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https://www.readbyqxmd.com/read/29181670/anticoagulant-effects-of-arginine-containing-peptides-of-the-glyproline-family-his-phe-arg-trp-pro-gly-pro-and-thr-lys-pro-arg-pro-gly-pro-revealed-by-thromboelastography
#1
E Ya Rogozinskaya, M G Lyapina
Thromboelastography revealed anticoagulant effects of 3 glyproline oligopeptides (in various concentrations): His-Phe-Arg-Trp-Pro-Gly-Pro, Thr-Lys-Pro-Arg-Pro-Gly-Pro (Selank), and Pro-Gly-Pro. The parameters R, K, MA, S, TMA, and J changed to hypocoagulation direction in comparison to the control. At this, Selank demonstrated the maximal anticoagulation potency.
November 27, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29063333/studying-the-toxic-effects-of-some-biologically-active-peptides-on-the-model-of-mouse-embryonic-stem-cells
#2
A G Kobylyanskii, Yu A Zolotarev, L A Andreeva, I A Grivennikov, N F Myasoedov
We studied the effects of peptide drugs (HLDF-6, PGP, RPGP, and PGLP) and peptide pharmaceutical products (Semax, Selank, and thyroliberin) on proliferation and survival of mouse embryonic stem cells and their derivatives. Differentiation of mouse embryonic stem cells into neuronal precursors was evaluated. PGP and PGLP in concentrations of 10 and 0.1 μM, respectively, had little, but significant inhibitory effect on proliferative activity of cells. These peptides in concentrations of 10 and 0.1 μM, respectively, and Semax (10 and 0...
October 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28853100/effect-of-selank-on-functional-state-of-rat-hepatocytes-under-conditions-of-restraint-stress
#3
E V Fomenko, I I Bobyntsev, A A Kryukov, A V Ivanov, L A Andreeva, N F Myasoedov
We studied the effect of Selank administered intraperitoneally in doses of 100, 300, and 1000 μg/kg to male Wistar rats 15 min prior to restraint stress on the content of aminotransferases and total protein concentration in blood serum and intensity of free radical oxidation in the liver. Under conditions of acute restraint stress, Selank in doses of 100 and 300 μg/kg decreased catalase and superoxide dismutase activities and malondialdehyde concentration and increased total antioxidant activity in the liver homogenate...
August 29, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28702721/peptides-semax-and-selank-affect-the-behavior-of-rats-with-6-ohda-induced-pd-like-parkinsonism
#4
P A Slominsky, M I Shadrina, T A Kolomin, A V Stavrovskaya, E V Filatova, L A Andreeva, S N Illarioshkin, N F Myasoedov
Parkinson's disease (PD) is the second most common severe neurodegenerative disorder that is characterized by progressive degeneration of dopaminergic neurons (DA neurons) in the substantia nigra pars compacta (SNpc) region of the brain. In the present study, we investigated the effects of the synthetic regulatory peptides Semax (analog of an ACTH 4-10 fragment (ACTH4-10)) and Selank (analog of immunomodulatory taftsin) on behavior of rats with 6-hydroxidopamine (6-OHDA) induced PD-like parkinsonism. It was showed that both peptides did not affect motor activity of rats in elevated cross shaped maze and passive defensive behavior of the animals...
May 2017: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://www.readbyqxmd.com/read/28361410/effect-of-selank-on-spontaneous-synaptic-activity-of-rat-hippocampal-ca1-neurons
#5
I S Povarov, R V Kondratenko, V I Derevyagin, N F Myasoedov, V G Skrebitsky
Application of anxiolytic drug Selank to hippocampal slices increased the amplitude and discharge rate of spontaneous inhibitory postsynaptic currents in rat hippocampal pyramidal CA1 neurons. In some neurons, Selank-induced up-regulation of spontaneous inhibitory postsynaptic currents was preceded by a transient decrease in this activity. In the examined concentration range (1-8 μM), Selank demonstrated no significant dose-dependence.
