Nootropic
Definition
A nootropic is a substance that enhances cognitive function, including memory, attention, learning, or executive function. Peptide nootropics work through diverse mechanisms: Semax increases BDNF and NGF expression, Selank modulates enkephalin metabolism and GABAergic signaling, Dihexa promotes synaptogenesis via the HGF/c-Met system, and PE-22-28 acts through novel TRH receptor subtypes in the hippocampus.
Related Terms
Related Compounds
Semax
An in-depth review of Semax, a synthetic ACTH(4-10) analog, examining its nootropic properties, BDNF and NGF upregulation, neuroprotective mechanisms, and applications in cognitive enhancement research.
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An in-depth review of Selank, a synthetic tuftsin analog heptapeptide, covering its anxiolytic mechanisms, cognitive enhancement potential, GABA modulation, immunomodulatory properties, and key published research findings.
Read monographDihexa
An in-depth review of Dihexa, a potent angiotensin IV analog and HGF/c-Met signaling activator, examining its role in synaptogenesis, cognitive enhancement, neuroplasticity, and dementia-related research.
Read monographRelated Studies
Effects of an Angiotensin IV Analog on 3-Nitropropionic Acid-induced Huntington's Disease-Like Symptoms in Rats
Wells RG, Yamamoto BK, Wright JW, et al. · Journal of Huntington's Disease (2024)
Antidepressant-like and antistress effects of Semax in rats subjected to chronic unpredictable stress
Inozemtseva LS, Karpenko EA, Dolotov OV, et al. · European Journal of Pharmacology (2024)
Procognitive and synaptogenic effects of angiotensin IV-derived peptides are dependent on activation of the hepatocyte growth factor/c-met system
Benoist CC, Kawas LH, Zhu M, et al. · Journal of Pharmacology and Experimental Therapeutics (2014)
A novel angiotensin IV/AT4 receptor ligand, Nle1-AngIV (dihexa), is a potent procognitive agent that augments hepatocyte growth factor (HGF)/Met signaling
McCoy AT, Benoist CC, Wright JW, et al. · Journal of Pharmacology and Experimental Therapeutics (2013)