg/kg) or its analogue, Noopept (0.2mg/kg), after intracerebroventricular infusions of saline (5 μl) or the antagonists of NMDA and quisqualate/AMPA receptors: CPP (0.1 nmol) and GDEE (1 μmol), respectively...
May 30, 2011: Brain Research Bulletin
R U Ostrovskaia, Iu V Vakhitova, M Kh Salimgareeva, R S Iamidanov, S V Sadovnikov, I G Kapitsa, S B Seredenin
The influence of noopept (N-phenylacetyl-L-prolylglycine ethyl ester, GVS-111)--a drug combining the nootrope and neuroprotector properties--on the activity of mitogen-activated protein kinases (MAPKs) and the level of NGF and BDNF gene and protein expression in the frontal cortex, hippocampus, and hypothalamus has been studied in rats. Under conditions of chronic administration (28 days, 0.5 mg/day, i.p.), noopept decreased the activity of stress-induced kinases (SAPK/JNK 46/54 and pERK1/2) in rat hippocampus and increases the level of mRNA of the BDNF gene in both hypothalamus and hippocampus...
December 2010: Eksperimental'naia i Klinicheskaia Farmakologiia
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