Identification of Peptide AEDG in the Polypeptide Complex of the Pineal Gland.
Level 5 - mechanism / opinion, no new human data
Bench research / analytical chemistry study (no human trial data)
PubMed 29124531 · doi:10.1007/s10517-017-3922-8
What was done
Researchers analyzed the peptide composition of an epiphysis (pineal gland) polypeptide complex using high-performance liquid chromatography (HPLC) and mass spectrometry, followed by selective reaction monitoring to determine whether the tetrapeptide AEDG was present.
What was found
The pineal polypeptide complex was composed of free amino acids (3.26%), dipeptides (23.19%), tripeptides (50.72%), tetrapeptides (22.10%), and pentapeptides (0.72%). Selective reaction monitoring confirmed the presence of the peptide AEDG within the tetrapeptide fraction.
Why it matters
This analytical work identifies that the synthetic peptide AEDG corresponds to an endogenous tetrapeptide sequence present in pineal gland extracts.
Limits
This is an analytical chemistry bench study that reports no sample size, source details, or biological assays. Broad claims regarding biological, antioxidant, and geroprotective effects are stated in the narrative rather than measured in this experiment.
Cited by
- supports Epithalon is derived from pineal gland extract, whereas Pinealon is derived from cortex extract (Cortexin).