[Deheterochromatinization of the chromatin in old age induced by oligopeptide bioregulator (Lys-Glu-Asp-Pro)].
In lymphocytes from people aged 75-86, Prostamax doubled the sister-chromatid exchange rate (12.0 vs 5.9 per cell) and increased active ribosomal-gene regions, interpreted by the authors as chromatin 'decondensation'.
- Studied
- Cells from old individuals (75-86 years)
- Compared with
- Intact (untreated) cells
- Main outcome
- Sister chromatid exchange, Ag-positive NORs, pericentromeric heterochromatin
- Authors' conclusion
- The authors interpret the changes as Prostamax decondensing the chromatin during aging and releasing repressed genes, suggesting a protective chromatin-modifying effect.
- Limitations
- In vitro cell study; interpretation of chromatin changes as beneficial is speculative; no clinical outcome.