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PT-141 (Bremelanotide) is a cyclic melanocortin receptor agonist studied for MC3R/MC4R activation in hypothalamic circuits. Preclinical models document dose-dependent behavioral endpoints via dopaminergic and oxytocin pathways — distinct from PDE5 inhibitor mechanisms. Independent research compilation for scientific and educational reference only.
Selank (Thr-Lys-Pro-Arg-Pro-Gly-Pro) is a synthetic heptapeptide built on the tuftsin core. Preclinical studies document enkephalinase inhibition (IC50 15 µM), GABAergic gene expression changes in rat frontal cortex, BDNF induction in hippocampus, and cytokine normalization under social stress models. Independent research compilation for scientific and educational reference only.
NAD+ levels decline 55–67% in aged rodent skeletal muscle. Preclinical models document sirtuin pathway dysfunction, PARP-mediated NAD+ depletion, and CD38 upregulation as primary mechanisms. NMN and NR supplementation in animal models shows mitochondrial rescue and stem cell rejuvenation. Independent research compilation for scientific and educational reference only.
Preclinical research review of MOTS-c: mitochondrial retrograde signaling, AMPK-NRF2 nuclear gene regulation, exercise-induced expression in rodent models, and age-associated metabolic research findings.
Preclinical research review of Semax (ACTH(4-7)-Pro-Gly-Pro): BDNF-TrkB signaling in rodent hippocampus, ischemia neuroprotection in MCAO models, and monoaminergic modulation data from published animal studies.
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Peptides are short chains of amino acids linked by peptide bonds, typically consisting of 2-50 amino acids. They serve as the building blocks of proteins and play crucial roles in biological processes.
Research peptides are synthesized versions of naturally occurring peptides, manufactured to precise specifications for use in scientific studies.
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