Study summary · research use only
Peptidegic stimulation of differentiation of pineal immune cells
Plain-language summary
Paraphrased from the published abstract below — not a verdict on whether anything works.
This laboratory study (species not specified) examined cell composition of pineal lymphoid tissue in organotypic culture and the effect of peptides on its differentiation and proliferation. The lymphoid component of the pineal gland was primarily composed of low-differentiated CD5(+) lymphocytes, with mature T and B cells less abundant. Dipeptide vilon was reported to stimulate differentiation of precursor cells into T-helpers, cytotoxic T lymphocytes, and B cells, while tetrapeptide epithalon stimulated differentiation toward B cells; tripeptide vesugen had no effect on differentiation capacity but enhanced proliferation potential. The authors suggest dipeptide vilon may play a compensatory role in age-related thymus atrophy by inducing differentiation of pineal immune cells.
Abstract
We studied cell composition of the pineal lymphoid tissue and the effect of peptides on its differentiation and proliferation capacity. It was shown that the lymphoid component of the pineal gland in organotypic culture is primarily presented by low-differentiated CD5(+)-lymphocytes, while mature T and B cells are less abundant. Dipeptide vilon stimulates differentiation of precursors into T-helpers, cytotoxic T lymphocytes, and B cells, while tetrapeptide epithalon stimulated their differentiation towards B cells. Tripeptide vesugen had no effect on differentiation capacity of immune cells of the pineal gland, but enhanced their proliferation potential. Thus, dipeptide vilon acts as an inductor of differentiation of pineal immune cells, which can play an important compensatory role in age-related atrophy of the thymus, the central organ of the immune system.
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