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Hasegawa N, Oka A, Awoniyi M, Yoshida Y, Tobita H, Ishimura N, Ishihara S. Dynamic ultrasonography for optimizing treatment position in superior mesenteric artery syndrome: Two case reports and review of literature. World J Gastroenterol 2024; 30:499-508. [PMID: 38414592 PMCID: PMC10895595 DOI: 10.3748/wjg.v30.i5.499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 12/11/2023] [Accepted: 01/12/2024] [Indexed: 01/31/2024] Open
Abstract
BACKGROUND Superior mesenteric artery (SMA) syndrome is a rare cause of duodenal obstruction by extrinsic compression between the SMA and the aorta (SMA-Ao). Although the left lateral recumbent position is considered effective in the treatment of SMA syndrome, individual variations in the optimal patient position have been noted. In this report, we present two elderly cases of SMA syndrome that exhibited rapid recovery due to ultrasonographic dynamic evaluation of the optimal position for each patient. CASE SUMMARY Case 1: A 90-year-old man with nausea and vomiting. Following diagnosis of SMA syndrome by computed tomography (CT), ultrasonography (US) revealed the SMA-Ao distance in the supine position (4 mm), which slightly improved in the lateral position (5.7-7.0 mm) without the passage of duodenal contents. However, in the sitting position, the SMA-Ao distance was increased to 15 mm accompanied by improved content passage. Additionally, US indicated enhanced passage upon abdominal massage on the right side. By day 2, the patient could eat comfortably with the optimal position and massage. Case 2: An 87-year-old woman with vomiting. After the diagnosis of SMA syndrome and aspiration pneumonia by CT, dynamic US confirmed the optimal position (SMA-Ao distance was improved to 7 mm in forward-bent position, whereas it remained at 5 mm in the supine position). By day 7 when her pneumonia recovered, she could eat with the optimal position. CONCLUSION The optimal position for SMA syndrome varies among individuals. Dynamic US appears to be a valuable tool in improving patient outcomes.
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Affiliation(s)
- Nobuaki Hasegawa
- Department of Internal Medicine II, Shimane University Faculty of Medicine, Izumo 693-8501, Shimane, Japan
| | - Akihiko Oka
- Department of Internal Medicine II, Shimane University Faculty of Medicine, Izumo 693-8501, Shimane, Japan
| | - Muyiwa Awoniyi
- Department of Gastroenterology, Hepatology and Nutrition, Digestive Disease and Surgery Institute, Hepatology Section, Cleveland Clinic, Cleveland, OH 44195, United States
| | - Yuri Yoshida
- Clinical Laboratory Division, Shimane University Hospital, Izumo 693-8501, Shimane, Japan
| | - Hiroshi Tobita
- Division of Hepatology, Shimane University Hospital, Izumo 693-8501, Japan
| | - Norihisa Ishimura
- Department of Internal Medicine II, Shimane University Faculty of Medicine, Izumo 693-8501, Shimane, Japan
| | - Shunji Ishihara
- Department of Internal Medicine II, Shimane University Faculty of Medicine, Izumo 693-8501, Shimane, Japan
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Bhatt AP, Arnold JW, Awoniyi M, Sun S, Santiago VF, Quintela PH, Walsh K, Ngobeni R, Hansen B, Gulati A, Carroll IM, Azcarate-Peril MA, Fodor AA, Swann J, Bartelt LA. Giardia Antagonizes Beneficial Functions of Indigenous and Therapeutic Intestinal Bacteria during Malnutrition. bioRxiv 2024:2024.01.22.575921. [PMID: 38328247 PMCID: PMC10849499 DOI: 10.1101/2024.01.22.575921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Undernutrition in children commonly disrupts the structure and function of the small intestinal microbial community, leading to enteropathies, compromised metabolic health, and impaired growth and development. The mechanisms by which diet and microbes mediate the balance between commensal and pathogenic intestinal flora remain elusive. In a murine model of undernutrition, we investigated the direct interactions Giardia lamblia, a prevalent small intestinal pathogen, on indigenous microbiota and specifically on Lactobacillus strains known for their mucosal and growth homeostatic properties. Our research reveals that Giardia colonization shifts the balance of lactic acid bacteria, causing a relative decrease in Lactobacillus spp . and an increase in Bifidobacterium spp . This alteration corresponds with a decrease in multiple indicators of mucosal and nutritional homeostasis. Additionally, protein-deficient conditions coupled with Giardia infection exacerbate the rise of primary bile acids and susceptibility to bile acid-induced intestinal barrier damage. In epithelial cell monolayers, Lactobacillus spp . mitigated bile acid-induced permeability, showing strain-dependent protective effects. In vivo, L. plantarum, either alone or within a Lactobacillus spp consortium, facilitated growth in protein-deficient mice, an effect attenuated by Giardia , despite not inhibiting Lactobacillus colonization. These results highlight Giardia's potential role as a disruptor of probiotic functional activity, underscoring the imperative for further research into the complex interactions between parasites and bacteria under conditions of nutritional deficiency.
