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Igwe JK, Surapaneni PK, Cruz E, Cole C, Njoku K, Kim J, Alaribe U, Weze K, Mohammed B. Bariatric Surgery and Inflammatory Bowel Disease: National Trends and Outcomes Associated with Procedural Sleeve Gastrectomy vs Historical Bariatric Surgery Among US Hospitalized Patients 2009-2020. Obes Surg 2023; 33:3472-3486. [PMID: 37804470 PMCID: PMC10603008 DOI: 10.1007/s11695-023-06833-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 09/04/2023] [Accepted: 09/15/2023] [Indexed: 10/09/2023]
Abstract
PURPOSE The association between bariatric surgery and IBD-related inpatient outcomes is not well characterized. We report, analyze, and compare inpatient trends and outcomes among encounters with a history of bariatric surgery (Hx-MBS) compared to those receiving bariatric surgery during index admission (PR-MBS) admitted from 2009 to 2020. METHODS Retrospective cohort design: the 2009-2020 National Inpatient Sample (NIS) databases were used to identify hospital encounters with patients aged ≥ 18 years with a history of MBS (Hx-MBS) or with procedure coding indicating MBS procedure (PR-MBS) according to International Classification of Diseases, Ninth (ICD-9-CM/ ICD-9-PCS) or Tenth Revision (ICD-10-CM/ICD-10-PCS) Clinical Modification/Procedure Coding System during index admission (ICD-9-CM: V4586; ICD-10-CM: Z9884; ICD-9-PR: 4382, 4389; ICD-10-PR: 0DB64Z3, 0DB63ZZ). Pearson χ2 analysis, analysis of variance, multivariable regression analyses, and propensity matching on independent variables were conducted to analyze significant associations between variables and for primary outcome inflammatory bowel disease-related admission, and secondary outcomes: diagnosis of nonalcoholic steatohepatitis, nonalcoholic fatty liver disease, or chronic mesenteric ischemia during admission. RESULTS We identified 3,365,784 (76.20%) Hx-MBS hospitalizations and 1,050,900 hospitalizations with PR-MBS (23.80%). Propensity score matching analysis demonstrated significantly higher odds of inflammatory bowel disease, and chronic mesenteric ischemia for Hx-MBS compared to PR-MBS, and significantly lower odds of nonalcoholic steatohepatitis and nonalcoholic fatty liver disease for Hx-MBS compared to PR-MBS. CONCLUSION In our study, Hx-MBS was associated with significantly increased odds of inflammatory bowel disease and other GI pathologies compared to matched controls. The mechanism by which this occurs is unclear. Additional studies are needed to examine these findings.
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Affiliation(s)
- Joseph-Kevin Igwe
- School of Medicine, Department of Medicine, Stanford University, 291 Campus Drive, Stanford, CA, 94305, USA.
- Department of Medicine, Morehouse School of Medicine, 720 Westview Dr. SW, Atlanta, GA, 30313, USA.
- American Heart Association Strategically Focused Research Network on the Science of Diversity in Clinical Trials Research Fellowship, 5001 S Miami Blvd #300, Durham, NC, 27703, USA.
| | | | - Erin Cruz
- School of Medicine, Department of Medicine, Stanford University, 291 Campus Drive, Stanford, CA, 94305, USA
| | - Cedric Cole
- Department of Medicine, Morehouse School of Medicine, 720 Westview Dr. SW, Atlanta, GA, 30313, USA
| | - Kingsley Njoku
- Department of Medicine, Emory University School of Medicine, Atlanta, USA
| | - Jisoo Kim
- Department of Surgery, Texas Tech University Health Sciences Center at El Paso, El Paso, USA
| | - Ugo Alaribe
- School of Medicine, Caribbean Medical University, Willemstad, USA
| | - Kelechi Weze
- Department of Medicine, Morehouse School of Medicine, 720 Westview Dr. SW, Atlanta, GA, 30313, USA
| | - Bilal Mohammed
- Department of Medicine, Ascension Saint Vincent, Indianapolis, USA
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Yan D, Ye S, He Y, Wang S, Xiao Y, Xiang X, Deng M, Luo W, Chen X, Wang X. Fatty acids and lipid mediators in inflammatory bowel disease: from mechanism to treatment. Front Immunol 2023; 14:1286667. [PMID: 37868958 PMCID: PMC10585177 DOI: 10.3389/fimmu.2023.1286667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 09/25/2023] [Indexed: 10/24/2023] Open
Abstract
Inflammatory Bowel Disease (IBD) is a chronic, relapsing inflammatory disorder of the gastrointestinal tract. Though the pathogenesis of IBD remains unclear, diet is increasingly recognized as a pivotal factor influencing its onset and progression. Fatty acids, essential components of dietary lipids, play diverse roles in IBD, ranging from anti-inflammatory and immune-regulatory functions to gut-microbiota modulation and barrier maintenance. Short-chain fatty acids (SCFAs), products of indigestible dietary fiber fermentation by gut microbiota, have strong anti-inflammatory properties and are seen as key protective factors against IBD. Among long-chain fatty acids, saturated fatty acids, trans fatty acids, and ω-6 polyunsaturated fatty acids exhibit pro-inflammatory effects, while oleic acid and ω-3 polyunsaturated fatty acids display anti-inflammatory actions. Lipid mediators derived from polyunsaturated fatty acids serve as bioactive molecules, influencing immune cell functions and offering both pro-inflammatory and anti-inflammatory benefits. Recent research has also highlighted the potential of medium- and very long-chain fatty acids in modulating inflammation, mucosal barriers, and gut microbiota in IBD. Given these insights, dietary intervention and supplementation with short-chain fatty acids are emerging as potential therapeutic strategies for IBD. This review elucidates the impact of various fatty acids and lipid mediators on IBD and delves into potential therapeutic avenues stemming from these compounds.
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Affiliation(s)
- Dong Yan
- Department of Gastroenterology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Shuyu Ye
- Department of Gastroenterology, The Third Xiangya Hospital of Central South University, Changsha, China
- Hunan Key Laboratory of Non-Resolving Inflammation and Cancer, Cancer Research Institute, Central South University, Changsha, China
| | - Yue He
- Department of Gastroenterology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Sidan Wang
- Department of Gastroenterology, The Third Xiangya Hospital of Central South University, Changsha, China
- Hunan Key Laboratory of Non-Resolving Inflammation and Cancer, Cancer Research Institute, Central South University, Changsha, China
| | - Yi Xiao
- Department of Gastroenterology, The Third Xiangya Hospital of Central South University, Changsha, China
- Hunan Key Laboratory of Non-Resolving Inflammation and Cancer, Cancer Research Institute, Central South University, Changsha, China
| | - Xin Xiang
- Department of Gastroenterology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Minzi Deng
- Department of Gastroenterology, The Third Xiangya Hospital of Central South University, Changsha, China
- Hunan Key Laboratory of Non-Resolving Inflammation and Cancer, Cancer Research Institute, Central South University, Changsha, China
| | - Weiwei Luo
- Department of Gastroenterology, The Third Xiangya Hospital of Central South University, Changsha, China
- Hunan Key Laboratory of Non-Resolving Inflammation and Cancer, Cancer Research Institute, Central South University, Changsha, China
| | - Xuejie Chen
- Department of Gastroenterology, The Third Xiangya Hospital of Central South University, Changsha, China
- Hunan Key Laboratory of Non-Resolving Inflammation and Cancer, Cancer Research Institute, Central South University, Changsha, China
| | - Xiaoyan Wang
- Department of Gastroenterology, The Third Xiangya Hospital of Central South University, Changsha, China
- Hunan Key Laboratory of Non-Resolving Inflammation and Cancer, Cancer Research Institute, Central South University, Changsha, China
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Ben-Mustapha Y, Ben-Fradj MK, Hadj-Taieb S, Serghini M, Ben Ahmed M, Boubaker J, Feki M. Altered mucosal and plasma polyunsaturated fatty acids, oxylipins, and endocannabinoids profiles in Crohn's disease. Prostaglandins Other Lipid Mediat 2023; 168:106741. [PMID: 37149256 DOI: 10.1016/j.prostaglandins.2023.106741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 04/13/2023] [Accepted: 05/02/2023] [Indexed: 05/08/2023]
Abstract
Selected mucosal and plasma polyunsaturated fatty acids (PUFAs) and related oxylipins and endocannabinoids were determined in 28 Crohn's disease (CD) patients and 39 controls. Fasting blood and colonic biopsies were collected in all participants, during a disease flare for the patients. Thirty-two lipid mediators including PUFAs, oxylipins, and endocannabinoids were assessed by LC-MS/MS. The pattern of lipid mediators in CD patients is characterized by an increase in arachidonic acid-derived oxylipins and endocannabinoids and a decrease in n-3 PUFAs and related endocannabinoids. A model combining increased 6-epi-lipoxin A4 and 2-arachidonyl glycerol with decreased docoasapentaenoic acid in plasma fairly discriminates patients from controls and may represent a lipidomic signature for CD flare. The study findings suggest that lipid mediators are involved in CD pathophysiology and may serve as biomarkers for disease flare. Further research is required to confirm the role of these bioactive lipids and test their therapeutic potential in CD.
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Affiliation(s)
- Yamina Ben-Mustapha
- University of Tunis El Manar, Faculty of Medicine of Tunis, 1007 Tunis, Tunisia; University of Tunis El Manar, Faculty of Sciences of Tunis, 2092 Tunis, Tunisia; Rabta Hospital, Laboratory of Biochemistry & LR99ES11, 1007 Tunis, Tunisia
| | - Mohamed Kacem Ben-Fradj
- University of Tunis El Manar, Faculty of Medicine of Tunis, 1007 Tunis, Tunisia; Rabta Hospital, Laboratory of Biochemistry & LR99ES11, 1007 Tunis, Tunisia
| | - Sameh Hadj-Taieb
- University of Tunis El Manar, Faculty of Medicine of Tunis, 1007 Tunis, Tunisia; Rabta Hospital, Laboratory of Biochemistry & LR99ES11, 1007 Tunis, Tunisia
| | - Meriem Serghini
- University of Tunis El Manar, Faculty of Medicine of Tunis, 1007 Tunis, Tunisia; Rabta Hospital, Service of Gastroenterology A, 1007 Tunis, Tunisia
| | - Melika Ben Ahmed
- University of Tunis El Manar, Faculty of Medicine of Tunis, 1007 Tunis, Tunisia; Institute Pasteur of Tunis, Laboratory of Clinical Immunology, 1002, Tunis, Tunisia
| | - Jalel Boubaker
- University of Tunis El Manar, Faculty of Medicine of Tunis, 1007 Tunis, Tunisia; Rabta Hospital, Service of Gastroenterology A, 1007 Tunis, Tunisia
| | - Moncef Feki
- University of Tunis El Manar, Faculty of Medicine of Tunis, 1007 Tunis, Tunisia; Rabta Hospital, Laboratory of Biochemistry & LR99ES11, 1007 Tunis, Tunisia.
