Pineal Peptides Epitalon and Epithalamin Boost Brain Cell Growth in Aging Rats

The preoptic hypothalamus area (MPA) is a crucial brain region involved in regulating various physiological processes, including aging and neurogenesis. As organisms age, the brain's capacity for cell proliferation and repair often declines, contributing to age-related cognitive and functional impairments. This study investigates how specific pineal gland-derived peptide preparations, Epitalon and Epithalamin, influence proliferative activity in this vital brain region, particularly in the context of aging.

The study found that both Epitalon (2 ng/ml) and Epithalamin (100 ng/ml) significantly stimulated the development of proliferative activity in the MPA explants from both young (3-month-old) and old (24-month-old) female rats. Notably, Epithalamin demonstrated a more pronounced and effective stimulation of proliferation in explants derived from young rats compared to those from old animals. In contrast, Epitalon, as well as Epithalamin, showed an almost identical, though less pronounced, inducing effect on the specific growth zone within MPA explants from both young and old animals. This suggests a nuanced, tissue-specific effect, with the observed benefits potentially mediated by the inhibition of apoptosis (programmed cell death), thereby preserving cell viability and promoting growth.