BAX and diabetes mellitus: Similarly, immunofluorescence and immunohistochemistry were performed on paraffin tissue sections of cochlea, and the results showed that with the prolongation of the course of diabetes, the expressions of apoptotic proteins Bax and Casapse3 in pericytes of cochlea gradually increased, suggesting that diabetes can induce the apoptosis of pericytes, and their functions and phenotypes will also change correspondingly.