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Introduction: GABAergic Anxiolysis versus Sleep-Stage Architecture Biology
Anxiety and sleep disruption are closely linked at the neurobiological level — both involve dysregulated HPA axis activity, disturbed aminergic tone, and disordered GABAergic inhibition. Yet the primary mechanisms targeted by Selank (GABA-A potentiation and 5-
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- Anxiety and sleep disruption are closely linked at the neurobiological level — both involve dysregulated HPA axis activity, disturbed aminergic tone, and disordered GABAergic inhibition. Yet the primary mechanisms targeted by Selank (GABA-A potentiation and 5-HT2C regulation) and DSIP (delta sleep induction and circadian neuroendocrine normalisation) are mechanistically distinct — warranting a direct comparison in research design contexts where the choice of agent determines which biological axis is most rigorously probed. Selank (Thr-Lys-Pro-Arg-Pro-Gly-Pro, ~863 Da) is a heptapeptide Thr-Lys-Pro-Arg-Pro-Gly-Pro analogue of the tuftsin sequence. DSIP (Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu, ~848 Da) is a nonapeptide first isolated from rabbit CSF during natural sleep.
- 🔗 Related Reading: For Selank’s complete pharmacology including GABA-A potentiation and neurotrophic biology, see our Selank Pillar Guide.