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Altered Plasma Levels of Glucagon, GLP-1 and Glicentin During OGTT in Adolescents With Obesity and Type 2 Diabetes
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- Manell, Hannes (author)
- Uppsala universitet,Institutionen för medicinsk cellbiologi
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- Staaf, Johan (author)
- Uppsala universitet,Pediatrik,Institutionen för medicinsk cellbiologi
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- Manukyan, Levon (author)
- Uppsala universitet,Institutionen för medicinsk cellbiologi
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- The Endocrine Society, 2016
- 2016
- English.
- In: Journal of Clinical Endocrinology and Metabolism. - : The Endocrine Society. - 0021-972X .- 1945-7197. ; 101:3, s. 1181-1189
- Journal article (peer-reviewed)
Abstract
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- CONTEXT: Proglucagon-derived hormones are important for glucose metabolism, but little is known about them in pediatric obesity and type 2 diabetes mellitus (T2DM).OBJECTIVE: Fasting and postprandial levels of proglucagon-derived peptides glucagon, GLP-1, and glicentin in adolescents with obesity across the glucose tolerance spectrum were investigated.DESIGN: This was a cross-sectional study with plasma hormone levels quantified at fasting and during an oral glucose tolerance test (OGTT).SETTING: This study took place in a pediatric obesity clinic at Uppsala University Hospital, Sweden.PATIENTS AND PARTICIPANTS: Adolescents with obesity, age 10-18 years, with normal glucose tolerance (NGT, n = 23), impaired glucose tolerance (IGT, n = 19), or T2DM (n = 4) and age-matched lean adolescents (n = 19) were included.MAIN OUTCOME MEASURES: Outcome measures were fasting and OGTT plasma levels of insulin, glucagon, active GLP-1, and glicentin.RESULTS: Adolescents with obesity and IGT had lower fasting GLP-1 and glicentin levels than those with NGT (0.25 vs 0.53 pM, P < .05; 18.2 vs 23.6 pM, P < .01) and adolescents with obesity and T2DM had higher fasting glucagon levels (18.1 vs 10.1 pM, P < .01) than those with NGT. During OGTT, glicentin/glucagon ratios were lower in adolescents with obesity and NGT than in lean adolescents (P < .01) and even lower in IGT (P < .05) and T2DM (P < .001).CONCLUSIONS: Obese adolescents with IGT have lowered fasting GLP-1 and glicentin levels. In T2DM, fasting glucagon levels are elevated, whereas GLP-1 and glicentin levels are maintained low. During OGTT, adolescents with obesity have more products of pancreatically than intestinally cleaved proglucagon (ie, more glucagon and less GLP-1) in the plasma. This shift becomes more pronounced when glucose tolerance deteriorates.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Endokrinologi och diabetes (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Endocrinology and Diabetes (hsv//eng)
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- Ciba, Iris
- Forslund, Anders
- Bergsten, Peter
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