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Kayama H, Takeda K. Emerging roles of host and microbial bioactive lipids in inflammatory bowel diseases. Eur J Immunol 2023; 53:e2249866. [PMID: 37191284 DOI: 10.1002/eji.202249866] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 04/11/2023] [Accepted: 05/15/2023] [Indexed: 05/17/2023]
Abstract
The intestinal tract harbors diverse microorganisms, host- and microbiota-derived metabolites, and potentially harmful dietary antigens. The epithelial barrier separates the mucosa, where diverse immune cells exist, from the lumen to avoid excessive immune reactions against microbes and dietary antigens. Inflammatory bowel disease (IBD), such as ulcerative colitis and Crohn's disease, is characterized by a chronic and relapsing disorder of the gastrointestinal tract. Although the precise etiology of IBD is still largely unknown, accumulating evidence suggests that IBD is multifactorial, involving host genetics and microbiota. Alterations in the metabolomic profiles and microbial community are features of IBD. Advances in mass spectrometry-based lipidomic technologies enable the identification of changes in the composition of intestinal lipid species in IBD. Because lipids have a wide range of functions, including signal transduction and cell membrane formation, the dysregulation of lipid metabolism drastically affects the physiology of the host and microorganisms. Therefore, a better understanding of the intimate interactions of intestinal lipids with host cells that are implicated in the pathogenesis of intestinal inflammation might aid in the identification of novel biomarkers and therapeutic targets for IBD. This review summarizes the current knowledge on the mechanisms by which host and microbial lipids control and maintain intestinal health and diseases.
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Affiliation(s)
- Hisako Kayama
- Laboratory of Immune Regulation, Department of Microbiology and Immunology, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
- WPI, Osaka University, Suita, Osaka, Japan
- Institute for Advanced Co-Creation Studies, Osaka University, Suita, Osaka, Japan
| | - Kiyoshi Takeda
- Laboratory of Immune Regulation, Department of Microbiology and Immunology, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
- WPI, Osaka University, Suita, Osaka, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Japan
- Center for Infection Disease Education and Research, Osaka University, Suita, Japan
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Mantel M, Derkinderen P, Bach-Ngohou K, Neunlist M, Rolli-Derkinderen M. Crosstalk between omega-6 oxylipins and the enteric nervous system: Implications for gut disorders? Front Med (Lausanne) 2023; 10:1083351. [PMID: 37056732 PMCID: PMC10086145 DOI: 10.3389/fmed.2023.1083351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 03/03/2023] [Indexed: 03/30/2023] Open
Abstract
The enteric nervous system (ENS) continues to dazzle scientists with its ability to integrate signals, from the outside as well as from the host, to accurately regulate digestive functions. Composed of neurons and enteric glial cells, the ENS interplays with numerous neighboring cells through the reception and/or the production of several types of mediators. In particular, ENS can produce and release n-6 oxylipins. These lipid mediators, derived from arachidonic acid, play a major role in inflammatory and allergic processes, but can also regulate immune and nervous system functions. As such, the study of these n-6 oxylipins on the digestive functions, their cross talk with the ENS and their implication in pathophysiological processes is in full expansion and will be discussed in this review.
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Affiliation(s)
- Marine Mantel
- Nantes Université, Inserm, The Enteric Nervous System in Gut and Brain Disorders, Nantes, France
| | - Pascal Derkinderen
- CHU Nantes, Inserm, Nantes Université, The Enteric Nervous System in Gut and Brain Disorders, Nantes, France
| | - Kalyane Bach-Ngohou
- CHU Nantes, Inserm, Nantes Université, The Enteric Nervous System in Gut and Brain Disorders, Nantes, France
| | - Michel Neunlist
- Nantes Université, Inserm, The Enteric Nervous System in Gut and Brain Disorders, Nantes, France
| | - Malvyne Rolli-Derkinderen
- Nantes Université, Inserm, The Enteric Nervous System in Gut and Brain Disorders, Nantes, France
- *Correspondence: Malvyne Rolli-Derkinderen,
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Lo Conte M, Antonini Cencicchio M, Ulaszewska M, Nobili A, Cosorich I, Ferrarese R, Massimino L, Andolfo A, Ungaro F, Mancini N, Falcone M. A diet enriched in omega-3 PUFA and inulin prevents type 1 diabetes by restoring gut barrier integrity and immune homeostasis in NOD mice. Front Immunol 2023; 13:1089987. [PMID: 36713378 PMCID: PMC9880528 DOI: 10.3389/fimmu.2022.1089987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 12/23/2022] [Indexed: 01/15/2023] Open
Abstract
Introduction The integrity of the gut barrier (GB) is fundamental to regulate the crosstalk between the microbiota and the immune system and to prevent inflammation and autoimmunity at the intestinal level but also in organs distal from the gut such as the pancreatic islets. In support to this idea, we recently demonstrated that breakage of GB integrity leads to activation of islet-reactive T cells and triggers autoimmune Type 1 Diabetes (T1D). In T1D patients as in the NOD mice, the spontaneous model of autoimmune diabetes, there are alterations of the GB that specifically affect structure and composition of the mucus layer; however, it is yet to be determined whether a causal link between breakage of the GB integrity and occurrence of autoimmune T1D exists. Methods Here we restored GB integrity in the NOD mice through administration of an anti-inflammatory diet (AID- enriched in soluble fiber inulin and omega 3-PUFA) and tested the effect on T1D pathogenesis. Results We found that the AID prevented T1D in NOD mice by restoring GB integrity with increased mucus layer thickness and higher mRNA transcripts of structural (Muc2) and immunoregulatory mucins (Muc1 and Muc3) as well as of tight junction proteins (claudin1). Restoration of GB integrity was linked to reduction of intestinal inflammation (i.e., reduced expression of IL-1β, IL-23 and IL-17 transcripts) and expansion of regulatory T cells (FoxP3+ Treg cells and IL-10+ Tr1 cells) at the expenses of effector Th1/Th17 cells in the intestine, pancreatic lymph nodes (PLN) and intra-islet lymphocytes (IIL) of AID-fed NOD mice. Importantly, the restoration of GB integrity and immune homeostasis were associated with enhanced concentrations of anti-inflammatory metabolites of the ω3/ω6 polyunsaturated fatty acids (PUFA) and arachidonic pathways and modifications of the microbiome profile with increased relative abundance of mucus-modulating bacterial species such as Akkermansia muciniphila and Akkermansia glycaniphila. Discussion Our data provide evidence that the restoration of GB integrity and intestinal immune homeostasis through administration of a tolerogenic AID that changed the gut microbial and metabolic profiles prevents autoimmune T1D in preclinical models.
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Affiliation(s)
- Marta Lo Conte
- Autoimmune Pathogenesis Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy,Università Vita-Salute San Raffaele, Milan, Italy
| | - Martina Antonini Cencicchio
- Autoimmune Pathogenesis Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy,Università Vita-Salute San Raffaele, Milan, Italy
| | - Marynka Ulaszewska
- Proteomics and Metabolomics Facility (ProMeFa), IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Angelica Nobili
- Autoimmune Pathogenesis Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Ilaria Cosorich
- Autoimmune Pathogenesis Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Roberto Ferrarese
- Laboratory of Medical Microbiology and Virology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Luca Massimino
- Experimental Gastroenterology Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Annapaola Andolfo
- Proteomics and Metabolomics Facility (ProMeFa), IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Federica Ungaro
- Experimental Gastroenterology Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Nicasio Mancini
- Laboratory of Medical Microbiology and Virology, IRCCS San Raffaele Scientific Institute, Milan, Italy,Laboratory of Medical Microbiology and Virology, Università “Vita-Salute” San Raffaele, Milan, Italy
| | - Marika Falcone
- Autoimmune Pathogenesis Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy,*Correspondence: Marika Falcone,
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Panufnik P, Więcek M, Kaniewska M, Lewandowski K, Szwarc P, Rydzewska G. Selected Aspects of Nutrition in the Prevention and Treatment of Inflammatory Bowel Disease. Nutrients 2022; 14:nu14234965. [PMID: 36500995 PMCID: PMC9737796 DOI: 10.3390/nu14234965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/17/2022] [Accepted: 11/18/2022] [Indexed: 11/24/2022] Open
Abstract
Inflammatory bowel disease has become a global health problem at the turn of the 21st century. The pathogenesis of this disorder has not been fully explained. In addition to non-modifiable genetic factors, a number of modifiable factors such as diet or gut microbiota have been identified. In this paper, the authors focus on the role of nutrition in the prevention of inflammatory bowel disease as well as on the available options to induce disease remission by means of dietary interventions such as exclusive and partial enteral nutrition in Crohn's disease, the efficacy of which is reported to be comparable to that of steroid therapy. Diet is also important in patients with inflammatory bowel disease in the remission stage, during which some patients report irritable bowel disease-like symptoms. In these patients, the effectiveness of diets restricting the intake of oligo-, di-, monosaccharides, and polyols is reported.
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Affiliation(s)
- Paulina Panufnik
- Clinical Department of Internal Medicine and Gastroenterology with Inflammatory Bowel Disease Subunit, Central Clinical Hospital of Ministry of the Interior and Administration in Warsaw, 02-507 Warszawa, Poland
- Correspondence: (P.P.); (G.R.)
| | - Martyna Więcek
- Clinical Department of Internal Medicine and Gastroenterology with Inflammatory Bowel Disease Subunit, Central Clinical Hospital of Ministry of the Interior and Administration in Warsaw, 02-507 Warszawa, Poland
| | - Magdalena Kaniewska
- Clinical Department of Internal Medicine and Gastroenterology with Inflammatory Bowel Disease Subunit, Central Clinical Hospital of Ministry of the Interior and Administration in Warsaw, 02-507 Warszawa, Poland
| | - Konrad Lewandowski
- Clinical Department of Internal Medicine and Gastroenterology with Inflammatory Bowel Disease Subunit, Central Clinical Hospital of Ministry of the Interior and Administration in Warsaw, 02-507 Warszawa, Poland
| | - Paulina Szwarc
- Clinical Department of Internal Medicine and Gastroenterology with Inflammatory Bowel Disease Subunit, Central Clinical Hospital of Ministry of the Interior and Administration in Warsaw, 02-507 Warszawa, Poland
| | - Grażyna Rydzewska
- Clinical Department of Internal Medicine and Gastroenterology with Inflammatory Bowel Disease Subunit, Central Clinical Hospital of Ministry of the Interior and Administration in Warsaw, 02-507 Warszawa, Poland
- Collegium Medicum, Jan Kochanowski University, 25-317 Kielce, Poland
- Correspondence: (P.P.); (G.R.)
