Study summary · research use only
Thymulin and the neuroendocrine system
Plain-language summary
Paraphrased from the published abstract below — not a verdict on whether anything works.
This review article discusses thymulin, a thymic hormone produced by thymic epithelial cells consisting of a nonapeptide coupled to zinc. The authors describe its characterization since the early 1970s as involved in intra- and extrathymic T-cell differentiation, evidence that its production and secretion are strongly influenced by the neuroendocrine system, and emerging information pointing to thymulin as a hypophysotropic peptide. The piece reviews support for the hypothesis that thymulin participates in a hypophyso-thymic axis; it is a narrative synthesis rather than new experimental data.
Abstract
Thymulin is a thymic hormone exclusively produced by the thymic epithelial cells. It consists of a nonapeptide component coupled to the ion zinc, which confers biological activity to this molecule. After its discovery in the early 1970, thymulin was characterized as a thymic hormone involved in several aspects of intra- and extrathymic T-cell differentiation. Subsequently, it was demonstrated that thymulin production and secretion is strongly influenced by the neuroendocrine system. Conversely, an emerging core of information points to thymulin as a hypophysotropic peptide. Here we review the evidence supporting the hypothesis that thymulin is an important player in the hypophyso-thymic axis.
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