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. 2017 Sep 11;17:459. doi: 10.1186/s12906-017-1964-0

Fig. 4.

Fig. 4

Serum levels of gut hormones in IGR subjects with TCM body constitutions. The associations of GLP-1 and GIP with Phlegm-damp (a, d), Damp-heat (b, e) and Qi-deficiency (c, f) were investigated. Serum GLP-1 and GIP levels are significantly lower in IGR subjects with Qi-deficiency as compared with IGR subjects without Qi-deficiency. Wilcoxon-Mann-Whitney test was performed. *P<0.05. IGR: impaired glucose regulation; GLP-1: glucagon-like peptide-1; GIP: gastric inhibitory polypeptide