Semax Dosing Protocol: Cognitive Research Guide

Although preclinical studies are promising, there is a current lack of clinical trials. This review integrates current mechanistic insights with orthopaedic relevance, emphasizing safety, efficacy, and future directions for responsible integration into musculoskeletal care.

Limitations: No placebo control reported. Review article — no new primary data.

Semax improved SCI functional recovery and inhibited LMP-related pyroptosis in SCI mice and neuroinflammation models, by decreasing oxidative stress. RNA-seq and other analyses found that Semax regulated the ubiquitin specific protease USP18.

Limitations: Animal study only — human translation uncertain.

3774 DEGs (fold change > 1.5 and Padj < 0.05) were identified under ischemia conditions, whereas 1539 and 2066 DEGs were revealed under Semax and ACTH(6-9)PGP peptides at 24 h after tMCAO. Furthermore, both peptides significantly reduced expression distortions caused by ischemia for 1171 genes associated with immune and neurosignaling pathways.

Limitations: Animal study only — human translation uncertain.

Furthermore, gene enrichment analysis was carried out, and a regulatory gene network was constructed. Thus, the spectra of the common and unique effects of the PGP, PGPL, and Semax peptides under ischemia-reperfusion were distinguished.

Limitations: Animal study only — human translation uncertain.

Semax exerts a favourable effect on behaviour and biogenic amine system of rats exposed to the antidepressant. Thus, peptide Semax can prevent behavioural deficits caused by altered 5-HT levels during development.

Limitations: Animal study only — human translation uncertain.

Between-group alongwith between-condition differences were revealed in FC between the right amygdala and a region in fusiform, inferior and middle temporal as well as parahippocampal gyri in the right hemisphere. Post hoc analysis allowed us to define both general and specific effects of Selank and Semax on FC between the right amygdala and the right temporal cortex for the first time.

Limitations: Standard limitations apply. Check original paper for full discussion.

Anti-herpethetical drug "Panavir" shows pronounced neuroprotective properties. The purpose of this review is to analyze the experimental and clinical data related to central effects of drugs with antiviral or/and immunotropic activity, and to discover the relationship of these effects with changes in reactivity of immune system and proinflammatory response.

Limitations: No placebo control reported. Review article — no new primary data.

Administration of semax, regardless of the timing of rehabilitation, increased BDNF plasma levels which remained high during the whole study period. In semax- subgroups high BDNF plasma levels were positively correlated with early rehabilitation.

Limitations: No placebo control reported.

A greater volume of the default mode network rostral (medial frontal cortex) subcomponent was detected in the Semax group in comparison with controls. Resting state fMRI confirmed Semax effects on the neuronal network of the brain and demonstrated topography of these effects.

Limitations: Standard limitations apply. Check original paper for full discussion.

High similarity between the effects of Ttr and coupled molecular systems with the Semax effects in ischemic stroke allowed us to suggest that the neuroprotection mechanisms of Semax (and, possibly, of other neuroprotection mechanisms of Semax) could be mediated by Ttr. In this review, we discussed the role of Ttr in CNS and its possible role in the neuroprotection mechanism of Semax.

Limitations: No placebo control reported. Review article — no new primary data.

So the intermolecular interactions of these peptides with plasma membranes of neuronal brain targets are probably not limited by specific binding at orthosteric sites. The effect of peptides that act in the synacton considerably extends the regulatory potential of the initial molecule.

Limitations: Animal study only — human translation uncertain.

Moreover, a punctuate distribution of Zn(II) within the cells suggests a preferred subcellular localization that might explain the zinc toxic effect. A future perspective can be the use of Ac-Semax as ionophore in antibody drug conjugates to produce a dysmetallostasis in tumor cells.

Limitations: No placebo control reported.

The gene-expression alteration caused by the action of the peptide Semax was compared with the gene expression of the "ischemia" group animals at 3 and 24 h after permanent middle cerebral artery occlusion (pMCAO). The peptide predominantly enhanced the expression of genes related to the immune system.

Limitations: Animal study only — human translation uncertain.

