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This study is undertaken to explore in patients with uncontrolled T2D treated with insulin, whether a diet with large breakfast and lunch with small dinner (Bdiet) will enhance CG expression and will be more effective for weight loss and for achieving glycemic control and reduction of total daily insulin dose (first end point), compared to an isocaloric diet with 6 small meals distributed evenly along the day
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Obese patients with type 2 diabetes (T2D) and insulin resistance (IR), often require sequential increments of total daily insulin dose (TDID). This causes weight gain, worsens IR, leading to further increase of TDID and persistent hyperglycemia. In these patients, weight loss (WL) and reduction of IR are mandatory in order to achieve glucose control with less TDID. Impaired clock gene (CG) expression is linked to obesity and IR in T2D and it was shown in animals and T2D patients treated with oral anti-hyperglycemic drugs, that WL diet with restricted meal timing to specific hours, restored CG expression and was more effective for WL and for reduction of hyperglycemia compared to isocaloric WL diet, (commonly recommended for T2D), consisting of small meals randomly distributed along the day.
The investigators hypothesized that in patients with uncontrolled T2D treated with insulin, a diet with large breakfast and lunch with small dinner (Bdiet) will enhance CG expression and will be more effective for WL and for achieving glycemic control and reduction of TDID, compared to an isocaloric diet with 6 small meals distributed evenly along the day (6Mdiet).
This will be a randomized parallel, open label clinical study. Thirty overweight and obese insulin-treated T2D patients with HbA1c>7.5% will be assigned to 12 weeks of 2 isocaloric diets: either Bdiet or 6Mdiet. HbA1c and CG mRNA expression in white blood cells and overall daily glycemia measured during 14 days, will be assessed before diet, after 14 days and at the end of the diet intervention. The TDID (first end point ) will be adjusted by physician, according to the results of self-monitoring of blood glucose on 3 consecutive days at baseline and before each of the visits.
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28 participants in 2 patient groups
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Data sourced from clinicaltrials.gov
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