Abstract
Brain-derived neurotrophic factor (BDNF) is a mediator of neuronal plasticity influencing learning, memory and cognitive behavior. The aim of this study is to assess plasma BDNF variations according to pubertal status. A total of 110 subjects were included in the study. Blood samples were collected after overnight fasting. Plasma BDNF concentrations were measured by enzyme-linked immunosorbent assay. Gonadotrophins, sex steroids, and IGF-1 were also assessed. BDNF was positively correlated with platelet count and negatively associated with both BMI and age. BDNF levels in pubertal males were significantly lower than prepubertal males and both prepubertal and pubertal females. Plasma BDNF levels seem to be influenced by hormonal status. We demonstrate that parameters such as age or gender have a specific impact on stored and circulating BDNF blood levels and platelets remain the most important predictor of their concentration. Further studies are necessary to better understand the role of this neurotrophin in pubertal development.
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