BACKGROUND: Imbalance of the intestinal microbiota is associated with gastrointestinal disease and autoimmune disease and metabolic syndrome. Analysis of the intestinal microbiota has recently progressed, and the association with inflammatory bowel disease has been reported at the species level. Such findings suggest that the recovery of homeostasis in the intestinal microbiota could cure inflammatory bowel disease. We aimed to search new probiotic candidates for inflammatory bowel disease through translational research by analysis of ulcerative colitis (UC) patients' intestinal microbiota and clarify the effects of them on inflammation. Here, we focused on Fusicatenibacter saccharivorans, which belongs to Clostridium subcluster XIVa and was successfully isolated and cultured in 2013. We analyzed the association of F. saccharivorans to UC patients' activity and inflammation for the first time. METHODS: Feces from UC patients and healthy controls were analyzed by 16S ribosomal RNA gene sequences. F. saccharivorans was administered to murine colitis model. Colitic lamina propria mononuclear cells from UC patients and mice were stimulated with F. saccharivorans. RESULTS: The whole fecal bacteria in active UC patients were less than that in quiescent UC patients. Furthermore, F. saccharivorans was decreased in active UC patients and increased in quiescent. The administration of F. saccharivorans improved murine colitis. F. saccharivorans induced interleukin 10 production by lamina propria mononuclear cells from not only colitis model mice but also UC patients. CONCLUSIONS: F. saccharivorans decreased in correlation to UC activity and suppresses intestinal inflammation. These results suggest that F. saccharivorans could lead to a novel UC treatment.
BACKGROUND: Imbalance of the intestinal microbiota is associated with gastrointestinal disease and autoimmune disease and metabolic syndrome. Analysis of the intestinal microbiota has recently progressed, and the association with inflammatory bowel disease has been reported at the species level. Such findings suggest that the recovery of homeostasis in the intestinal microbiota could cure inflammatory bowel disease. We aimed to search new probiotic candidates for inflammatory bowel disease through translational research by analysis of ulcerative colitis (UC) patients' intestinal microbiota and clarify the effects of them on inflammation. Here, we focused on Fusicatenibacter saccharivorans, which belongs to Clostridium subcluster XIVa and was successfully isolated and cultured in 2013. We analyzed the association of F. saccharivorans to UC patients' activity and inflammation for the first time. METHODS: Feces from UC patients and healthy controls were analyzed by 16S ribosomal RNA gene sequences. F. saccharivorans was administered to murinecolitis model. Colitic lamina propria mononuclear cells from UC patients and mice were stimulated with F. saccharivorans. RESULTS: The whole fecal bacteria in active UC patients were less than that in quiescent UC patients. Furthermore, F. saccharivorans was decreased in active UC patients and increased in quiescent. The administration of F. saccharivorans improved murinecolitis. F. saccharivorans induced interleukin 10 production by lamina propria mononuclear cells from not only colitis model mice but also UC patients. CONCLUSIONS:F. saccharivorans decreased in correlation to UC activity and suppresses intestinal inflammation. These results suggest that F. saccharivorans could lead to a novel UC treatment.
Authors: Harold J Boutte; Jacqueline Chen; Todd N Wylie; Kristine M Wylie; Yan Xie; Mackenzie Geisman; Anirudh Prabu; Vered Gazit; Phillip I Tarr; Marc S Levin; Brad W Warner; Nicholas O Davidson; Deborah C Rubin Journal: Am J Physiol Gastrointest Liver Physiol Date: 2021-11-24 Impact factor: 4.052
Authors: Isabel Prieto; Marina Hidalgo; Ana Belén Segarra; Ana María Martínez-Rodríguez; Antonio Cobo; Manuel Ramírez; Hikmate Abriouel; Antonio Gálvez; Magdalena Martínez-Cañamero Journal: PLoS One Date: 2018-01-02 Impact factor: 3.240