Description

Eterna Peptides presents premium-grade Semax (10mg) lyophilized powder, an elite synthetic analogue of the endogenous adrenocorticotropic hormone fragment $ACTH\text{(4-7)}$. Structurally optimized as a heptapeptide sequence (Met-Glu-His-Phe-Pro-Gly-Pro), Semax incorporates a stabilizing Pro-Gly-Pro tripeptide sequence at its C-terminus. This structural engineering drastically enhances its resistance to proteolytic degradation by central peptidases, exponentially extending its experimental half-life and bioavailability within central nervous system matrices. Extensively evaluated across neurobiology, stroke recovery modeling, and cognitive longevity sciences, this precise 10mg single-vial format serves as a premier investigative tool for tracking brain-derived neurotrophic factor expression, neurotransmitter balancing, and cellular survival mechanisms.

### Mechanism of Action
Semax operates via a highly specialized neurochemical cascade to preserve, stimulate, and optimize central nervous system architecture:
* **BDNF & TrkB Receptor Axis Amplification:** Semax triggers a profound upregulation in the transcription and synthesis of Brain-Derived Neurotrophic Factor ($BDNF$) and Nerve Growth Factor ($NGF$) within the hippocampus and reticular formation. This downstream activation of Tyrosine Kinase B ($TrkB$) receptors drives robust neurite outgrowth, spinogenesis, and long-term potentiation ($LTP$).
* **Melanocortin Receptor Signaling (Non-Steroidal):** While derived from an ACTH fragment, Semax selectively engages central melanocortin receptors (primarily MC4R and MC5R) without stimulating the adrenal cortex or prompting systemic corticosteroid release. This pathways acts as a powerful neuromodulator, protecting delicate cortical layouts against metabolic shock.
* **Profound Neuroprecipitate Proteolytic Stability:** The integrated Pro-Gly-Pro sequence stabilizes the peptide chain against enzymatic cleavage, allowing the active molecule to seamlessly influence central neurotransmitter levels—specifically accelerating the turnover dynamics of dopamine and serotonin in the prefrontal cortex.
* **Mitigation of Excitotoxicity & Ischemic Shocks:** In cellular distress modeling, Semax is actively investigated for its capacity to downregulate genes responsible for inflammation and apoptotic signaling (such as specific interleukins and nitric oxide synthases), preventing calcium-dependent glutamate excitotoxicity and preserving microvascular endothelial integrity.

### Research Applications
In preclinical and in vitro laboratory models, Semax 10mg vials are actively utilized to investigate:
* Advanced cognitive longevity, memory consolidation kinetics, and attention-span modulation in neuro-fatigue simulations.
* Neuro-protective recovery loops under simulated ischemic stroke conditions and optic nerve trauma modeling.
* Transcriptomic shifts, tracking the immediate upregulation of neurotrophin expression inside hippocampal tissue.
* Behavioral adaptations, exploratory drive modulation, and stress-extinction feedback loops under chemical disruption.

Our Semax vials undergo strict laboratory stabilization, high-grade purification, and uniform vacuum-drying guidelines to ensure absolute peptide chain integrity, rapid reconstitution kinetics, and dependable experimental reproducibility.

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*Disclaimer: This product is sold strictly for laboratory research and development use only. It is not intended for human consumption, diagnostic, or therapeutic purposes.*