March 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28293190/gaba-selank-and-olanzapine-affect-the-expression-of-genes-involved-in-gabaergic-neurotransmission-in-imr-32-cells
#6
Elena Filatova, Anastasiya Kasian, Timur Kolomin, Ekaterina Rybalkina, Anelya Alieva, Lyudmila Andreeva, Svetlana Limborska, Nikolay Myasoedov, Galina Pavlova, Petr Slominsky, Maria Shadrina
Clinical studies have shown that Selank had an anxiolytic effect comparable to that of classical benzodiazepine drugs, which can enhance the inhibitory effect of GABA by allosteric modulation of GABAA receptors. These data suggest that the molecular mechanism of the effect of Selank may also be related to its ability to affect the performance of the GABAergic system. To test this hypothesis, we studied the changes in expression of 84 genes involved in the functioning of the GABAergic system and in the processes of neurotransmission in the culture of neuroblastoma IMR-32 cells using qPCR method...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28280289/peptide-selank-enhances-the-effect-of-diazepam-in-reducing-anxiety-in-unpredictable-chronic-mild-stress-conditions-in-rats
#7
Anastasiya Kasian, Timur Kolomin, Lyudmila Andreeva, Elena Bondarenko, Nikolay Myasoedov, Petr Slominsky, Maria Shadrina
It was shown that the anxiolytic effect of Selank is comparable to that of classical benzodiazepine drugs and that the basis of their mechanism of action may be similar. These data suggest that the presence of Selank may change the action of classical benzodiazepine drugs. To test this hypothesis, we evaluated the anxiolytic activity of Selank and diazepam in rats both under conditions of unpredictable chronic mild stress and in its absence, after the individual and combined administration of these compounds using the elevated plus maze test...
2017: Behavioural Neurology
https://www.readbyqxmd.com/read/27878720/selank-inhibits-ethanol-induced-hyperlocomotion-and-manifestation-of-behavioral-sensitization-in-dba-2-mice
#8
L G Kolik, A V Nadorova, S B Seredenin
The effect of non-benzodiazepine anxiolytics on the ethanol-induced hyperlocomotion and behavioral sensitization was assessed in male DBA/2 mice. Selank that enhances activity of the endogenous opioid system (0.3 mg/kg, intraperitoneally), similar to the nonselective opiate receptor blocker naloxone (1.0 mg/kg, intraperitoneally), prevented the development of ethanol-induced (2.0 g/kg intraperitoneally) hyperlocomotion, in contrast to σ1-receptors agonist Afobazole (1.0 mg/kg, intraperitoneally) that did not inhibit ethanol-induced behavioral stimulation...
November 2016: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/26924987/selank-administration-affects-the-expression-of-some-genes-involved-in-gabaergic-neurotransmission
#9
Anastasiya Volkova, Maria Shadrina, Timur Kolomin, Lyudmila Andreeva, Svetlana Limborska, Nikolay Myasoedov, Petr Slominsky
Clinical studies have shown the similarity of the spectrum of physiological effects of Selank and classical benzodiazepines, such as diazepam and phenazepam. These data suggest that there is a similar basis of their mechanism of action. To test this hypothesis we studied the effect of Selank and GABA on the expression of genes involved in neurotransmission. We analyzed the expression of 84 genes involved in neurotransmission (e.g., major subunit of the GABA receptor, transporters, ion channels, dopamine, and serotonin receptors) in the frontal cortex of rats 1 and 3 h after the administration of Selank or GABA (300 μg/kg) using real-time PCR method...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/26356395/-optimization-of-the-treatment-of-anxiety-disorders-with-selank
#10
RANDOMIZED CONTROLLED TRIAL
V E Medvedev, O N Tereshchenko, N V Kost, A Yu Ter-Israelyan, E V Gushanskaya, I K Chobanu, O Yu Sokolov, N F Myasoedov
AIM: To compare the efficacy and tolerability of monotherapy with phenazepam to complex treatment with the peptide preparation selank and phenazepam in patients with anxiety disorders. MATERIAL AND METHODS: Authors explored the anxiolytic effect and tolerability of monotherapy with phenazepam (30 patients) and complex treatment with selank and phenazepam (40 patients) in anxiety-phobic, hypochondriac and somatoform disorders (ICD-10 items F40.2-9, F41.1-9, F45.0-2)...
