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Takei H, Narushima S, Suzuki M, Kakiyama G, Sasaki T, Murai T, Yamashiro Y, Nittono H. Characterization of long-chain fatty acid-linked bile acids: a major conjugation form of 3β-hydroxy bile acids in feces. J Lipid Res 2022; 63:100275. [PMID: 36089004 PMCID: PMC9587409 DOI: 10.1016/j.jlr.2022.100275] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 09/05/2022] [Accepted: 09/06/2022] [Indexed: 11/26/2022] Open
Abstract
Although most bile acids (BAs) in feces are present in noncovalent forms that can be extracted with ethanol, non-negligible amounts of saponifiable BAs are also present. It is a major concern that such saponifiable BAs are routinely omitted from fecal BA measurements. We compared the BA profiles of healthy stools that were obtained with/without alkaline hydrolysis and found that as much as 29.7% (2.1–67.7%) of total BAs were saponifiable. Specifically, alkaline treatment led to significant elevations of isodeoxycholic acid (isoDCA) and isolithocholic acid (isoLCA) concentrations, suggesting that considerable proportions of isoDCA and isoLCA were esterified. Precursor ion scan data from LC/MS suggested the presence of long-chain FA-linked BAs. We chemically synthesized a series of fatty acid 3β-acyl conjugates of isoDCA and isoLCA as analytical standards and analyzed their fecal profiles from newborns to adults (n = 64) by LC/MS. FA-conjugated isobile acids (FA-isoBAs) were constantly present from 2 years of age to adulthood. C16- and C18-chain FA-isoBA esters were predominantly found regardless of age, but small amounts of acetic acid esters were also found. FA-isoBA concentrations were not correlated to fecal FA concentrations. Interestingly, there were some adults who did not have FA-isoBAs. Gut bacteria involved in the production of FA-isoBAs have not been identified yet. The present study provides insight into the establishment of early gut microbiota and the interactive development of esterified BAs.The contribution of FA-isoBAs to gut physiology and their role in pathophysiologic conditions such as inflammatory bowel disease are currently under investigation.
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Affiliation(s)
- Hajime Takei
- Junshin Clinic Bile Acid Institute, 2-1-24 Haramachi, Meguro-ku, Tokyo 152-0011, Japan.
| | - Seiko Narushima
- RIKEN Center for Integrative Medical Sciences, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama City, Kanagawa 230-0045, Japan
| | - Mitsuyoshi Suzuki
- Department of Pediatrics, Juntendo University, Faculty of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Genta Kakiyama
- Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, 1201 Broad Rock Blvd, Richmond, VA 23249, USA
| | - Takahiro Sasaki
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, 1757 Kanazawa, Tohbetsu-cho, Ishikari, Hokkaido 061-0293, Japan
| | - Tsuyoshi Murai
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, 1757 Kanazawa, Tohbetsu-cho, Ishikari, Hokkaido 061-0293, Japan
| | - Yuichiro Yamashiro
- Probiotics Research Laboratory, Juntendo University Graduate School of Medicine, 3rd floor, Hongo-Asakaze Bldg., 2-9-8 Hongo Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hiroshi Nittono
- Junshin Clinic Bile Acid Institute, 2-1-24 Haramachi, Meguro-ku, Tokyo 152-0011, Japan
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Chen L, Jiao T, Liu W, Luo Y, Wang J, Guo X, Tong X, Lin Z, Sun C, Wang K, He Y, Zhang Y, Xu H, Wang J, Zuo J, Ding Q, He S, Gonzalez FJ, Xie C. Hepatic cytochrome P450 8B1 and cholic acid potentiate intestinal epithelial injury in colitis by suppressing intestinal stem cell renewal. Cell Stem Cell 2022; 29:1366-1381.e9. [PMID: 36055192 PMCID: PMC10673678 DOI: 10.1016/j.stem.2022.08.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 06/08/2022] [Accepted: 08/11/2022] [Indexed: 11/03/2022]
Abstract
Although disrupted bile acid (BA) homeostasis is implicated in inflammatory bowel disease (IBD), the role of hepatic BA metabolism in the pathogenesis of colitis is poorly understood. Here, we found that cholic acid (CA) levels were increased in patients and mice. Cytochrome P450 8B1 (CYP8B1), which synthesizes CA, was induced in livers of colitic mice. CA-treated or liver Cyp8b1-overexpressing mice developed more severe colitis with compromised repair of the mucosal barrier, whereas Cyp8b1-knockout mice were resistant to colitis. Mechanistically, CA inhibited peroxisome proliferator-activated receptor alpha (PPARα), resulting in impeded fatty acid oxidation (FAO) and impaired Lgr5+ intestinal stem cell (ISC) renewal. A PPARα agonist restored FAO and improved Lgr5+ ISC function. Activation of the farnesoid X receptor (FXR) suppressed liver CYP8B1 expression and ameliorated colitis in mice. This study reveals a connection between the hepatic CYP8B1-CA axis and colitis via regulating intestinal epithelial regeneration, suggesting that BA-based strategies might be beneficial in IBD treatment.
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Affiliation(s)
- Li Chen
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, P.R. China; University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Tingying Jiao
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, P.R. China
| | - Weiwei Liu
- Department of Laboratory Medicine, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, P.R. China; Department of Laboratory Medicine and Central Laboratory, Shanghai Tenth People's Hospital, Tongji University, Shanghai 200070, P.R. China
| | - Yuhong Luo
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Jue Wang
- Department of Nephrology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, P.R. China
| | - Xiaozhen Guo
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, P.R. China
| | - Xiao Tong
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, P.R. China; University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Zemin Lin
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, P.R. China
| | - Chuying Sun
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing 210029, P.R. China
| | - Kanglong Wang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, P.R. China
| | - Yifan He
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, P.R. China; University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Yuwei Zhang
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, P.R. China
| | - Hualing Xu
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing 210029, P.R. China
| | - Jiawen Wang
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai 200241, P.R. China
| | - Jianping Zuo
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, P.R. China; University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Qiurong Ding
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, P.R. China
| | - Shijun He
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, P.R. China; University of Chinese Academy of Sciences, Beijing 100049, P.R. China.
| | - Frank J Gonzalez
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA.
| | - Cen Xie
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, P.R. China; University of Chinese Academy of Sciences, Beijing 100049, P.R. China.
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53
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Menees KB, Otero BA, Tansey MG. Microbiome influences on neuro-immune interactions in neurodegenerative disease. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2022; 167:25-57. [PMID: 36427957 DOI: 10.1016/bs.irn.2022.07.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Mounting evidence points to a role for the gut microbiome in a wide range of central nervous system diseases and disorders including depression, multiple sclerosis, Alzheimer's disease, Parkinson's disease, and autism spectrum disorder. Moreover, immune system involvement has also been implicated in these diseases, specifically with inflammation being central to their pathogenesis. In addition to the reported changes in gut microbiome composition and altered immune states in many neurological diseases, how the microbiome and the immune system interact to influence disease onset and progression has recently garnered much attention. This chapter provides a review of the literature related to gut microbiome influences on neuro-immune interactions with a particular focus on neurological diseases. Gut microbiome-derived mediators, including short-chain fatty acids and other metabolites, lipopolysaccharide, and neurotransmitters, and their impact on neuro-immune interactions as well as routes by which these interactions may occur are also discussed.
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Affiliation(s)
- Kelly B Menees
- Department of Neuroscience, Center for Translational Research in Neurodegenerative Disease, College of Medicine, University of Florida, Gainesville, FL, United States
| | - Brittney A Otero
- Department of Neuroscience, Center for Translational Research in Neurodegenerative Disease, College of Medicine, University of Florida, Gainesville, FL, United States
| | - Malú Gámez Tansey
- Department of Neuroscience, Center for Translational Research in Neurodegenerative Disease, College of Medicine, University of Florida, Gainesville, FL, United States; Norman Fixel Institute for Neurological Diseases, University of Florida Health, Gainesville, FL, United States.
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Li DK, Chaudhari SN, Lee Y, Sojoodi M, Adhikari AA, Zukerberg L, Shroff S, Barrett SC, Tanabe K, Chung RT, Devlin AS. Inhibition of microbial deconjugation of micellar bile acids protects against intestinal permeability and liver injury. SCIENCE ADVANCES 2022; 8:eabo2794. [PMID: 36026454 PMCID: PMC9417178 DOI: 10.1126/sciadv.abo2794] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 07/13/2022] [Indexed: 06/15/2023]
Abstract
Altered host-microbe interactions and increased intestinal permeability have been implicated in disease pathogenesis. However, the mechanisms by which intestinal microbes affect epithelial barrier integrity remain unclear. Here, we investigate the impact of bacterial metabolism of host-produced bile acid (BA) metabolites on epithelial barrier integrity. We observe that rats fed a choline-deficient, l-amino acid-defined, high-fat diet (CDAHFD) exhibit reduced intestinal abundance of host-produced conjugated BAs at early time points, coinciding with increased gut permeability. We show that in vitro, conjugated BAs protect gut epithelial monolayers from damage caused by bacterially produced unconjugated BAs through micelle formation. We then demonstrate that inhibition of bacterial BA deconjugation with a small-molecule inhibitor prevents the development of pathologic intestinal permeability and hepatic inflammation in CDAHFD-fed rats. Our study identifies a signaling-independent, physicochemical mechanism for conjugated BA-mediated protection of epithelial barrier function and suggests that rational manipulation of microbial BA metabolism could be leveraged to regulate gut barrier integrity.
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Affiliation(s)
- Darrick K. Li
- Liver Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Snehal N. Chaudhari
- Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA
| | - Yoojin Lee
- Liver Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Mozhdeh Sojoodi
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Arijit A. Adhikari
- Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA
| | - Lawrence Zukerberg
- Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Stuti Shroff
- Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Stephen Cole Barrett
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Kenneth Tanabe
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Raymond T. Chung
- Liver Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - A. Sloan Devlin
- Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA
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55
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Nakajima A, Fujimaki M, Arai Y, Emori K. Safety and Efficacy of Elobixibat, an Ileal Bile Acid Transporter Inhibitor, in Elderly Patients With Chronic Idiopathic Constipation According to Administration Time: Interim Analysis of Post-marketing Surveillance. J Neurogastroenterol Motil 2022; 28:431-441. [PMID: 35799237 PMCID: PMC9274463 DOI: 10.5056/jnm20263] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 09/03/2021] [Accepted: 11/24/2021] [Indexed: 11/26/2022] Open
Abstract
Background/Aims Elobixibat, an ileal bile acid transporter (apical sodium-dependent bile acid transporter) inhibitor, was recently launched in Japan for the treatment of chronic idiopathic constipation. We conducted an interim analysis of post-marketing surveillance to evaluate the safety and efficacy of elobixibat in elderly patients with chronic constipation and compared the efficacy according to administration time. Methods Safety and efficacy outcomes were evaluated through patient interviews for 4 weeks. Results Adverse drug reactions (ADRs) were observed in 5.24% of the 1049 patients analyzed; diarrhea (2.19%) and abdominal pain (1.81%) were the most common. A serious ADR of death was reported in one patient (0.10%). The incidence of ADRs in the ≥ 65-year old or ≥ 75-year-old subpopulation was similar to that in the total patient population. Mean bowel movements per week significantly increased from 2.9 ± 2.5 at baseline to 5.0 ± 3.1 (P < 0.001) at Week 2 and 5.3 ± 2.6 (P < 0.001) at Week 4. The mean Bristol Stool Form Scale score significantly increased from 2.3 ± 1.4 at baseline to 3.8 ± 1.3 (P < 0.001) at Week 2 and 3.9 ± 1.1 at Week 4 (P < 0.001). Bowel movements significantly increased in the elderly population and subpopulations receiving elobixibat before breakfast, lunch, or dinner. The median time to bowel movement was 5 hours. Conclusion The results suggested that elobixibat was well-tolerated and efficacious in elderly patients with chronic constipation and can be administered before any meals.
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Affiliation(s)
- Atsushi Nakajima
- Department of Gastroenterology and Hepatology, Yokohama City University School of Medicine, Yokohama, Japan
| | - Mio Fujimaki
- Medical Department, EA Pharma Co, Ltd, Tokyo, Japan
| | - Yuki Arai
- Medical Department, EA Pharma Co, Ltd, Tokyo, Japan
| | - Kento Emori
- Clinical Development Department, EA Pharma Co, Ltd, Tokyo, Japan
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56
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Liu H, Kohmoto O, Sakaguchi A, Hori S, Tochigi M, Tada K, Lee Y, Kikuchi K, Ishizuka S. Taurocholic acid, a primary 12α-hydroxylated bile acid, induces leakiness in the distal small intestine in rats. Food Chem Toxicol 2022; 165:113136. [PMID: 35584729 DOI: 10.1016/j.fct.2022.113136] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 04/18/2022] [Accepted: 05/12/2022] [Indexed: 11/15/2022]
Abstract
A high-fat diet increases 12α-hydroxylated (12αOH) bile acid (BA) secretion in rats, and secondary BAs are responsible for the leaky gut. This study aimed to examine the role of primary 12αOH BAs in gut barrier impairment in rats using dietary cholic acid (CA) supplementation (0.5 g/kg diet). The CA diet increased the 12αOH BAs concentrations in the small and large intestine, accompanied by gut barrier impairment. Based on the luminal 12αOH BAs concentrations, ex vivo gut leakiness was determined. Deoxycholic acid increased permeability in the large intestine, whereas taurocholic acid (TCA) increased the ileal permeability, but not jejunal permeability. A Rho kinase inhibitor attenuated TCA-induced ileal permeability. Administration of vancomycin, which abolishes secondary BAs, did not influence the gut leakiness induced by the CA diet. Changes in the gut permeation marker in the tail vein blood suggested the possibility that the CA-induced leakiness occurred in the small intestine. The CA diet enhanced the phosphorylation of myosin light chain 2 and reduced claudins expressions in rat ileal epithelia. Reductions in barrier function-related genes were observed in the ileum, but not in the colon of the CA-fed rats. Overall, the present study demonstrated the significance of TCA in proximal gut leakiness.
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Affiliation(s)
- Hongxia Liu
- Division of Fundamental Agriscience Research, Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589, Japan
| | - Ohji Kohmoto
- Division of Fundamental Agriscience Research, Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589, Japan
| | - Ayana Sakaguchi
- Division of Fundamental Agriscience Research, Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589, Japan
| | - Shota Hori
- Division of Fundamental Agriscience Research, Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589, Japan
| | - Misuzu Tochigi
- Division of Fundamental Agriscience Research, Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589, Japan
| | - Koji Tada
- Division of Fundamental Agriscience Research, Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589, Japan
| | - Yeonmi Lee
- Lee Gil Ya Cancer and Diabetes Institute, Gachon University, 155, Gaetbeol-ro, Yeonsu-gu, Incheon, 21999, Republic of Korea
| | - Keidai Kikuchi
- Division of Fundamental Agriscience Research, Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589, Japan
| | - Satoshi Ishizuka
- Division of Fundamental Agriscience Research, Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589, Japan.
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Thompson RJ, Arnell H, Artan R, Baumann U, Calvo PL, Czubkowski P, Dalgic B, D'Antiga L, Durmaz Ö, Fischler B, Gonzalès E, Grammatikopoulos T, Gupte G, Hardikar W, Houwen RHJ, Kamath BM, Karpen SJ, Kjems L, Lacaille F, Lachaux A, Lainka E, Mack CL, Mattsson JP, McKiernan P, Özen H, Rajwal SR, Roquelaure B, Shagrani M, Shteyer E, Soufi N, Sturm E, Tessier ME, Verkade HJ, Horn P. Odevixibat treatment in progressive familial intrahepatic cholestasis: a randomised, placebo-controlled, phase 3 trial. Lancet Gastroenterol Hepatol 2022; 7:830-842. [DOI: 10.1016/s2468-1253(22)00093-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 03/14/2022] [Accepted: 03/17/2022] [Indexed: 12/12/2022]
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58
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Reduced Cytokine Tumour Necrosis Factor by Pharmacological Intervention in a Preclinical Study. Biomolecules 2022; 12:biom12070877. [PMID: 35883432 PMCID: PMC9313251 DOI: 10.3390/biom12070877] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 06/15/2022] [Accepted: 06/22/2022] [Indexed: 02/04/2023] Open
Abstract
Recent preclinical studies in our laboratory have shown that the bile acid profile is altered during diabetes development and such alteration has been linked to the diabetes-associated inflammatory profile. Hence, this study aimed to investigate if the first-line antidiabetic drug metformin will alter the bile acid profile and diabetes-associated inflammation in a murine model of pre-type 2 diabetes. C57 mice were randomly allocated into three equal groups of eight. Group One was given a low-fat diet (LFD), Group Two was given a high-fat diet (HFD), and Group Three was given an HFD and, upon prediabetes confirmation, daily oral metformin for one month. Blood glucose, glycated haemoglobin, drug concentrations in tissues and faeces, and the inflammatory and bile acid profiles were measured. Metformin showed wide tissue distribution and was also present in faeces. The bile acid profile showed significant alteration due to prediabetes, and although metformin did not completely normalize it, it did exert significant effects on both the bile acid and the inflammatory profiles, suggesting a direct and, to some extent, positive impact, particularly on the diabetes-associated inflammatory profile.