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Oka A, Kawashima K, Kishimoto K, Kotani S, Fukunaga M, Fukuba N, Mishima Y, Oshima N, Ishimura N, Awoniyi M, Ishihara S. Validation of rapid fecal calprotectin assay using particle enhanced turbidimetric immunoassay for inflammatory bowel disease. Sci Rep 2024; 14:1653. [PMID: 38238442 PMCID: PMC10796650 DOI: 10.1038/s41598-024-51580-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Accepted: 01/07/2024] [Indexed: 01/22/2024] Open
Abstract
Fecal calprotectin (FC) is a promising biomarker for diagnosis and treatment of inflammatory bowel disease, ulcerative colitis (UC), and Crohn's disease. An enzyme immunoassay (EIA) is widely used for FC detection, though the considerable lag time, up to several days, causes clinical management delay. This study was performed to examine the new rapid kit fCAL-turbo, which is based on a particle-enhanced turbidimetric immunoassay (15 min), by comparing FC values with other EIAs (EliA, PhiCal, Bühlmann) and endoscopic scores. Using 94 samples, fCAL-turbo showed strong significant positive correlations with the other kits (Spearman's r = 0.9178-0.9886). Of 74 UC patients, 69 underwent an endoscopy and fCAL-turbo reflected endoscopic activity with a moderate correlation with Mayo endoscopic subscore (MES) (r = 0.6945, others r = 0.6682-0.7013). Receiver operating characteristic analyses based on MES 0 versus 1-3 showed a similar efficacy as compared to the other kits (cut-off and area under the curve: 89.70 µg/g and 0.8592, respectively, others 62.35-138.4 µg/g and 0.8280-0.8611, respectively). Furthermore, multiple regression analysis confirmed that fCAL-turbo results significantly contributed to prediction of MES 0 with a higher t-value as compared to the other biomarkers. fCAL-turbo showed strong correlations with the other kits and also demonstrated excellent performance for predicting endoscopic remission of UC.
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Affiliation(s)
- Akihiko Oka
- Department of Internal Medicine II, Shimane University Faculty of Medicine, 89-1, Izumo, Shimane, 693-8501, Japan
| | - Kousaku Kawashima
- Department of Internal Medicine II, Shimane University Faculty of Medicine, 89-1, Izumo, Shimane, 693-8501, Japan.
- Inflammatory Bowel Disease Center, Shimane University Hospital, Izumo, Shimane, Japan.
- Department of Internal Medicine, Matsue Seikyo General Hospital, Matsue, Shimane, Japan.