2015: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/25850296/-effect-of-tripeptide-pro-gly-pro-on-rat-brain-transcriptome-in-focal-ischemia
#11
E V Medvedeva, V G Dmitrieva, O V Povarova, S A Limborskaia, V I Skvortsova, N F Miasoedov, L V Dergunova
Biologically active regulatory peptide, tripeptide Pro-Gly-Pro (PGP) was used as C-terminal fragment for peptide drugs Semax and Selank. In recent years the independent effects of PGP were observed. The question was raised, whether PGP contributes to the effects ofpeptide drugs containing PGP as a fragment. The genome-wide analysis was performed to investigate the influence of PGP on the transcriptome of ischemic rat brain cortex tissues. The gene expression alterations caused by the action of the tripeptide PGP were compared with the gene expression of the control group "ischemia" at 3 and 24 h after permanent occlusion of left middle cerebral artery...
March 2014: Molekuliarnaia Biologiia
https://www.readbyqxmd.com/read/25371249/the-influence-of-selank-on-the-parameters-of-the-hemostasis-system-lipid-profile-and-blood-sugar-level-in-the-course-of-experimental-metabolic-syndrome
#12
N F Mjasoedov, L A Andreeva, M E Grigorjeva, T Y Obergan, T A Shubina, L A Lyapina
No abstract text is available yet for this article.
September 2014: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://www.readbyqxmd.com/read/25176261/-a-comparison-of-the-anxiolytic-effect-and-tolerability-of-selank-and-phenazepam-in-the-treatment-of-anxiety-disorders
#13
COMPARATIVE STUDY
V E Medvedev, O N Tereshchenko, A Iu Israelian, I K Chobanu, N V Kost, O Iu Sokolov, N F Miasoedov
Objective. To study the efficacy and tolerability of the new anxyolytic peptide selank in comparison with phenazepam. Material and methods. A comparative study of the anxiolytic effect and tolerability of selank and phenazepam was carried out in 60 patients with phobic-anxiety- and somatoform disorders (F40.2-9, F41.1-9, F45.0-1 by ICD-10) were examined. Results Pronounced anxiolytic and mild nootropic effects of selank were demonstrated. The anxiolytic effect lasted for a week after last receiving the peptide...
2014: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/24913576/efficacy-of-peptide-anxiolytic-selank-during-modeling-of-withdrawal-syndrome-in-rats-with-stable-alcoholic-motivation
#14
L G Kolik, A V Nadorova, M M Kozlovskaya
We studied the effects of selank on the development of symptoms of acute 48-h alcohol withdrawal in outbred rats drinking 10 % ethanol as the only source of fluid for 24 weeks. In alcohol-preferring animals (mean daily ethanol intake >5.0 g/kg) allowed free choice between 10 % ethanol and water, single intraperitoneal injection of selank in a dose of 0.3 mg/kg eliminated anxiety induced by ethanol withdrawal in tests elevated plus maze and social interaction tests and prevented the formation of mechanical allodynia without affecting ethanol consumption...
May 2014: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/24605419/-protective-effect-of-selank-on-the-model-of-mnestic-function-violation-induced-by-pharmacological-blockade-of-protein-synthesis
#15
I I Kozlovskiĭ, F Iu Belozertsev, L A Andreeva, M M Kozlovskaia
We have studied the ability of peptide anxiolytic selank (Thr-Lyz-Pro-Arg-Pro-Gly-Pro) to compensate for mnestic dysfunction caused by the administration of actinomycin D, which inhibits protein synthesis by blocking DNA-dependent RNA polymerase. The experiments were performed on white rats with acquired adaptive ability of spatial visual orientation in a 16-door labyrinth. The learning was based on the avoidance of electric skin irritation at alternating sites of escape reaction (site reflex). Selank (0.5 mg/kg, i...
