Semax

### Semax (Nootropic Research Peptide) Semax is a synthetic heptapeptide derived from a fragment of the adrenocorticotropic hormone (ACTH 4-10). It is extensively studied in neurobiological research for its potential neuromodulatory and neuroprotective properties. Unlike the parent ACTH molecule, Semax is engineered to be devoid of hormonal activity, instead functioning as a potent modulator of the central nervous system (CNS). Its primary mechanism of action involves the stimulation of Brain-Derived Neurotrophic Factor (BDNF) and Nerve Growth Factor (NGF) mRNA expression within the hippocampus and frontal cortex. By enhancing the synthesis of these neurotrophins, Semax serves as a critical tool in investigating neuronal plasticity, survival, and differentiation in various *in vitro* models. Beyond its neurotrophic influence, Semax demonstrates a complex pharmacological profile involving the modulation of the melanocortin system. Research suggests it acts as an agonist at melanocortin receptors (MCRs), specifically influencing the dopaminergic and serotonergic neurotransmitter systems. Laboratory investigations have focused on its ability to inhibit the breakdown of enkephalins and its potential to modulate the expression of genes involved in vascular endothelial growth factor (VEGF) signaling. These pathways make Semax a significant compound of interest in studies pertaining to neuroinflammation, ischemic recovery models, and the maintenance of the blood-brain barrier integrity in laboratory settings. For laboratory applications, Semax is typically provided as a lyophilized (freeze-dried) powder to ensure molecular stability. It should be stored at -20°C for long-term preservation; once reconstituted with sterile bacteriostatic water or phosphate-buffered saline (PBS), the solution should be refrigerated at 2°C to 8°C and utilized within a short timeframe to prevent proteolytic degradation. To maintain biological activity, researchers should avoid vigorous agitation or excessive freeze-thaw cycles. **This compound is strictly for in-vitro research and laboratory use only; it is not intended for diagnostic or therapeutic human applications.**