Clinical pediatrics · 2013
Comparison of oral and intravenous glucose tolerance test derived sensitivity and secretory indices in obese adolescents.
Сравнительное исследованиеСтатьяПоддержка NIH: внешняя программаПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Brar Preneet C, Koren Dorit, Gallagher Paul R, Pendurthi Bhavana, Katz Lorraine E Levitt
Аннотация
BACKGROUND: Insulin resistance increases type 2 diabetes risk in obese adolescents. Thus, quantitative tools measuring insulin sensitivity and secretion are important for risk assessment.
METHODS: Forty-four obese pubertal adolescents underwent oral glucose tolerance test (OGTT) and frequently sampled intravenous glucose tolerance test (FSIGT). We correlated OGTT-derived whole body sensitivity index (WBISI) with FSIGT-derived insulin sensitivity index (Si). Insulinogenic index (IGI) from OGTT was compared with acute insulin response to glucose (AIRg) from FSIGT.
RESULTS: Fasting insulin (r = -.64, P < .0005) and glucose (r = -.39 P ≤ .0005) predicted Si. The OGTT-derived index WBISI correlated with the FSIGT-derived Si (r = .608, P < .0005). IGI correlated with AIRg from FSIGT (r = .704, P < .0005).
CONCLUSIONS: OGTT-based measures correlated with FSIGT-derived measures of insulin sensitivity and secretion. In particular, we demonstrated that WBISI can be a reliable alternative to FSIGT-derived Si in clinical settings where OGTT is a more feasible option.
METHODS: Forty-four obese pubertal adolescents underwent oral glucose tolerance test (OGTT) and frequently sampled intravenous glucose tolerance test (FSIGT). We correlated OGTT-derived whole body sensitivity index (WBISI) with FSIGT-derived insulin sensitivity index (Si). Insulinogenic index (IGI) from OGTT was compared with acute insulin response to glucose (AIRg) from FSIGT.
RESULTS: Fasting insulin (r = -.64, P < .0005) and glucose (r = -.39 P ≤ .0005) predicted Si. The OGTT-derived index WBISI correlated with the FSIGT-derived Si (r = .608, P < .0005). IGI correlated with AIRg from FSIGT (r = .704, P < .0005).
CONCLUSIONS: OGTT-based measures correlated with FSIGT-derived measures of insulin sensitivity and secretion. In particular, we demonstrated that WBISI can be a reliable alternative to FSIGT-derived Si in clinical settings where OGTT is a more feasible option.