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Reduced incretin effect in type 2 diabetes: cause or consequence of the diabetic state?

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

DOI

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We aimed to investigate whether the reduced incretin effect observed in patients with type 2 diabetes is a primary event in the pathogenesis of type 2 diabetes or a consequence of the diabetic state. Eight patients with chronic pancreatitis and secondary diabetes (A1C mean [range] of 6.9% [6.2-8.0]), eight patients with chronic pancreatitis and normal glucose tolerance (NGT; 5.3 [4.9-5.7]), eight patients with type 2 diabetes (6.9 [6.2-8.0]); and eight healthy subjects (5.5 [5.1-5.8]) were studied. Blood was sampled over 4 h on 2 separate days after a 50-g oral glucose load and an isoglycemic intravenous glucose infusion, respectively. The incretin effect (100% x [beta-cell secretory response to oral glucose tolerance test - intravenous beta-cell secretory response]/beta-cell secretory response to oral glucose tolerance test) was significantly (P <0.05) reduced (means +/- SE) in patients with chronic pancreatitis and secondary diabetes (31 +/- 4%) compared with patients with chronic pancreatitis and NGT (68 +/- 3) and healthy subjects (60 +/- 4), respectively. In the type 2 diabetes group, the incretin effect amounted to 36 +/- 6%, significantly (P <0.05) lower than in chronic pancreatitis patients with NGT and in healthy subjects, respectively. These results suggest that the reduced incretin effect is not a primary event in the development of type 2 diabetes, but rather a consequence of the diabetic state.
OriginalsprogEngelsk
TidsskriftDiabetes
Vol/bind56
Udgave nummer8
Sider (fra-til)1951-9
Antal sider9
DOI
StatusUdgivet - 1 aug. 2007

ID: 32267914