Does glucose variability influence the relationship between mean plasma glucose and HbA1c levels in type 1 and type 2 diabetic patients?
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Does glucose variability influence the relationship between mean plasma glucose and HbA1c levels in type 1 and type 2 diabetic patients? / ADAG Study Group.
I: Diabetes Care. Supplement, Bind 34, Nr. 8, 08.2011, s. 1843-7.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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T1 - Does glucose variability influence the relationship between mean plasma glucose and HbA1c levels in type 1 and type 2 diabetic patients?
AU - Kuenen, Judith C
AU - Borg, Rikke
AU - Kuik, Dirk J
AU - Zheng, Hui
AU - Schoenfeld, David
AU - Diamant, Michaela
AU - Nathan, David M
AU - Heine, Robert J
AU - ADAG Study Group
PY - 2011/8
Y1 - 2011/8
N2 - OBJECTIVE: The A1C-Derived Average Glucose (ADAG) study demonstrated a linear relationship between HbA(1c) and mean plasma glucose (MPG). As glucose variability (GV) may contribute to glycation, we examined the association of several glucose variability indices and the MPG-HbA(1c) relationship.RESEARCH DESIGN AND METHODS: Analyses included 268 patients with type 1 diabetes and 159 with type 2 diabetes. MPG during 3 months was calculated from 7-point self-monitored plasma glucose and continuous glucose monitoring. We calculated three different measures of GV and used a multiple-step regression model to determine the contribution of the respective GV measures to the MPG-HbA(1c) relationship.RESULTS: GV, as reflected by SD and continuous overlapping net glycemic action, had a significant effect on the MPG-HbA(1c) relationship in type 1 diabetic patients so that high GV led to a higher HbA(1c) level for the same MPG. In type 1 diabetes, the impact of confounding and effect modification of a low versus high SD at an MPG level of 160 mg/dL on the HbA(1c) level is 7.02 vs. 7.43 and 6.96 vs. 7.41. All GV measures showed the same tendency.CONCLUSIONS: In only type 1 diabetic patients, GV shows a significant interaction with MPG in the association with HbA(1c). This effect is more pronounced at higher HbA(1c) levels. However, the impact of GV on the HbA(1c) level in type 1 diabetes is modest, particularly when HbA(1c) is close to the treatment target of 7%.
AB - OBJECTIVE: The A1C-Derived Average Glucose (ADAG) study demonstrated a linear relationship between HbA(1c) and mean plasma glucose (MPG). As glucose variability (GV) may contribute to glycation, we examined the association of several glucose variability indices and the MPG-HbA(1c) relationship.RESEARCH DESIGN AND METHODS: Analyses included 268 patients with type 1 diabetes and 159 with type 2 diabetes. MPG during 3 months was calculated from 7-point self-monitored plasma glucose and continuous glucose monitoring. We calculated three different measures of GV and used a multiple-step regression model to determine the contribution of the respective GV measures to the MPG-HbA(1c) relationship.RESULTS: GV, as reflected by SD and continuous overlapping net glycemic action, had a significant effect on the MPG-HbA(1c) relationship in type 1 diabetic patients so that high GV led to a higher HbA(1c) level for the same MPG. In type 1 diabetes, the impact of confounding and effect modification of a low versus high SD at an MPG level of 160 mg/dL on the HbA(1c) level is 7.02 vs. 7.43 and 6.96 vs. 7.41. All GV measures showed the same tendency.CONCLUSIONS: In only type 1 diabetic patients, GV shows a significant interaction with MPG in the association with HbA(1c). This effect is more pronounced at higher HbA(1c) levels. However, the impact of GV on the HbA(1c) level in type 1 diabetes is modest, particularly when HbA(1c) is close to the treatment target of 7%.
KW - Adolescent
KW - Adult
KW - Aged
KW - Blood Glucose/metabolism
KW - Diabetes Mellitus, Type 1/blood
KW - Diabetes Mellitus, Type 2/blood
KW - Female
KW - Glycated Hemoglobin A/metabolism
KW - Humans
KW - Male
KW - Middle Aged
KW - Young Adult
U2 - 10.2337/dc10-2217
DO - 10.2337/dc10-2217
M3 - Journal article
C2 - 21700921
VL - 34
SP - 1843
EP - 1847
JO - Diabetes Care
JF - Diabetes Care
SN - 1935-5548
IS - 8
ER -
ID: 203775020