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8
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Rishworth A, Cao T, Niraula A, Wilson K. Health Care Use and Barriers to Care for Chronic Inflammatory Diseases (CID) among First and Second Generation South Asian Immigrant Children and Parents in Ontario Canada. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:14608. [PMID: 36361486 PMCID: PMC9655293 DOI: 10.3390/ijerph192114608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/24/2022] [Accepted: 10/26/2022] [Indexed: 06/16/2023]
Abstract
Although immigrants are disproportionately impacted by growing chronic inflammatory disease (CIDs) rates, yet suffer barriers to access health care, little attention has been given to their primary healthcare or specialist healthcare access as it relates to complex, chronic diseases in Canada, a country with universal health care. This study aims to investigate CID health care use and barriers to care among first- and second-generation immigrant South Asian children and parents in the Greater Toronto Area, Ontario. Drawing on analysis of 24 in depth interviews with children and parents (14 children, 10 parents), the results reveal that although CIDs disproportionately affects South Asian immigrants, they encounter health system, geographic, interpersonal, and knowledge barriers to access requisite care. These barriers exist despite participants having a GP, and are compounded further by limited familial systems, culturally insensitive care, and structural inequities that in some instances make parents choose between health access or other basic needs. Although all participants recognized the importance of specialized care, only 11 participants regularly accessed specialized care, creating new schisms in CID management. The findings suggest that a multisectoral approach that address individual and structural level socio-structural drivers of health inequities are needed to create more equitable healthcare access.
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Affiliation(s)
- Andrea Rishworth
- Department of Geography, Geomatics and Environment, Faculty Geography, University of Toronto Mississauga, Mississauga, ON L5L 1C6, Canada
| | - Tiffany Cao
- Department of Geography, Geomatics and Environment, Faculty Geography, University of Toronto Mississauga, Mississauga, ON L5L 1C6, Canada
| | - Ashika Niraula
- CERC in Migration and Integration, Toronto Metropolitan University, Toronto, ON M5B 2K3, Canada
| | - Kathi Wilson
- Department of Geography, Geomatics and Environment, Faculty Geography, University of Toronto Mississauga, Mississauga, ON L5L 1C6, Canada
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Nigam S, Ranjan R, Sinha N, Ateeq B. Nuclear magnetic resonance spectroscopy reveals dysregulation of monounsaturated fatty acid metabolism upon SPINK1 attenuation in colorectal cancer. NMR IN BIOMEDICINE 2022; 35:e4705. [PMID: 35102613 DOI: 10.1002/nbm.4705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 01/21/2022] [Accepted: 01/24/2022] [Indexed: 06/14/2023]
Abstract
Metabolic reprogramming, a key hallmark of cancer, plays a pivotal role in fulfilling the accelerated biological demands of tumor cells. Such metabolic changes trigger the production of several proinflammatory factors, thereby inciting cancer development and its progression. Serine protease inhibitor Kazal Type 1 (SPINK1), well known for its oncogenic role and its upregulation via acute-phase reactions, is highly expressed in multiple cancers including colorectal cancer (CRC). Here, we show accumulation of lipid droplets in CRC cells stained with Oil Red O upon SPINK1 silencing. Furthermore, NMR spectroscopy analysis revealed an accretion of monounsaturated fatty acids (MUFAs) and phosphatidylcholine in these CRC cells, while the levels of polyunsaturated fatty acids remained unaltered. This alteration indicates the presence of MUFAs with the triglycerides in the lipid droplets as observed in SPINK1-silenced CRC cells. Considering the role of MUFAs in the anti-inflammatory response, our data hint that suppression of SPINK1 in CRC leads to activation of an anti-inflammatory signaling milieu. Conclusively, our study uncovers a connection between lipid metabolism and SPINK1-mediated CRC progression, hence paving the way for further exploration and better prognosis of SPINK1-positive CRC patients.
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Affiliation(s)
- Shivansh Nigam
- Molecular Oncology Laboratory, Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur, India
| | - Renuka Ranjan
- Department of Advanced Spectroscopy and Imaging, Centre of Biomedical Research, Lucknow, India
| | - Neeraj Sinha
- Department of Advanced Spectroscopy and Imaging, Centre of Biomedical Research, Lucknow, India
| | - Bushra Ateeq
- Molecular Oncology Laboratory, Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur, India
- The Mehta Family Center for Engineering in Medicine, Indian Institute of Technology Kanpur, Kanpur, India
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Kikut J, Drozd A, Mokrzycka M, Grzybowska-Chlebowczyk U, Ziętek M, Szczuko M. Are EPA and DHA Derivatives Involved in IBD Remission? J Clin Med 2022; 11:jcm11092388. [PMID: 35566515 PMCID: PMC9104684 DOI: 10.3390/jcm11092388] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 04/10/2022] [Accepted: 04/22/2022] [Indexed: 12/10/2022] Open
Abstract
Recently, an increase in the incidence of inflammatory bowel disease (IBD) has been observed among children and adolescents. Although the pathogenesis of IBD is not fully elucidated currently, actual research focuses on the occurrence of imbalance between pro- and anti-inflammatory molecules and future identification of the role of cytokines in IBD therapy. The purpose of this study was to compare the concentrations of eicosapentaenoic and docosahexaenoic acid derivatives during both phases of Crohn’s disease (CD) and ulcerative colitis (UC). The study included 64 adolescent patients with CD (n = 34) and UC (n = 30) aged 13.76 ± 2.69 and 14.15 ± 3.31, respectively. Biochemical analysis was performed on a liquid chromatography apparatus. A statistically significant lower concentration of resolvin E1 (RvE1) was observed in the CD group relative to UC. In the active phase of CD, a statistically significantly higher concentration of protectin DX (PDX) was observed relative to remission CD. Comparing the active phase of both diseases, a statistically significantly higher concentration of resolvin E1 (RvE1) was observed in UC relative to CD. Comparing the remission phase of both diseases showed statistically significantly higher PDX levels in CD relative to UC. Our study adds to the knowledge on the involvement of anti-inflammatory lipid mediators in both IBD entities. In conclusion, it seems that the marker differentiating both disease entities in the active phase may be RvE1, while in the remission phase, PDX. In CD remission, the greatest involvement was observed towards PDX, whereas in UC, MaR1, RvE1 and 18RS-HEPE seem to be the most involved in remission.
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Affiliation(s)
- Justyna Kikut
- Department of Human Nutrition and Metabolomics, Pomeranian Medical University in Szczecin, 71-460 Szczecin, Poland; (J.K.); (A.D.)
- Department of Pediatrics, Hemato-Oncology and Pediatric Gastroenterology, Independent Public Clinical Hospital No.1, Pomeranian Medical University in Szczecin, 71-252 Szczecin, Poland;
| | - Arleta Drozd
- Department of Human Nutrition and Metabolomics, Pomeranian Medical University in Szczecin, 71-460 Szczecin, Poland; (J.K.); (A.D.)
| | - Małgorzata Mokrzycka
- Department of Pediatrics, Hemato-Oncology and Pediatric Gastroenterology, Independent Public Clinical Hospital No.1, Pomeranian Medical University in Szczecin, 71-252 Szczecin, Poland;
| | - Urszula Grzybowska-Chlebowczyk
- Department of Pediatrics, Faculty of Medical Sciences in Katowice, Medical University of Silesia in Katowice, 40-752 Katowice, Poland;
| | - Maciej Ziętek
- Department of Perinatology, Obstetrics and Gynecology, Pomeranian Medical University in Szczecin, 72-010 Police, Poland;
| | - Małgorzata Szczuko
- Department of Human Nutrition and Metabolomics, Pomeranian Medical University in Szczecin, 71-460 Szczecin, Poland; (J.K.); (A.D.)
- Correspondence:
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11
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Honig G, Larkin PB, Heller C, Hurtado-Lorenzo A. Research-Based Product Innovation to Address Critical Unmet Needs of Patients with Inflammatory Bowel Diseases. Inflamm Bowel Dis 2021; 27:S1-S16. [PMID: 34791292 PMCID: PMC8922161 DOI: 10.1093/ibd/izab230] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Indexed: 12/09/2022]
Abstract
Despite progress in recent decades, patients with inflammatory bowel diseases face many critical unmet needs, demonstrating the limitations of available treatment options. Addressing these unmet needs will require interventions targeting multiple aspects of inflammatory bowel disease pathology, including disease drivers that are not targeted by available therapies. The vast majority of late-stage investigational therapies also focus primarily on a narrow range of fundamental mechanisms. Thus, there is a pressing need to advance to clinical stage differentiated investigational therapies directly targeting a broader range of key mechanistic drivers of inflammatory bowel diseases. In addition, innovations are critically needed to enable treatments to be tailored to the specific underlying abnormal biological pathways of patients; interventions with improved safety profiles; biomarkers to develop prognostic, predictive, and monitoring tests; novel devices for nonpharmacological approaches such as minimally invasive monitoring; and digital health technologies. To address these needs, the Crohn's & Colitis Foundation launched IBD Ventures, a venture philanthropy-funding mechanism, and IBD Innovate®, an innovative, product-focused scientific conference. This special IBD Innovate® supplement is a collection of articles reflecting the diverse and exciting research and development that is currently ongoing in the inflammatory bowel disease field to deliver innovative and differentiated products addressing critical unmet needs of patients. Here, we highlight the pipeline of new product opportunities currently advancing at the preclinical and early clinical development stages. We categorize and describe novel and differentiated potential product opportunities based on their potential to address the following critical unmet patient needs: (1) biomarkers for prognosis of disease course and prediction/monitoring of treatment response; (2) restoration of eubiosis; (3) restoration of barrier function and mucosal healing; (4) more effective and safer anti-inflammatories; (5) neuromodulatory and behavioral therapies; (6) management of disease complications; and (7) targeted drug delivery.
