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  • Title: Gut microbiota signatures and clinical manifestations in celiac disease children at onset: a pilot study.
    Author: Di Biase AR, Marasco G, Ravaioli F, Dajti E, Colecchia L, Righi B, D'Amico V, Festi D, Iughetti L, Colecchia A.
    Journal: J Gastroenterol Hepatol; 2021 Feb; 36(2):446-454. PubMed ID: 32666516.
    Abstract:
    BACKGROUND AND AIM: Recent researches have shown an altered gut microbiota in celiac disease (CD) patients compared with healthy controls (HCs). This study aims to evaluate the composition of the microbiota of CD children at onset and the relationship between bacterial abundances and symptoms. METHODS: Celiac disease patients were consecutively enrolled at a pediatric unit referring for suspected CD. HCs were also included in the study. Stool and duodenal samples were collected and evaluated by a high taxonomic fingerprint microbiota array. RESULTS: Thirty-seven subjects enrolled: 21 CD patients and 16 HCs. Fourteen subjects were male (38%). The mean age was 75 months (standard deviation 31.5) for CD patients and 71 months (standard deviation 34.9) for HCs. Duodenal microbiota of CD patients showed a dominance of Enterobacteriaceae and subdominance of Bacteroidetes/Streptococcus. Stool microbiota showed a lower abundance of Bacteroides-Prevotella (P = 0.013), Akkermansia (P = 0.002), and Staphylococcaceae (P = 0.001) in CD patients compared with HC. At symptoms level, an increased mean relative abundance of Bacillaceae and Enterobaeriaceae in patients with abdominal pain (P = 0.007 and P = 0.010) was found. CD patients with diarrhea had reduced mean relative abundance of Clostridium cluster XIVa (P = 0.044) and Akkermansia (P = 0.033) and an increase in Bacillaceae (P = 0.048) and Fusobacterium (P = 0.048). CONCLUSIONS: Gut microbiota of CD children at disease onset is different from that of HC. Pro-inflammatory microbiota imbalances were associated with CD symptoms. Further studies are needed to assess whether dysbiosis is associated with CD early onset and symptoms.
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