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KMID : 0614620150650040215
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Korean Journal of Gastroenterology
2015 Volume.65 No. 4 p.215 ~ p.221
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Effects of Probiotics on Gut Microbiota in Patients with Inflammatory Bowel Disease: A Double-blind, Placebo-controlled Clinical Trial
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Shadnoush Mahdi
Hosseini Rahebeh Shaker
Khalilnezhad Ahad
Navai Lida
Goudarzi Hossein
Vaezjalali Maryam
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Abstract
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Background/Aims: Several clinical trials have revealed various advantages for probiotics in inflammatory bowel disease (IBD). The aim of this study was to further investigate the effects of probiotic yogurt consumption on gut microbiota in patients with this disease.
Methods: A total of 305 participants were divided into three groups; group A (IBD patients receiving probiotic yogurt; n=105), group B (IBD patients receiving placebo; n=105), and control group (healthy individuals receiving probiotic yogurt; n=95). Stool samples were collected both before and after 8 weeks of intervention; and population of Lactobacillus, Bifidobacterium and Bacteroides in the stool specimens was measured by Taqman real-time PCR method.
Results: By the end of the intervention, no significant variations in the mean weight and body mass index were observed between three groups (p>0.05). However, the mean numbers of Lactobacillus, Bifidobacterium, and Bacteroides in group A were significantly increased compared to group B (p＜0.001, p＜0.001, and p＜0.01, respectively). There were also significant differences in the mean numbers of either of three bacteria between group A and the healthy control group; however, these differences between two groups were observed both at baseline and the end of the intervention.
Conclusions: Consumption of probiotic yogurt by patients with IBD may help to improve intestinal function by increasing the number of probiotic bacteria in the intestine and colon. However, many more studies are required in order to prove the concept.
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KEYWORD
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Inflammatory bowel diseases, Microbiota, Probiotics
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