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12
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Etiology of Colitis-Complex Diarrhea in Growing Pigs: A Review. Animals (Basel) 2021; 11:ani11072151. [PMID: 34359279 PMCID: PMC8300613 DOI: 10.3390/ani11072151] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/13/2021] [Accepted: 07/14/2021] [Indexed: 12/12/2022] Open
Abstract
Simple Summary Diarrhea in growing pigs is a challenge for the pig industry since it is associated with reduced animal welfare, retarded growth, increased feed conversion ratio, and is often treated with antibiotics. One of the major causes of diarrhea in the growing period is large intestinal inflammation, often referred to as colitis. The exact causes of colitis-complex diarrhea are still to be understood, but dietary factors and/or pathogens have been recognized as the major factors in developing colitis-complex diarrhea. In this review, a thorough picture of pathogens, dietary factors, and a number of possible biomarkers related to colitis-complex diarrhea is presented. Abstract Colitis-complex diarrhea (CCD) in pigs can be defined as a type of diarrhea, which is associated with colonic inflammation and disrupted colonic gut barrier functionality in growing pigs (4–16 weeks post-weaning). It is a challenge for the pig industry as it is associated with the high use of antibiotics, reduced animal welfare, and depressed growth rate. The exact etiology of CCD is still unclear; however, pathogens including Brachyspira (B.) hyodysenteriae, B. pilosicoli, and swine whipworms such as Trichuris (T.) suis have been involved in specific colitis (SC). In the absence of specific pathogens, dietary factors, such as high levels of protein, pelleted feedstuffs, and lack of sufficient antioxidants, can result in non-specific colitis (NSC). On the other hand, supplement of polyunsaturated fatty acids (PUFA) and polyphenols, sufficient supply of essential amino acids (e.g., threonine, cysteine, and proline), short-chain fatty acids (SCFA; especially butyrate), and resistant starch have shown to confer preventing/ameliorating effects on CCD. Different putative biomarkers associated with CCD have been presented. It is anticipated that a comprehensive picture of the possible causes of CCD and potential dietary interventions could cast light on the direction of future studies aimed at developing preventive and curative strategies against CCD in growing pigs.
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13
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The Functional Properties of Lactobacillus casei HY2782 Are Affected by the Fermentation Time. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11062481] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Maintaining probiotic effectiveness represents the most important task for the development of functional foods. Gastrointestinal stability and intestinal adhesion properties comprise one criterion for probiotic selection. Here, we investigated the benefits of milk fermented with Lactobacillus casei HY2782 at different fermentation times. The probiotic strain used was L. casei HY2782 and the reference strain was L. casei ATCC393 for comparisons. The samples were fermented for 7 days at 30 °C. We determined the pH, CFU/mL, survival rate during simulated gastrointestinal digestion, adhesion ability to HT-29 cells, and gene expression of tight-junction proteins known to regulate intestinal permeability in Caco-2 cells. L. casei HY2782 exhibited significantly higher survival rates in simulated gastrointestinal digestion during long-term fermentation than L. casei ATCC393. The adhesion ability to HT-29 cells was significantly increased with L. casei HY2782 (3.3% to 8.7%) after 7 days of fermentation; however, only a slight increase was observed for L. casei ATCC393 (3.1% to 4.7%). In addition, L. casei HY2782 can significantly increase the expression of genes encoding tight-junction proteins during long-term fermentation of milk. In conclusion, we confirmed that long-term fermentation could be a novel manufacturing process for fermented milk containing L. casei HY2782 and showed the beneficial effects.
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14
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Specialized Pro-Resolving Mediators and the Lymphatic System. Int J Mol Sci 2021; 22:ijms22052750. [PMID: 33803130 PMCID: PMC7963193 DOI: 10.3390/ijms22052750] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 02/26/2021] [Accepted: 03/04/2021] [Indexed: 12/21/2022] Open
Abstract
Diminished lymphatic function and abnormal morphology are common in chronic inflammatory diseases. Recent studies are investigating whether it is possible to target chronic inflammation by promoting resolution of inflammation, in order to enhance lymphatic function and attenuate disease. Resolution of inflammation is an active process regulated by bioactive lipids known as specialized pro-resolving mediators (SPMs). SPMs can modulate leukocyte migration and function, alter cytokine/chemokine release, modify autophagy, among other immune-related activities. Here, we summarize the role of the lymphatics in resolution of inflammation and lymphatic impairment in chronic inflammatory diseases. Furthermore, we discuss the current literature describing the connection between SPMs and the lymphatics, and the possibility of targeting the lymphatics with innovative SPM therapy to promote resolution of inflammation and mitigate disease.
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15
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Ileum Gene Expression in Response to Acute Systemic Inflammation in Mice Chronically Fed Ethanol: Beneficial Effects of Elevated Tissue n-3 PUFAs. Int J Mol Sci 2021; 22:ijms22041582. [PMID: 33557303 PMCID: PMC7914826 DOI: 10.3390/ijms22041582] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/31/2021] [Accepted: 02/01/2021] [Indexed: 02/07/2023] Open
Abstract
Chronic alcohol consumption leads to disturbances in intestinal function which can be exacerbated by inflammation and modulated by different factors, e.g., polyunsaturated fatty acids (PUFAs). The mechanisms underlying these alterations are not well understood. In this study, RNA-seq analysis was performed on ileum tissue from WT and fat-1 transgenic mice (which have elevated endogenous n-3 PUFAs). Mice were chronically fed ethanol (EtOH) and challenged with a single lipopolysaccharide (LPS) dose to induce acute systemic inflammation. Both WT and fat-1 mice exhibited significant ileum transcriptome changes following EtOH + LPS treatment. Compared to WT, fat-1 mice had upregulated expression of genes associated with cell cycle and xenobiotic metabolism, while the expression of pro-inflammatory cytokines and pro-fibrotic genes was decreased. In response to EtOH + LPS, fat-1 mice had an increased expression of genes related to antibacterial B cells (APRIL and IgA), as well as an elevation in markers of pro-restorative macrophages and γδ T cells that was not observed in WT mice. Our study significantly expands the knowledge of regulatory mechanisms underlying intestinal alterations due to EtOH consumption and inflammation and identifies the beneficial transcriptional effects of n-3 PUFAs, which may serve as a viable nutritional intervention for intestinal damage resulting from excessive alcohol consumption.
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16
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Basson AR, Chen C, Sagl F, Trotter A, Bederman I, Gomez-Nguyen A, Sundrud MS, Ilic S, Cominelli F, Rodriguez-Palacios A. Regulation of Intestinal Inflammation by Dietary Fats. Front Immunol 2021; 11:604989. [PMID: 33603741 PMCID: PMC7884479 DOI: 10.3389/fimmu.2020.604989] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 12/11/2020] [Indexed: 12/12/2022] Open
Abstract
With the epidemic of human obesity, dietary fats have increasingly become a focal point of biomedical research. Epidemiological studies indicate that high-fat diets (HFDs), especially those rich in long-chain saturated fatty acids (e.g., Western Diet, National Health Examination survey; NHANES 'What We Eat in America' report) have multi-organ pro-inflammatory effects. Experimental studies have confirmed some of these disease associations, and have begun to elaborate mechanisms of disease induction. However, many of the observed effects from epidemiological studies appear to be an over-simplification of the mechanistic complexity that depends on dynamic interactions between the host, the particular fatty acid, and the rather personalized genetics and variability of the gut microbiota. Of interest, experimental studies have shown that certain saturated fats (e.g., lauric and myristic fatty acid-rich coconut oil) could exert the opposite effect; that is, desirable anti-inflammatory and protective mechanisms promoting gut health by unanticipated pathways. Owing to the experimental advantages of laboratory animals for the study of mechanisms under well-controlled dietary settings, we focus this review on the current understanding of how dietary fatty acids impact intestinal biology. We center this discussion on studies from mice and rats, with validation in cell culture systems or human studies. We provide a scoping overview of the most studied diseases mechanisms associated with the induction or prevention of Inflammatory Bowel Disease in rodent models relevant to Crohn's Disease and Ulcerative Colitis after feeding either high-fat diet (HFD) or feed containing specific fatty acid or other target dietary molecule. Finally, we provide a general outlook on areas that have been largely or scarcely studied, and assess the effects of HFDs on acute and chronic forms of intestinal inflammation.
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Affiliation(s)
- Abigail R. Basson
- Division of Gastroenterology and Liver Diseases, School of Medicine, Case Western Reserve University School of Medicine, Cleveland, OH, United States
- Digestive Health Research Institute, School of Medicine, Case Western Reserve University, Cleveland, OH, United States
- Cleveland Digestive Diseases Research Core, School of Medicine, Case Western Reserve University, Cleveland, OH, United States
- Digestive Health Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, United States
| | - Christy Chen
- Digestive Health Research Institute, School of Medicine, Case Western Reserve University, Cleveland, OH, United States
| | - Filip Sagl
- Digestive Health Research Institute, School of Medicine, Case Western Reserve University, Cleveland, OH, United States
| | - Ashley Trotter
- Division of Gastroenterology and Liver Diseases, School of Medicine, Case Western Reserve University School of Medicine, Cleveland, OH, United States
- Digestive Health Research Institute, School of Medicine, Case Western Reserve University, Cleveland, OH, United States
- Department of Hospital Medicine, Pritzker School of Medicine, NorthShore University Health System, Chicago, IL, United States
| | - Ilya Bederman
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH, United States
| | - Adrian Gomez-Nguyen
- Division of Gastroenterology and Liver Diseases, School of Medicine, Case Western Reserve University School of Medicine, Cleveland, OH, United States
- Digestive Health Research Institute, School of Medicine, Case Western Reserve University, Cleveland, OH, United States
- Cleveland Digestive Diseases Research Core, School of Medicine, Case Western Reserve University, Cleveland, OH, United States
| | - Mark S. Sundrud
- Department of Immunology and Microbiology, The Scripps Research Institute, Jupiter, FL, United States
| | - Sanja Ilic
- Department of Human Sciences, Human Nutrition, College of Education and Human Ecology, The Ohio State University, Columbus, OH, United States
| | - Fabio Cominelli
- Division of Gastroenterology and Liver Diseases, School of Medicine, Case Western Reserve University School of Medicine, Cleveland, OH, United States
- Digestive Health Research Institute, School of Medicine, Case Western Reserve University, Cleveland, OH, United States
- Cleveland Digestive Diseases Research Core, School of Medicine, Case Western Reserve University, Cleveland, OH, United States
- Digestive Health Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, United States
| | - Alex Rodriguez-Palacios
- Division of Gastroenterology and Liver Diseases, School of Medicine, Case Western Reserve University School of Medicine, Cleveland, OH, United States
- Digestive Health Research Institute, School of Medicine, Case Western Reserve University, Cleveland, OH, United States
- Cleveland Digestive Diseases Research Core, School of Medicine, Case Western Reserve University, Cleveland, OH, United States
- Digestive Health Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, United States
- University Hospitals Research and Education Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, United States
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17
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Gu BH, Kim M, Yun CH. Regulation of Gastrointestinal Immunity by Metabolites. Nutrients 2021; 13:nu13010167. [PMID: 33430497 PMCID: PMC7826526 DOI: 10.3390/nu13010167] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/01/2021] [Accepted: 01/04/2021] [Indexed: 12/11/2022] Open
Abstract
The gastrointestinal tract contains multiple types of immune cells that maintain the balance between tolerance and activation at the first line of host defense facing non-self antigens, including dietary antigens, commensal bacteria, and sometimes unexpected pathogens. The maintenance of homeostasis at the gastrointestinal tract requires stringent regulation of immune responses against various environmental conditions. Dietary components can be converted into gut metabolites with unique functional activities through host as well as microbial enzymatic activities. Accumulating evidence demonstrates that gastrointestinal metabolites have significant impacts on the regulation of intestinal immunity and are further integrated into the immune response of distal mucosal tissue. Metabolites, especially those derived from the microbiota, regulate immune cell functions in various ways, including the recognition and activation of cell surface receptors, the control of gene expression by epigenetic regulation, and the integration of cellular metabolism. These mucosal immune regulations are key to understanding the mechanisms underlying the development of gastrointestinal disorders. Here, we review recent advancements in our understanding of the role of gut metabolites in the regulation of gastrointestinal immunity, highlighting the cellular and molecular regulatory mechanisms by macronutrient-derived metabolites.
