Are serum concentrations of insulin , insulin-like growth factor-I and insulin-like growth factor binding proteins different between white and African American girls?
Higher serum insulin concentrations in the African American girls are associated with lower serum IGFBP-1 concentrations and increased bioavailability of free IGF-I, which may contribute to their accelerated growth compared with their white counterparts.
Environmental toxicant exposure alters the expression of a suite of miRNAs.