Abstract
BackgroundThis study was conducted to evaluate the effects of probiotic supplementation on metabolic profiles in diabetic patients with coronary heart disease (CHD).MethodsThis randomized, double-blind, placebo-controlled trial was performed among 60 diabetic patients with CHD, aged 40–85 years at a cardiology clinic in Kashan, Iran, from October 2017 through January 2018. Patients were randomly divided into two groups to take either probiotic supplements (n = 30) or placebo (n = 30) for 12 weeks. Fasting blood samples were taken at the beginning of the study and after the 12-week intervention to determine related markers.ResultsAfter 12-week intervention, probiotic supplementation significantly decreased fasting plasma glucose (β − 20.02 mg/dL; 95% CI − 33.86, − 6.17; P = 0.005), insulin (β − 2.09 µIU/mL; 95% CI − 3.77, − 0.41; P = 0.01), insulin resistance (β − 0.50; 95% CI − 0.96, − 0.03; P = 0.03) and total-/HDL-cholesterol ratio (β − 0.27; 95% CI − 0.52, − 0.03; P = 0.02), and significantly increased insulin sensitivity (β 0.008; 95% CI 0.001, 0.01; P = 0.02) and HDL-cholesterol levels (β 2.52 mg/dL; 95% CI 0.04, 5.00; P = 0.04) compared with the placebo. Moreover, probiotic supplementation led to a significant reduction in serum high sensitivity C-reactive protein (β − 0.88 mg/L; 95% CI − 1.39, − 0.38; P = 0.001), and a significant elevation in total antioxidant capacity (β 108.44 mmol/L; 95% CI 47.61, 169.27; P = 0.001) and total glutathione levels (β 45.15 µmol/L; 95% CI 5.82, 84.47; P = 0.02) compared with the placebo. Probiotic supplementation did not affect other metabolic profiles.ConclusionsOverall, we found that probiotic supplementation for 12 weeks had beneficial effects on glycemic control, HDL-cholesterol, total-/HDL-cholesterol ratio, biomarkers of inflammation and oxidative stress in diabetic patients with CHD.Trial registration Clinical trial registration number http://www.irct.ir: IRCT2017082733941N5
Highlights
This study was conducted to evaluate the effects of probiotic supplementation on metabolic profiles in diabetic patients with coronary heart disease (CHD)
Probiotic supplementation led to a significant reduction in serum high sensitivity C-reactive protein (β − 0.88 mg/L; 95% CI − 1.39, − 0.38; P = 0.001), and a significant elevation in total antioxidant capacity (β 108.44 mmol/L; 95% CI 47.61, 169.27; P = 0.001) and total glutathione levels (β 45.15 μmol/L; 95% CI 5.82, 84.47; P = 0.02) compared with the placebo
Overall, we found that probiotic supplementation for 12 weeks had beneficial effects on glycemic con‐ trol, HDL-cholesterol, total-/HDL-cholesterol ratio, biomarkers of inflammation and oxidative stress in diabetic patients with CHD
Summary
This study was conducted to evaluate the effects of probiotic supplementation on metabolic profiles in diabetic patients with coronary heart disease (CHD). We have documented that co-supplementation of 8 × 109 CFU/g probiotic, containing Lactobacillus acidophilus, Bifidobacterium bifidum, Lactobacillus reuteri, and Lactobacillus fermentum (each 2 × 109) and 50,000 IU vitamin D every 2 weeks for 12 weeks to T2DM people with CHD had beneficial effects on mental health parameters, inflammatory markers, total antioxidant capacity, glycemic control and HDL-cholesterol, there was no effect on other parameters of metabolic profiles [8] In another investigation, taking probiotic, containing 112.5 × 109 CFU/capsule of eight strains of lactic acid bacteria, for 8 weeks by women with GDM significantly modulated inflammatory markers, insulin and insulin resistance, did not affect fasting glucose and HbA1c [9]. Discrepancies in these findings may be due to differences in study design, characteristics of study populations, dosage of probiotic and synbiotic used, type of bacteria used, and the duration of the intervention
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