|
1
|
Liu S, Si C, Yu Y, Zhao G, Chen L, Zhao Y, Zhang Z, Li H, Chen Y, Min L, Zhang S, Zhu S. Multi-omics Analysis of Gut Microbiota and Metabolites in Rats With Irritable Bowel Syndrome. Front Cell Infect Microbiol 2019; 9:178. [PMID: 31192167 PMCID: PMC6549239 DOI: 10.3389/fcimb.2019.00178] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Accepted: 05/09/2019] [Indexed: 12/12/2022] Open
Abstract
Irritable bowel syndrome (IBS) is a common gastrointestinal dysfunctional disease. The pathophysiology of IBS is, however, largely unknown. This study aimed to determine whether evaluation of fecal metabolite and microbiota profiles may offer an opportunity to identify a novel pathophysiological target for IBS, and to reveal possible gut microbe–metabolite associations. By using gas chromatography coupled to time-of-flight mass spectrometry (GC-TOFMS) and 16S rRNA gene sequencing, we measured fecal metabolites and microbiota of the control and water avoidance stress (WAS)-induced IBS rats. We found a significantly differential metabolite profile between the IBS and control groups; a cluster of metabolites was also found to be significantly associated with the amount of defecations. Moreover, the WAS group exhibited a decreased alpha diversity of the microbial population as compared to the control group. However, the characteristics of gut microbiota could not differentiate the IBS group from the control group. Correlation of the metabolite level with the number of microbial genera showed no significant association between the control and IBS groups. This study provides a global perspective on metabolomics and microbiota profiling in WAS-induced IBS model and a theoretical basis for research on the pathophysiology of IBS.
Collapse
Affiliation(s)
- Si Liu
- Beijing Key Laboratory for Precancerous Lesion of Digestive Disease, Department of Gastroenterology, Beijing Friendship Hospital, National Clinical Research Center for Digestive Disease, Beijing Digestive Disease Center, Capital Medical University, Beijing, China
| | - Chaozeng Si
- Department of Operations and Information Management, China-Japan Friendship Hospital, Beijing, China
| | - Yang Yu
- Beijing Key Laboratory for Precancerous Lesion of Digestive Disease, Department of Gastroenterology, Beijing Friendship Hospital, National Clinical Research Center for Digestive Disease, Beijing Digestive Disease Center, Capital Medical University, Beijing, China
| | - Guiping Zhao
- Beijing Key Laboratory for Precancerous Lesion of Digestive Disease, Department of Gastroenterology, Beijing Friendship Hospital, National Clinical Research Center for Digestive Disease, Beijing Digestive Disease Center, Capital Medical University, Beijing, China
| | - Lei Chen
- Beijing Key Laboratory for Precancerous Lesion of Digestive Disease, Department of Gastroenterology, Beijing Friendship Hospital, National Clinical Research Center for Digestive Disease, Beijing Digestive Disease Center, Capital Medical University, Beijing, China
| | - Yu Zhao
- Beijing Key Laboratory for Precancerous Lesion of Digestive Disease, Department of Gastroenterology, Beijing Friendship Hospital, National Clinical Research Center for Digestive Disease, Beijing Digestive Disease Center, Capital Medical University, Beijing, China
| | - Zheng Zhang
- Beijing Key Laboratory for Precancerous Lesion of Digestive Disease, Department of Gastroenterology, Beijing Friendship Hospital, National Clinical Research Center for Digestive Disease, Beijing Digestive Disease Center, Capital Medical University, Beijing, China
| | - Hengcun Li
- Beijing Key Laboratory for Precancerous Lesion of Digestive Disease, Department of Gastroenterology, Beijing Friendship Hospital, National Clinical Research Center for Digestive Disease, Beijing Digestive Disease Center, Capital Medical University, Beijing, China
| | - Yang Chen
- MOE Key Laboratory of Bioinformatics, BNRist, Department of Automation, Bioinformatics Division, Center for Synthetic and Systems Biology, Tsinghua University, Beijing, China
| | - Li Min
- Beijing Key Laboratory for Precancerous Lesion of Digestive Disease, Department of Gastroenterology, Beijing Friendship Hospital, National Clinical Research Center for Digestive Disease, Beijing Digestive Disease Center, Capital Medical University, Beijing, China
| | - Shutian Zhang
- Beijing Key Laboratory for Precancerous Lesion of Digestive Disease, Department of Gastroenterology, Beijing Friendship Hospital, National Clinical Research Center for Digestive Disease, Beijing Digestive Disease Center, Capital Medical University, Beijing, China
| | - Shengtao Zhu
- Beijing Key Laboratory for Precancerous Lesion of Digestive Disease, Department of Gastroenterology, Beijing Friendship Hospital, National Clinical Research Center for Digestive Disease, Beijing Digestive Disease Center, Capital Medical University, Beijing, China
| |
Collapse
|
|
2
|
Abstract
The excretion of neuraminic acid-containing trisaccharides in the urine during the course of normal pregnancy was studied. Neuraminyl-lactose and neuraminyl-galactosyl-(l led to 4)-N-acetylglucosamine were identified, and their excretion patterns were analyzed by thin-layer and gas chromatography. A progressive increase in the outputs of these acidic oligosaccharides was observed during the course of pregnancy in all cases studied. Neuraminyl-lactose excretion increased threefold, from 13.7 +/- 1.75 to 37.1 +/- 2.56 mg/24 h, and neuraminyl-galactosyl-N-acetylglucosamine twofold, from 8.4 +/- 1.27 to 15.3 +/- 2.21 mg/24 h (Mean +/- S.E.).
Collapse
|