TNF and diabetes mellitus: TSN decreased the levels of IL-6 (20.3 ± 5.5 vs 26.5 ± 6.3 pg/mg protein, P < 0.05) and TNF-α (69.0 ± 12.4 vs 89.7 ± 10.2 pg/mg protein, P < 0.05) compared with the diabetes group.