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Wells JM, Gao Y, de Groot N, Vonk MM, Ulfman L, van Neerven RJJ. Babies, Bugs, and Barriers: Dietary Modulation of Intestinal Barrier Function in Early Life. Annu Rev Nutr 2022; 42:165-200. [PMID: 35697048 DOI: 10.1146/annurev-nutr-122221-103916] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The intestinal barrier is essential in early life to prevent infection, inflammation, and food allergies. It consists of microbiota, a mucus layer, an epithelial layer, and the immune system. Microbial metabolites, the mucus, antimicrobial peptides, and secretory immunoglobulin A (sIgA) protect the intestinal mucosa against infection. The complex interplay between these functionalities of the intestinal barrier is crucial in early life by supporting homeostasis, development of the intestinal immune system, and long-term gut health. Exclusive breastfeeding is highly recommended during the first 6 months. When breastfeeding is not possible, milk-based infant formulas are the only safe alternative. Breast milk contains many bioactive components that help to establish the intestinal microbiota and influence the development of the intestinal epithelium and the immune system. Importantly, breastfeeding lowers the risk for intestinal and respiratory tract infections. Here we review all aspects of intestinal barrier function and the nutritional components that impact its functionality in early life, such as micronutrients, bioactive milk proteins, milk lipids, and human milk oligosaccharides. These components are present in breast milk and can be added to milk-based infant formulas to support gut health and immunity. Expected final online publication date for the Annual Review of Nutrition, Volume 42 is August 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
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Affiliation(s)
- Jerry M Wells
- Host Microbe Interactomics, Wageningen University and Research, Wageningen, The Netherlands
| | - Yifan Gao
- Cell Biology and Immunology, Wageningen University and Research, Wageningen, The Netherlands
| | | | | | | | - R J Joost van Neerven
- Cell Biology and Immunology, Wageningen University and Research, Wageningen, The Netherlands.,FrieslandCampina, Amersfoort, The Netherlands;
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Cheng H, Liu J, Zhang D, Wang J, Tan Y, Feng W, Peng C. Ginsenoside Rg1 Alleviates Acute Ulcerative Colitis by Modulating Gut Microbiota and Microbial Tryptophan Metabolism. Front Immunol 2022; 13:817600. [PMID: 35655785 PMCID: PMC9152015 DOI: 10.3389/fimmu.2022.817600] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 04/14/2022] [Indexed: 12/19/2022] Open
Abstract
Ulcerative colitis (UC) is a chronic and recurrent inflammatory disorder in the gastrointestinal tract. Here, we examined the pharmacological effects of ginsenoside Rg1, a natural compound with low bioavailability, on the acute experimental colitis mice induced by dextran sulfate sodium (DSS) and explored underlying mechanisms. Acute UC was induced in C57BL/6 mice by 2.5% DSS for 7 days, meanwhile, 2 mg/10 g b.w. ginsenoside Rg1 was administrated to treat the mice. Body weight, colon length, colon tissue pathology, and colon tissue inflammatory cytokines were assessed. The composition structure of gut microbiota was profiled using 16s rRNA sequencing. Global metabolomic profiling of the feces was performed, and tryptophan and its metabolites in the serum were detected. The results showed that Rg1 significantly ameliorated DSS-induced colonic injury and colonic inflammation. In addition, Rg1 also partly reversed the imbalance of gut microbiota composition caused by DSS. Rg1 intervention can regulate various metabolic pathways of gut microbiota such as valine, leucine, and isoleucine biosynthesis and vitamin B6 metabolism and the most prominent metabolic alteration was tryptophan metabolism. DSS decreased the levels of tryptophan metabolites in the serum, including indole-3-carboxaldehyde, indole-3-lactic acid, 3-indolepropionic acid, and niacinamide and Rg1 can increase the levels of these metabolites. In conclusion, the study discovered that Rg1 can protect the intestinal barrier and alleviate colon inflammation in UC mice, and the underlying mechanism is closely related to the regulation of gut microbiota composition and microbial tryptophan metabolism.
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Affiliation(s)
- Hao Cheng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Juan Liu
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Dandan Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jing Wang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yuzhu Tan
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China.,The Ministry of Education Key Laboratory of Standardization of Chinese Herbal Medicine, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Wuwen Feng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China.,The Ministry of Education Key Laboratory of Standardization of Chinese Herbal Medicine, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Cheng Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China.,The Ministry of Education Key Laboratory of Standardization of Chinese Herbal Medicine, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
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61
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Li Y, Lee AQ, Lu Z, Sun Y, Lu JW, Ren Z, Zhang N, Liu D, Gong Z. Systematic Characterization of the Disruption of Intestine during Liver Tumor Progression in the xmrk Oncogene Transgenic Zebrafish Model. Cells 2022; 11:cells11111810. [PMID: 35681505 PMCID: PMC9180660 DOI: 10.3390/cells11111810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 05/29/2022] [Accepted: 05/30/2022] [Indexed: 01/27/2023] Open
Abstract
The crosstalk between tumors and their local microenvironment has been well studied, whereas the effect of tumors on distant tissues remains understudied. Studying how tumors affect other tissues is important for understanding the systemic effect of tumors and for improving the overall health of cancer patients. In this study, we focused on the changes in the intestine during liver tumor progression, using a previously established liver tumor model through inducible expression of the oncogene xmrk in zebrafish. Progressive disruption of intestinal structure was found in the tumor fish, displaying villus damage, thinning of bowel wall, increase in goblet cell number, decrease in goblet cell size and infiltration of eosinophils, most of which were observed phenotypes of an inflammatory intestine. Intestinal epithelial cell renewal was also disrupted, with decreased cell proliferation and increased cell death. Analysis of intestinal gene expression through RNA-seq suggested deregulation of genes related to intestinal function, epithelial barrier and homeostasis and activation of pathways in inflammation, epithelial mesenchymal transition, extracellular matrix organization, as well as hemostasis. Gene set enrichment analysis showed common gene signatures between the intestine of liver tumor fish and human inflammatory bowel disease, the association of which with cancer has been recently noticed. Overall, this study represented the first systematic characterization of the disruption of intestine under the liver tumor condition and suggested targeting intestinal inflammation as a potential approach for managing cancer cachexia.
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Affiliation(s)
- Yan Li
- Department of Biological Sciences, National University of Singapore, Singapore 117543, Singapore; (A.Q.L.); (Z.L.); (Y.S.); (J.-W.L.); (Z.R.); (N.Z.)
- Correspondence: (Y.L.); (Z.G.)
| | - Ai Qi Lee
- Department of Biological Sciences, National University of Singapore, Singapore 117543, Singapore; (A.Q.L.); (Z.L.); (Y.S.); (J.-W.L.); (Z.R.); (N.Z.)
| | - Zhiyuan Lu
- Department of Biological Sciences, National University of Singapore, Singapore 117543, Singapore; (A.Q.L.); (Z.L.); (Y.S.); (J.-W.L.); (Z.R.); (N.Z.)
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Yuxi Sun
- Department of Biological Sciences, National University of Singapore, Singapore 117543, Singapore; (A.Q.L.); (Z.L.); (Y.S.); (J.-W.L.); (Z.R.); (N.Z.)
- Department of Biology, Southern University of Science and Technology, Shenzhen 518055, China;
| | - Jeng-Wei Lu
- Department of Biological Sciences, National University of Singapore, Singapore 117543, Singapore; (A.Q.L.); (Z.L.); (Y.S.); (J.-W.L.); (Z.R.); (N.Z.)
| | - Ziheng Ren
- Department of Biological Sciences, National University of Singapore, Singapore 117543, Singapore; (A.Q.L.); (Z.L.); (Y.S.); (J.-W.L.); (Z.R.); (N.Z.)
| | - Na Zhang
- Department of Biological Sciences, National University of Singapore, Singapore 117543, Singapore; (A.Q.L.); (Z.L.); (Y.S.); (J.-W.L.); (Z.R.); (N.Z.)
- Department of Biology, Southern University of Science and Technology, Shenzhen 518055, China;
| | - Dong Liu
- Department of Biology, Southern University of Science and Technology, Shenzhen 518055, China;
| | - Zhiyuan Gong
- Department of Biological Sciences, National University of Singapore, Singapore 117543, Singapore; (A.Q.L.); (Z.L.); (Y.S.); (J.-W.L.); (Z.R.); (N.Z.)
- Correspondence: (Y.L.); (Z.G.)
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62
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Lei X, Teng W, Fan Y, Zhu Y, Yao L, Li Y, Zhu S. The protective effects of HIF-1α activation on sepsis induced intestinal mucosal barrier injury in rats model of sepsis. PLoS One 2022; 17:e0268445. [PMID: 35576220 PMCID: PMC9109928 DOI: 10.1371/journal.pone.0268445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 04/29/2022] [Indexed: 11/18/2022] Open
Abstract
The integrity of the intestinal barrier is critical for protecting the host against the pathogen. The role of hypoxia-inducible factor-1α (HIF-1α) in the intestinal barrier disfunction related to sepsis remained unclear. The purpose of the present study is to investigate the role of HIF-1α on oxidative damage, the intestinal mucosal permeability, structural and morphological changes during sepsis. Twenty-four Sprague Dawley (SD) rats were randomly divided into four groups of 6 rats each: the sham group (sham), sepsis group (subjected to cecal ligation and perforation, CLP), sepsis + DMOG group (40 mg/kg of DMOG by intraperitoneal injection for 7 consecutive days before CLP), and sepsis + BAY 87–2243 group (9 mg/kg of BAY 87–2243 orally administered for 3 consecutive days before CLP). Sepsis increased plasma levels of inflammatory mediators, oxidative stress markers and HIF-1α expression; caused pathological damage; increased permeability (P < 0.05); and decreased TJ protein expression in the intestinal mucosa of rats with sepsis (P < 0.05). The addition of DMOG up-regulated HIF-1α, then decreased the plasma levels of inflammatory mediators, oxidative stress markers, alleviated pathological damage to the intestinal mucosa and decreased intestinal permeability (P < 0.05); while BAY 87–2243 treatment had the opposite effects. Our findings showed that HIF-1α protects the intestinal barrier function of septic rats by inhibiting intestinal inflammation and oxidative damage, our results provide a novel insight for developing sepsis treatment.
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Affiliation(s)
- Xiuzhen Lei
- Department of Anesthesiology, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Wenbin Teng
- Department of Anesthesiology, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Ying Fan
- Department of Anesthesiology, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yeke Zhu
- Department of Anesthesiology, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Liuxu Yao
- Department of Anesthesiology, Shaoxing People’s Hospital, Shaoxing University, Zhejiang, China
| | - Yuhong Li
- Department of Anesthesiology, Shulan (Hangzhou) Hospital, Shulan International Medical College, Zhejiang Shuren University, Hangzhou, Zhejiang, China
- * E-mail: (YL); (SZ)
| | - Shengmei Zhu
- Department of Anesthesiology, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
- * E-mail: (YL); (SZ)
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63
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Oncel S, Basson MD. Gut homeostasis, injury, and healing: New therapeutic targets. World J Gastroenterol 2022; 28:1725-1750. [PMID: 35633906 PMCID: PMC9099196 DOI: 10.3748/wjg.v28.i17.1725] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 12/12/2021] [Accepted: 03/27/2022] [Indexed: 02/06/2023] Open
Abstract
The integrity of the gastrointestinal mucosa plays a crucial role in gut homeostasis, which depends upon the balance between mucosal injury by destructive factors and healing via protective factors. The persistence of noxious agents such as acid, pepsin, nonsteroidal anti-inflammatory drugs, or Helicobacter pylori breaks down the mucosal barrier and injury occurs. Depending upon the size and site of the wound, it is healed by complex and overlapping processes involving membrane resealing, cell spreading, purse-string contraction, restitution, differentiation, angiogenesis, and vasculogenesis, each modulated by extracellular regulators. Unfortunately, the gut does not always heal, leading to such pathology as peptic ulcers or inflammatory bowel disease. Currently available therapeutics such as proton pump inhibitors, histamine-2 receptor antagonists, sucralfate, 5-aminosalicylate, antibiotics, corticosteroids, and immunosuppressants all attempt to minimize or reduce injury to the gastrointestinal tract. More recent studies have focused on improving mucosal defense or directly promoting mucosal repair. Many investigations have sought to enhance mucosal defense by stimulating mucus secretion, mucosal blood flow, or tight junction function. Conversely, new attempts to directly promote mucosal repair target proteins that modulate cytoskeleton dynamics such as tubulin, talin, Ehm2, filamin-a, gelsolin, and flightless I or that proteins regulate focal adhesions dynamics such as focal adhesion kinase. This article summarizes the pathobiology of gastrointestinal mucosal healing and reviews potential new therapeutic targets.
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Affiliation(s)
- Sema Oncel
- Department of Biomedical Sciences, University of North Dakota School of Medicine and Health Sciences, Grand Forks, ND 58202, United States
| | - Marc D Basson
- Department of Biomedical Sciences, University of North Dakota School of Medicine and Health Sciences, Grand Forks, ND 58202, United States
- Department of Surgery, University of North Dakota School of Medicine and Health Sciences, Grand Forks, ND 58202, United States
- Department of Pathology, University of North Dakota School of Medicine and Health Sciences, Grand Forks, ND 58202, United States
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64
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Gupta B, Rai R, Oertel M, Raeman R. Intestinal Barrier Dysfunction in Fatty Liver Disease: Roles of Microbiota, Mucosal Immune System, and Bile Acids. Semin Liver Dis 2022; 42:122-137. [PMID: 35738255 PMCID: PMC9307091 DOI: 10.1055/s-0042-1748037] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) describes a spectrum of progressive liver diseases ranging from simple steatosis to steatohepatitis and fibrosis. Globally, NAFLD is the leading cause of morbidity and mortality associated with chronic liver disease, and NAFLD patients are at a higher risk of developing cirrhosis and hepatocellular carcinoma. While there is a consensus that inflammation plays a key role in promoting NAFLD progression, the underlying mechanisms are not well understood. Recent clinical and experimental evidence suggest that increased hepatic translocation of gut microbial antigens, secondary to diet-induced impairment of the intestinal barrier may be important in driving hepatic inflammation in NAFLD. Here, we briefly review various endogenous and exogenous factors influencing the intestinal barrier and present recent advances in our understanding of cellular and molecular mechanisms underlying intestinal barrier dysfunction in NAFLD.