| | - Kenichi Kishimoto
- Department of Internal Medicine II, Shimane University Faculty of Medicine, 89-1, Izumo, Shimane, 693-8501, Japan
| | - Satoshi Kotani
- Department of Internal Medicine II, Shimane University Faculty of Medicine, 89-1, Izumo, Shimane, 693-8501, Japan
| | - Mai Fukunaga
- Department of Internal Medicine II, Shimane University Faculty of Medicine, 89-1, Izumo, Shimane, 693-8501, Japan
| | - Nobuhiko Fukuba
- Department of Internal Medicine II, Shimane University Faculty of Medicine, 89-1, Izumo, Shimane, 693-8501, Japan
| | - Yoshiyuki Mishima
- Department of Internal Medicine II, Shimane University Faculty of Medicine, 89-1, Izumo, Shimane, 693-8501, Japan
| | - Naoki Oshima
- Department of Internal Medicine II, Shimane University Faculty of Medicine, 89-1, Izumo, Shimane, 693-8501, Japan
| | - Norihisa Ishimura
- Department of Internal Medicine II, Shimane University Faculty of Medicine, 89-1, Izumo, Shimane, 693-8501, Japan
| | - Muyiwa Awoniyi
- Department of Inflammation and Immunity, Digestive Disease and Surgery Institute, Division of Gastroenterology, Hepatology and Nutrition, Cleveland Clinic Lerner Research Institute, Cleveland, OH, USA
| | - Shunji Ishihara
- Department of Internal Medicine II, Shimane University Faculty of Medicine, 89-1, Izumo, Shimane, 693-8501, Japan
- Inflammatory Bowel Disease Center, Shimane University Hospital, Izumo, Shimane, Japan
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4
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Oka A, Awoniyi M, Hasegawa N, Yoshida Y, Tobita H, Ishimura N, Ishihara S. Superior mesenteric artery syndrome: Diagnosis and management. World J Clin Cases 2023; 11:3369-3384. [PMID: 37383896 PMCID: PMC10294176 DOI: 10.12998/wjcc.v11.i15.3369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 02/13/2023] [Accepted: 04/18/2023] [Indexed: 05/25/2023] Open
Abstract
Superior mesenteric artery (SMA) syndrome (also known as Wilkie's syndrome, cast syndrome, or aorto-mesenteric compass syndrome) is an obstruction of the duodenum caused by extrinsic compression between the SMA and the aorta. The median age of patients is 23 years old (range 0-91 years old) and predominant in females over males with a ratio of 3:2. The symptoms are variable, consisting of postprandial abdominal pain, nausea and vomiting, early satiety, anorexia, and weight loss and can mimic anorexia nervosa or functional dyspepsia. Because recurrent vomiting leads to aspiration pneumonia or respiratory depression via metabolic alkalosis, early diagnosis is required. The useful diagnostic modalities are computed tomography as a standard tool and ultrasonography, which has advantages in safety and capability of real-time assessments of SMA mobility and duodenum passage. The initial treatment is usually conservative, including postural change, gastroduodenal decompression, and nutrient management (success rates: 70%-80%). If conservative therapy fails, surgical treatment (i.e., laparoscopic duodenojejunostomy) is recommended (success rates: 80%-100%).
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Affiliation(s)
- Akihiko Oka
- Department of Internal Medicine II, Shimane University Faculty of Medicine, Izumo 693-8501, Shimane, Japan
| | - Muyiwa Awoniyi
- Department of Gastroenterology, Hepatology and Nutrition, Digestive Disease and Surgery Institute, Hepatology Section, Cleveland Clinic, Cleveland, OH 44195, United States
| | - Nobuaki Hasegawa
- Department of Internal Medicine II, Shimane University Faculty of Medicine, Izumo 693-8501, Shimane, Japan
| | - Yuri Yoshida
- Clinical Laboratory Division, Shimane University Hospital, Izumo 693-8501, Shimane, Japan
| | - Hiroshi Tobita
- Division of Hepatology, Shimane University Hospital, Izumo 693-8501, Shimane, Japan
| | - Norihisa Ishimura
- Department of Internal Medicine II, Shimane University Faculty of Medicine, Izumo 693-8501, Shimane, Japan
| | - Shunji Ishihara
- Department of Internal Medicine II, Shimane University Faculty of Medicine, Izumo 693-8501, Shimane, Japan
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5
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Giallourou N, Arnold J, McQuade ETR, Awoniyi M, Becket RVT, Walsh K, Herzog J, Gulati AS, Carroll IM, Montgomery S, Quintela PH, Faust AM, Singer SM, Fodor AA, Ahmad T, Mahfuz M, Mduma E, Walongo T, Guerrant RL, Balfour Sartor R, Swann JR, Kosek MN, Bartelt LA. Giardia hinders growth by disrupting nutrient metabolism independent of inflammatory enteropathy. Nat Commun 2023; 14:2840. [PMID: 37202423 PMCID: PMC10195804 DOI: 10.1038/s41467-023-38363-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 04/27/2023] [Indexed: 05/20/2023] Open