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Affiliation(s)
- Bon-Hee Gu
- Life and Industry Convergence Research Institute, Pusan National University, Miryang 50463, Korea;
| | - Myunghoo Kim
- Life and Industry Convergence Research Institute, Pusan National University, Miryang 50463, Korea;
- Department of Animal Science, College of Natural Resources & Life Science, Pusan National University, Miryang 50463, Korea
- Correspondence: (M.K.); (C.-H.Y.)
| | - Cheol-Heui Yun
- Department of Agricultural Biotechnology and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea
- Center for Food and Bioconvergence, Seoul National University, Seoul 08826, Korea
- Institute of Green-Bio Science and Technology, Seoul National University, Pyeongchang-gun, Gangwon-do 25354, Korea
- Correspondence: (M.K.); (C.-H.Y.)
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18
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Hardesty JE, Warner JB, Song YL, Rouchka EC, Chen CY, Kang JX, McClain CJ, Warner DR, Kirpich IA. Transcriptional signatures of the small intestinal mucosa in response to ethanol in transgenic mice rich in endogenous n3 fatty acids. Sci Rep 2020; 10:19930. [PMID: 33199802 PMCID: PMC7670449 DOI: 10.1038/s41598-020-76959-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 11/04/2020] [Indexed: 12/19/2022] Open
Abstract
The intestine interacts with many factors, including dietary components and ethanol (EtOH), which can impact intestinal health. Previous studies showed that different types of dietary fats can modulate EtOH-induced changes in the intestine; however, mechanisms underlying these effects are not completely understood. Here, we examined intestinal transcriptional responses to EtOH in WT and transgenic fat-1 mice (which endogenously convert n6 to n3 polyunsaturated fatty acids [PUFAs]) to identify novel genes and pathways involved in EtOH-associated gut pathology and discern the impact of n3 PUFA enrichment. WT and fat-1 mice were chronically fed EtOH, and ileum RNA-seq and bioinformatic analyses were performed. EtOH consumption led to a marked down-regulation of genes encoding digestive and xenobiotic-metabolizing enzymes, and transcription factors involved in developmental processes and tissue regeneration. Compared to WT, fat-1 mice exhibited a markedly plastic transcriptome response to EtOH. Cell death, inflammation, and tuft cell markers were downregulated in fat-1 mice in response to EtOH, while defense responses and PPAR signaling were upregulated. This transcriptional reprogramming may contribute to the beneficial effects of n3 PUFAs on EtOH-induced intestinal pathology. In summary, our study provides a reference dataset of the intestinal mucosa transcriptional responses to chronic EtOH exposure for future hypothesis-driven mechanistic studies.
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Affiliation(s)
- Josiah E Hardesty
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Louisville, 505 Hancock St., Louisville, KY, 40202, USA.,Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, USA
| | - Jeffrey B Warner
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Louisville, 505 Hancock St., Louisville, KY, 40202, USA.,Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, USA
| | - Ying L Song
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Louisville, 505 Hancock St., Louisville, KY, 40202, USA
| | - Eric C Rouchka
- Department of Computer Science and Engineering, Speed School of Engineering, University of Louisville, Louisville, KY, USA
| | - Chih-Yu Chen
- Laboratory for Lipid Medicine and Technology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Jing X Kang
- Laboratory for Lipid Medicine and Technology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Craig J McClain
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Louisville, 505 Hancock St., Louisville, KY, 40202, USA.,Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, USA.,University of Louisville Alcohol Center, University of Louisville School of Medicine, Louisville, KY, USA.,University of Louisville Hepatobiology and Toxicology Center, University of Louisville School of Medicine, Louisville, KY, USA.,Robley Rex Veterans Medical Center, Louisville, KY, USA
| | - Dennis R Warner
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Louisville, 505 Hancock St., Louisville, KY, 40202, USA
| | - Irina A Kirpich
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Louisville, 505 Hancock St., Louisville, KY, 40202, USA. .,Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, USA. .,University of Louisville Alcohol Center, University of Louisville School of Medicine, Louisville, KY, USA. .,University of Louisville Hepatobiology and Toxicology Center, University of Louisville School of Medicine, Louisville, KY, USA.
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19
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Liu R, Qiao S, Shen W, Liu Y, Lu Y, Liangyu H, Guo Z, Gong J, Shui G, Li Y, Zhu W. Disturbance of Fatty Acid Desaturation Mediated by FADS2 in Mesenteric Adipocytes Contributes to Chronic Inflammation of Crohn's Disease. J Crohns Colitis 2020; 14:1581-1599. [PMID: 32365195 DOI: 10.1093/ecco-jcc/jjaa086] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND AIMS The aim of this study was to investigate the metabolic profile of mesenteric adipocytes and the correlations between key metabolic changes and local inflammation in the context of Crohn's disease [CD]. METHODS Metabolic dysfunction was shown to be regulated by fatty acid desaturase-2 [FADS2], through metabolomics and functional analyses of mesenteric adipose tissue biopsies and primary mesenteric adipocytes isolated from surgical specimens collected from CD patients and control subjects. FADS2 was overexpressed in vitro and in vivo using a lentiviral vector and an adeno-associated virus [AAV], respectively. The interaction between mesenteric adipocytes and inflammation responses was evaluated by establishing a cell coculture system and a FADS2-AAV treated animal model; 3T3-L1 cells were used to elucidate the mechanism underlying FADS2 deregulation. RESULTS We observed significant changes in the levels of metabolites involved in the multi-step synthesis of long-chain polyunsaturated fatty acids [PUFAs]. Gas chromatography analysis revealed impaired desaturation fluxes towards the n-6 and n-3 pathways, which are associated with reduced FADS2 activity in human mesentery tissue. Decreased FADS2 expression at both mRNA and protein levels was confirmed in surgical specimens. The restoration of FADS2 expression, which allows for the endogenous conversion of n-3 fatty acids into proresolving lipid mediators, resulted in a significant reduction in pro-inflammatory macrophage infiltration and attenuated expression of inflammatory cytokines or adipokines. CONCLUSIONS These findings indicate that impaired fatty acid desaturation and lipid mediator imbalance within mesenteric adipose tissue contributes to chronic inflammation in CD. The therapeutic role of FADS2 may lead to improved CD treatment.
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Affiliation(s)
- Ruiqing Liu
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China.,Department of Gastrointestinal Surgery, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Shuaihua Qiao
- Department of Cardiology, Drum Tower Hospital, Nanjing University Medical School, Nanjing, China
| | - Weisong Shen
- Department of Gastroenterological Surgery, Peking University People's Hospital, Peking, China
| | - Yue Liu
- State Key Laboratory of Pharmaceutical Biotechnology and Nanjing Drum Tower Hospital, Model Animal Research Center, Nanjing University, Nanjing, China
| | - Yun Lu
- Department of Gastrointestinal Surgery, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Huang Liangyu
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Zhen Guo
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Jianfeng Gong
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Guanghou Shui
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, University of Chinese Academy of Sciences, Beijing, China
| | - Yi Li
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Weiming Zhu
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
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20
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Identifying environmental risk factors for inflammatory bowel diseases: a Mendelian randomization study. Sci Rep 2020; 10:19273. [PMID: 33159156 PMCID: PMC7648100 DOI: 10.1038/s41598-020-76361-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 10/23/2020] [Indexed: 12/19/2022] Open
Abstract
Several studies have examined environmental factors and inflammatory bowel diseases (IBD) using traditional approaches; however, provided results are still conflicting. Our aim was to determine whether lifestyle and nutrient exposures, related to IBD in observational meta-analyses, influence IBD risk using a Mendelian randomization (MR) approach. A two-sample MR approach was applied on summary-level genome-wide association results. Genetic variants strongly associated with measures of tobacco smoking, obesity and fat distribution, physical activity, and blood levels of vitamins and fatty acids were evaluated on genetic data from international IBD consortia including a total of 25,042 IBD cases (12,194 cases of Crohn’s disease (CD) and 12,366 cases of ulcerative colitis (UC)) and 34,915 controls. Our results indicated that, among lifestyle exposures, being a smoker was positively associated with CD (OR 1.13, P = 0.02), but it was not associated with UC risk (OR 0.99, P = 0.88). Body-mass index (BMI) and body fat percentage were positively associated with CD (OR 1.11, P = 0.02, per standard deviation (SD) of 4.6 kg/m2; and OR 1.50, P = 3 × 10–10, per SD of 6.6%; respectively); while for UC, BMI was inversely associated (OR 0.85, P = 5 × 10–5; per SD) and body fat percentage showed a OR of 1.11 (P = 0.11; per SD). Additionally, among nutrient exposures, omega-3 fatty acids levels were inversely associated with CD (OR 0.67, P = 2 × 10–6). Our MR results did not support a protective effect for being a smoker on UC risk; however, they are compatible with a risk effect for higher body fat proportion and a protective role for higher levels of omega-3 fatty acids on CD etiology.
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21
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Morilla I, Léger T, Marah A, Pic I, Zaag H, Ogier-Denis E. Singular manifolds of proteomic drivers to model the evolution of inflammatory bowel disease status. Sci Rep 2020; 10:19066. [PMID: 33149233 PMCID: PMC7643119 DOI: 10.1038/s41598-020-76011-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 10/13/2020] [Indexed: 02/07/2023] Open
Abstract
The conditions used to describe the presence of an immune disease are often represented by interaction graphs. These informative, but intricate structures are susceptible to perturbations at different levels. The mode in which that perturbation occurs is still of utmost importance in areas such as cell reprogramming and therapeutics models. In this sense, module identification can be useful to well characterise the global graph architecture. To help us with this identification, we perform topological overlap-related measures. Thanks to these measures, the location of highly disease-specific module regulators is possible. Such regulators can perturb other nodes, potentially causing the entire system to change behaviour or collapse. We provide a geometric framework explaining such situations in the context of inflammatory bowel diseases (IBD). IBD are severe chronic disorders of the gastrointestinal tract whose incidence is dramatically increasing worldwide. Our approach models different IBD status as Riemannian manifolds defined by the graph Laplacian of two high throughput proteome screenings. It also identifies module regulators as singularities within the manifolds (the so-called singular manifolds). Furthermore, it reinterprets the characteristic nonlinear dynamics of IBD as compensatory responses to perturbations on those singularities. Then, particular reconfigurations of the immune system could make the disease status move towards an innocuous target state.