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Affiliation(s)
- Biki Gupta
- Division of Experimental Pathology, Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Ravi Rai
- Division of Experimental Pathology, Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Michael Oertel
- Division of Experimental Pathology, Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania,Pittsburgh Liver Research Center, University of Pittsburgh Medical Center and University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania,McGowan Institute for Regenerative Medicine, University of Pittsburgh Medical Center and University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Reben Raeman
- Division of Experimental Pathology, Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania,Pittsburgh Liver Research Center, University of Pittsburgh Medical Center and University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
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65
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Camilleri M. Bile acid detergency: permeability, inflammation, and effects of sulfation. Am J Physiol Gastrointest Liver Physiol 2022; 322:G480-G488. [PMID: 35258349 PMCID: PMC8993532 DOI: 10.1152/ajpgi.00011.2022] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 02/23/2022] [Accepted: 02/23/2022] [Indexed: 01/31/2023]
Abstract
Bile acids are amphipathic, detergent molecules. The detergent effects of di-α-hydroxy-bile acids are relevant to several colonic diseases. The aims were to review the concentrations of bile acids reaching the human colon in health and disease, the molecular structure of bile acids that determine detergent functions and the relationship to human diseases (neuroendocrine tumors, microscopic colitis, active celiac disease, and ulcerative colitis, Crohn's disease and ileal resection), the relationship to bacterial uptake into the mucosa, mucin depletion, and epithelial damage, the role of bile acids in mucosal inflammation and microscopic colitis, and the role of sulfation of bile salts in detoxification or prevention of the detergent effects of bile acids. The concentrations of bile acids reaching the human colon range from 2 to 10 mM; di-α-hydroxy bile acids are the only bile acids with detergent effects that include mucin depletion, mucosal damage, bacterial uptake, and microscopic inflammation that may be manifest in diseases associated with no overt inflammation of the mucosa, such as bile acid diarrhea, ileal diseases such as neuroendocrine tumors, ileal resection, and nonalcoholic steatohepatitis. Sulfation inactivates colonic secretion due to primary bile acids, but it may render secondary bile acids proinflammatory in the colon. Other evidence in preclinical models of inflammatory bowel disease (IBD) suggests reduced sulfation causes barrier dysfunction, inflammation, or carcinogenesis. These advances emphasize relevance and opportunities afforded by greater understanding of the chemistry and metabolism of bile acids, which stands to be further enhanced by research into the metabolic interactions of microbiota with bile acids.
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Affiliation(s)
- Michael Camilleri
- Clinical Enteric Neuroscience Translational and Epidemiological Research (CENTER), Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
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66
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Joyce SA, O'Malley D. Bile acids, bioactive signalling molecules in interoceptive gut-to-brain communication. J Physiol 2022; 600:2565-2578. [PMID: 35413130 PMCID: PMC9325455 DOI: 10.1113/jp281727] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 04/07/2022] [Indexed: 11/08/2022] Open
Abstract
Aside from facilitating solubilisation and absorption of dietary lipids and lipid-soluble vitamins, amphipathic bile acids (BAs) also act as bioactive signalling molecules. A plethora of conjugated or un-conjugated primary and bacterially-modified secondary BA moieties have been identified, with significant divergence between species. These molecules are excreted into the external environment of the intestinal lumen, yet nuclear and membrane receptors that are sensitive to BAs are expressed internally in the liver, intestinal and neural tissues, amongst others. The diversity of BAs and receptors underpins the multitude of distinct bioactive functions attributed to BAs, but also hampers elucidation of the physiological mechanisms underpinning these actions. In this topical review, we have considered the potential of BAs as cross-barrier signalling molecules that contribute to interoceptive pathways informing the central nervous system of environmental changes in the gut lumen. Activation of BAs on FGF19 -secreting enterocytes, enteroendocrine cells coupled to sensory nerves or intestinal immune cells would facilitate indirect signalling, whereas direct activation of BA receptors in the brain are likely to occur primarily under pathophysiological conditions when concentrations of BAs are elevated. Abstract figure legend The figure illustrates the microbial modification of hepatic primary bile acids into secondary bile acids. In addition to facilitating lipid digestion and absorption, bile acids act as bioactive signalling molecules by binding to bile acid receptors expressed on enterocytes, neural afferent-coupled enteroendocrine cells and immune cells. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Susan A Joyce
- School of Biochemistry and Cell Biology, University College Cork, Cork, Ireland.,APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Dervla O'Malley
- APC Microbiome Ireland, University College Cork, Cork, Ireland.,Department of Physiology, College of Medicine and Health, University College Cork, Cork, Ireland
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67
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Li M, Zhao X, Xie J, Tong X, Shan J, Shi M, Wang G, Ye W, Liu Y, Unger BH, Cheng Y, Zhang W, Wu N, Xia XQ. Dietary Inclusion of Seabuckthorn (Hippophae rhamnoides) Mitigates Foodborne Enteritis in Zebrafish Through the Gut-Liver Immune Axis. Front Physiol 2022; 13:831226. [PMID: 35464096 PMCID: PMC9019508 DOI: 10.3389/fphys.2022.831226] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 03/21/2022] [Indexed: 12/12/2022] Open
Abstract
To help prevent foodborne enteritis in aquaculture, several feed additives, such as herbal medicine, have been added to fish diets. Predictions of effective herb medicines for treating fish foodborne enteritis from key regulated DEGs (differentially expressed genes) in transcriptomic data can aid in the development of feed additives using the Traditional Chinese Medicine Integrated Database. Seabuckthorn has been assessed as a promising candidate for treating grass carp soybean-induced enteritis (SBMIE). In the present study, the SBMIE zebrafish model was used to assess seabuckthorn’s therapeutic or preventative effects. The results showed that intestinal and hepatic inflammation was reduced when seabuckthorn was added, either pathologically (improved intestinal villi morphology, less oil-drops) or growth-related (body fat deposition). Moreover, seabuckthorn may block the intestinal p53 signaling pathway, while activating the PPAR signaling pathway and fatty acid metabolism in the liver. 16S rRNA gene sequencing results also indicated a significant increase in OTU numbers and skewed overlapping with the fish meal group following the addition of seabuckthorn. Additionally, there were signs of altered gut microbiota taxa composition, particularly for reduced TM7, Sphingomonas, and Shigella, following the addition of seabuckthorn. Hindgut imaging of fluorescent immune cells in SBMIE larvae revealed the immune regulatory mechanisms at the cellular level. Seabuckthorn may significantly inhibit the inflammatory gathering of neutrophils, macrophages, and mature T cells, as well as cellular protrusions’ formation. On the other hand, in larvae, seabuckthorn inhibited the inflammatory aggregation of lck+ T cells but not immature lymphocytes, indicating that it affected intestinal adaptive immunity. Although seabuckthorn did not affect the distribution of intestinal CD4+ cells, the number of hepatic CD4+ cells were reduced in fish from the seabuckthorn supplementation group. Thus, the current data indicate that seabuckthorn may alleviate foodborne gut-liver symptoms by enhancing intestinal mucosal immunity and microbiota while simultaneously inhibiting hepatic adipose disposition, making it a potential additive for preventing fish foodborne gut-liver symptoms.
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Affiliation(s)
- Ming Li
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- College of Fisheries and Life Science, Dalian Ocean University, Dalian, China
| | - Xuyang Zhao
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- College of Fisheries and Life Science, Dalian Ocean University, Dalian, China
| | - Jiayuan Xie
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Xinyu Tong
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan, China
| | - Junwei Shan
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- College of Fisheries and Life Science, Dalian Ocean University, Dalian, China
| | - Mijuan Shi
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Guangxin Wang
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Weidong Ye
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Yuhang Liu
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- College of Fisheries and Life Science, Dalian Ocean University, Dalian, China
| | | | - Yingyin Cheng
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Wanting Zhang
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Nan Wu
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, China
- *Correspondence: Nan Wu, ; Xiao-Qin Xia,
| | - Xiao-Qin Xia
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, China
- *Correspondence: Nan Wu, ; Xiao-Qin Xia,
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68
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Affiliation(s)
- Alessia Perino
- Institute of Bioengineering, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Kristina Schoonjans
- Institute of Bioengineering, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.
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69
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Shi HJ, Chen XY, Chen XR, Wu ZB, Li JY, Sun YQ, Shi DX, Li J. Chinese Medicine Formula Siwu-Yin Inhibits Esophageal Precancerous Lesions by Improving Intestinal Flora and Macrophage Polarization. Front Pharmacol 2022; 13:812386. [PMID: 35308250 PMCID: PMC8927885 DOI: 10.3389/fphar.2022.812386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 01/25/2022] [Indexed: 12/24/2022] Open
Abstract
Siwu-Yin (SWY), a traditional Chinese medicinal formula, can replenish blood and nourish Yin. It was recorded in ancient Chinese medicine books in treating esophageal dysphagia, which has similar symptoms and prognosis with esophageal precancerous lesions and esophageal cancer. However, its effect has not been established in vivo. This study explores the antiesophageal cancer effect of SWY on rats with esophageal precancerous lesions. By performing 16S rRNA gene sequencing and metabolomics, it was suggested that SWY may improve the composition of intestinal flora of rats by regulating the synthesis and secretion of bile acids. In addition, flow cytometry results showed that SWY treatment modified tumor microenvironment by improving macrophage polarization and therefore inhibiting the occurrence of esophageal precancerous lesions.
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Affiliation(s)
- Hui-Juan Shi
- Department of Traditional Chinese Medicine, The Fourth Hospital of Hebei Medical University, Hebei Cancer Hospital, Shijiazhuang, China
| | - Xuan-Yu Chen
- Institute for Biotechnology, St. John’s University, Queens, NY, United States
| | - Xin-Ran Chen
- Pharmacy Department, The Fourth Hospital of Hebei Medical University, Hebei Cancer Hospital, Shijiazhuang, China
| | - Zhong-Bing Wu
- College of Integrated Traditional Chinese and Western Medicine, Hebei Medical University, Shijiazhuang, China
| | - Jian-Yong Li
- Hebei Ping An Health Group Pharmaceutical Research Institute, Shijiazhuang, China
| | - Ya-Qin Sun
- Health Food Research Office, Shijiazhuang Yiling Pharmaceutical Co., Ltd., Shijiazhuang, China
| | - Dong-Xuan Shi
- Department of Traditional Chinese Medicine, The Fourth Hospital of Hebei Medical University, Hebei Cancer Hospital, Shijiazhuang, China
| | - Jing Li
- Department of Traditional Chinese Medicine, The Fourth Hospital of Hebei Medical University, Hebei Cancer Hospital, Shijiazhuang, China
- College of Integrated Traditional Chinese and Western Medicine, Hebei Medical University, Shijiazhuang, China
- *Correspondence: Jing Li,
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70
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Farnesoid X Receptor Deficiency Induces Hepatic Lipid and Glucose Metabolism Disorder via Regulation of Pyruvate Dehydrogenase Kinase 4. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:3589525. [PMID: 35251469 PMCID: PMC8896157 DOI: 10.1155/2022/3589525] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 01/18/2022] [Accepted: 02/01/2022] [Indexed: 12/19/2022]
Abstract
Farnesoid X receptors (FXR) are bile acid receptors that play roles in lipid, glucose, and energy homeostasis. Synthetic FXR-specific agonists have been developed for treating nonalcoholic fatty liver disease (NAFLD) patients. However, the detailed mechanism remains unclear. To investigate the effects of FXR on NAFLD and the possible mechanism, FXR-null mice were fed either a normal or a high-fat diet. The FXR-null mice developed hepatomegaly, steatosis, accumulation of lipid droplets in liver cells, glucose metabolism disorder, and elevated serum lipid levels. Transcriptomic results showed increased expression of key lipid synthesis and glucose metabolism-related proteins. We focused on pyruvate dehydrogenase kinase 4 (PDK4), a key enzyme involved in the regulation of glucose and fatty acid (FA) metabolism and homeostasis. Subsequently, we confirmed an increase in PDK4 expression in FXR knockout cells. Moreover, inhibition of PDK4 expression alleviated lipid accumulation in hepatocytes caused by FXR deficiency in vivo and in vitro. Our results identify FXR as a nuclear transcription factor that regulates glucose and lipid metabolism balance through PDK4, providing further insights into the mechanism of FXR agonists in the treatment of metabolic diseases.
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71
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How Gut Microbes Nurture Intestinal Stem Cells: A Drosophila Perspective. Metabolites 2022; 12:metabo12020169. [PMID: 35208243 PMCID: PMC8878600 DOI: 10.3390/metabo12020169] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 02/07/2022] [Accepted: 02/08/2022] [Indexed: 11/16/2022] Open
Abstract
Host-microbiota interactions are key modulators of host physiology and behavior. Accumulating evidence suggests that the complex interplay between microbiota, diet and the intestine controls host health. Great emphasis has been given on how gut microbes have evolved to harvest energy from the diet to control energy balance, host metabolism and fitness. In addition, many metabolites essential for intestinal homeostasis are mainly derived from gut microbiota and can alleviate nutritional imbalances. However, due to the high complexity of the system, the molecular mechanisms that control host-microbiota mutualism, as well as whether and how microbiota affects host intestinal stem cells (ISCs) remain elusive. Drosophila encompasses a low complexity intestinal microbiome and has recently emerged as a system that might uncover evolutionarily conserved mechanisms of microbiota-derived nutrient ISC regulation. Here, we review recent studies using the Drosophila model that directly link microbiota-derived metabolites and ISC function. This research field provides exciting perspectives for putative future treatments of ISC-related diseases based on monitoring and manipulating intestinal microbiota.
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72
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Mohammed AD, Mohammed Z, Roland MM, Chatzistamou I, Jolly A, Schoettmer LM, Arroyo M, Kakar K, Tian Y, Patterson A, Nagarkatti M, Nagarkatti P, Kubinak JL. Defective humoral immunity disrupts bile acid homeostasis which promotes inflammatory disease of the small bowel. Nat Commun 2022; 13:525. [PMID: 35082296 PMCID: PMC8792037 DOI: 10.1038/s41467-022-28126-w] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 01/04/2022] [Indexed: 12/13/2022] Open
Abstract
Mucosal antibodies maintain gut homeostasis by promoting spatial segregation between host tissues and luminal microbes. Whether and how mucosal antibody responses influence gut health through modulation of microbiota composition is unclear. Here, we use a CD19-/- mouse model of antibody-deficiency to demonstrate that a relationship exists between dysbiosis, defects in bile acid homeostasis, and gluten-sensitive enteropathy of the small intestine. The gluten-sensitive small intestine enteropathy that develops in CD19-/- mice is associated with alterations to luminal bile acid composition in the SI, marked by significant reductions in the abundance of conjugated bile acids. Manipulation of bile acid availability, adoptive transfer of functional B cells, and ablation of bacterial bile salt hydrolase activity all influence the severity of small intestine enteropathy in CD19-/- mice. Collectively, results from our experiments support a model whereby mucosal humoral immune responses limit inflammatory disease of the small bowel by regulating bacterial BA metabolism.
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Affiliation(s)
- Ahmed Dawood Mohammed
- University of South Carolina School of Medicine Department of Pathology, Microbiology, Immunology 6439 Garners Ferry Rd., Columbia, SC, 29209, USA.,University of Baghdad School of Veterinary Medicine, Baghdad, Iraq
| | - Zahraa Mohammed
- University of South Carolina School of Medicine Department of Pathology, Microbiology, Immunology 6439 Garners Ferry Rd., Columbia, SC, 29209, USA.,Al-Mustansiriyah University School of Medicine Department of Microbiology, Baghdad, Iraq
| | - Mary M Roland
- University of South Carolina School of Medicine Department of Pathology, Microbiology, Immunology 6439 Garners Ferry Rd., Columbia, SC, 29209, USA
| | - Ioulia Chatzistamou
- University of South Carolina School of Medicine Department of Pathology, Microbiology, Immunology 6439 Garners Ferry Rd., Columbia, SC, 29209, USA
| | - Amy Jolly
- University of South Carolina School of Medicine Department of Pathology, Microbiology, Immunology 6439 Garners Ferry Rd., Columbia, SC, 29209, USA
| | - Lillian M Schoettmer
- University of South Carolina School of Medicine Department of Pathology, Microbiology, Immunology 6439 Garners Ferry Rd., Columbia, SC, 29209, USA
| | - Mireya Arroyo
- University of South Carolina School of Medicine Department of Pathology, Microbiology, Immunology 6439 Garners Ferry Rd., Columbia, SC, 29209, USA
| | - Khadija Kakar
- University of South Carolina School of Medicine Department of Pathology, Microbiology, Immunology 6439 Garners Ferry Rd., Columbia, SC, 29209, USA
| | - Yuan Tian
- Pennsylvania State University Department of Veterinary and Biomedical Sciences, State College, PA, USA
| | - Andrew Patterson
- Pennsylvania State University Department of Veterinary and Biomedical Sciences, State College, PA, USA
| | - Mitzi Nagarkatti
- University of South Carolina School of Medicine Department of Pathology, Microbiology, Immunology 6439 Garners Ferry Rd., Columbia, SC, 29209, USA
| | - Prakash Nagarkatti
- University of South Carolina School of Medicine Department of Pathology, Microbiology, Immunology 6439 Garners Ferry Rd., Columbia, SC, 29209, USA
| | - Jason L Kubinak
- University of South Carolina School of Medicine Department of Pathology, Microbiology, Immunology 6439 Garners Ferry Rd., Columbia, SC, 29209, USA.