Abstract
Giardia lamblia (Giardia) is among the most common intestinal pathogens in children in low- and middle-income countries (LMICs). Although Giardia associates with early-life linear growth restriction, mechanistic explanations for Giardia-associated growth impairments remain elusive. Unlike other intestinal pathogens associated with constrained linear growth that cause intestinal or systemic inflammation or both, Giardia seldom associates with chronic inflammation in these children. Here we leverage the MAL-ED longitudinal birth cohort and a model of Giardia mono-association in gnotobiotic and immunodeficient mice to propose an alternative pathogenesis of this parasite. In children, Giardia results in linear growth deficits and gut permeability that are dose-dependent and independent of intestinal markers of inflammation. The estimates of these findings vary between children in different MAL-ED sites. In a representative site, where Giardia associates with growth restriction, infected children demonstrate broad amino acid deficiencies, and overproduction of specific phenolic acids, byproducts of intestinal bacterial amino acid metabolism. Gnotobiotic mice require specific nutritional and environmental conditions to recapitulate these findings, and immunodeficient mice confirm a pathway independent of chronic T/B cell inflammation. Taken together, we propose a new paradigm that Giardia-mediated growth faltering is contingent upon a convergence of this intestinal protozoa with nutritional and intestinal bacterial factors.
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Affiliation(s)
- Natasa Giallourou
- Division of Digestive Diseases, Department of Metabolism, Digestion, and Reproduction, Faculty of Medicine, Imperial College London, London, UK.
- Centre of Excellence in Biobanking and Biomedical Research, Molecular Medicine Research Center, University of Cyprus, Nicosia, Cyprus.
| | - Jason Arnold
- Center for Gastrointestinal Biology and Disease, Division of Gastroenterology and Hepatology, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Molecular Genetics and Microbiology, Duke Microbiome Center, Duke University School of Medicine, Durham, NC, 27710, USA
| | | | - Muyiwa Awoniyi
- Center for Gastrointestinal Biology and Disease, Division of Gastroenterology and Hepatology, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Rose Viguna Thomas Becket
- Departments of Pediatrics and Pathology and Laboratory Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Kenneth Walsh
- Institute for Infectious Diseases and Global Health and the Division of Infectious Diseases, Department of Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Jeremy Herzog
- Center for Gastrointestinal Biology and Disease, Division of Gastroenterology and Hepatology, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Ajay S Gulati
- Departments of Pediatrics and Pathology and Laboratory Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Ian M Carroll
- Department of Nutrition, Gillings School of Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Stephanie Montgomery
- Department of Pathology and Laboratory Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | | | | | - Steven M Singer
- Department of Biology, Georgetown University, Washington, DC, USA
| | - Anthony A Fodor
- The University of North Carolina Charlotte, Department of Bioinformatics and Genomics, Charlotte, USA
| | - Tahmeed Ahmad
- International Center for Diarrheal Disease Research, Dhaka, Bangladesh
| | - Mustafa Mahfuz
- International Center for Diarrheal Disease Research, Dhaka, Bangladesh
| | - Esto Mduma
- Haydom Global Health Research Centre, Haydom Lutheran Hospital, Haydom, Tanzania
| | - Thomas Walongo
- Haydom Global Health Research Centre, Haydom Lutheran Hospital, Haydom, Tanzania
| | - Richard L Guerrant
- Division of Infectious Diseases and International Health, Department of Medicine, The University of Virginia Charlottesville, Charlottesville, VA, USA
| | - R Balfour Sartor
- Center for Gastrointestinal Biology and Disease, Division of Gastroenterology and Hepatology, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Jonathan R Swann
- School of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Margaret N Kosek
- Division of Infectious Diseases and International Health, Department of Medicine, The University of Virginia Charlottesville, Charlottesville, VA, USA
| | - Luther A Bartelt
- Center for Gastrointestinal Biology and Disease, Division of Gastroenterology and Hepatology, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
