Effects of hypoxia inducible factor-1? on apoptotic inhibition and glucocorticoid receptor downregulation by dexamethasone in AtT-20 cells May 22, 2015 BMC Endocrine Disorders 2015, 15:24Â doi:10.1186/s12902-015-0017-2 Chenran Zhang, Qiang Qiang and Ying Jiang contributed equally to this work. Published: 23 May 2015