Evaluation of The Number of CD4+ CD25+ FoxP3+ Treg Cells in Normal Mice Exposed to AFB1 and Treated with Aged Garlic Extract

(AFB1) suppresses the immune system. To decrease such suppressive effects on the immune system, a wide range of herbal medicines like garlic are utilized. Biological activities of garlic in vitro and in ous studies demonstrated that aged garlic (dry garlic bulbs preserved in the freezer for suppressor fractions. This study focuses on the immunosuppressor activity of AFB1 and immunostimulator activity of aged garlic extract (AGE) through the evaluation of CD4+ CD25+ FoxP+ regulator cell (Treg) counts and the pattern of cytokine production in Balb/c normal mice. In this experimental research, AFB1 was separated from As- Delayed-Type Hypersensitivity (DTH) test was carried out to determinate the effectiveness of different doses of AGE and AFB1, which can both have an effect on the immune system. Subsequent experiments were carried out on 20 Balb/c mice to estimate the effects of AGE and AFB1 on the number of Treg cell in 4 groups: 10 μl/kg/day of AFB1 and AGE diluents were administered for 4 consecutive days to group 1. AFB1, 2. control, 3. AGE + splenocytes harvested and the percentage of splenic cytometry analysis. The ELISA method was utilized to measure Cytokine production.and IL-4 cytokines produced by splenocytes stimulated by and decreased the number of Treg cells in the spleen (p<0.05). AFB1 increased the number Treg cells in the spleen and decreased cytokine production (p<0.05). In groups 2 (control) and 4 (AGE) the number of Treg cells decreased (p value<0.05) whereas in groups 1 and 3 the number of Treg cells increased (p<0.05). This study indicated that AGE is able to alter the cytokine production in normal mice into a Th1 and anti-tumor immunity in particular. AFB1 is able to alter the cytokine production into a Th2 protective pattern. Therefore, AGE might be used as herbal medicine with few side effects as compared to chemotherapy in treating cancers caused by substances like AFB1