- Institute for Infectious Diseases and Global Health and the Division of Infectious Diseases, Department of Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
- Department of Microbiology & Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
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6
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Awoniyi M, Wang J, Ngo B, Meadows V, Tam J, Viswanathan A, Lai Y, Montgomery S, Farmer M, Kummen M, Thingholm L, Schramm C, Bang C, Franke A, Lu K, Zhou H, Bajaj JS, Hylemon PB, Ting J, Popov YV, Hov JR, Francis HL, Sartor RB. Protective and aggressive bacterial subsets and metabolites modify hepatobiliary inflammation and fibrosis in a murine model of PSC. Gut 2023; 72:671-685. [PMID: 35705368 PMCID: PMC9751228 DOI: 10.1136/gutjnl-2021-326500] [Citation(s) in RCA: 27] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Accepted: 05/16/2022] [Indexed: 01/14/2023]
Abstract
OBJECTIVE Conflicting microbiota data exist for primary sclerosing cholangitis (PSC) and experimental models. GOAL define the function of complex resident microbes and their association relevant to PSC patients by studying germ-free (GF) and antibiotic-treated specific pathogen-free (SPF) multidrug-resistant 2 deficient (mdr2-/- ) mice and microbial profiles in PSC patient cohorts. DESIGN We measured weights, liver enzymes, RNA expression, histological, immunohistochemical and fibrotic biochemical parameters, faecal 16S rRNA gene profiling and metabolomic endpoints in gnotobiotic and antibiotic-treated SPF mdr2-/- mice and targeted metagenomic analysis in PSC patients. RESULTS GF mdr2-/- mice had 100% mortality by 8 weeks with increasing hepatic bile acid (BA) accumulation and cholestasis. Early SPF autologous stool transplantation rescued liver-related mortality. Inhibition of ileal BA transport attenuated antibiotic-accelerated liver disease and decreased total serum and hepatic BAs. Depletion of vancomycin-sensitive microbiota exaggerated hepatobiliary disease. Vancomycin selectively decreased Lachnospiraceae and short-chain fatty acids (SCFAs) but expanded Enterococcus and Enterobacteriaceae. Antibiotics increased Enterococcus faecalis and Escherichia coli liver translocation. Colonisation of GF mdr2-/- mice with translocated E. faecalis and E. coli strains accelerated hepatobiliary inflammation and mortality. Lachnospiraceae colonisation of antibiotic pretreated mdr2-/- mice reduced liver fibrosis, inflammation and translocation of pathobionts, and SCFA-producing Lachnospiraceae and purified SCFA decreased fibrosis. Faecal Lachnospiraceae negatively associated, and E. faecalis/ Enterobacteriaceae positively associated, with PSC patients' clinical severity by Mayo risk scores. CONCLUSIONS We identified novel functionally protective and detrimental resident bacterial species in mdr2-/- mice and PSC patients with associated clinical risk score. These insights may guide personalised targeted therapeutic interventions in PSC patients.
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Affiliation(s)
- Muyiwa Awoniyi
- Division of Gastroenterology and Hepatology, University of North Carolina System, Chapel Hill, North Carolina, USA
- Center for Gastrointestinal Biology and Disease, University of North Carolina System, Chapel Hill, North Carolina, USA
| | - Jeremy Wang
- Center for Gastrointestinal Biology and Disease, University of North Carolina System, Chapel Hill, North Carolina, USA
- Department of Genetics, University of North Carolina System, Chapel Hill, North Carolina, USA
| | - Billy Ngo
- Center for Gastrointestinal Biology and Disease, University of North Carolina System, Chapel Hill, North Carolina, USA
| | - Vik Meadows
- Department of Gastroenterology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Jason Tam
- Department of Microbiology and Immunology, University of North Carolina System, Chapel Hill, North Carolina, USA
| | - Amba Viswanathan
- Center for Gastrointestinal Biology and Disease, University of North Carolina System, Chapel Hill, North Carolina, USA
| | - Yunjia Lai
- Department of Environmental Sciences and Engineering, Gillings School of Global School of Public Health, University of North Carolina System, Chapel Hill, North Carolina, USA
| | - Stephanie Montgomery
- Department of Pathology, Division of Comparative Medicine, and Lineberger Comprehensive Cancer Center, University of North Carolina System, Chapel Hill, North Carolina, USA
| | - Morgan Farmer