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73
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Peng SS, Li Y, Chen Q, Hu Q, He Y, Che L, Jiang PP. Intestinal and Mucosal Microbiome Response to Oral Challenge of Enterotoxigenic Escherichia coli in Weaned Pigs. Pathogens 2022; 11:pathogens11020160. [PMID: 35215105 PMCID: PMC8879466 DOI: 10.3390/pathogens11020160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/20/2022] [Accepted: 01/21/2022] [Indexed: 12/10/2022] Open
Abstract
Enterotoxigenic Escherichia coli (ETEC) is closely associated with diarrhoea in children in resource-limited countries. This study aims to investigate the change of the mucosal microbiome and protein expression in the ileum induced by E. coli K88 (ETEC) using pigs as a model. Seven weaned male pigs were orally given ETEC (1 × 109 CFU, n = 7), and the other seven received saline (CON, n = 7). Ileal tissues were obtained 48 hours after the ETEC challenge for both proteomic and mucosal microbiome analyses. Nine proteins were found with altered abundance between the two groups, including a decrease in FABP1 and FABP6, involved in bile acid circulation. The TLR-9 mediated pathway was also affected showing increased transcription of genes SIGIRR and MyD88. Correlations between the ileal proteins and mucosal bacterial taxa found included a positive correlation between Lactobacilllus and PPP3CA (r = 0.9, p < 0.001) and a negative correlation between Prevotella with CTNND1 (r = −0.7, p < 0.01). In conclusion, ETEC infection caused inflammation and impaired the circulation of bile acids and the mucosal microbiome may affect the expression of intestinal proteins. Further studies are needed to explain the exact roles of these affected processes in the pathogenesis of ETEC-triggered diarrhoea.
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Affiliation(s)
- Shan-Shan Peng
- School of Public Health, Sun Yat-sen University, Guangzhou 510080, China;
| | - Yingjie Li
- Key Laboratory for Animal Disease Resistance and Nutrition of the Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Y.L.); (Q.C.); (Y.H.)
| | - Qiuhong Chen
- Key Laboratory for Animal Disease Resistance and Nutrition of the Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Y.L.); (Q.C.); (Y.H.)
| | - Qi Hu
- The Neomics Institute, Shenzhen 518122, China;
| | - Ying He
- Key Laboratory for Animal Disease Resistance and Nutrition of the Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Y.L.); (Q.C.); (Y.H.)
| | - Lianqiang Che
- Key Laboratory for Animal Disease Resistance and Nutrition of the Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Y.L.); (Q.C.); (Y.H.)
- Correspondence: (L.C.); (P.-P.J.)
| | - Ping-Ping Jiang
- School of Public Health, Sun Yat-sen University, Guangzhou 510080, China;
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Sun Yat-sen University, Guangzhou 510080, China
- Correspondence: (L.C.); (P.-P.J.)
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74
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Prochazkova M, Budinska E, Kuzma M, Pelantova H, Hradecky J, Heczkova M, Daskova N, Bratova M, Modos I, Videnska P, Splichalova P, Sowah SA, Kralova M, Henikova M, Selinger E, Klima K, Chalupsky K, Sedlacek R, Landberg R, Kühn T, Gojda J, Cahova M. Vegan Diet Is Associated With Favorable Effects on the Metabolic Performance of Intestinal Microbiota: A Cross-Sectional Multi-Omics Study. Front Nutr 2022; 8:783302. [PMID: 35071294 PMCID: PMC8777108 DOI: 10.3389/fnut.2021.783302] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Accepted: 11/25/2021] [Indexed: 12/14/2022] Open
Abstract
Background and Aim: Plant-based diets are associated with potential health benefits, but the contribution of gut microbiota remains to be clarified. We aimed to identify differences in key features of microbiome composition and function with relevance to metabolic health in individuals adhering to a vegan vs. omnivore diet. Methods: This cross-sectional study involved lean, healthy vegans (n = 62) and omnivore (n = 33) subjects. We assessed their glucose and lipid metabolism and employed an integrated multi-omics approach (16S rRNA sequencing, metabolomics profiling) to compare dietary intake, metabolic health, gut microbiome, and fecal, serum, and urine metabolomes. Results: The vegans had more favorable glucose and lipid homeostasis profiles than the omnivores. Long-term reported adherence to a vegan diet affected only 14.8% of all detected bacterial genera in fecal microbiome. However, significant differences in vegan and omnivore metabolomes were observed. In feces, 43.3% of all identified metabolites were significantly different between the vegans and omnivores, such as amino acid fermentation products p-cresol, scatole, indole, methional (lower in the vegans), and polysaccharide fermentation product short- and medium-chain fatty acids (SCFAs, MCFAs), and their derivatives (higher in the vegans). Vegan serum metabolome differed markedly from the omnivores (55.8% of all metabolites), especially in amino acid composition, such as low BCAAs, high SCFAs (formic-, acetic-, propionic-, butyric acids), and dimethylsulfone, the latter two being potential host microbiome co-metabolites. Using a machine-learning approach, we tested the discriminative power of each dataset. Best results were obtained for serum metabolome (accuracy rate 91.6%). Conclusion: While only small differences in the gut microbiota were found between the groups, their metabolic activity differed substantially. In particular, we observed a significantly different abundance of fermentation products associated with protein and carbohydrate intakes in the vegans. Vegans had significantly lower abundances of potentially harmful (such as p-cresol, lithocholic acid, BCAAs, aromatic compounds, etc.) and higher occurrence of potentially beneficial metabolites (SCFAs and their derivatives).
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Affiliation(s)
- Magdalena Prochazkova
- Department of Internal Medicine, Kralovske Vinohrady University Hospital and Third Faculty of Medicine, Charles University, Prague, Czechia
| | - Eva Budinska
- Research Centre for Toxic Compounds in the Environment, Faculty of Science, Masaryk University, Brno, Czechia
| | - Marek Kuzma
- Laboratory of Molecular Structure Characterization, Institute of Microbiology, Czech Academy of Sciences, Prague, Czechia
| | - Helena Pelantova
- Laboratory of Molecular Structure Characterization, Institute of Microbiology, Czech Academy of Sciences, Prague, Czechia
| | - Jaromir Hradecky
- Faculty of Forestry and Wood Sciences, Czech University of Life Sciences, Prague, Czechia
| | - Marie Heczkova
- Center of Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Nikola Daskova
- Center of Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia.,First Faculty of Medicine, Charles University, Prague, Czechia
| | - Miriam Bratova
- Center of Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Istvan Modos
- Center of Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Petra Videnska
- Research Centre for Toxic Compounds in the Environment, Faculty of Science, Masaryk University, Brno, Czechia
| | - Petra Splichalova
- Research Centre for Toxic Compounds in the Environment, Faculty of Science, Masaryk University, Brno, Czechia
| | - Solomon A Sowah
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Medical Faculty and University Hospital, Heidelberg University, Heidelberg, Germany
| | - Maria Kralova
- Department of Applied Mathematics and Computer Science, Masaryk University, Brno, Czechia
| | - Marina Henikova
- Department of Internal Medicine, Kralovske Vinohrady University Hospital and Third Faculty of Medicine, Charles University, Prague, Czechia
| | - Eliska Selinger
- Department of Internal Medicine, Kralovske Vinohrady University Hospital and Third Faculty of Medicine, Charles University, Prague, Czechia
| | - Krystof Klima
- Czech Centre for Phenogenomics, Institute of Molecular Genetics, Czech Academy of Sciences, Prague, Czechia
| | - Karel Chalupsky
- Czech Centre for Phenogenomics, Institute of Molecular Genetics, Czech Academy of Sciences, Prague, Czechia
| | - Radislav Sedlacek
- Czech Centre for Phenogenomics, Institute of Molecular Genetics, Czech Academy of Sciences, Prague, Czechia
| | - Rikard Landberg
- Division of Food and Nutrition Science, Department of Biology and Biological Engineering, Chalmers University of Technology, Goteborg, Sweden
| | - Tilman Kühn
- Institute of Global Food Security, Queen's University Belfast, Belfast, United Kingdom.,Heidelberg Institute of Global Health (HIGH), Medical Faculty and University Hospital, Heidelberg University, Heidelberg, Germany
| | - Jan Gojda
- Department of Internal Medicine, Kralovske Vinohrady University Hospital and Third Faculty of Medicine, Charles University, Prague, Czechia
| | - Monika Cahova
- Center of Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
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75
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Azuma Y, Uchiyama K, Sugaya T, Yasuda T, Hashimoto H, Kajiwara-Kubota M, Sugino S, Kitae H, Torii T, Mizushima K, Doi T, Inoue K, Dohi O, Yoshida N, Kamada K, Ishikawa T, Takagi T, Konishi H, Naito Y, Itoh Y. Deoxycholic acid delays the wound healing of colonic epithelial cells via transmembrane G-protein-coupled receptor 5. J Gastroenterol Hepatol 2022; 37:134-143. [PMID: 34477242 DOI: 10.1111/jgh.15676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 08/24/2021] [Accepted: 08/30/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND AIM Efficient intestinal wound healing is essential for good prognoses of ulcerative colitis (UC). Although bile acids and the transmembrane G-protein-coupled receptor (TGR) 5 have been reported to affect wound healing in intestinal epithelial cells, the detailed underlying mechanisms are unclear. Here, we investigated the role of TGR5 in wound healing in the context of colonic epithelial cells in the presence of bile acids. METHODS The expression of TGR5 in the colonic epithelium of both a dextran sulfate sodium (DSS)-induced colitis mouse model (recovery phase), and UC patients in clinical remission, was evaluated. Young adult mouse colonic epithelial (YAMC) cells were then used to evaluate wound healing after treatment with deoxycholic acid (DCA); TGR5 was silenced in YAMC cells via shRNA-transfection, and a wound-healing assay in the presence of DCA was performed. Furthermore, we investigated the role of the activation of AKT in the context of wound healing. RESULTS The expression of TGR5 was decreased in the colonic epithelium of both mice with DSS-induced colitis and UC patients. Additionally, DCA significantly delayed wound healing in YAMC cells but not in TGR5 silenced ones. Of note, the DCA-induced activation of AKT signaling in YAMC cells was inhibited by TGR5 silencing, and AKT inhibitors prevented the wound healing delay induced by DCA. CONCLUSIONS Overall, we show that DCA delays wound healing in the context of colonic epithelial cells through AKT activation. These results may support the development of new therapeutic approaches for epithelial regeneration in UC.
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Affiliation(s)
- Yuka Azuma
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Kazuhiko Uchiyama
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Takeshi Sugaya
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Takeshi Yasuda
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Hikaru Hashimoto
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Mariko Kajiwara-Kubota
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Satoshi Sugino
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Hiroaki Kitae
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Takashi Torii
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Katsura Mizushima
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Toshifumi Doi
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Ken Inoue
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Osamu Dohi
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Naohisa Yoshida
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Kazuhiro Kamada
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Takeshi Ishikawa
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Tomohisa Takagi
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Hideyuki Konishi
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Yuji Naito
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Yoshito Itoh
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
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76
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Boutte HJ, Chen J, Wylie TN, Wylie KM, Xie Y, Geisman M, Prabu A, Gazit V, Tarr PI, Levin MS, Warner BW, Davidson NO, Rubin DC. Fecal microbiome and bile acid metabolome in adult short bowel syndrome. Am J Physiol Gastrointest Liver Physiol 2022; 322:G154-G168. [PMID: 34816756 PMCID: PMC8793869 DOI: 10.1152/ajpgi.00091.2021] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Loss of functional small bowel surface area causes short bowel syndrome (SBS), intestinal failure, and parenteral nutrition (PN) dependence. The gut adaptive response following resection may be difficult to predict, and it may take up to 2 yr to determine which patients will wean from PN. Here, we examined features of gut microbiota and bile acid (BA) metabolism in determining adaptation and ability to wean from PN. Stool and sera were collected from healthy controls and from patients with SBS (n = 52) with ileostomy, jejunostomy, ileocolonic, and jejunocolonic anastomoses fed with PN plus enteral nutrition or who were exclusively enterally fed. We undertook 16S rRNA gene sequencing, BA profiling, and 7α-hydroxy-4-cholesten-3-one (C4) quantitation with LC-MS/MS and serum amino acid analyses. Patients with SBS exhibited altered gut microbiota with reduced gut microbial diversity compared with healthy controls. We observed differences in the microbiomes of patients with SBS with ileostomy versus jejunostomy, jejunocolonic versus ileocolonic anastomoses, and PN dependence compared with those who weaned from PN. Stool and serum BA composition and C4 concentrations were also altered in patients with SBS, reflecting adaptive changes in enterohepatic BA cycling. Stools from patients who were weaned from PN were enriched in secondary BAs including deoxycholic acid and lithocholic aicd. Shifts in gut microbiota and BA metabolites may generate a favorable luminal environment in select patients with SBS, promoting the ability to wean from PN. Proadaptive microbial species and select BA may provide novel targets for patient-specific therapies for SBS.NEW & NOTEWORTHY Loss of intestinal surface area causes short bowel syndrome, intestinal failure, and parenteral nutrition dependence. We analyzed the gut microbiota and bile acid metabolome of a large cohort of short bowel syndrome adult patients with different postsurgical anatomies. We report a novel analysis of the microbiome of patients with ileostomy and jejunostomy. Enrichment of specific microbial and bile acid species may be associated with the ability to wean from parenteral nutrition.
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Affiliation(s)
- Harold J. Boutte
- 1Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Jacqueline Chen
- 1Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Todd N. Wylie
- 2Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri,3McDonnell Genome Institute, Washington University School of Medicine, St. Louis, Missouri
| | - Kristine M. Wylie
- 2Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri,3McDonnell Genome Institute, Washington University School of Medicine, St. Louis, Missouri
| | - Yan Xie
- 1Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Mackenzie Geisman
- 1Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Anirudh Prabu
- 1Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Vered Gazit
- 1Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Phillip I. Tarr
- 2Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri,4Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, Missouri
| | - Marc S. Levin
- 1Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri,7Veterans Administration Saint Louis Health Care System, St. Louis, Missouri
| | - Brad W. Warner
- 5Division of Pediatric Surgery, Department of Surgery, Washington University School of Medicine, St. Louis, Missouri
| | - Nicholas O. Davidson
- 1Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri,6Department of Developmental Biology, Washington University School of Medicine, St. Louis, Missouri
| | - Deborah C. Rubin
- 1Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri,6Department of Developmental Biology, Washington University School of Medicine, St. Louis, Missouri
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77
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Yde J, Wu Q, Borg JF, Fenton RA, Moeller HB. A systems-level analysis of bile acids effects on rat colon epithelial cells. Am J Physiol Gastrointest Liver Physiol 2022; 322:G34-G48. [PMID: 34643455 DOI: 10.1152/ajpgi.00178.2021] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 10/08/2021] [Indexed: 01/31/2023]
Abstract
Bile acid diarrhea is a chronic condition caused by increased delivery of bile acids to the colon. The underlying mechanisms remain to be elucidated. To investigate genes involved in bile acid diarrhea, systems-level analyses were used on a rat bile acid diarrhea model. Twelve male Wistar Munich rats, housed in metabolic cages, were fed either control or bile acid-mixed (1% wt/wt) diets for 10 days. Food intake, water intake, urine volume, body weight, and fecal output were monitored daily. After euthanasia, colonic epithelial cells were isolated using calcium chelation and processed for systems-level analyses, that is, RNA-sequencing transcriptomics and mass spectrometry proteomics. Bile acid-fed rats suffered diarrhea, indicated by increased drinking, feces weight, and fecal water content compared with control rats. Urine output was unchanged. With bile acid feeding, RNA-sequencing revealed 204 increased and 401 decreased mRNAs; mass spectrometry revealed 183 increased and 111 decreased proteins. Among the altered genes were genes associated with electrolyte and water transport (including Slc12a7, Clca4, and Aqp3) and genes associated with bile acid transport (Slc2b1, Abcg2, Slc51a, Slc51b, and Fabps). Correlation analysis showed a significant positive correlation (Pearson's r = 0.28) between changes in mRNA expression and changes in protein expression. However, caution must be exercised in making a direct correlation between experimentally determined transcriptomes and proteomes. Genes associated with bile acid transport responded to bile acid feeding, suggesting that colonic bile acid transport also occur by regulated protein facilitated mechanisms in addition to passive diffusion. In summary, the study provides annotated rat colonic epithelial cell transcriptome and proteome with response to bile acid feeding.NEW & NOTEWORTHY Feeding rats with a bile acid caused changes in fecal output, underlining this bile acid diarrhea model's usefulness. Colonic epithelial expression of genes associated with facilitated transport of bile acids was altered during bile acid feeding. The study raises the possibility of regulated colonic transepithelial transport of bile acids in response to luminal bile acids. In addition, this study provides annotated rat colonic epithelial cell transcriptome and proteome with response to bile acid feeding.
