Figure 4.
Effect of SLIGRL-NH2 on the expression of VIP and SP in colons of loperamide-induced constipated rats.
Notes: (A) Relative expression of VIP in different groups by ELISA. (B) Relative protein expression of SP in different groups by ELISA. *p<0.05 versus constipation, **p<0.01 versus constipation.
Abbreviations: ELISA, enzyme-linked immunosorbent assay; SP, substance P; VIP, vasoactive intestinal peptide.