Figure 2 Comparison of activating transcription factor 4 (ATF4) and C/EBPO homologous protein (CHOP) protein levels in peripheral blood mononuclear cells (PBMCs) of patients with sudden sensorineural hearing loss (SSNHL) before and after treatment. Examples of quantitative protein detection of ATF4 in PBMCs from (A) patients with SSNHL in the improved group and (B) in the unimproved group before (pre-) and after (post-) treatment. (C) The protein levels of ATF4 were quantitatively analyzed. Examples of quantitative protein detection of CHOP in PBMCs in the (D) improved group and (E) in the unimproved group before (pre-) and after (post-) treatment. (F) The protein levels of CHOP were quantitatively analyzed. * and # indicate P<0.05.