- Center for Gastrointestinal Biology and Disease, University of North Carolina System, Chapel Hill, North Carolina, USA
| | - Martin Kummen
- Norwegian PSC Research Center, Oslo University Hospital, Rikshospitalet, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Louise Thingholm
- Institute of Clinical Molecular Biology, Zentrums für Molekulare Biowissenschaften, Kiel, Schleswig-Holstein, Germany
| | | | - Corinna Bang
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Andre Franke
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Kun Lu
- Department of Environmental Sciences and Engineering, Gillings School of Global School of Public Health, University of North Carolina System, Chapel Hill, North Carolina, USA
- Department of Environmental Sciences and Engineering, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Huiping Zhou
- Department of Microbiology and Immunology, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA
- Department of Research, McGuire Veterans Affairs Medical Cente, Richmond, Virginia, USA
- Virginia Commonwealth University Medical Center, Richmond, Virginia, USA
| | - Jasmohan S Bajaj
- Department of Microbiology and Immunology, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA
- Department of Research, McGuire Veterans Affairs Medical Cente, Richmond, Virginia, USA
- Virginia Commonwealth University Medical Center, Richmond, Virginia, USA
| | - Phillip B Hylemon
- Department of Microbiology and Immunology, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA
- Department of Research, McGuire Veterans Affairs Medical Cente, Richmond, Virginia, USA
- Virginia Commonwealth University Medical Center, Richmond, Virginia, USA
| | - Jenny Ting
- Department of Microbiology and Immunology, University of North Carolina System, Chapel Hill, North Carolina, USA
- UNC Lineberger Comprehensive Cancer Center, Center for Translational Immunology, University of North Carolina, Chapel Hill, Chapel Hill, North Carolina, USA
| | - Yury V Popov
- Department of Gastroenterology, Beth Israel Deaconess Medical Center/Harvard Medical School, Boston, Massachusetts, USA
| | - Johannes Roksund Hov
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Norwegian PSC Research Center, Department of Transplantation Medicine, Oslo University Hospital, Oslo, Norway
| | - Heather L Francis
- Indiana University School of Medicine, Indianapolis, Indiana, USA
- Richard L. Roudebush VA Medical Center, Indianapolis, Indiana, USA
| | - Ryan Balfour Sartor
- Division of Gastroenterology and Hepatology, University of North Carolina System, Chapel Hill, North Carolina, USA
- Center for Gastrointestinal Biology and Disease, University of North Carolina System, Chapel Hill, North Carolina, USA
- Department of Microbiology and Immunology, University of North Carolina System, Chapel Hill, North Carolina, USA
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7
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van der Lelie D, Oka A, Taghavi S, Umeno J, Fan TJ, Merrell KE, Watson SD, Ouellette L, Liu B, Awoniyi M, Lai Y, Chi L, Lu K, Henry CS, Sartor RB. Rationally designed bacterial consortia to treat chronic immune-mediated colitis and restore intestinal homeostasis. Nat Commun 2021; 12:3105. [PMID: 34050144 PMCID: PMC8163890 DOI: 10.1038/s41467-021-23460-x] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 04/29/2021] [Indexed: 12/12/2022] Open
Abstract
Environmental factors, mucosal permeability and defective immunoregulation drive overactive immunity to a subset of resident intestinal bacteria that mediate multiple inflammatory conditions. GUT-103 and GUT-108, live biotherapeutic products rationally designed to complement missing or underrepresented functions in the dysbiotic microbiome of IBD patients, address upstream targets, rather than targeting a single cytokine to block downstream inflammation responses. GUT-103, composed of 17 strains that synergistically provide protective and sustained engraftment in the IBD inflammatory environment, prevented and treated chronic immune-mediated colitis. Therapeutic application of GUT-108 reversed established colitis in a humanized chronic T cell-mediated mouse model. It decreased pathobionts while expanding resident protective bacteria; produced metabolites promoting mucosal healing and immunoregulatory responses; decreased inflammatory cytokines and Th-1 and Th-17 cells; and induced interleukin-10-producing colonic regulatory cells, and IL-10-independent homeostatic pathways. We propose GUT-108 for treating and preventing relapse for IBD and other inflammatory conditions characterized by unbalanced microbiota and mucosal permeability.