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Affiliation(s)
- Jonathan Yde
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Qi Wu
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Johan F Borg
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Robert A Fenton
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Hanne B Moeller
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
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Kim Y, Lee S, Kim S, Kim TY, Lee SH, Chang JH, Kweon MN. LKB1 in Intestinal Epithelial Cells Regulates Bile Acid Metabolism by Modulating FGF15/19 Production. Cell Mol Gastroenterol Hepatol 2021; 13:1121-1139. [PMID: 34973477 PMCID: PMC8873961 DOI: 10.1016/j.jcmgh.2021.12.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 12/22/2021] [Accepted: 12/27/2021] [Indexed: 12/17/2022]
Abstract
BACKGROUND & AIMS Liver kinase B1 (LKB1) is a master upstream protein kinase involved in nutrient sensing and glucose and lipid metabolism in many tissues; however, its metabolic role in intestinal epithelial cells (IEC) remains unclear. In this study, we investigated the regulatory role of LKB1 on bile acid (BA) homeostasis. METHODS We generated mice with IEC-specific deletion of LKB1 (LKB1ΔIEC) and analyzed the characteristics of IEC development and BA level. In vitro assays with small interfering RNA, liquid chromatography/mass spectrometry, metagenomics, and RNA-sequencing were used to elucidate the regulatory mechanisms underlying perturbed BA homeostasis. RESULTS LKB1 deletion resulted in abnormal differentiation of secretory cell lineages. Unexpectedly, BA pool size increased substantially in LKB1ΔIEC mice. A significant reduction of the farnesoid X receptor (FXR) target genes, including fibroblast growth factor 15/19 (FGF15/19), known to inhibit BA synthesis, was found in the small intestine (SI) ileum of LKB1ΔIEC mice. We observed that LKB1 depletion reduced FGF15/19 protein level in human IECs in vitro. Additionally, a lower abundance of bile salt hydrolase-producing bacteria and elevated levels of FXR antagonist (ie, T-βMCA) were observed in the SI of LKB1ΔIEC mice. Moreover, LKB1ΔIEC mice showed impaired conversion of retinol to retinoic acids in the SI ileum. Subsequently, vitamin A treatment failed to induce FGF15 production. Thus, LKB1ΔIEC mice fed with a high-fat diet showed improved glucose tolerance and increased energy expenditure. CONCLUSIONS LKB1 in IECs manages BA homeostasis by controlling FGF15/19 production.
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Affiliation(s)
- Yeji Kim
- Mucosal Immunology Laboratory, Department of Convergence Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sohyeon Lee
- Mucosal Immunology Laboratory, Department of Convergence Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Seungil Kim
- Mucosal Immunology Laboratory, Department of Convergence Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea,Digestive Diseases Research Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Tae-Young Kim
- Mucosal Immunology Laboratory, Department of Convergence Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Su-Hyun Lee
- Mucosal Immunology Laboratory, Department of Convergence Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jae-Hoon Chang
- College of Pharmacy, Yeungnam University, Gyeongsan, Republic of Korea
| | - Mi-Na Kweon
- Mucosal Immunology Laboratory, Department of Convergence Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea,Digestive Diseases Research Center, University of Ulsan College of Medicine, Seoul, Republic of Korea,Correspondence Address correspondence to: Dr Mi-Na Kweon, Asan Medical Center, Department of Convergence Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul 05505 Republic of Korea. tel: 82-2-3010-2096.
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79
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Yin C, Xia B, Tang S, Cao A, Liu L, Zhong R, Chen L, Zhang H. The Effect of Exogenous Bile Acids on Antioxidant Status and Gut Microbiota in Heat-Stressed Broiler Chickens. Front Nutr 2021; 8:747136. [PMID: 34901107 PMCID: PMC8652638 DOI: 10.3389/fnut.2021.747136] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Accepted: 10/15/2021] [Indexed: 12/12/2022] Open
Abstract
Bile acids are critical for lipid absorption, however, their new roles in maintaining or regulating systemic metabolism are irreplaceable. The negative impacts of heat stress (HS) on growth performance, lipid metabolism, and antioxidant status have been reported, but it remains unknown whether the bile acids (BA) composition of broiler chickens can be affected by HS. Therefore, this study aimed to investigate the modulating effects of the environment (HS) and whether dietary BA supplementation can benefit heat-stressed broiler chickens. A total of 216 Arbor Acres broilers were selected with a bodyweight approach average and treated with thermal neutral (TN), HS (32°C), or HS-BA (200 mg/kg BA supplementation) from 21 to 42 days. The results showed that an increase in average daily gain (P < 0.05) while GSH-Px activities (P < 0.05) in both serum and liver were restored to the normal range were observed in the HS-BA group. HS caused a drop in the primary BA (P = 0.084, 38.46%) and Tauro-conjugated BA (33.49%) in the ileum, meanwhile, the secondary BA in the liver and cecum were lower by 36.88 and 39.45% respectively. Notably, results were consistent that SBA levels were significantly increased in the serum (3-fold, P = 0.0003) and the ileum (24.89-fold, P < 0.0001). Among them, TUDCA levels (P < 0.01) were included. Besides, BA supplementation indeed increased significantly TUDCA (P = 0.0154) and THDCA (P = 0.0003) levels in the liver, while ileal TDCA (P = 0.0307), TLCA (P = 0.0453), HDCA (P = 0.0018), and THDCA (P = 0.0002) levels were also increased. Intestinal morphology of ileum was observed by hematoxylin and eosin (H&E) staining, birds fed with BA supplementation reduced (P = 0.0431) crypt depth, and the ratio of villous height to crypt depth trended higher (P = 0.0539) under the heat exposure. Quantitative RT-PCR showed that dietary supplementation with BA resulted in upregulation of FXR (P = 0.0369), ASBT (P = 0.0154), and Keap-1 (P = 0.0104) while downregulation of iNOS (P = 0.0399) expression in ileum. Moreover, 16S rRNA gene sequencing analysis and relevance networks revealed that HS-derived changes in gut microbiota and BA metabolites of broilers may affect their resistance to HS. Thus, BA supplementation can benefit broiler chickens during high ambient temperatures, serving as a new nutritional strategy against heat stress.
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Affiliation(s)
- Chang Yin
- The State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Bing Xia
- The State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China.,College of Animal Science and Technology, Northwest A&F University, Xianyang, China
| | - Shanlong Tang
- The State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Aizhi Cao
- The State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China.,Shandong Longchang Animal Health Care Co., Ltd., Jinan, China
| | - Lei Liu
- The State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Ruqing Zhong
- The State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Liang Chen
- The State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Hongfu Zhang
- The State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
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80
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Su J, He Z, Yu Y, Lu M, Wu Z, Zhang D. Gualou Xiebai Decoction ameliorates increased Caco-2 monolayer permeability induced by bile acids via tight junction regulation, oxidative stress suppression and apoptosis reduction. J Bioenerg Biomembr 2021; 54:45-57. [PMID: 34718922 DOI: 10.1007/s10863-021-09927-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 10/22/2021] [Indexed: 12/11/2022]
Abstract
Gualou Xiebai Decoction (GXD), a classic prescription, is widely used to dealing with inflammatory diseases in China for thousands of years. Abnormal metabolic state of bile acids (BAs) is confirmed to cause intestinal epithelial barrier dysfunction. In preliminary work, we observed that GXD could decrease intestinal permeability in hyperlipidemia mice. The present study aimed to explore the protective effect of GXD on intestinal mucosa in vitro. Caco-2 cell monolayer permeability among different groups was determined by measuring the concentrations of FITC-dextran in the lower compartments and transepithelial electrical resistance (TEER). Meanwhile, mRNA and protein expressions of tight junctions (TJs) were investigated. Generation of intracellular reactive oxygen species (ROS) and the ratio of cell apoptosis induced by BAs were assessed by fluorescence probe and flow cytometry. GXD was shown to keep the cell monolayer in low permeable status, increase TEER and mRNA and protein expressions of occludin (Ocln) and zonula occluden 2 (ZO2) remarkably in cells challenged with cholic acid (CA), deoxycholic acid (DCA) and glycocholic acid (GCA). However, no significant effects were uncovered against the pathological effects of taurocholic acid (TCA). Meanwhile, generation of ROS and increased levels of apoptotic cells caused by CA, DCA and GCA were dramatically decreased by GXD, which were not observed on TCA. GXD could significantly attenuate intestinal barrier dysfunction induced by BAs via TJs regulation, oxidative stress suppression and cell apoptosis decrease, but such effects and behind mechanisms differed among different kinds of BAs.
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Affiliation(s)
- Jiyuan Su
- The Department of Geriatrics, 900TH Hospital of Joint Logistics Support Force (Clinical College of Fujian Medical University), Fuzhou, 350001, China
| | - Zhiqing He
- Department of Cardiology, Changzheng Hospital, Naval Military Medical University, Shanghai, 200003, China
| | - Yunhua Yu
- The Department of Geriatrics, 900TH Hospital of Joint Logistics Support Force (Clinical College of Fujian Medical University), Fuzhou, 350001, China
| | - Mingfang Lu
- The Department of Geriatrics, 900TH Hospital of Joint Logistics Support Force (Clinical College of Fujian Medical University), Fuzhou, 350001, China
| | - Zonggui Wu
- Department of Cardiology, Changzheng Hospital, Naval Military Medical University, Shanghai, 200003, China.
| | - Dongmei Zhang
- The Department of Geriatrics, 900TH Hospital of Joint Logistics Support Force (Clinical College of Fujian Medical University), Fuzhou, 350001, China.
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81
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Burns GL, Hoedt EC, Walker MM, Talley NJ, Keely S. Physiological mechanisms of unexplained (functional) gastrointestinal disorders. J Physiol 2021; 599:5141-5161. [PMID: 34705270 DOI: 10.1113/jp281620] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 09/20/2021] [Indexed: 12/13/2022] Open
Abstract
Functional gastrointestinal disorders (FGIDs) encompass a range of complex conditions with similar clinical characteristics and no overt pathology. Recent recognition of sub-clinical pathologies in FGIDs, in conjunction with physiological and biochemical abnormalities including increased intestinal permeability, microbial profile alterations, differences in metabolites and extra-intestinal manifestations of disease, call into question the designation of these conditions as 'functional'. This is despite significant heterogeneity in both symptom profile and specifics of reported physiological abnormalities hampering efforts to determine defined mechanisms that drive onset and chronicity of symptoms. Instead, the literature demonstrates these conditions are disorders of homeostatic imbalance, with disruptions in both host and microbial function and metabolism. This imbalance is also associated with extraintestinal abnormalities including psychological comorbidities and fatigue that may be a consequence of gastrointestinal disruption. Given the exploitation of such abnormalities will be crucial for improved therapeutic selection, an enhanced understanding of the relationship between alterations in function of the gastrointestinal tract and the response of the immune system is of interest in identifying mechanisms that drive FGID onset and chronicity. Considerations for future research should include the role of sex hormones in regulating physiological functions and treatment responses in patients, as well as the importance of high-level phenotyping of clinical, immune, microbial and physiological parameters in study cohorts. There is opportunity to examine the functional contribution of the microbiota and associated metabolites as a source of mechanistic insight and targets for therapeutic modulation.
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Affiliation(s)
- Grace L Burns
- School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, University of Newcastle, Newcastle, NSW, Australia.,NHMRC Centre for Research Excellence in Digestive Health, University of Newcastle, Newcastle, NSW, Australia.,New Lambton Heights, Hunter Medical Research Institute, Newcastle, NSW, Australia
| | - Emily C Hoedt
- NHMRC Centre for Research Excellence in Digestive Health, University of Newcastle, Newcastle, NSW, Australia.,New Lambton Heights, Hunter Medical Research Institute, Newcastle, NSW, Australia.,School of Medicine and Public Health, College of Health, Medicine and Wellbeing, University of Newcastle, Newcastle, NSW, Australia
| | - Marjorie M Walker
- NHMRC Centre for Research Excellence in Digestive Health, University of Newcastle, Newcastle, NSW, Australia.,New Lambton Heights, Hunter Medical Research Institute, Newcastle, NSW, Australia.,School of Medicine and Public Health, College of Health, Medicine and Wellbeing, University of Newcastle, Newcastle, NSW, Australia
| | - Nicholas J Talley
- NHMRC Centre for Research Excellence in Digestive Health, University of Newcastle, Newcastle, NSW, Australia.,New Lambton Heights, Hunter Medical Research Institute, Newcastle, NSW, Australia.,School of Medicine and Public Health, College of Health, Medicine and Wellbeing, University of Newcastle, Newcastle, NSW, Australia
| | - Simon Keely
- School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, University of Newcastle, Newcastle, NSW, Australia.,NHMRC Centre for Research Excellence in Digestive Health, University of Newcastle, Newcastle, NSW, Australia.,New Lambton Heights, Hunter Medical Research Institute, Newcastle, NSW, Australia
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82
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Fecal Microbiota Transplantation Increases Colonic IL-25 and Dampens Tissue Inflammation in Patients with Recurrent Clostridioides difficile. mSphere 2021; 6:e0066921. [PMID: 34704776 PMCID: PMC8550158 DOI: 10.1128/msphere.00669-21] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Clostridioides difficile infection (CDI) is the most common hospital-acquired infection in the United States. Antibiotic-induced dysbiosis is the primary cause of susceptibility, and fecal microbiota transplantation (FMT) has emerged as an effective therapy for recurrence. We previously demonstrated in the mouse model of CDI that antibiotic-induced dysbiosis reduced colonic expression of interleukin 25 (IL-25) and that FMT protected in part by restoring IL-25 signaling. Here, we conducted a prospective study in humans to test if FMT induced IL-25 expression in the colons of patients with recurrent CDI (rCDI). Colonic biopsy specimens and blood were collected at the time of FMT and 60 days later. Colon biopsy specimens were analyzed for IL-25 protein levels, total tissue transcriptome, and epithelium-associated microbiota before and after FMT, and peripheral immune cells were immunophenotyped. FMT increased alpha diversity of the colonic microbiota and levels of IL-25 in colonic tissue. In addition, FMT increased expression of homeostatic genes and repressed inflammatory genes. Finally, circulating Th17 cells were decreased post-FMT. The increase in levels of the cytokine IL-25 accompanied by decreased inflammation is consistent with FMT acting in part to protect from recurrent CDI via restoration of commensal activation of type 2 immunity. IMPORTANCE Fecal microbiota transplantation (FMT) is an effective treatment for C. difficile infection for most patients; however, introducing a complex mixture of microbes also has had unintended consequences for some patients. Attempts to create a standardized probiotic therapeutic that recapitulates the efficacy of FMT have been unsuccessful to date. We sought to understand what immune markers are changed in patients undergoing FMT to treat recurrent C. difficile infection and identified an immune signaling molecule, IL-25, that was restored by FMT. This finding indicates that adjunctive therapy with IL-25 could be useful in treating C. difficile infection.