The peptide failed to affect the animal pain sensitivity following intranasal administration as opposed to intraperitoneal administration. The data obtained suggest different mechanisms and brain structures involved in realization of the nootropic and analgesic effects of Semax.

Limitations: Animal study only — human translation uncertain.

PGP enhanced the transcription of Bdnf and TrkC 3 h after pMCAO and Ngf, TrkB, TrkC, and TrkA 24 h after pMCAO. The analysis of the transcription alterations under PGP and Semax treatment in the cortex of rats without surgery, sham-operated rats and rats subjected to pMCAO revealed that Semax selectively affected the transcription of neurotrophins and their receptors in the ischemic rat cortex, whereas the influence of PGP was mainly unspecific.

Limitations: Animal study only — human translation uncertain.

The primary cerebral mechanisms of emotional stress and the role played by neuromediators and neuropeptides are discussed. Dynamics of impairment of various functional systems under stressful conditions is discussed with special emphasis on individual tolerance to emotional stress and the role of oligopeptides (substance P), delta sleep inducing peptide, beta-endorphin and semax as antistress factors increasing resistance to stressful impacts.

Limitations: No placebo control reported. Review article — no new primary data.

It was shown that chronic Semax administration at 1-2 weeks induced anxiolytic and antidepressant effects but did not influenced the exploratory activity in non-stressogenic environment. The Semax effects may be the results of activation of the brain serotoninergic system as well as increased BDNF expression in the rat hippocampus.

Limitations: Animal study only — human translation uncertain.

The splitting away of ME and GP, and formation of pentapeptides are the predominant processes in the presence of all tested objects, whereas the difference in patterns of resulting peptide products for glial and neuronal cells has been detected. In conclusion, the approach applied allows analyzing physiologically active peptide concentrations in biological tissues and degradation pathways of peptides in the presence of targets of their action.

Limitations: Animal study only — human translation uncertain.

Semax injected 20 min prior D: -amphetamine dramatically enhanced the effects of the latter on the extracellular level of dopamine and on the locomotor activity of animals. Our results reveal the positive modulatory effect of Semax on the striatal serotonergic system and the ability of Semax to enhance both the striatal release of dopamine and locomotor behavior elicited by D-amphetamine.

Limitations: Animal study only — human translation uncertain.

These results point to the presence of specific binding sites for Semax in the rat basal forebrain. In addition, these findings indicate that the cognitive effects exerted by Semax might be associated, at least in part, with increased BDNF protein levels in this brain region.

Limitations: Animal study only — human translation uncertain.

Furthermore, the peptide adminictration at all times diminished anxiety and improved learning ability of adult rats. The data obtained show that Semax neonatal administration during the first three weeks of life modulates development of brain structures involved in regulation of exploration, anxiety and learning.

Limitations: Animal study only — human translation uncertain.

The substitution of methionine with glycine, threonine, or alanine caused a complete loss of the neotropic activity of the peptide. Therefore, the amino acid residue located at position 1 of the heptapeptide analogue semax, plays a key role in retaining the neotropic effects of the peptide and determines the degree of their expression.

Limitations: Animal study only — human translation uncertain.

Daily intranasal administration of Semax at a dose of 0.2 mg/kg decreased the severity of MPTP-induced behavioral disturbances. The protective activity of Semax in MPTP-induced lesions of the brain dopaminergic system may be associated with both its modulating effect on the dopaminergic system and the neurotrophic action of the peptide.

Limitations: Animal study only — human translation uncertain.

Mechanisms of glycoprolines activities and feasibility of their administration with connective tissue food proteins are discussed. Thus, glyprolines are perspective drugs for treatment of gastric ulcer, correction of hemostasis and thrombosis suppression prepared for preclinical trial.

Limitations: No placebo control reported. Review article — no new primary data.

Experiments on narcotized rats showed that Semax in the studied dose had no effect on basal blood flow in the stomach, but prevented reduction of blood flow induced by indomethacin. The antiulcer effect of Semax is probably related to improvement of blood flow in the gastric wall disturbed by indomethacin.

Limitations: Animal study only — human translation uncertain.