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Affiliation(s)
| | - Akihiko Oka
- Departments of Medicine, Microbiology and Immunology, Center for Gastrointestinal Biology and Disease, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,Department of Internal Medicine II, Shimane University Faculty of Medicine, Shimane, Japan
| | | | - Junji Umeno
- Departments of Medicine, Microbiology and Immunology, Center for Gastrointestinal Biology and Disease, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Fukuoka, Japan
| | | | | | | | | | - Bo Liu
- Departments of Medicine, Microbiology and Immunology, Center for Gastrointestinal Biology and Disease, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Muyiwa Awoniyi
- Departments of Medicine, Microbiology and Immunology, Center for Gastrointestinal Biology and Disease, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Yunjia Lai
- Department of Environmental Sciences and Engineering, Gillings School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Liang Chi
- Department of Environmental Sciences and Engineering, Gillings School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Kun Lu
- Department of Environmental Sciences and Engineering, Gillings School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | | | - R Balfour Sartor
- Departments of Medicine, Microbiology and Immunology, Center for Gastrointestinal Biology and Disease, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
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8
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Awoniyi M, Miller SI, Wilson CB, Hajjar AM, Smith KD. Homeostatic regulation of Salmonella-induced mucosal inflammation and injury by IL-23. PLoS One 2012; 7:e37311. [PMID: 22624013 PMCID: PMC3356277 DOI: 10.1371/journal.pone.0037311] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Accepted: 04/19/2012] [Indexed: 12/14/2022] Open
Abstract
IL-12 and IL-23 regulate innate and adaptive immunity to microbial pathogens through influencing the expression of IFN-γ, IL-17, and IL-22. Herein we define the roles of IL-12 and IL-23 in regulating host resistance and intestinal inflammation during acute Salmonella infection. We find that IL-23 alone is dispensable for protection against systemic spread of bacteria, but synergizes with IL-12 for optimal protection. IL-12 promotes the production of IFN-γ by NK cells, which is required for resistance against Salmonella and also for induction of intestinal inflammation and epithelial injury. In contrast, IL-23 controls the severity of inflammation by inhibiting IL-12A expression, reducing IFN-γ and preventing excessive mucosal injury. Our studies demonstrate that IL-23 is a homeostatic regulator of IL-12-dependent, IFN-γ-mediated intestinal inflammation.
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Affiliation(s)
- Muyiwa Awoniyi
- Department of Pathology and Program in Molecular and Cellular Biology, University of Washington, Seattle, Washington, United States of America
| | - Samuel I. Miller
- Departments of Medicine, Genome Sciences and Microbiology, University of Washington, Seattle, Washington, United States of America
| | - Christopher B. Wilson
- Department of Immunology, University of Washington, Seattle, Washington, United States of America
| | - Adeline M. Hajjar
- Department of Comparative Medicine, University of Washington, Seattle, Washington, United States of America
| | - Kelly D. Smith
- Department of Pathology and Program in Molecular and Cellular Biology, University of Washington, Seattle, Washington, United States of America
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Orlichenko L, Weller SG, Cao H, Krueger EW, Awoniyi M, Beznoussenko G, Buccione R, McNiven MA. Caveolae mediate growth factor-induced disassembly of adherens junctions to support tumor cell dissociation. Mol Biol Cell 2009; 20:4140-52. [PMID: 19641024 DOI: 10.1091/mbc.e08-10-1043] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Remodeling of cell-cell contacts through the internalization of adherens junction proteins is an important event during both normal development and the process of tumor cell metastasis. Here we show that the integrity of tumor cell-cell contacts is disrupted after epidermal growth factor (EGF) stimulation through caveolae-mediated endocytosis of the adherens junction protein E-cadherin. Caveolin-1 and E-cadherin closely associated at cell borders and in internalized structures upon stimulation with EGF. Furthermore, preventing caveolae assembly through reduction of caveolin-1 protein or expression of a caveolin-1 tyrosine phospho-mutant resulted in the accumulation of E-cadherin at cell borders and the formation of tightly adherent cells. Most striking was the fact that exogenous expression of caveolin-1 in tumor cells that contain tight, well-defined, borders resulted in a dramatic dispersal of these cells. Together, these findings provide new insights into how cells might disassemble cell-cell contacts to help mediate the remodeling of adherens junctions, and tumor cell metastasis and invasion.