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83
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Ijssennagger N, van Rooijen KS, Magnúsdóttir S, Ramos Pittol JM, Willemsen ECL, de Zoete MR, Baars MJD, Stege PB, Colliva C, Pellicciari R, Youssef SA, de Bruin A, Vercoulen Y, Kuipers F, van Mil SWC. Ablation of liver Fxr results in an increased colonic mucus barrier in mice. JHEP Rep 2021; 3:100344. [PMID: 34604725 PMCID: PMC8463863 DOI: 10.1016/j.jhepr.2021.100344] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/16/2021] [Accepted: 07/22/2021] [Indexed: 12/12/2022] Open
Abstract
Background & Aims The interorgan crosstalk between the liver and the intestine has been the focus of intense research. Key in this crosstalk are bile acids, which are secreted from the liver into the intestine, interact with the microbiome, and upon absorption reach back to the liver. The bile acid-activated farnesoid X receptor (Fxr) is involved in the gut-to-liver axis. However, liver-to-gut communication and the roles of bile acids and Fxr remain elusive. Herein, we aim to get a better understanding of Fxr-mediated liver-to-gut communication, particularly in colon functioning. Methods Fxr floxed/floxed mice were crossed with cre-expressing mice to yield Fxr ablation in the intestine (Fxr-intKO), liver (Fxr-livKO), or total body (Fxr-totKO). The effects on colonic gene expression (RNA sequencing), the microbiome (16S sequencing), and mucus barrier function by ex vivo imaging were analysed. Results Despite relatively small changes in biliary bile acid concentration and composition, more genes were differentially expressed in the colons of Fxr-livKO mice than in those of Fxr-intKO and Fxr-totKO mice (3272, 731, and 1824, respectively). The colons of Fxr-livKO showed increased expression of antimicrobial genes, Toll-like receptors, inflammasome-related genes and genes belonging to the ‘Mucin-type O-glycan biosynthesis’ pathway. Fxr-livKO mice have a microbiome profile favourable for the protective capacity of the mucus barrier. The thickness of the inner sterile mucus layer was increased and colitis symptoms reduced in Fxr-livKO mice. Conclusions Targeting of FXR is at the forefront in the battle against metabolic diseases. We show that ablation of Fxr in the liver greatly impacts colonic gene expression and increased the colonic mucus barrier. Increasing the mucus barrier is of utmost importance to battle intestinal diseases such as inflammatory bowel disease, and we show that this might be done by antagonising FXR in the liver. Lay summary This study shows that the communication of the liver to the intestine is crucial for intestinal health. Bile acids are key players in this liver-to-gut communication, and when Fxr, the master regulator of bile acid homoeostasis, is ablated in the liver, colonic gene expression is largely affected, and the protective capacity of the mucus barrier is increased. Fxr ablation in the mouse liver has a major impact on colonic gene expression. Fxr signalling is induced in the colons of liver Fxr knockout (Fxr-livKO) mice. In Fxr-livKO colons, expression of antimicrobial and mucus genes is increased. Microbiome of Fxr-livKO mice is indicative of enhanced mucus barrier function. Fxr-livKO mice have an increased mucus barrier.
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Key Words
- BAs, bile acids
- Colon
- DSS, dextran sodium sulfate
- FITC, fluorescein isothiocyanate
- Farnesoid X receptor
- Fgfr4, fibroblast growth factor receptor 4
- Fxr, farnesoid X receptor
- Fxr-intKO, intestine-specific Fxr knockout
- Fxr-livKO, liver-specific Fxr knockout
- Fxr-totKO, whole body Fxr knockout
- GO, Gene Ontology
- Gut microbiome
- HID, high-iron diamine
- IBD, inflammatory bowel disease
- Intestine-specific Fxr-KO mouse
- KEGG, Kyoto Encyclopedia of Genes and Genomes
- Liver-specific Fxr-KO mouse
- Liver–gut axis
- Mucus layer
- RT qPCR, real-time quantitative PCR
- fpkm, fragments per kilobase of transcript per million mapped reads
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Affiliation(s)
- Noortje Ijssennagger
- Department of Molecular Cancer Research, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Kristel S van Rooijen
- Department of Molecular Cancer Research, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Stefanía Magnúsdóttir
- Department of Molecular Cancer Research, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, The Netherlands
| | - José M Ramos Pittol
- Department of Molecular Cancer Research, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, The Netherlands.,Institute of Biochemistry, University of Innsbruck, Innsbruck, Austria
| | - Ellen C L Willemsen
- Department of Molecular Cancer Research, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Marcel R de Zoete
- Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Matthijs J D Baars
- Department of Molecular Cancer Research, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Paul B Stege
- Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, The Netherlands
| | | | | | - Sameh A Youssef
- Non-Clinical Safety, Department of Pathology, Janssen Pharmaceutica Research and Development, Beerse, Belgium
| | - Alain de Bruin
- Departments of Pediatrics and Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.,Department of Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
| | - Yvonne Vercoulen
- Department of Molecular Cancer Research, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Folkert Kuipers
- Departments of Pediatrics and Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Saskia W C van Mil
- Department of Molecular Cancer Research, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, The Netherlands
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84
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Greimel T, Jahnel J, Pohl S, Strini T, Tischitz M, Meier-Allard N, Holasek S, Meinel K, Aguiriano-Moser V, Zobel J, Haidl H, Gallistl S, Panzitt K, Wagner M, Schlagenhauf A. Bile acid-induced tissue factor activity in hepatocytes correlates with activation of farnesoid X receptor. J Transl Med 2021; 101:1394-1402. [PMID: 34145381 PMCID: PMC8440176 DOI: 10.1038/s41374-021-00628-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 05/20/2021] [Accepted: 06/04/2021] [Indexed: 12/13/2022] Open
Abstract
Bile acids (BA) have been found to promote coagulation by increasing tissue factor (TF) activity. The contribution of elevated BA levels and cholestasis to TF decryption within the liver parenchyma and the role of farnesoid X receptor (FXR) in this process remain unclear. We investigated the effects of BA on TF activity and thrombin generation in hepatocytes and correlated these effects with activation of FXR-dependent signaling and apoptosis. HepG2 cells and primary hepatocytes were incubated with chenodeoxycholic acid (CDCA), glycochenodeoxycholic acid (GCDCA), ursodeoxycholic acid (UCDA), or the synthetic FXR agonist GW4064 for 24 h. MTT tests demonstrated cell viability throughout experiments. TF activity was tested via factor Xa generation and thrombin generation was measured by calibrated automated thrombography. Increased TF activity alongside enhanced thrombin generation was observed with CDCA and GW4064 but not with GCDCA and UDCA. TF activity was substantially reduced when FXR activation was blocked with the antagonist DY 268. Quantitative polymerase chain reaction revealed upregulation of FXR target genes only by CDCA and GW4064. Western blot analysis and fluorescence microscopy showed no TF overexpression arguing for TF decryption. Caspase 3 activity measurements and flow cytometric analysis of Annexin V binding showed no signs of apoptosis. Long-term exposure of hepatocytes to nontoxic BA may cause intracellular FXR overstimulation, triggering TF decryption irrespective of the amphiphilic properties of BA. The effect of BA on TF activation correlates with the molecule's ability to enter the cells and activate FXR. TF decryption occurs independently of apoptotic mechanisms.
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Affiliation(s)
- Theresa Greimel
- Division of General Paediatrics, Department of Paediatrics and Adolescent Medicine, Medical University Graz, Graz, Austria
| | - Jörg Jahnel
- Division of General Paediatrics, Department of Paediatrics and Adolescent Medicine, Medical University Graz, Graz, Austria
| | - Sina Pohl
- Division of General Paediatrics, Department of Paediatrics and Adolescent Medicine, Medical University Graz, Graz, Austria
| | - Tanja Strini
- Division of General Paediatrics, Department of Paediatrics and Adolescent Medicine, Medical University Graz, Graz, Austria
| | - Martin Tischitz
- Division of General Paediatrics, Department of Paediatrics and Adolescent Medicine, Medical University Graz, Graz, Austria
| | - Nathalie Meier-Allard
- Division of Immunology and Pathophysiology, Otto Loewi Research Center, Medical University Graz, Graz, Austria
| | - Sandra Holasek
- Division of Immunology and Pathophysiology, Otto Loewi Research Center, Medical University Graz, Graz, Austria
| | - Katharina Meinel
- Division of General Paediatrics, Department of Paediatrics and Adolescent Medicine, Medical University Graz, Graz, Austria
| | - Victor Aguiriano-Moser
- Division of General Paediatrics, Department of Paediatrics and Adolescent Medicine, Medical University Graz, Graz, Austria
| | - Joachim Zobel
- Division of General Paediatrics, Department of Paediatrics and Adolescent Medicine, Medical University Graz, Graz, Austria
| | - Harald Haidl
- Division of General Paediatrics, Department of Paediatrics and Adolescent Medicine, Medical University Graz, Graz, Austria
| | - Siegfried Gallistl
- Division of General Paediatrics, Department of Paediatrics and Adolescent Medicine, Medical University Graz, Graz, Austria
| | - Katrin Panzitt
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Medical University Graz, Graz, Austria
| | - Martin Wagner
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Medical University Graz, Graz, Austria
| | - Axel Schlagenhauf
- Division of General Paediatrics, Department of Paediatrics and Adolescent Medicine, Medical University Graz, Graz, Austria.
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85
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Baumgartner M, Lang M, Holley H, Crepaz D, Hausmann B, Pjevac P, Moser D, Haller F, Hof F, Beer A, Orgler E, Frick A, Khare V, Evstatiev R, Strohmaier S, Primas C, Dolak W, Köcher T, Klavins K, Rath T, Neurath MF, Berry D, Makristathis A, Muttenthaler M, Gasche C. Mucosal Biofilms Are an Endoscopic Feature of Irritable Bowel Syndrome and Ulcerative Colitis. Gastroenterology 2021; 161:1245-1256.e20. [PMID: 34146566 PMCID: PMC8527885 DOI: 10.1053/j.gastro.2021.06.024] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 06/11/2021] [Accepted: 06/13/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND & AIMS Irritable bowel syndrome (IBS) and inflammatory bowel diseases result in a substantial reduction in quality of life and a considerable socioeconomic impact. In IBS, diagnosis and treatment options are limited, but evidence for involvement of the gut microbiome in disease pathophysiology is emerging. Here we analyzed the prevalence of endoscopically visible mucosal biofilms in gastrointestinal disease and associated changes in microbiome composition and metabolism. METHODS The presence of mucosal biofilms was assessed in 1426 patients at 2 European university-based endoscopy centers. One-hundred and seventeen patients were selected for in-depth molecular and microscopic analysis using 16S ribosomal RNA gene amplicon-sequencing of colonic biopsies and fecal samples, confocal microscopy with deep learning-based image analysis, scanning electron microscopy, metabolomics, and in vitro biofilm formation assays. RESULTS Biofilms were present in 57% of patients with IBS and 34% of patients with ulcerative colitis compared with 6% of controls (P < .001). These yellow-green adherent layers of the ileum and right-sided colon were microscopically confirmed to be dense bacterial biofilms. 16S-sequencing links the presence of biofilms to a dysbiotic gut microbiome, including overgrowth of Escherichia coli and Ruminococcus gnavus. R. gnavus isolates cultivated from patient biofilms also formed biofilms in vitro. Metabolomic analysis found an accumulation of bile acids within biofilms that correlated with fecal bile acid excretion, linking this phenotype with a mechanism of diarrhea. CONCLUSIONS The presence of mucosal biofilms is an endoscopic feature in a subgroup of IBS and ulcerative colitis with disrupted bile acid metabolism and bacterial dysbiosis. They provide novel insight into the pathophysiology of IBS and ulcerative colitis, illustrating that biofilm can be seen as a tipping point in the development of dysbiosis and disease.
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Affiliation(s)
- Maximilian Baumgartner
- Division of Gastroenterology and Hepatology, Department of Internal Medicine 3, Medical University of Vienna, Vienna, Austria
| | - Michaela Lang
- Division of Gastroenterology and Hepatology, Department of Internal Medicine 3, Medical University of Vienna, Vienna, Austria,Centre for Microbiology and Environmental Systems Science, Department of Microbiology and Ecosystem Science, Division of Microbial Ecology, University of Vienna, Vienna, Austria
| | - Hunter Holley
- Division of Gastroenterology and Hepatology, Department of Internal Medicine 3, Medical University of Vienna, Vienna, Austria,Centre for Microbiology and Environmental Systems Science, Department of Microbiology and Ecosystem Science, Division of Microbial Ecology, University of Vienna, Vienna, Austria
| | - Daniel Crepaz
- Centre for Microbiology and Environmental Systems Science, Department of Microbiology and Ecosystem Science, Division of Microbial Ecology, University of Vienna, Vienna, Austria
| | - Bela Hausmann
- Joint Microbiome Facility of the Medical University of Vienna and the University of Vienna, Vienna, Austria,Division of Microbiology, Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Petra Pjevac
- Centre for Microbiology and Environmental Systems Science, Department of Microbiology and Ecosystem Science, Division of Microbial Ecology, University of Vienna, Vienna, Austria,Joint Microbiome Facility of the Medical University of Vienna and the University of Vienna, Vienna, Austria
| | - Doris Moser
- Department of Cranio-Maxillofacial and Oral Surgery, Medical University of Vienna, Vienna, Austria
| | - Felix Haller
- Division of Gastroenterology and Hepatology, Department of Internal Medicine 3, Medical University of Vienna, Vienna, Austria
| | - Fabian Hof
- Division of Gastroenterology and Hepatology, Department of Internal Medicine 3, Medical University of Vienna, Vienna, Austria
| | - Andrea Beer
- Department of Pathology, Medical University of Vienna, Vienna, Austria
| | - Elisabeth Orgler
- Division of Gastroenterology and Hepatology, Department of Internal Medicine 3, Medical University of Vienna, Vienna, Austria
| | - Adrian Frick
- Division of Gastroenterology and Hepatology, Department of Internal Medicine 3, Medical University of Vienna, Vienna, Austria
| | - Vineeta Khare
- Division of Gastroenterology and Hepatology, Department of Internal Medicine 3, Medical University of Vienna, Vienna, Austria
| | - Rayko Evstatiev
- Division of Gastroenterology and Hepatology, Department of Internal Medicine 3, Medical University of Vienna, Vienna, Austria
| | - Susanne Strohmaier
- Center for Public Health, Department of Epidemiology, Medical University of Vienna, Vienna, Austria
| | - Christian Primas
- Division of Gastroenterology and Hepatology, Department of Internal Medicine 3, Medical University of Vienna, Vienna, Austria
| | - Werner Dolak
- Division of Gastroenterology and Hepatology, Department of Internal Medicine 3, Medical University of Vienna, Vienna, Austria
| | | | - Kristaps Klavins
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Timo Rath
- Ludwig Demling Endoscopy Center of Excellence, Division of Gastroenterology, Friedrich-Alexander-University, Erlangen, Germany
| | - Markus F. Neurath
- Ludwig Demling Endoscopy Center of Excellence, Division of Gastroenterology, Friedrich-Alexander-University, Erlangen, Germany
| | - David Berry
- Centre for Microbiology and Environmental Systems Science, Department of Microbiology and Ecosystem Science, Division of Microbial Ecology, University of Vienna, Vienna, Austria,Joint Microbiome Facility of the Medical University of Vienna and the University of Vienna, Vienna, Austria
| | - Athanasios Makristathis
- Joint Microbiome Facility of the Medical University of Vienna and the University of Vienna, Vienna, Austria,Division of Microbiology, Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Markus Muttenthaler
- Faculty of Chemistry, Institute of Biological Chemistry, University of Vienna, Vienna, Austria,Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Christoph Gasche
- Division of Gastroenterology and Hepatology, Department of Internal Medicine 3, Medical University of Vienna, Vienna, Austria; Loha for Life, Center for Gastroenterlogy and Iron Deficiency, Vienna, Austria.
