Indexes of β-cell function from the oral glucose tolerance test can modestly predict pancreatic β-cell area in Korean
2011
Kim, Soo Kyoung | Kim, Jae Hyeon | Park, Ji Young | No, Hee Sung | Jang, Kee-Taek | Heo, Jin Seok | Choi, Seong Ho | Choi, Dong Wook | Kim, Kwang-wŏn
AIMS: Pancreatic β-cell function indexes have been suggested using the oral glucose tolerance test (OGTT). Here, we investigated whether β-cell function index from the OGTT reflects pancreatic β-cell area in Korean patients. METHODS: The study consisted of 45 patients who underwent pancreatectomies. Before operation, a 75-g OGTT was performed. Immunohistochemical staining was performed, and indexes of β-cell function from the OGTT data were compared with the pancreatic β-cell area. RESULTS: The β-cell area of the pancreas was 1.07±0.33% in the normal glucose tolerance group, 1.71±0.85% in the pre-diabetes group (impaired glucose tolerance and impaired fasting glucose), and 1.08±0.57% in the diabetes group. The β-cell area of the pre-diabetes group was significantly higher than that of the diabetes group. Pancreatic β-cell area showed a significant correlation with a homeostasis model assessment of β-cell function (r=0.358, P=0.016), disposition index (r=0.336, P=0.024), fasting glucose (r=−0.359, P=0.015), and the C-peptide/glucose 30min ratio (r=0.319, P=0.035). CONCLUSIONS: Some parameters of β-cell function from the OGTT showed a significant relationship with the β-cell area of pancreas.
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