The thymus has a dominant immunological role in utero and in early childhood, being a primary source of T lymphopoiesis, and its investigation may be particularly relevant for the immunological study of paediatric patients. Thymulin, a nonapeptide secreted by the thymus, is an essential hormone for T lymphocyte differentiation and function. As thymulin values in the normal population have not been well documented, especially for children under the age of 1 year, we detail thymic endocrine function by presenting age-related plasma thymulin levels in a large series (n = 93) of healthy individuals, ranging from birth to old age. We demonstrate that thymulin is already detectable at birth; it then gradually increases with age, reaching the highest level in children aged 5-10 years. Starting at adolescence, thymulin titres gradually start to fall, reaching the lowest value at 36 years of age and remaining steady until 80 years (the oldest person tested).
|Autori:||CONSOLINI R; A. LEGITIMO; A. CALLERI; M. MILANI|
|Titolo:||Distribution of age-related thymulin titres in normal subjects through the course of life|
|Anno del prodotto:||2000|
|Digital Object Identifier (DOI):||10.1046/j.1365-2249.2000.01315.x|
|Appare nelle tipologie:||1.1 Articolo in rivista|