In the AD + BVA group, the protein expression levels of the Th2 cytokines IL-5, IL-10, GM-CSF, and IL-4 decreased to 0.13 ± 0.1, 2.23 ± 0.12 (p < 0.001, AD group vs. AD + BVA group), 0.33 ± 0.15 (p < 0.05, AD group vs. AD + BVA group), and 57.23 ± 2.7 (p < 0.001, AD group vs. AD + BVA group), respectively, from 0.5 ± 0.5, 3.87 ± 0.03, 1.26 ± 0.17, and 81.64 ± 4.72 in the AD group. This evidence concerns the gene IL5 and Alzheimer disease.