Journal of investigative medicine : the official publication of the American Federation for Clinical Research · 2014
Intensive therapy in newly diagnosed type 2 diabetes: results of a 6-year randomized trial.
СтатьяРандомизированное исследованиеПоддержка NIH: внешняя программаПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Harrison Lindsay B, Adams-Huet Beverley, Li Xilong, Raskin Philip, Lingvay Ildiko
Аннотация
BACKGROUND: This study aimed to assess the efficacy of early intensive diabetes therapy with either insulin plus metformin (INS) or triple oral therapy (TOT) with metformin, glyburide, and pioglitazone on glycemic control and A-cell function.
METHODS: Fifty-eight treatment-naive newly diagnosed patients with type 2 diabetes underwent a 3-month lead-in treatment period with insulin and metformin, then were randomized to INS or TOT for 6 years. β-Cell function was measured using mixed-meal challenge test. β-Cell function remained stable throughout the 6-year study in both groups, as measured by the C-peptide area under the curve (AUC; P = 0.13), the AUC C-peptide/AUC glucose (P = 0.9), and by the disposition index (P = 0.8). Excellent glycemic control was maintained in both groups (end-of-study hemoglobinA1c, 7.3% [SD, 1.7%] INS vs 6.4% [1.4%] TOT; P = 0.4). There were 8 treatment failures (confirmed hemoglobinA1c, 98%) in INS and 6 in TOT (P = 0.93). The predictors of treatment failure included higher fasting glucose (P = 0.008), fasting C-peptide (P = 0.008), systolic blood pressure (P = 0.004), and lower insulin sensitivity (P = 0.04) at randomization.
CONCLUSIONS: Early intensive treatment at the time of type 2 diabetes diagnosis-initial short-term insulin treatment followed by either insulin-based or intensive oral hypoglycemic-based therapy-stabilizes β-cell function for at least 6 years. Treatment failure was independent of intervention and was associated with worse disease pathology at baseline.
METHODS: Fifty-eight treatment-naive newly diagnosed patients with type 2 diabetes underwent a 3-month lead-in treatment period with insulin and metformin, then were randomized to INS or TOT for 6 years. β-Cell function was measured using mixed-meal challenge test. β-Cell function remained stable throughout the 6-year study in both groups, as measured by the C-peptide area under the curve (AUC; P = 0.13), the AUC C-peptide/AUC glucose (P = 0.9), and by the disposition index (P = 0.8). Excellent glycemic control was maintained in both groups (end-of-study hemoglobinA1c, 7.3% [SD, 1.7%] INS vs 6.4% [1.4%] TOT; P = 0.4). There were 8 treatment failures (confirmed hemoglobinA1c, 98%) in INS and 6 in TOT (P = 0.93). The predictors of treatment failure included higher fasting glucose (P = 0.008), fasting C-peptide (P = 0.008), systolic blood pressure (P = 0.004), and lower insulin sensitivity (P = 0.04) at randomization.
CONCLUSIONS: Early intensive treatment at the time of type 2 diabetes diagnosis-initial short-term insulin treatment followed by either insulin-based or intensive oral hypoglycemic-based therapy-stabilizes β-cell function for at least 6 years. Treatment failure was independent of intervention and was associated with worse disease pathology at baseline.