Impact of probiotics on gut microbiota composition and clinical symptoms of coeliac disease patients following gluten-free diet

• Published in: Contemporary clinical trials communications Vol. 35; p. 101201
• Main Authors: Soheilian Khorzoghi, Mona, Rostami-Nejad, Mohammad, Yadegar, Abbas, Dabiri, Hossein, Hadadi, Azam, Rodrigo, Luis
• Format: Journal Article
• Language: English
• Published: Elsevier Inc 01.10.2023; Elsevier
• Subjects: Clinical symptoms; Coeliac disease; Gluten-free diet; Intestinal microbiota; Probiotics; Gluten-free diet; Probiotics; Clinical symptoms; Coeliac disease; Intestinal microbiota
• ISSN: 2451-8654; 2451-8654
• DOI: 10.1016/j.conctc.2023.101201

Coeliac disease (CD) is associated with alterations in gut microbiota composition. This study evaluated the effects of probiotics on gut microbiota composition and clinical symptoms of treated CD patients. In this double-blind, placebo-controlled trial study, 31 CD patients that were randomly classified as probiotics (n = 15) and placebo (n = 16) groups received 109 colony-forming units/capsule for 12 weeks. Fecal samples were collected before and after probiotics, or placebo administration and the changes in intestinal microbiota were assessed by quantitative real-time PCR. Probiotic administration improved the patients' clinical symptoms when compared to the placebo group. Fatigue score was significantly reduced by the intake of probiotic supplements (P = 0.02). Except for Staphylococcus spp., the relative abundances of Bacteroidetes, Lactobacillus spp., Bifidobacterium spp., Clostridium cluster I, Enterobacteriaceae, and Firmicutes were higher in probiotics group. Accordingly, a 12-week multi-strain probiotic treatment regimen may modify the composition of intestinal microbiota and improve GI symptoms in CD patients. •Coeliac disease (CD) is associated with alterations in gut microbiota composition.•Probiotic administration improved the patients' clinical symptoms.•Probiotic administration modified CD patients' intestinal microbiota composition.