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Affiliation(s)
- Lidiya Orlichenko
- Mayo Clinic, Department of Biochemistry and Molecular Biology and the Miles and Shirley Fiterman Center for Digestive Diseases, Rochester, MN 55905, USA
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Abstract
It is well-known that dynamin 2 (Dyn2) participates in clathrin- and caveolae-mediated endocytosis; however, the role of Dyn2 in coat-independent endocytic processes remains controversial. Here we demonstrate a role for specific spliced variants of Dyn2 in the micropinocytosis of fluid in epithelial cells, independent of coat-mediated endocytic pathways. A general inhibition of Dyn2 was first performed using either microinjection of anti-dynamin antibodies or Dyn2-siRNA treatment. Both of these methods resulted in reduced uptake of transferrin, a marker for clathrin-mediated endocytosis, and, under unstimulated conditions, reduced the uptake of the fluid-phase markers dextran and horseradish peroxidase (HRP). By contrast, cells treated similarly but stimulated with serum or EGF internalized substantial amounts of dextran or HRP, indicating that Dyn2 is not required for stimulated fluid uptake via macropinocytosis. We next tested whether a specific spliced variant might selectively affect fluid-phase endocytosis. Mutation of specific Dyn2 spliced variants resulted in a differential attenuation of transferrin and dextran internalization. Furthermore, the reduction in fluid uptake in Dyn2-siRNA-treated cells was only rescued upon re-expression of select spliced variants. These findings suggest that Dyn2 function is required for the coat-independent internalization of fluid through endocytic pathways distinct from macropinocytosis and, in addition, implicate different Dyn2 spliced variants in specific endocytic functions.
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Affiliation(s)
- Hong Cao
- Mayo Clinic, Department of Biochemistry and Molecular Biology and the Miles and Shirley Fiterman Center for Digestive Diseases, Rochester, MN 55905, USA
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Sloane DE, Tedla N, Awoniyi M, Macglashan DW, Borges L, Austen KF, Arm JP. Leukocyte immunoglobulin-like receptors: novel innate receptors for human basophil activation and inhibition. Blood 2004; 104:2832-9. [PMID: 15242876 DOI: 10.1182/blood-2004-01-0268] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Basophils, recruited from the blood to tissues, have been implicated by their presence in diverse allergic disorders including bronchial asthma, allergic rhinitis, and cutaneous contact hypersensitivity. We hypothesized that like other leukocytes involved in inflammatory responses, basophils would express members of the leukocyte immunoglobulin-like receptor (LIR) family of immuno-regulatory molecules on their cell surface. We identified LIR7, an activating member coupled to the common Fc receptor gamma chain, and LIR3, an inhibitory member containing cytoplasmic immunoreceptor tyrosine-based inhibitory motifs, on these cells from human peripheral blood. Cross-linking of LIR7 resulted in the concentration-dependent net release of histamine (29.8 +/- 10.8%) and cysteinyl leukotrienes (cysLTs) (31.4 +/- 8.7 ng/10(6) basophils) that were maximal at 30 minutes, and of interleukin-4 (IL-4) (410.2 +/- 61.6 pg/10(6) basophils) that was maximal at 4 hours and comparable with the response initiated by cross-linking of the high-affinity receptor for immunoglobulin E (FcepsilonRI). Coligation of LIR3 to LIR7 or to FcepsilonRI by means of a second monoclonal antibody significantly inhibited net histamine release, cysLT production, and IL-4 generation. That LIR3 is profoundly counter-regulatory for both adaptive and innate receptors suggests a broad role in containment of the inflammatory response.
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Affiliation(s)
- David E Sloane
- Department of Medicine, Harvard Medical School, Boston, MA, USA
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Sloane D, Tedla N, Awoniyi M, MacGlashan D, Austen K, Arm J. Modulation of basophil function by leukocyte immunoglobulin-like receptors (LIRs). J Allergy Clin Immunol 2003. [DOI: 10.1016/s0091-6749(03)80728-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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