Figure 4. Chronic unpredictable mild stress (CUMS) induced decreased mRNA expression of neurotrophic factors and its receptors in the
retina. The mRNA expressions of brain-derived neurotrophic factor (BDNF), tyrosine protein kinase receptor B (TrkB), nerve
growth factor (NGF), tyrosine protein kinase receptor A (TrkA), and ciliary neurotrophic factor (CNTF) in the retina decreased
at the end of 5 weeks of CUMS exposure compared with normal controls. Data are presented as mean ± standard error of the mean
(SEM), n = 5–6.*p<0.05. **p<0.01.