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Affiliation(s)
- Ian Morilla
- Université Sorbonne Paris Nord, LAGA, CNRS, UMR 7539, Laboratoire d'excellence Inflamex, F-93430, Villetaneuse, France. .,INSERM, Research Centre of Inflammation, Laboratoire d'excellence Inflamex, BP 416, Paris, France.
| | - Thibaut Léger
- UMR 7592 CNRS, Institut Jacques Monod, Université Paris Diderot, Paris, France.,Université Rennes, Inserm, EHESP, Irset - UMRS 1085, 35000, Rennes, France
| | | | | | - Hatem Zaag
- Université Sorbonne Paris Nord, LAGA, CNRS, UMR 7539, Laboratoire d'excellence Inflamex, F-93430, Villetaneuse, France
| | - Eric Ogier-Denis
- INSERM, Research Centre of Inflammation, Laboratoire d'excellence Inflamex, BP 416, Paris, France
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22
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Xiao K, Xu Q, Liu C, He P, Qin Q, Zhu H, Zhang J, Gin A, Zhang G, Liu Y. Docosahexaenoic acid alleviates cell injury and improves barrier function by suppressing necroptosis signalling in TNF-α-challenged porcine intestinal epithelial cells. Innate Immun 2020; 26:653-665. [PMID: 33106070 PMCID: PMC7787556 DOI: 10.1177/1753425920966686] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 09/22/2020] [Accepted: 09/26/2020] [Indexed: 12/14/2022] Open
Abstract
Long-chain n-3 polyunsaturated fatty acids are known to have beneficial effects on intestinal health. However, the underling mechanisms are largely unknown. The present study was conducted to investigate whether docosahexaenoic acid (DHA) attenuates TNF-α-induced intestinal cell injury and barrier dysfunction by modulating necroptosis signalling. Intestinal porcine epithelial cell line 1 was cultured with or without 12.5 µg/ml DHA, followed by exposure to 50 ng/ml TNF-α for indicated time periods. DHA restored cell viability and cell number triggered by TNF-α. DHA also improved barrier function, which was indicated by increased trans-epithelial electrical resistance, decreased FD4 flux and increased membrane localisation of zonula occludins (ZO-1) and claudin-1. Moreover, DHA suppressed cell necrosis in TNF-α-challenged cells, as shown in the IncuCyte ZOOM™ live cell imaging system and transmission electron microscopy. In addition, DHA decreased protein expression of TNF receptor, receptor interacting protein kinase 1, RIP3 and phosphorylation of mixed lineage kinase-like protein, phosphoglycerate mutase family 5, dynamin-related protein 1 and high mobility group box-1 protein. Furthermore, DHA suppressed protein expression of caspase-3 and caspase-8. Collectively, these results indicate that DHA is capable of alleviating TNF-α-induced cell injury and barrier dysfunction by suppressing the necroptosis signalling pathway.
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Affiliation(s)
- Kan Xiao
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Hubei Collaborative Innovation Centre for Animal Nutrition and Feed Safety, Wuhan Polytechnic University, PR China
| | - Qiao Xu
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Hubei Collaborative Innovation Centre for Animal Nutrition and Feed Safety, Wuhan Polytechnic University, PR China
| | - Congcong Liu
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Hubei Collaborative Innovation Centre for Animal Nutrition and Feed Safety, Wuhan Polytechnic University, PR China
| | - Pengwei He
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Hubei Collaborative Innovation Centre for Animal Nutrition and Feed Safety, Wuhan Polytechnic University, PR China
| | - Qin Qin
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Hubei Collaborative Innovation Centre for Animal Nutrition and Feed Safety, Wuhan Polytechnic University, PR China
| | - Huiling Zhu
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Hubei Collaborative Innovation Centre for Animal Nutrition and Feed Safety, Wuhan Polytechnic University, PR China
| | - Jing Zhang
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Hubei Collaborative Innovation Centre for Animal Nutrition and Feed Safety, Wuhan Polytechnic University, PR China
| | - Ashley Gin
- Department of Animal and Food Sciences, Oklahoma State University, USA
| | - Guolong Zhang
- Department of Animal and Food Sciences, Oklahoma State University, USA
| | - Yulan Liu
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Hubei Collaborative Innovation Centre for Animal Nutrition and Feed Safety, Wuhan Polytechnic University, PR China
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23
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Exogenous L-arginine increases intestinal stem cell function through CD90+ stromal cells producing mTORC1-induced Wnt2b. Commun Biol 2020; 3:611. [PMID: 33097830 PMCID: PMC7584578 DOI: 10.1038/s42003-020-01347-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 10/02/2020] [Indexed: 01/02/2023] Open
Abstract
The renewal and repair of intestinal epithelium depend on the self-renewal of intestinal stem cells (ISCs) under physiological and pathological conditions. Although previous work has established that exogenous nutrients regulate adult stem cell activity, little is known about the regulatory effect of L-arginine on ISCs. In this study we utilize mice and small intestinal (SI) organoid models to clarify the role of L-arginine on epithelial differentiation of ISCs. We show that L-arginine increases expansion of ISCs in mice. Furthermore, CD90+ intestinal stromal cells augment stem-cell function in response to L-arginine in co-culture experiments. Mechanistically, we find that L-arginine stimulates Wnt2b secretion by CD90+ stromal cells through the mammalian target of rapamycin complex 1 (mTORC1) and that blocking Wnt2b production prevents L-arginine-induced ISC expansion. Finally, we show that L-arginine treatment protects the gut in response to injury. Our findings highlight an important role for CD90+ stromal cells in L-arginine-stimulated ISC expansion.
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24
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Pagano E, Iannotti FA, Piscitelli F, Romano B, Lucariello G, Venneri T, Di Marzo V, Izzo AA, Borrelli F. Efficacy of combined therapy with fish oil and phytocannabinoids in murine intestinal inflammation. Phytother Res 2020; 35:517-529. [PMID: 32996187 DOI: 10.1002/ptr.6831] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 06/24/2020] [Accepted: 07/13/2020] [Indexed: 12/16/2022]
Abstract
Fish oil (FO) and phytocannabinoids have received considerable attention for their intestinal anti-inflammatory effects. We investigated whether the combination of FO with cannabigerol (CBG) and cannabidiol (CBD) or a combination of all three treatments results in a more pronounced intestinal antiinflammatory action compared to the effects achieved separately. Colitis was induced in mice by 2,4-dinitrobenzenesulfonic acid (DNBS). CBD and CBG levels were detected and quantified by liquid chromatography coupled with time of flight mass spectrometry and ion trap mass spectrometry (LC-MS-IT-TOF). Endocannabinoids and related mediators were assessed by LC-MS. DNBS increased colon weight/colon length ratio, myeloperoxidase activity, interleukin-1β, and intestinal permeability. CBG, but not CBD, given by oral gavage, ameliorated DNBS-induced colonic inflammation. FO pretreatment (at the inactive dose) increased the antiinflammatory action of CBG and rendered oral CBD effective while reducing endocannabinoid levels. Furthermore, the combination of FO, CBD, and a per se inactive dose of CBG resulted in intestinal anti-inflammatory effects. Finally, FO did not alter phytocannabinoid levels in the serum and in the colon. By highlighting the apparent additivity between phytocannabinoids and FO, our preclinical data support a novel strategy of combining these substances for the potential development of a treatment of inflammatory bowel disease.
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Affiliation(s)
- Ester Pagano
- Department of Pharmacy, School of Medicine and Pharmacy, University of Naples Federico II, Naples, Italy.,Endocannabinoid Research Group
| | - Fabio A Iannotti
- Endocannabinoid Research Group.,Institute of Biomolecular Chemistry, CNR, Pozzuoli, Italy
| | - Fabiana Piscitelli
- Endocannabinoid Research Group.,Institute of Biomolecular Chemistry, CNR, Pozzuoli, Italy
| | - Barbara Romano
- Department of Pharmacy, School of Medicine and Pharmacy, University of Naples Federico II, Naples, Italy.,Endocannabinoid Research Group
| | - Giuseppe Lucariello
- Department of Pharmacy, School of Medicine and Pharmacy, University of Naples Federico II, Naples, Italy
| | - Tommaso Venneri
- Department of Pharmacy, School of Medicine and Pharmacy, University of Naples Federico II, Naples, Italy.,Canada Excellence Research Chair on the Microbiome-Endocannabinoidome Axis in Metabolic Health, Institut Universitaire de Cardiologie et de Pneumologie de Québec and Institut sur la Nutrition et les Aliments Fonctionnels Centre NUTRISS, Université Laval, Quebec City, Canada
| | - Vincenzo Di Marzo
- Endocannabinoid Research Group.,Institute of Biomolecular Chemistry, CNR, Pozzuoli, Italy.,Canada Excellence Research Chair on the Microbiome-Endocannabinoidome Axis in Metabolic Health, Institut Universitaire de Cardiologie et de Pneumologie de Québec and Institut sur la Nutrition et les Aliments Fonctionnels Centre NUTRISS, Université Laval, Quebec City, Canada
| | - Angelo A Izzo
- Department of Pharmacy, School of Medicine and Pharmacy, University of Naples Federico II, Naples, Italy.,Endocannabinoid Research Group
| | - Francesca Borrelli
- Department of Pharmacy, School of Medicine and Pharmacy, University of Naples Federico II, Naples, Italy.,Endocannabinoid Research Group
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25
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Ungaro F, D’Alessio S, Danese S. The Role of Pro-Resolving Lipid Mediators in Colorectal Cancer-Associated Inflammation: Implications for Therapeutic Strategies. Cancers (Basel) 2020; 12:cancers12082060. [PMID: 32722560 PMCID: PMC7463689 DOI: 10.3390/cancers12082060] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 07/23/2020] [Accepted: 07/24/2020] [Indexed: 02/06/2023] Open
Abstract
Inflammation is a recognized hallmark of cancer that contributes to the development and progression of colorectal cancer (CRC). Anti-inflammatory drugs currently used for the treatment of CRC show many adverse side effects that prompted researchers to propose the polyunsaturated fatty acids-derived specialized pro-resolving mediators (SPMs) as promoters of resolution of cancer-associated inflammation. SPMs were found to inhibit the CRC-associated pro-inflammatory milieu via specific G-coupled protein receptors, although clinical data are still lacking. This review aims to summarize the state-of-the-art in this field, ultimately providing insights for the development of innovative anti-CRC therapies that promote the endogenous lipid-mediated resolution of CRC-associated inflammation.
