TNF and Alzheimer disease: When compared to the AD group, the expression of TNF-α was also found to be lower in sham group (p < 0.001), KRG group (p = 0.048), AH group (p = 0.049), KRG + AH group (p = 0.048), CS group (p = 0.008), and KRG + CS group (p = 0.006).