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86
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Interactions between gut microbiota and berberine, a necessary procedure to understand the mechanisms of berberine. J Pharm Anal 2021; 12:541-555. [PMID: 36105164 PMCID: PMC9463479 DOI: 10.1016/j.jpha.2021.10.003] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 09/23/2021] [Accepted: 10/19/2021] [Indexed: 02/06/2023] Open
Abstract
Berberine (BBR), an isoquinoline alkaloid, has been found in many plants, such as Coptis chinensis Franch and Phellodendron chinense Schneid. Although BBR has a wide spectrum of pharmacological effects, its oral bioavailability is extremely low. In recent years, gut microbiota has emerged as a cynosure to understand the mechanisms of action of herbal compounds. Numerous studies have demonstrated that due to its low bioavailability, BBR can interact with the gut microbiota, thereby exhibiting altered pharmacological effects. However, no systematic and comprehensive review has summarized these interactions and their corresponding influences on pharmacological effects. Here, we describe the direct interactive relationships between BBR and gut microbiota, including regulation of gut microbiota composition and metabolism by BBR and metabolization of BBR by gut microbiota. In addition, the complex interactions between gut microbiota and BBR as well as the side effects and personalized use of BBR are discussed. Furthermore, we provide our viewpoint on future research directions regarding BBR and gut microbiota. This review not only helps to explain the mechanisms underlying BBR activity but also provides support for the rational use of BBR in clinical practice. Low bioavailability enables interactions between berberine and the gut microbiota. Berberine can shape the composition and metabolism of the gut microbiota. Gut microbiota can metabolize and transform berberine. Personalized use of berberine can reduce the occurrence of side effects.
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87
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Wei L, Singh R, Ro S, Ghoshal UC. Gut microbiota dysbiosis in functional gastrointestinal disorders: Underpinning the symptoms and pathophysiology. JGH Open 2021; 5:976-987. [PMID: 34584964 PMCID: PMC8454481 DOI: 10.1002/jgh3.12528] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 03/08/2021] [Indexed: 02/06/2023]
Abstract
Functional gastrointestinal disorders (FGIDs), currently known as disorders of gut-brain interaction, are emerging microbiota-gut-brain abnormalities that are prevalent worldwide. The pathogenesis of FGIDs is heterogeneous and is intertwined with gut microbiota and its derived molecule-modulated mechanisms, including gut dysmotility, visceral hypersensitivity, gut immune abnormalities, abnormal secretion, and impaired barrier function. There has been phenomenal progress in understanding the role of gut microbiota in FGIDs by underpinning the species alternations between healthy and pathological conditions such as FGIDs. However, the precise gut microbiota-directed cellular and molecular pathogeneses of FGIDs are yet enigmatic. Determining the mechanistic link between the gut microbiota and gastrointestinal (GI) diseases has been difficult due to (i) the lack of robust animal models imitating the various aspects of human FGID pathophysiology; (ii) the absence of longitudinal human and/or animal studies to unveil the interaction of the gut microbiota with FGID-relevant pathogenesis; (iii) uncertainty about connections between human and animal studies; and (iv) insufficient data supporting a holistic view of disease-specific pathophysiological changes in FGID patients. These unidentified gaps open possibilities to explore pathological mechanisms directed through gut microbiota dysbiosis in FGIDs. The current treatment options for dysbiotic gut microbiota are limited; dietary interventions, antibiotics, probiotics, and fecal microbiota transplantation are the front-line clinical options. Here, we review the contribution of gut microbiota and its derived molecules in gut homeostasis and explore the possible pathophysiological mechanisms involved in FGIDs leading to potential therapeutics options.
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Affiliation(s)
- Lai Wei
- Department of Physiology and Cell BiologyUniversity of Nevada, Reno, School of MedicineRenoNevadaUSA
| | - Rajan Singh
- Department of Physiology and Cell BiologyUniversity of Nevada, Reno, School of MedicineRenoNevadaUSA
| | - Seungil Ro
- Department of Physiology and Cell BiologyUniversity of Nevada, Reno, School of MedicineRenoNevadaUSA
| | - Uday C Ghoshal
- Department of GastroenterologySanjay Gandhi Postgraduate Institute of Medical SciencesLucknowIndia
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Lei K, Yuan M, Zhou T, Ye Q, Zeng B, Zhou Q, Wei A, Guo L. Research progress in the application of bile acid-drug conjugates: A "trojan horse" strategy. Steroids 2021; 173:108879. [PMID: 34181976 DOI: 10.1016/j.steroids.2021.108879] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 04/25/2021] [Accepted: 06/22/2021] [Indexed: 12/12/2022]
Abstract
Bile acid transporters are highly expressed in intestinal cells and hepatocytes, and they determine the uptake of drugs in cells by modulating cellular entry and exit. In order to improve the oral bioavailability of drugs and investigate the potential application prospects of drugs used to target cancer, numerous studies have adopted these transporters to identify prodrug strategies. Through the connection of covalent bonds between drugs and bile acids, the resulting bile acid-drug conjugates continue to be recognized as similar to natural unmodified bile acid and is translocated by the transporter. The present mini-review provides a brief summary of recent progress of the application of bile acid-drug conjugates based primarily on ASBT, NTCP, and OATP, with the hope of contributing to subsequent research.
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Affiliation(s)
- Kelu Lei
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Minghao Yuan
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Tao Zhou
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Qiang Ye
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Bin Zeng
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Qiang Zhou
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Ailing Wei
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Li Guo
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
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89
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Qu R, Ma Y, Tao L, Bao X, Zhou X, Wang B, Li F, Lu S, Tuo L, Zhan S, Zhang Z, Fu W. Features of colorectal cancer in China stratified by anatomic sites: A hospital-based study conducted in university-affiliated hospitals from 2014 to 2018. Chin J Cancer Res 2021; 33:500-511. [PMID: 34584375 PMCID: PMC8435820 DOI: 10.21147/j.issn.1000-9604.2021.04.07] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 07/26/2021] [Indexed: 12/22/2022] Open
Abstract
Objective The clinical and biological characteristics of colorectal cancer have been found to differ depending on the anatomic site of the cancer. However, for Chinese patients, there is limited information on the proportion of cases at each site and the related features. In this study, we explored the location, distribution and other features of colorectal cancers at each anatomic site in Chinese patients. Methods We conducted a hospital-based study using hospitalization summary reports from 10 Peking University-affiliated hospitals from 2014 to 2018; the reports covered a total of 2,097,347 hospitalizations. Incident cases were chosen as the study population, and their epidemiological features were further analyzed. Results A total of 20,739 colorectal cancer patients were identified. Rectum was the most common location (48.3%) of the cancer, whereas the proportions of patients with distal and proximal colon cancer were 24.5% and 18.6%, respectively. Patients with rectal cancer were predominantly male and were the youngest for all anatomical sites (each P<0.001). The highest proportion of emergency admissions, the longest hospital stays and the highest hospitalization costs were found in patients with proximal colon cancer (each P<0.001). The proximal colon cancer subgroup included the highest proportions of patients with medical histories of cholecystectomy, cholecystolithiasis and/or gallbladder polyps and appendectomy (P=0.009, P<0.001 and P<0.001, respectively). The distal colon cancer subgroup included the highest proportions of patients with medical histories of diabetes and hypertension (P<0.001, respectively). Conclusions The patterns of colorectal cancer observed in this study differ from those reported for Western patients and show a significantly higher proportion of patients with rectal cancer. Different epidemiological features were also found based on anatomic sites. Further studies based on tumor location should be conducted to facilitate more accurate screening and treatment.
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Affiliation(s)
- Ruize Qu
- Department of General Surgery, Peking University Third Hospital, Beijing 100191, China
| | - Yanpeng Ma
- Department of General Surgery, Peking University Third Hospital, Beijing 100191, China
| | - Liyuan Tao
- Clinical Epidemiology Research Center, Peking University Third Hospital, Beijing 100191, China
| | - Xiaoyuan Bao
- Medical Information Center, Peking University Health Science Center, Beijing 100191, China
| | - Xin Zhou
- Department of General Surgery, Peking University Third Hospital, Beijing 100191, China
| | - Bingyan Wang
- Department of General Surgery, Peking University Third Hospital, Beijing 100191, China
| | - Fei Li
- Department of General Surgery, Peking University Third Hospital, Beijing 100191, China
| | - Siyi Lu
- Department of General Surgery, Peking University Third Hospital, Beijing 100191, China
| | - Lin Tuo
- Department of Hospital Management, Peking University Health Science Center, Beijing 100191, China
| | - Siyan Zhan
- Clinical Epidemiology Research Center, Peking University Third Hospital, Beijing 100191, China
| | - Zhipeng Zhang
- Department of General Surgery, Peking University Third Hospital, Beijing 100191, China
| | - Wei Fu
- Department of General Surgery, Peking University Third Hospital, Beijing 100191, China
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Lang JM, Sedgeman LR, Cai L, Layne JD, Wang Z, Pan C, Lee R, Temel RE, Lusis AJ. Dietary and Pharmacologic Manipulations of Host Lipids and Their Interaction With the Gut Microbiome in Non-human Primates. Front Med (Lausanne) 2021; 8:646710. [PMID: 34513856 PMCID: PMC8426918 DOI: 10.3389/fmed.2021.646710] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 08/03/2021] [Indexed: 12/12/2022] Open
Abstract
The gut microbiome influences nutrient processing as well as host physiology. Plasma lipid levels have been associated with the microbiome, although the underlying mechanisms are largely unknown, and the effects of dietary lipids on the gut microbiome in humans are not well-studied. We used a compilation of four studies utilizing non-human primates (Chlorocebus aethiops and Macaca fascicularis) with treatments that manipulated plasma lipid levels using dietary and pharmacological techniques, and characterized the microbiome using 16S rDNA. High-fat diets significantly reduced alpha diversity (Shannon) and the Firmicutes/Bacteroidetes ratio compared to chow diets, even when the diets had different compositions and were applied in different orders. When analyzed for differential abundance using DESeq2, Bulleidia, Clostridium, Ruminococcus, Eubacterium, Coprocacillus, Lachnospira, Blautia, Coprococcus, and Oscillospira were greater in both chow diets while Succinivibrio, Collinsella, Streptococcus, and Lactococcus were greater in both high-fat diets (oleic blend or lard fat source). Dietary cholesterol levels did not affect the microbiome and neither did alterations of plasma lipid levels through treatments of miR-33 antisense oligonucleotide (anti-miR-33), Niemann-Pick C1-Like 1 (NPC1L1) antisense oligonucleotide (ASO), and inducible degrader of LDLR (IDOL) ASO. However, a liver X receptor (LXR) agonist shifted the microbiome and decreased bile acid levels. Fifteen genera increased with the LXR agonist, while seven genera decreased. Pseudomonas increased on the LXR agonist and was negatively correlated to deoxycholic acid, cholic acid, and total bile acids while Ruminococcus was positively correlated with taurolithocholic acid and taurodeoxycholic acid. Seven of the nine bile acids identified in the feces significantly decreased due to the LXR agonist, and total bile acids (nmol/g) was reduced by 62%. These results indicate that plasma lipid levels have, at most, a modest effect on the microbiome, whereas bile acids, derived in part from plasma lipids, are likely responsible for the indirect relationship between lipid levels and the microbiome.
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Affiliation(s)
- Jennifer M. Lang
- Departments of Medicine, Microbiology and Human Genetics, University of California, Los Angeles, Los Angeles, CA, United States
| | - Leslie R. Sedgeman
- Department of Medicine, Division of Cardiology, University of California, Los Angeles, Los Angeles, CA, United States
| | - Lei Cai
- Cardiovascular Research Center, University of Kentucky, Lexington, KY, United States
| | - Joseph D. Layne
- Cardiovascular Research Center, University of Kentucky, Lexington, KY, United States
- Cardiovascular and Metabolic Diseases, Novartis Institutes for Biomedical Research, Cambridge, MA, United States
| | - Zhen Wang
- Department of Physiology, School of Basic Medical Sciences, Shandong University, Jinan, China
| | - Calvin Pan
- Departments of Medicine, Microbiology and Human Genetics, University of California, Los Angeles, Los Angeles, CA, United States
| | - Richard Lee
- Ionis Pharmaceuticals, Carlsbad, CA, United States
| | - Ryan E. Temel
- Cardiovascular and Metabolic Diseases, Novartis Institutes for Biomedical Research, Cambridge, MA, United States
- Department of Physiology, University of Kentucky, Lexington, KY, United States
| | - Aldons J. Lusis
- Departments of Medicine, Microbiology and Human Genetics, University of California, Los Angeles, Los Angeles, CA, United States
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91
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Chen Y, Chen YX. Microbiota-Associated Metabolites and Related Immunoregulation in Colorectal Cancer. Cancers (Basel) 2021; 13:4054. [PMID: 34439208 PMCID: PMC8394439 DOI: 10.3390/cancers13164054] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 06/25/2021] [Accepted: 07/02/2021] [Indexed: 12/19/2022] Open
Abstract
A growing body of research has found close links between the human gut microbiota and colorectal cancer (CRC), associated with the direct actions of specific bacteria and the activities of microbiota-derived metabolites, which are implicated in complex immune responses, thus influencing carcinogenesis. Diet has a significant impact on the structure of the microbiota and also undergoes microbial metabolism. Some metabolites, such as short-chain fatty acids (SCFAs) and indole derivatives, act as protectors against cancer by regulating immune responses, while others may promote cancer. However, the specific influence of these metabolites on the host is conditional. We reviewed the recent insights on the relationships among diet, microbiota-derived metabolites, and CRC, focusing on their intricate immunomodulatory responses, which might influence the progression of colorectal cancer.
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Affiliation(s)
| | - Ying-Xuan Chen
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Shanghai Institute of Digestive Disease, Renji Hospital, School of Medicine, Shanghai JiaoTong University, Shanghai 200001, China;
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92
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Nguyen JT, Riessen R, Zhang T, Kieffer C, Anakk S. Deletion of Intestinal SHP Impairs Short-term Response to Cholic Acid Challenge in Male Mice. Endocrinology 2021; 162:6189092. [PMID: 33769482 PMCID: PMC8256632 DOI: 10.1210/endocr/bqab063] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Indexed: 02/07/2023]
Abstract
Small heterodimer partner (SHP) is a crucial regulator of bile acid (BA) transport and synthesis; however, its intestine-specific role is not fully understood. Here, we report that male intestine-specific Shp knockout (IShpKO) mice exhibit higher intestinal BA but not hepatic or serum BA levels compared with the f/f Shp animals when challenged with an acute (5-day) 1% cholic acid (CA) diet. We also found that BA synthetic genes Cyp7a1 and Cyp8b1 are not repressed to the same extent in IShpKO compared with control mice post-CA challenge. Loss of intestinal SHP did not alter Fxrα messenger RNA (mRNA) but increased Asbt (BA ileal uptake transporter) and Ostα (BA ileal efflux transporter) expression even under chow-fed conditions. Surprisingly, the acute CA diet in IShpKO did not elicit the expected induction of Fgf15 but was able to maintain the suppression of Asbt, and Ostα/β mRNA levels. At the protein level, apical sodium-dependent bile acid transporter (ASBT) was downregulated, while organic solute transporter-α/β (OSTα/β) expression was induced and maintained regardless of diet. Examination of ileal histology in IShpKO mice challenged with acute CA diet revealed reduced villi length and goblet cell numbers. However, no difference in villi length, and the expression of BA regulator and transporter genes, was seen between f/f Shp and IShpKO animals after a chronic (14-day) CA diet, suggesting a potential adaptive response. We found the upregulation of the Pparα-Ugt axis after 14 days of CA diet may reduce the BA burden and compensate for the ileal SHP function. Thus, our study reveals that ileal SHP expression contributes to both overall intestinal structure and BA homeostasis.
