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Issue 10, 2016
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Effect of consumption of a carob pod inositol-enriched beverage on insulin sensitivity and inflammation in middle-aged prediabetic subjects

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Abstract

This study assessed the effects of an inositol-enriched beverage (IEB) on blood glucose levels and inflammation status in subjects with an impaired fasting glucose (IFG) state according to body mass index (BMI). This was a 12 week, double-blind, randomized, controlled trial employing forty-four IFG subjects (fasting glucose levels 100–125 mg dl−1) that were divided into two intervention groups: one receiving a IEB (n = 24) containing mainly pinitol (2.0 g twice a day), and the other a sweetened beverage based on sucrose (SB; n = 20). Anthropometric and biochemical measurements, postprandial and fasting nocturnal glycaemia (continuous glucose monitoring system), and inflammatory parameters (IL-6 and TNF-α) were analyzed at baseline and after intervention according to BMI (non-obese: BMI < 30 kg m−2 or obese: BMI ≥ 30 kg m−2). Non-obese subjects who consumed IEB exhibited a significant decrease in insulin (−14.4%), HOMA-IR index (−15.1%) and percentage of glucose change after postprandial and fasting nocturnal periods (−10.0% and −10.3%, respectively) compared with the SB group (−2.35% and 10.2%, respectively) although they did not show any change in inflammatory cytokine levels. By contrast, obese subjects who consumed IEB showed a smaller variation in glucose levels after nocturnal fasting (−4.34%) and a marked decrease in IL-6 and TNF-α (p < 0.05). These findings support that consumption of IEB in prediabetic subjects produces a response that is dependent on BMI, with a clear improvement of insulin resistance and postprandial and nocturnal glycemia in non-obese subjects and a marked anti-inflammatory response in obese subjects.

Graphical abstract: Effect of consumption of a carob pod inositol-enriched beverage on insulin sensitivity and inflammation in middle-aged prediabetic subjects

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Supplementary files

Article information


Submitted
08 Jul 2016
Accepted
30 Aug 2016
First published
31 Aug 2016

Food Funct., 2016,7, 4379-4387
Article type
Paper

Effect of consumption of a carob pod inositol-enriched beverage on insulin sensitivity and inflammation in middle-aged prediabetic subjects

C. Bañuls, S. Rovira-Llopis, S. López-Doménech, S. Veses, V. M. Víctor, M. Rocha and A. Hernández-Mijares, Food Funct., 2016, 7, 4379
DOI: 10.1039/C6FO01021K

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