Journal
BRITISH JOURNAL OF NUTRITION
Volume 115, Issue 7, Pages 1167-1177Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0007114516000076
Keywords
Probiotics; Glucose; Glycaemic factors
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This meta-analysis examined the effect of probiotics on glucose and glycaemic factors in diabetes and its associated risk factors. All randomised-controlled trials published in English in multiple databases from January 2000 to June 2015 were systematically searched. Only studies that addressed glucose- and glycaemic-related factors as outcome variables were included. The main outcomes of interest in trials were mean changes in glucose, HbA1c, insulin and homoeostasis model assessment-estimated insulin resistance (HOMA-IR). Using the Physiotherapy Evidence Database (PEDro) scale to assess the quality of studies, a total of eleven studies with 614 subjects were included. The pooled mean difference and effect size with a 95 % CI were extracted using a random-effect model. It was found that there are statistically significant pooled mean differences between the probiotics and the placebo-controlled groups on the reduction of glucose (-052 mmol/l, 95 % CI -092, -011 mmol/l; P=001) and HbA1c (-032 %, 95 % CI -057, -007 %; P=001). There was no statistically significant pooled mean difference between the probiotics and the placebo-controlled groups on the reduction of insulin (-048 mu IU/ml, 95 % CI -134, 038 mu IU/ml; P=027) and HOMA-IR (pooled effect of -044, 95 % CI -157, 070; P=045). Meta-regression analysis identified that probiotics had significant effects on reduction of glucose, HbA1c, insulin and HOMA-IR in participants with diabetes, but not in participants with other risk factors. The present meta-analysis suggested that probiotics may be used as an important dietary supplement in reducing the glucose metabolic factors associated with diabetes.
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