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Briefly, Kokas extensor postural thrust (EPT) i.e., modified motor function index (MFI) assessed by an experienced, but naive, co-tester, as the weight on a digital weighing scale (precision 0.001 g) borne by the hind limb at the moment when the rat was held upright, with the hind limb extended and placed upon a scale, begins to bear weight on the scale, as follows: EPT = (NEPTEEPT)/NEPT (NEPT and EEPT represent EPT value before surgery (normal) and after surgery (experimental), respectively)

enthusiasm dramatically outpaces science FDA Category 2 classifications for peptides like Semax reflect absence of FDA-standard evidence, not documented harmsRussian clinical experience suggests reasonable safety, but long-term effects by Western standards remain uncharacterized Established interventionsexercise, Mediterranean diet, sleep optimization, cardiovascular risk management, cognitive engagementhave far more consistent evidence than any peptide for dementia risk reduction For Research Prioritization Compounds meriting continued investigation: GLP-1 Agonists: Prevention trials in preclinical/presymptomatic populations, testing compounds with better brain penetration (dulaglutide, lixisenatide) SS-31/Elamipretide: Cognitive outcomes in mitochondrial disease populations, potential expansion to brain aging indications P21: Phase I human trials to establish safety, pharmacokinetics, and proof-of-mechanism for CNTF-pathway neurogenesis Klotho: Watch for Phase 1 results from Jocasta Neuroscience (expected 2027-2028)
