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. 2013 Jan 17;62(2):510–518. doi: 10.2337/db12-0294

FIG. 1.

FIG. 1.

Disruption of PGDPs improves glucose tolerance and enhances insulin secretion. Blood glucose levels (A) and plasma insulin levels (B) in the OGTT in 12- to 15-week-old control (Ctl, Gcg+/+ and Gcggfp/+) and Gcggfp/gfp mice (n = 5–6 mice per group). Blood glucose levels (C) and plasma insulin levels (D) in the IPGTT in 11- to 22-week-old mice (n = 9–10 mice per group). E: Glucose-induced insulin secretion from isolated islets. Pancreatic islets were isolated from 5- to 7-month-old control (Gcg+/+ and Gcggfp/+, n = 13–18 in each group) and Gcggfp/gfp (n = 8–9 in each group) mice and incubated with the indicated concentration of glucose for 30 min. Insulin secretion is expressed as the ratio of insulin released into the medium relative to insulin content. Values are expressed as means ± SEM. *P < 0.05; **P < 0.01; ***P < 0.001 vs. Ctl. ††P < 0.01. †††P < 0.001 vs. 4.2 mmol/L glucose. #P < 0.05; ##P < 0.01; ###P < 0.001 vs. 2.8 mmol/L glucose.