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Affiliation(s)
- Federica Ungaro
- IBD Center, Laboratory of Gastrointestinal Immunopathology, Humanitas Clinical and Research Center, Rozzano, 20089 Milan, Italy; (S.D.); (S.D.)
- Department of Biomedical Sciences, Humanitas University, Rozzano, 20089 Milan, Italy
- Correspondence:
| | - Silvia D’Alessio
- IBD Center, Laboratory of Gastrointestinal Immunopathology, Humanitas Clinical and Research Center, Rozzano, 20089 Milan, Italy; (S.D.); (S.D.)
- Department of Biomedical Sciences, Humanitas University, Rozzano, 20089 Milan, Italy
| | - Silvio Danese
- IBD Center, Laboratory of Gastrointestinal Immunopathology, Humanitas Clinical and Research Center, Rozzano, 20089 Milan, Italy; (S.D.); (S.D.)
- Department of Biomedical Sciences, Humanitas University, Rozzano, 20089 Milan, Italy
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26
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Molecular and Microbial Signatures Predictive of Prebiotic Action of Neoagarotetraose in a Dextran Sulfate Sodium-Induced Murine Colitis Model. Microorganisms 2020; 8:microorganisms8070995. [PMID: 32635315 PMCID: PMC7409226 DOI: 10.3390/microorganisms8070995] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 06/24/2020] [Accepted: 06/30/2020] [Indexed: 01/16/2023] Open
Abstract
Neoagarotetraose (NT), a hydrolytic product of agar by β-agarase, is known to possess bioactive properties. However, the mechanisms via which NT alleviates intestinal inflammation remain unknown. In this study, a dextran sulfate sodium (DSS)-induced murine model was developed to evaluate the effect of NT on gut microbiome and microbial metabolism using 16S rRNA gene sequencing and untargeted metabolomics. Our data demonstrate that NT ingestion improved gut integrity and inflammation scores. NT reversed the abundance of Proteobacteria from an elevated level induced by DSS and significantly increased the abundance of Verrucomicrobia. Further, NT significantly increased the abundance of Akkermansia and Lactobacillus and concomitantly decreased that of Sutterella, which were among the important features identified by random forests analysis contributing to classification accuracy for NT supplementation. A microbial signature consisting of Adlercreutzia (denominator) and Turicibacter (numerator) predicted the NT supplementation status. Moreover, NT significantly modulated multiple gut metabolites, particularly those related to histidine, polyamine and tocopherol metabolism. Together, our findings provided novel insights into the mechanisms by which NT modulated the gut microbiome and metabolome and should facilitate the development of NT as a potent prebiotic for colitis management.
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27
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Kostoglou-Athanassiou I, Athanassiou L, Athanassiou P. The Effect of Omega-3 Fatty Acids on Rheumatoid Arthritis. Mediterr J Rheumatol 2020; 31:190-194. [PMID: 32676556 PMCID: PMC7362115 DOI: 10.31138/mjr.31.2.190] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 11/30/2019] [Indexed: 12/14/2022] Open
Abstract
Omega-3 fatty acids are unsaturated fatty acids thought to play a role in health and disease. They are known as essential fatty acids, as they cannot be synthesized in mammals. Omega-3 fatty acids have a beneficial effect on the secondary prevention of coronary artery disease and stroke and are essential for the development and function of the nervous system and the retina in man. Omega-3 fatty acids are thought to have immunomodulatory properties as they act as precursors to lipid mediators of inflammation which may limit or modulate the inflammatory response. Omega-3 fatty acids seem to prevent or attenuate experimental arthritis. They may have a beneficial effect in the treatment of rheumatoid arthritis. Clinical studies have shown that omega-3 fatty acids may have a modulatory effect on disease activity, namely on the number of swollen and tender joints. It appears that omega-3 fatty acids may modulate disease activity in rheumatoid arthritis.
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28
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Hou Q, Dong Y, Yu Q, Wang B, Le S, Guo Y, Zhang B. Regulation of the Paneth cell niche by exogenous L-arginine couples the intestinal stem cell function. FASEB J 2020; 34:10299-10315. [PMID: 32725957 DOI: 10.1096/fj.201902573rr] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 04/22/2020] [Accepted: 05/20/2020] [Indexed: 12/21/2022]
Abstract
Although previous studies show that exogenous nutrients regulate the stem cell function, little is known about the effects of L-arginine on intestinal stem cells (ISCs). In this study, we utilize mice, small intestinal (SI) organoids, and ISC-Paneth cell co-cultured models to clarify the role of L-arginine in ISC function. We find that exogenous L-arginine is essential for ISCs proliferation and intestinal epithelial renewal. Our data show that Paneth cells, a critical component of the ISCs niche, augment the ISCs function in response to L-arginine. Moreover, enhanced the expression of Wnt3a in Paneth cells, which is a ligand of the Wnt/β-catenin signaling pathway, mediates the effects of L-arginine on ISCs function. Pre-treatment with L-arginine enhances the ISCs pool and protects the gut in response to injury provoked by murine tumor necrosis factor α (TNF-α) and 5-Fluorouracil (5-FU). Our findings establish that the regulation of Wnt3a in the Paneth cell niche by exogenous L-arginine couples ISCs function and favours a model in which the ISCs niche couples the nutrient levels to ISCs function.
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Affiliation(s)
- Qihang Hou
- State Key Laboratory of Animal Nutrition, Department of Animal Nutrition & Feed Science, College of Animal Science & Technology, China Agricultural University, Beijing, China
| | - Yuanyang Dong
- State Key Laboratory of Animal Nutrition, Department of Animal Nutrition & Feed Science, College of Animal Science & Technology, China Agricultural University, Beijing, China
| | - Qinghua Yu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Bo Wang
- State Key Laboratory of Animal Nutrition, Department of Animal Nutrition & Feed Science, College of Animal Science & Technology, China Agricultural University, Beijing, China
| | - Shen Le
- Department of Surgery, The University of Chicago, Chicago, IL, USA
| | - Yuming Guo
- State Key Laboratory of Animal Nutrition, Department of Animal Nutrition & Feed Science, College of Animal Science & Technology, China Agricultural University, Beijing, China
| | - Bingkun Zhang
- State Key Laboratory of Animal Nutrition, Department of Animal Nutrition & Feed Science, College of Animal Science & Technology, China Agricultural University, Beijing, China
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29
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Mayr L, Grabherr F, Schwärzler J, Reitmeier I, Sommer F, Gehmacher T, Niederreiter L, He GW, Ruder B, Kunz KTR, Tymoszuk P, Hilbe R, Haschka D, Feistritzer C, Gerner RR, Enrich B, Przysiecki N, Seifert M, Keller MA, Oberhuber G, Sprung S, Ran Q, Koch R, Effenberger M, Tancevski I, Zoller H, Moschen AR, Weiss G, Becker C, Rosenstiel P, Kaser A, Tilg H, Adolph TE. Dietary lipids fuel GPX4-restricted enteritis resembling Crohn's disease. Nat Commun 2020; 11:1775. [PMID: 32286299 PMCID: PMC7156516 DOI: 10.1038/s41467-020-15646-6] [Citation(s) in RCA: 129] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Accepted: 03/23/2020] [Indexed: 12/19/2022] Open
Abstract
The increased incidence of inflammatory bowel disease (IBD) has become a global phenomenon that could be related to adoption of a Western life-style. Westernization of dietary habits is partly characterized by enrichment with the ω-6 polyunsaturated fatty acid (PUFA) arachidonic acid (AA), which entails risk for developing IBD. Glutathione peroxidase 4 (GPX4) protects against lipid peroxidation (LPO) and cell death termed ferroptosis. We report that small intestinal epithelial cells (IECs) in Crohn’s disease (CD) exhibit impaired GPX4 activity and signs of LPO. PUFAs and specifically AA trigger a cytokine response of IECs which is restricted by GPX4. While GPX4 does not control AA metabolism, cytokine production is governed by similar mechanisms as ferroptosis. A PUFA-enriched Western diet triggers focal granuloma-like neutrophilic enteritis in mice that lack one allele of Gpx4 in IECs. Our study identifies dietary PUFAs as a trigger of GPX4-restricted mucosal inflammation phenocopying aspects of human CD. Dietary lipids are linked to the development of inflammatory bowel diseases through unclear mechanisms. Here, the authors report that dietary polyunsaturated fatty acids trigger intestinal inflammation resembling aspects of Crohn’s disease, which is restricted by glutathione peroxidase 4 in the intestinal epithelium.
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Affiliation(s)
- Lisa Mayr
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Felix Grabherr
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Julian Schwärzler
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Isabelle Reitmeier
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Felix Sommer
- Institute of Clinical Molecular Biology, Christian-Albrechts-University Kiel and University Hospital Schleswig-Holstein, Kiel, Germany
| | - Thomas Gehmacher
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Lukas Niederreiter
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Gui-Wei He
- Department of Medicine 1, Gastroenterology, Pneumology and Endocrinology, University Medical Center Erlangen, Erlangen, Germany
| | - Barbara Ruder
- Department of Medicine 1, Gastroenterology, Pneumology and Endocrinology, University Medical Center Erlangen, Erlangen, Germany
| | - Kai T R Kunz
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Piotr Tymoszuk
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of Innsbruck, Innsbruck, Austria
| | - Richard Hilbe
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of Innsbruck, Innsbruck, Austria.,Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| | - David Haschka
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of Innsbruck, Innsbruck, Austria
| | - Clemens Feistritzer
- Department of Internal Medicine V, Haematology and Oncology, Medical University of Innsbruck, Innsbruck, Austria
| | - Romana R Gerner
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Barbara Enrich
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Nicole Przysiecki
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria.,Christian Doppler Laboratory for Mucosal Immunology, Medical University of Innsbruck, Innsbruck, Austria
| | - Markus Seifert
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of Innsbruck, Innsbruck, Austria.,Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| | - Markus A Keller
- Institute of Human Genetics, Medical University of Innsbruck, Innsbruck, Austria
| | - Georg Oberhuber
- Pathology Department of Innsbruck Medical University Hospital, Innsbruck, Austria
| | - Susanne Sprung
- Department of Pathology, Medical University of Innsbruck, Innsbruck, Austria
| | - Qitao Ran
- Department of Cell Systems and Anatomy, UT Health San Antonio, San Antonio, Texas, USA
| | - Robert Koch
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Maria Effenberger
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Ivan Tancevski
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of Innsbruck, Innsbruck, Austria
| | - Heinz Zoller
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Alexander R Moschen
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria.,Christian Doppler Laboratory for Mucosal Immunology, Medical University of Innsbruck, Innsbruck, Austria
| | - Günter Weiss
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of Innsbruck, Innsbruck, Austria.,Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| | - Christoph Becker
- Department of Medicine 1, Gastroenterology, Pneumology and Endocrinology, University Medical Center Erlangen, Erlangen, Germany
| | - Philip Rosenstiel
- Institute of Clinical Molecular Biology, Christian-Albrechts-University Kiel and University Hospital Schleswig-Holstein, Kiel, Germany
| | - Arthur Kaser
- Division of Gastroenterology and Hepatology, Department of Medicine, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK
| | - Herbert Tilg
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Timon E Adolph
- Department of Internal Medicine I, Gastroenterology, Hepatology & Endocrinology, Medical University of Innsbruck, Innsbruck, Austria.