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Affiliation(s)
- James T Nguyen
- Department of Molecular & Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Ryan Riessen
- Department of Molecular & Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Tongyu Zhang
- Department of Microbiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Collin Kieffer
- Department of Microbiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Sayeepriyadarshini Anakk
- Department of Molecular & Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Correspondence:Sayeepriyadarshini Anakk, Department of Molecular & Integrative Physiology and Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, 450 Medical Science Building, 506 South Matthews Avenue, Urbana, IL 61801, USA. E-mail:
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93
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Lake A, Rao SSC, Larion S, Spartz H, Kavuri S. Bile Reflux Gastropathy and Functional Dyspepsia. J Neurogastroenterol Motil 2021; 27:400-407. [PMID: 34210905 PMCID: PMC8266494 DOI: 10.5056/jnm20102] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 07/11/2020] [Accepted: 11/10/2020] [Indexed: 12/11/2022] Open
Abstract
Background/Aims The pathoetiology of functional dyspepsia remains unclear; one mechanism could be chemical gastropathy from chronic bile reflux. We aim to examine the association of bile reflux gastropathy with functional dyspepsia and identify predisposing factors. Methods In a retrospective study, patients with functional dyspepsia (Rome III) who completed symptom assessment, esophagogastroduodenoscopy, and biopsies were categorized into 3 groups; bile gastropathy (BG), non-bile gastropathy (NBG), and no gastropathy (NG). Demographics, symptoms, endoscopy, and motility data were compared between groups. Multivariate analysis identified clinical factors associated with BG. Results Of 262 patients (77.5% female), 90 had BG, 121 had NBG, and 51 had NG. Baseline demographics were similar, however, patients with BG reported significantly more severe abdominal pain than NBG or NG groups (P = 0.018). Gastric erythema was significantly more common in BG vs NBG groups (P < 0.001). Cholecystectomy was significantly associated (OR, 6.6; P = 0.003) with the presence of gastropathy in BG compared to NBG or NG group. Patients with cholecystectomy had significantly more severe abdominal pain (P < 0.05), gastric erythema (P < 0.03), and gastritis (P < 0.05), and were more likely to be prescribed narcotic medications (P < 0.004) than patients without cholecystectomy. Conclusion s Bile reflux gastropathy is associated with functional dyspepsia and causes more severe symptoms. Cholecystectomy predisposes to BG and abnormal pain, and could contribute to the pathogenesis of functional dyspepsia.
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Affiliation(s)
- Andrew Lake
- Division of Gastroenterology and Hepatology, Augusta University, GA, USA
| | - Satish S C Rao
- Division of Gastroenterology and Hepatology, Augusta University, GA, USA
| | - Sebastian Larion
- Division of Gastroenterology and Hepatology, Augusta University, GA, USA
| | - Helena Spartz
- Department of Pathology, California University of Science and Medicine, San Bernardino, CA, USA
| | - Sravan Kavuri
- Department of Pathology, Augusta University, GA, USA
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Extreme Acid Modulates Fitness Trade-Offs of Multidrug Efflux Pumps MdtEF-TolC and AcrAB-TolC in Escherichia coli K-12. Appl Environ Microbiol 2021; 87:e0072421. [PMID: 34085861 DOI: 10.1128/aem.00724-21] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Bacterial genomes encode various multidrug efflux pumps (MDR) whose specific conditions for fitness advantage are unknown. We show that the efflux pump MdtEF-TolC, in Escherichia coli, confers a fitness advantage during exposure to extreme acid (pH 2). Our flow cytometry method revealed pH-dependent fitness trade-offs between bile acids (a major pump substrate) and salicylic acid, a membrane-permeant aromatic acid that induces a drug resistance regulon but depletes proton motive force (PMF). The PMF drives MdtEF-TolC and related pumps such as AcrAB-TolC. Deletion of mdtE (with loss of the pump MdtEF-TolC) increased the strain's relative fitness during growth with or without salicylate or bile acids. However, when the growth cycle included a 2-h incubation at pH 2 (below the pH growth range), MdtEF-TolC conferred a fitness advantage. The fitness advantage required bile salts but was decreased by the presence of salicylate, whose uptake is amplified by acid. For comparison, AcrAB-TolC, the primary efflux pump for bile acids, conferred a PMF-dependent fitness advantage with or without acid exposure in the growth cycle. A different MDR pump, EmrAB-TolC, conferred no selective benefit during growth in the presence of bile acids. Without bile acids, all three MDR pumps incurred a large fitness cost with salicylate when exposed at pH 2. These results are consistent with the increased uptake of salicylate at low pH. Overall, we showed that MdtEF-TolC is an MDR pump adapted for transient extreme-acid exposure and that low pH amplifies the salicylate-dependent fitness cost for drug pumps. IMPORTANCE Antibiotics and other drugs that reach the gut must pass through stomach acid. However, little is known of how extreme acid modulates the effect of drugs on gut bacteria. We find that extreme-acid exposure leads to a fitness advantage for a multidrug pump that otherwise incurs a fitness cost. At the same time, extreme acid amplifies the effect of salicylate selection against multidrug pumps. Thus, organic acids and stomach acid could play important roles in regulating multidrug resistance in the gut microbiome. Our flow cytometry assay provides a way to measure the fitness effects of extreme-acid exposure to various membrane-soluble organic acids, including plant-derived nutrients and pharmaceutical agents. Therapeutic acids might be devised to control the prevalence of multidrug pumps in environmental and host-associated habitats.
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95
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Abstract
INTRODUCTION Bile acids, such as chenodeoxycholic acid, play an important role in digestion but are also involved in intestinal motility, fluid homeostasis, and humoral activity. Colonic delivery of sodium chenodeoxycholate (CDC) has demonstrated clinical efficacy in treating irritable bowel syndrome with constipation but was associated with a high frequency of abdominal pain. We hypothesized that these adverse effects were triggered by local super-physiological CDC levels caused by an unfavorable pharmacokinetic profile of the delayed release formulation. METHODS We developed novel release matrix systems based on hydroxypropyl methylcellulose (HPMC) for sustained release of CDC. These included standard HPMC formulations as well as bi-layered formulations to account for potential delivery failures due to low colonic fluid in constipated patients. We evaluated CDC release profiles in silico (pharmacokinetic modeling), in vitro and in vivo in swine (pharmacokinetics, rectal manometry). RESULTS For the delayed release formulation in vitro release studies demonstrated pH triggered dose dumping which was associated with giant colonic contractions in vivo. Release from the bi-layered HPMC systems provided controlled release of CDC while minimizing the frequency of giant contractions and providing enhanced exposure as compared to standard HPMC formulations in vivo. DISCUSSION Bi-phasic CDC release could help treat constipation while mitigating abdominal pain observed in previous clinical trials. Further studies are necessary to demonstrate the therapeutic potential of these systems in humans.
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96
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Qie D, Zhang Y, Gong X, He Y, Qiao L, Lu G, Li Y. SLC10A2 deficiency-induced congenital chronic bile acid diarrhea and stunting. Mol Genet Genomic Med 2021; 9:e1740. [PMID: 34192422 PMCID: PMC8404231 DOI: 10.1002/mgg3.1740] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 05/17/2021] [Accepted: 06/15/2021] [Indexed: 12/18/2022] Open
Abstract
Background Diarrhea is a common occurrence in children below the age of 5 years. In chronic cases, it induces malnutrition that severely stunts growth. Bile acid diarrhea (BAD), caused by malabsorption of bile acid (BA), is a rare form of chronic diarrhea seldom observed in pediatric patients. Here, we present a clinical report on a novel case of chronic BAD, with severe stunting in an infant, induced by a homozygous mutation of SLC10A2. Methods We performed DNA extraction, whole‐exome sequencing analysis, and mutation analysis of SLC10A2 to obtain genetic data on the patient. We subsequently analyzed the patient's clinical and genetic data. Results The patient's clinical manifestations were chronic diarrhea with increased BAs in the feces and extreme stunting, which was diagnosed as BAD. A homozygous mutation of SLC10A2 at the c.313T>C (rs201206937) site was detected. Conclusion Our report reveals the youngest case illustrating the characteristics of BAD induced by genetic variant at 313T>C, and the second case entailing a clear association between a SLC10A2 genetic mutation and the onset of BAD. Our findings expand the mutant spectrum of the SLC10A2 gene and contribute to the refinement of the genotype–phenotype mapping of severe stunting induced by pediatric BAD. Moreover, they highlight the value of molecular genetic screening for diagnosing BAD in young patients.
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Affiliation(s)
- Di Qie
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, Department of Pediatrics, Sichuan University, Chengdu, Sichuan, China
| | - Yulin Zhang
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, Department of Pediatrics, Sichuan University, Chengdu, Sichuan, China
| | - Xue Gong
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, Department of Pediatrics, Sichuan University, Chengdu, Sichuan, China
| | - Yunru He
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, Department of Pediatrics, Sichuan University, Chengdu, Sichuan, China
| | - Lina Qiao
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, Department of Pediatrics, Sichuan University, Chengdu, Sichuan, China
| | - Guoyan Lu
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, Department of Pediatrics, Sichuan University, Chengdu, Sichuan, China
| | - Yifei Li
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, Department of Pediatrics, Sichuan University, Chengdu, Sichuan, China
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Modulation of intestinal stem cell homeostasis by nutrients: a novel therapeutic option for intestinal diseases. Nutr Res Rev 2021; 35:150-158. [PMID: 34100341 DOI: 10.1017/s0954422421000172] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Intestinal stem cells, which are capable of both self-renewal and differentiation to mature cell types, are responsible for maintaining intestinal epithelial homeostasis. Recent evidence indicates that these processes are mediated, in part, through nutritional status in response to diet. Diverse dietary patterns including caloric restriction, fasting, high-fat diets, ketogenic diets and high-carbohydrate diets as well as other nutrients control intestinal stem cell self-renewal and differentiation through nutrient-sensing pathways such as mammalian target of rapamycin and AMP-activated kinase. Herein, we summarise the current understanding of how intestinal stem cells contribute to intestinal epithelial homeostasis and diseases. We also discuss the effects of diet and nutrient-sensing pathways on intestinal stem cell self-renewal and differentiation, as well as their potential application in the prevention and treatment of intestinal diseases.
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98
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Jimenez-Moya B, Martin D, Soler-Rivas C, Barroeta AC, Tres A, Sala R. Acid versus crude oils for broiler chicken diets: In vitro lipid digestion and bioaccessibility. Anim Feed Sci Technol 2021. [DOI: 10.1016/j.anifeedsci.2021.114926] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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99
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Kunst RF, Verkade HJ, Oude Elferink RP, van de Graaf SF. Targeting the Four Pillars of Enterohepatic Bile Salt Cycling; Lessons From Genetics and Pharmacology. Hepatology 2021; 73:2577-2585. [PMID: 33222321 PMCID: PMC8252069 DOI: 10.1002/hep.31651] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 10/29/2020] [Accepted: 11/12/2020] [Indexed: 12/14/2022]
Abstract
Bile salts play a pivotal role in lipid homeostasis, are sensed by specialized receptors, and have been implicated in various disorders affecting the gut or liver. They may play a role either as culprit or as potential panacea. Four very efficient transporters mediate most of the hepatic and intestinal bile salt uptake and efflux, and are each essential for the efficient enterohepatic circulation of bile salts. Starting from the intestinal lumen, conjugated bile salts cross the otherwise impermeable lipid bilayer of (primarily terminal ileal) enterocytes through the apical sodium-dependent bile acid transporter (gene SLC10A2) and leave the enterocyte through the basolateral heteromeric organic solute transporter, which consists of an alpha and beta subunit (encoded by SLC51A and SLC51B). The Na+ -taurocholate cotransporting polypeptide (gene SLC10A1) efficiently clears the portal circulation of bile salts, and the apical bile salt export pump (gene ABCB11) pumps the bile salts out of the hepatocyte into primary bile, against a very steep concentration gradient. Recently, individuals lacking either functional Na+ -taurocholate cotransporting polypeptide or organic solute transporter have been described, completing the quartet of bile acid transport deficiencies, as apical sodium-dependent bile acid transporter and bile salt export pump deficiencies were already known for years. Novel pathophysiological insights have been obtained from knockout mice lacking functional expression of these genes and from pharmacological transporter inhibition in mice or humans. Conclusion: We provide a concise overview of the four main bile salt transport pathways and of their status as possible targets of interventions in cholestatic or metabolic disorders.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B, Member 11/genetics
- ATP Binding Cassette Transporter, Subfamily B, Member 11/metabolism
- Animals
- Bile Acids and Salts/metabolism
- Biological Transport, Active/drug effects
- Biological Transport, Active/physiology
- Drug Development
- Enterohepatic Circulation/drug effects
- Enterohepatic Circulation/physiology
- Humans
- Membrane Transport Proteins/genetics
- Membrane Transport Proteins/metabolism
- Organic Anion Transporters, Sodium-Dependent/antagonists & inhibitors
- Organic Anion Transporters, Sodium-Dependent/genetics
- Organic Anion Transporters, Sodium-Dependent/metabolism
- Receptors, G-Protein-Coupled/genetics
- Receptors, G-Protein-Coupled/metabolism
- Symporters/antagonists & inhibitors
- Symporters/genetics
- Symporters/metabolism
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Affiliation(s)
- Roni F. Kunst
- Tytgat Institute for Liver and Intestinal ResearchAmsterdam UMC, University of AmsterdamAmsterdamthe Netherlands
- Amsterdam Gastroenterology Endocrinology MetabolismAmsterdamthe Netherlands
| | - Henkjan J. Verkade
- Pediatric Gastroenterology/HepatologyDepartment of PediatricsUniversity of GroningenUniversity Medical Center GroningenGroningenthe Netherlands
| | - Ronald P.J. Oude Elferink
- Tytgat Institute for Liver and Intestinal ResearchAmsterdam UMC, University of AmsterdamAmsterdamthe Netherlands
- Amsterdam Gastroenterology Endocrinology MetabolismAmsterdamthe Netherlands
- Department of Gastroenterology and HepatologyAmsterdam UMCUniversity of AmsterdamAmsterdamthe Netherlands
| | - Stan F.J. van de Graaf
- Tytgat Institute for Liver and Intestinal ResearchAmsterdam UMC, University of AmsterdamAmsterdamthe Netherlands
- Amsterdam Gastroenterology Endocrinology MetabolismAmsterdamthe Netherlands
- Department of Gastroenterology and HepatologyAmsterdam UMCUniversity of AmsterdamAmsterdamthe Netherlands
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Deng M, Hu J, Tong R, Guo H, Li X, Liu Y. miR-452-5p regulates the responsiveness of intestinal epithelial cells in inflammatory bowel disease through Mcl-1. Exp Ther Med 2021; 22:813. [PMID: 34131436 PMCID: PMC8193216 DOI: 10.3892/etm.2021.10245] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 03/17/2021] [Indexed: 12/15/2022] Open
Abstract
Inflammatory bowel diseases (IBDs) are chronic immune disorders that occur in the intestinal tract. Previous studies have revealed that intestinal epithelial cells (IECs) play critical roles in the development of IBDs, and therapies targeting IECs hold great potential for the treatment of IBDs. However, the roles of microRNAs (miRs) in the regulation of IEC properties and whether they can be used as targets for IEC regulation and IBD treatment are largely unknown. The aim of the present study was to investigate the role of the miR-452-5p/Mcl-1 axis in the regulation of the properties of IECs during the pathology of IBD. A dextran sulfate sodium-induced mouse model of ulcerative colitis (UC) and an in vitro lipopolysaccharide-stimulated IEC-6 cell model were investigated. The results revealed that miR-452-5p expression in the IECs of the mice increased significantly upon UC induction, and the knockdown of miR-452-5p alleviated the IBD symptoms. Furthermore, the suppression of miR-452-5p downregulated the expression of the inflammatory cytokines IL-6, IL-8 and TNFα, and upregulated the expression of intestinal barrier-associated molecules, namely occludin, zona occludens 1 and mucin-2 in IECs in vitro and in vivo. Notably, the results indicated that miR-452-5p modulated the responses of IECs by negatively regulating the expression of Mcl-1, as the knockdown of Mcl-1 abrogated the effects of miR-452-5p suppression on IECs. The present study suggested that miR-452-5p regulated the responsiveness of IECs to influence the development of UC in an Mcl-1-dependent manner. These observations provide important information to improve the understanding of IBD pathogenesis and indicate that targeting the miR-452-5p-Mcl-1 signaling axis in IECs holds potential for IBD treatment.
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Affiliation(s)
- Ming Deng
- Department of Anorectal Surgery, People's Hospital of Dongxihu District, Wuhan, Hubei 430040, P.R. China
| | - Jianglin Hu
- Department of Anorectal Surgery, People's Hospital of Dongxihu District, Wuhan, Hubei 430040, P.R. China
| | - Rui Tong
- Department of Anorectal Surgery, People's Hospital of Dongxihu District, Wuhan, Hubei 430040, P.R. China
| | - Hongming Guo
- Department of Anorectal Surgery, People's Hospital of Dongxihu District, Wuhan, Hubei 430040, P.R. China
| | - Xuehui Li
- Department of Anorectal Surgery, People's Hospital of Dongxihu District, Wuhan, Hubei 430040, P.R. China
| | - Yan Liu
- Department of Gastrointestinal Surgery, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
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