BDNF and nutritional disorder: To provide a potential link between fetal-neonatal iron status and iron-dependent chromatin modifiers and to gain insight into a possible mechanism underlying BDNF gene regulation during iron deficiency, we analyzed expression of histone H3 demethylases (JARIDs) that require iron as a cofactor (Takeuchi et al. 2006; Sengoku and Yokoyama 2011).