Fig. 1
Effects of PS-NPs with different charges on body weight and liver organ coefficient. (A) Body weight; (B) Organ coefficient of the liver; (C) Mice in saline group; (D) Mice in Fat-STZ-NPs-NH2 group. All pictures were taken on the last day before the mice were euthanized. In (A) and (B), Saline, NPs-C, NPs, NPs-N, STZ, STZ -SC, STZ - NPs-C, STZ - NPs-C-SC, STZ - NPs, STZ - NPs -SC, STZ - NPs-N, and STZ-NPs-N-SC represent Saline group, NPs-COOH group, NPs group, NPs-NH2 group, Fat-STZ-Saline group, Fat-STZ-Saline-SC79 group, Fat-STZ-NP-COOH group, Fat-STZ-NP-COOH-SC79 group, Fat-STZ-NPs group, Fat-STZ-NPs-SC79 group, Fat-STZ-NPs-NH2 group and Fat-STZ-NPs-NH2-SC79 group, respectively. Results are presented as the mean ± SEM, n = 10. The significance of differences was determined by using a one-way ANOVA, combined with multiple comparison tests between Tukey’s groups and Student’s t-test. * means p < 0.05, ** means p < 0.01, *** means p < 0.001 compared with the saline-vehicle control group; & means p < 0.05, && p < 0.01 compared with Fat-STZ diabetic group; # means p < 0.05, ## means p < 0.01, ### means p < 0.001 compared with the Fat-STZ-NPs/NH2/COOH-SC79; $ means p < 0.05, $$ means p < 0.01, $$$ means p < 0.001 compared between exposure groups; ns means no significant difference