2013: Eksperimental'naia i Klinicheskaia Farmakologiia
https://www.readbyqxmd.com/read/24450168/-transcriptome-alteration-in-hippocampus-under-the-treatment-of-tuftsin-analog-selank
#16
T A Kolomin, T Iu Agapova, Ia V Agniullin, S I Shram, M I Shadrina, P A Slominskiĭ, S A Limborskaia, I F Miasoedov
The effect of single and course administration of Selank (Thr-Lys-Pro-Arg-Pro-Gly-Pro) in the dose 200 microg/kg on the rat hippocampus transcriptional profile were studied using cDNA microarray technology. It was shown that mRNA levels of 36 genes changed more than 2-fold after a single intranasal Selank administration, and 20 genes--after course administration. It should be noted that most of them encode proteins associated with the plasma membrane (including transmembrane proteins). This suggests that Selank is able to regulate ion homeostasis of hippocampal cells and thereby modulate different ion-dependent processes, which include the processes of learning and memory formation...
May 2013: Zhurnal Vyssheĭ Nervnoĭ Deiatelnosti Imeni I P Pavlova
https://www.readbyqxmd.com/read/24291245/the-temporary-dynamics-of-inflammation-related-genes-expression-under-tuftsin-analog-selank-action
#17
Timur Kolomin, Marina Morozova, Anastasiya Volkova, Maria Shadrina, Lyudmila Andreeva, Petr Slominsky, Svetlana Limborska, Nikolay Myasoedov
Previous studies have shown that synthetic tuftsin analogue Selank and its fragments cause a number of alterations in the expression of certain genes involved in inflammation in mouse spleen. In this work we studied the effect of Selank and its short fragment Gly-Pro on the temporary dynamics of C3, Casp1, Il2rg, and Xcr1 genes expression in mouse spleen after single intraperitoneal injection (100 μg/kg) of peptides using real-time PCR method. We found a significant 3-fold decrease in the C3 mRNA level just 30 min after Selank injection and similar alteration this gene mRNA level after Gly-Pro administration...
March 2014: Molecular Immunology
https://www.readbyqxmd.com/read/22827026/-effect-of-selank-on-the-main-carboxypeptidases-in-the-rat-nervous-tissue
#18
(no author information available yet)
Effect of single selank administration on activity of carboxypeptidase H and of phenylmethylsulfonylfluoride-inhibited carboxypeptidase - enzymes detaching arginine and lysine from C-terminus of molecules-precursors of biologically active peptides was studied. The preparation has been shown to cause long, preserved for 24 h changes of activities of these carboxypeptidases. It is suggested that the change in activity of the studied enzymes can be one of mechanisms of regulation of level of neuropeptides at action of selank...
May 2012: Zhurnal Evoliutsionnoĭ Biokhimii i Fiziologii
https://www.readbyqxmd.com/read/22550852/-the-role-of-opioid-system-in-peculiarities-of-anti-anxiety-effect-of-peptide-anxiolytic-selank
#19
I I Kozlovskiĭ, L A Andreeva, M M Kozlovskaia, A V Nadorova, L G Kolik
Peculiarities of the anxiolytic effects of selank (heptapeptide analog of taftsin) under reduced activity of opioid system upon acute administration of naloxone have been studied in BALB/C and C57BL/6 inbred mice with high and low levels of anxiety, with passive and active emotional stress reaction phenotypes in the open field (OF) test. Selank (0.25 mg/kg, i.p.) per se exhibited anxiolytic effect in BALB/C mice by increasing the general locomotor activity, with no effects on the behavior of C57BL/6 mice in the OF test...
2012: Eksperimental'naia i Klinicheskaia Farmakologiia
https://www.readbyqxmd.com/read/22390072/-peptidergic-modulation-of-the-hippocampus-synaptic-activity
#20
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
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