There were no significant differences in collagen/elastin ratio between the C group and the AD group (p = 0.093), between the C group and the CA group (p = 0.589), between the AD group and the AD + CA group (p = 0.240), and between the CA group and the AD + CA group (p = 0.180) (Figure 5). The gene discussed is ELN; the disease is Alzheimer disease.