Peptide Research Guides

Browse source-cited guides to research methods, molecular comparisons, analytical interpretation, and evidence boundaries.

• Semaglutide vs tirzepatide vs retatrutide: a research comparison

  A molecule-first comparison of single-, dual-, and triple-receptor agonist research without treating separate trials or materials as interchangeable.

• GLP-1, GIP, and glucagon receptors explained

  How GLP-1R, GIPR, and GCGR differ—and why catalog shorthand such as GLP-2 or GLP-3 should not be mistaken for receptor names.

• MOTS-c vs SS-31: two different mitochondrial research peptides

  A source-cited comparison of a mitochondrial-genome-encoded signaling peptide and a synthetic cardiolipin-associated tetrapeptide.

• Semax vs Selank: sequence, model, and evidence differences

  A cautious comparison of two short synthetic peptides whose evidence bases are dominated by different rodent and molecular studies.

• BPC-157 vs TB-500-related material: what the studies actually identify

  Why BPC-157, full-length Thymosin Beta-4, the LKKTETQ fragment, and products labeled TB-500 must not be treated as one evidence base.

• How to read a peptide COA: HPLC, mass spectrometry, and identity

  A practical analytical-literacy guide explaining why chromatographic purity, molecular mass, content, and batch traceability answer different questions.

• 5-Amino-1MQ and NNMT inhibition: mechanism and model limits

  A source-cited guide to 5-Amino-1MQ, nicotinamide N-methyltransferase inhibition, and the boundaries between biochemical, mouse, and rat evidence.

• SLU-PP-332 and ERR signaling: what “exercise mimetic” means in research

  A primary-source guide to SLU-PP-332, estrogen-related-receptor agonism, mouse exercise models, and why preclinical shorthand is not a human outcome.

• FOXO4-DRI, p53, and cellular senescence: an evidence guide

  A source-cited explanation of the FOXO4–p53 interaction hypothesis, D-retro-inverso peptide design, and the limits of selected cell and mouse studies.

• GHK-Cu, copper binding, and tissue-repair models: an evidence guide

  A primary-source guide to the GHK copper complex, fibroblast collagen experiments, wound models, and why formulation details change the interpretation.

• KPV, PepT1, and NF-kappaB: what intestinal inflammation models show

  A source-cited guide to the Lys-Pro-Val tripeptide, PepT1-mediated uptake, inflammatory signaling assays, and mouse colitis model limits.

• Epithalon, telomerase, and telomeres: separating cell findings from longevity claims

  A primary-source guide to Epithalon cell experiments, telomerase and ALT measurements, mouse longevity observations, and the limits of anti-aging language.

• Cerebrolysin is a peptide mixture: composition, assays, and evidence limits

  A source-cited guide to Cerebrolysin as a porcine-brain-derived peptide mixture, analytical characterization, bioassays, and why one trial cannot define the material.

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