Nat Rev Nephrol 22 , 137151 (2026)
The majority of research was determined to be at extreme risk of bias due to inadequate description of randomisation (25%, 3/12), allocation concealment (16.67%, 2/12), description of baseline characteristics (8.33%, 1/12), blinding of caregivers/researchers (8.33%, 1/12), selective reporting of results (8.33%, 1/12) and other sources (8.33%, 1/12)
Molecular Characteristics Complete Specifications: CAS Registry Number: NOT ASSIGNED (synthetic modified peptide) Molecular Weight: 431.40 Da (42 Da higher than Epitalon due to acetyl group) Molecular Formula: CHNO Amino Acid Sequence: N-Ac-Ala-Glu-Asp-Gly (acetylated AEDG) Modification: N-terminal acetylation (acetyl group: COCH) Peptide Classification: Synthetic modified tetrapeptide Appearance: White to off-white lyophilized powder Solubility: Water, bacteriostatic water, phosphate buffered saline The N-acetyl modification adds 42 Da to the molecular weight compared to unmodified Epitalon (390.35 Da)
Therefore, there is a growing interest in the validation of blood or urinary biomarkers for intestinal permeability
