Arsenic at very low concentrations alters glucocorticoid receptor (GR)-mediated gene activation but not GR-mediated gene repression: complex dose-response effects are closely correlated with levels of activated GR and require a functional GR DNA binding domain.
Chem Res Toxicol. 2004 Aug;17(8):1064-76. doi: 10.1021/tx0499113. Chem Res Toxicol. 2004. PMID: 15310238