Effect of dietary nucleotides on immune function in Balb/C mice

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Abstract

This study investigated the effect of dietary nucleotides (NTs) on immune function in female Balb/C mice, which randomly distributed into six groups: one control group, one NF-free (NF) control group and four NT groups. NTs ranged from 0.0025% to 0.64%. Compared with the control group, the NF could significantly weaken the activity of T lymphocytes and macrophages, as well as decreased the activity of B lymphocytes and NK cell. NF significantly decreased the ratio of CD4+/CD8+, whereas, it increased Tr percentage. In comparison with the NF group, the concentration of serum IL-2 and IL-4 showed an increase trend. Meanwhile, the granular cell macrophages colony stimulating factor (GM-CSF) increased significantly in the 0.04% NT group. The ratio of Th1/Th2 also showed an increasing trend after the supplements of NTs. There were no significant differences between the control and 0.04% NT group. Nevertheless, no significant differences in weight gain and lymphoid organ indices were observed in our study. These results indicate that NT supplements can prevent hypoimmunity which result from NF diet. 0.04% NTs is the healthy optimal supply proportion in mice diet.

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