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30
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Becker F, Romero E, Goetzmann J, Hasselschwert DL, Dray B, Vanchiere J, Fontenot J, Yun JW, Norris PC, White L, Musso M, Serhan CN, Alexander JS, Gavins FNE. Endogenous Specialized Proresolving Mediator Profiles in a Novel Experimental Model of Lymphatic Obstruction and Intestinal Inflammation in African Green Monkeys. THE AMERICAN JOURNAL OF PATHOLOGY 2020; 189:1953-1972. [PMID: 31547920 DOI: 10.1016/j.ajpath.2019.05.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 04/18/2019] [Accepted: 05/09/2019] [Indexed: 12/16/2022]
Abstract
Changes in the intestinal lymphatic vascular system, such as lymphatic obstruction, are characteristic features of inflammatory bowel diseases. The lymphatic vasculature forms a conduit to enable resolution of inflammation; this process is driven by specialized endogenous proresolving mediators (SPMs). To evaluate contributions of lymphatic obstruction to intestinal inflammation and to study profiles of SPMs, we generated a novel animal model of lymphatic obstruction using African green monkeys. Follow-up studies were performed at 7, 21, and 61 days. Inflammation was determined by histology. Luminex assays were performed to evaluate chemokine and cytokine levels. In addition, lipid mediator metabololipidomic profiling was performed to identify SPMs. After 7 days, lymphatic obstruction resulted in a localized inflammatory state, paralleled by an increase in inflammatory chemokines and cytokines, which were found to be up-regulated after 7 days but returned to baseline after 21 and 61 days. At the same time, a distinct pattern of SPMs was profiled, with an increase for D-series resolvins, protectins, maresins, and lipoxins at 61 days. These results indicate that intestinal lymphatic obstruction can lead to an acute inflammatory state, accompanied by an increase in proinflammatory mediators, followed by a phase of resolution, paralleled by an increase and decrease of respective SPMs.
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Affiliation(s)
- Felix Becker
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana; Department of General, Visceral and Transplant Surgery, University of Münster, Münster, Germany
| | - Emily Romero
- New Iberia Research Center, University of Louisiana at Lafayette, New Iberia, Louisiana
| | - Jason Goetzmann
- New Iberia Research Center, University of Louisiana at Lafayette, New Iberia, Louisiana
| | - Dana L Hasselschwert
- New Iberia Research Center, University of Louisiana at Lafayette, New Iberia, Louisiana
| | - Beth Dray
- Department of Veterinary Science and Keeling Center for Comparative Medicine and Research, The University of Texas MD Anderson Cancer Center, Bastrop, Texas
| | - John Vanchiere
- Section of Pediatric Infectious Diseases, Department of Pediatrics, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana
| | - Jane Fontenot
- New Iberia Research Center, University of Louisiana at Lafayette, New Iberia, Louisiana
| | - J Winny Yun
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana
| | - Paul C Norris
- Center for Experimental Therapeutics and Reperfusion Injury, Department of Anesthesiology, Perioperative, and Pain Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Luke White
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana
| | - Melany Musso
- New Iberia Research Center, University of Louisiana at Lafayette, New Iberia, Louisiana
| | - Charles N Serhan
- Center for Experimental Therapeutics and Reperfusion Injury, Department of Anesthesiology, Perioperative, and Pain Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - J Steven Alexander
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana; Department of Neurology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana
| | - Felicity N E Gavins
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, Louisiana; Department of Life Sciences, Brunel University London, London, United Kingdom.
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31
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Sukocheva OA, Furuya H, Ng ML, Friedemann M, Menschikowski M, Tarasov VV, Chubarev VN, Klochkov SG, Neganova ME, Mangoni AA, Aliev G, Bishayee A. Sphingosine kinase and sphingosine-1-phosphate receptor signaling pathway in inflammatory gastrointestinal disease and cancers: A novel therapeutic target. Pharmacol Ther 2020; 207:107464. [PMID: 31863815 DOI: 10.1016/j.pharmthera.2019.107464] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 12/10/2019] [Indexed: 02/07/2023]
Abstract
Inflammatory gastrointestinal (GI) diseases and malignancies are associated with growing morbidity and cancer-related mortality worldwide. GI tumor and inflammatory cells contain activated sphingolipid-metabolizing enzymes, including sphingosine kinase 1 (SphK1) and SphK2, that generate sphingosine-1-phosphate (S1P), a highly bioactive compound. Many inflammatory responses, including lymphocyte trafficking, are directed by circulatory S1P, present in high concentrations in both the plasma and the lymph of cancer patients. High fat and sugar diet, disbalanced intestinal flora, and obesity have recently been linked to activation of inflammation and SphK/S1P/S1P receptor (S1PR) signaling in various GI pathologies, including cancer. SphK1 overexpression and activation facilitate and enhance the development and progression of esophageal, gastric, and colon cancers. SphK/S1P axis, a mediator of inflammation in the tumor microenvironment, has recently been defined as a target for the treatment of GI disease states, including inflammatory bowel disease and colitis. Several SphK1 inhibitors and S1PR antagonists have been developed as novel anti-inflammatory and anticancer agents. In this review, we analyze the mechanisms of SphK/S1P signaling in GI tissues and critically appraise recent studies on the role of SphK/S1P/S1PR in inflammatory GI disorders and cancers. The potential role of SphK/S1PR inhibitors in the prevention and treatment of inflammation-mediated GI diseases, including GI cancer, is also evaluated.
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Affiliation(s)
- Olga A Sukocheva
- Discipline of Health Sciences, College of Nursing and Health Sciences, Flinders University, Bedford Park, South Australia 5042, Australia
| | - Hideki Furuya
- Department of Surgery, Samuel Oschin Cancer Center Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Mei Li Ng
- Advanced Medical and Dental Institute, University Sains 13200 Kepala Batas, Pulau Pinang, Malaysia
| | - Markus Friedemann
- Institute of Clinical Chemistry and Laboratory Medicine, University Hospital `Carl Gustav Carus`, Technical University of Dresden, Dresden 01307, Germany
| | - Mario Menschikowski
- Institute of Clinical Chemistry and Laboratory Medicine, University Hospital `Carl Gustav Carus`, Technical University of Dresden, Dresden 01307, Germany
| | - Vadim V Tarasov
- Sechenov First Moscow State Medical University (Sechenov University), Moscow 119991, Russia
| | - Vladimir N Chubarev
- Sechenov First Moscow State Medical University (Sechenov University), Moscow 119991, Russia
| | - Sergey G Klochkov
- Institute of Physiologically Active Compounds, Russian Academy of Sciences, Chernogolovka 142432, Russia
| | - Margarita E Neganova
- Institute of Physiologically Active Compounds, Russian Academy of Sciences, Chernogolovka 142432, Russia
| | - Arduino A Mangoni
- Discipline of Clinical Pharmacology, College of Medicine and Public Health, Flinders University and Flinders Medical Centre, Bedford Park, South Australia 5042, Australia
| | - Gjumrakch Aliev
- Sechenov First Moscow State Medical University (Sechenov University), Moscow 119991, Russia; Institute of Physiologically Active Compounds, Russian Academy of Sciences, Chernogolovka 142432, Russia; GALLY International Research Institute, San Antonio, TX 78229, USA; Research Institute of Human Morphology, Moscow 117418, Russia
| | - Anupam Bishayee
- Lake Erie College of Osteopathic Medicine, Bradenton, FL 34211, USA.
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32
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Määttänen P, Lurz E, Botts SR, Wu RY, Robinson SC, Yeung CW, Colas R, Li B, Johnson-Henry KC, Surette ME, Dalli J, Sherman PM. Plant- and Fish-Derived n-3 PUFAs Suppress Citrobacter Rodentium-Induced Colonic Inflammation. Mol Nutr Food Res 2020; 64:e1900873. [PMID: 31945799 DOI: 10.1002/mnfr.201900873] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 12/05/2019] [Indexed: 02/06/2023]
Abstract
SCOPE Marine-derived n-3 PUFAs may ameliorate inflammation associated with inflammatory bowel diseases. Plant-derived n-3 PUFAs are thought to be inferior owing to shorter chain lengths. The aim of this study is to compare the impact of plant- and fish-derived PUFAs on murine colitis. METHODS AND RESULTS C57BL/6 mice are fed high fat (36% kcal) diets with either 2.5% w/w sunflower oil (SO), flaxseed oil (FSO), ahiflower oil (AO), or fish oil (FO). After 4 weeks, mice are orogastrically challenged with Citrobacter rodentium (108 CFU) or sham gavaged. Fecal shedding is assayed at 2, 7, 10, and 14 days post infection (PI), and fecal microbiota at 14 days PI. Colonic inflammation and lipid mediators are measured. Supplementation regulates intestinal inflammation with crypt lengths being 66, 73, and 62 ±17 µm shorter (compared to SO) for FSO, AO, and FO respectively, p < 0.01. FSO blunts pathogen shedding at the peak of infection and FSO and AO both enhance fecal microbial diversity. FO attenuates levels of lipoxin and leukotriene B4 while plant oils increase pro-resolving mediator concentrations including D, E, and T-series resolvins. CONCLUSION Plant and fish n-3 PUFAs attenuate colitis-induced inflammation while exhibiting characteristic pro-resolving lipid mediator metabolomes. Plant oils additionally promote microbial diversity.
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Affiliation(s)
- Pekka Määttänen
- Cell Biology Program, Research Institute, Division of Gastroenterology, Hepatology and Nutrition, Hospital for Sick Children, Toronto, Ontario, M5G 1X8, Canada.,Biology Department, Burman University, Lacombe, Alberta, T4L 2E5, Canada
| | - Eberhard Lurz
- Cell Biology Program, Research Institute, Division of Gastroenterology, Hepatology and Nutrition, Hospital for Sick Children, Toronto, Ontario, M5G 1X8, Canada.,Division of Gastroenterology, Hepatology and Nutrition, von Haunersches Kinderspital, Ludwig-Maximillians-University LMU, Munich, 80539, Germany
| | - Steven R Botts
- Cell Biology Program, Research Institute, Division of Gastroenterology, Hepatology and Nutrition, Hospital for Sick Children, Toronto, Ontario, M5G 1X8, Canada
| | - Richard Y Wu
- Cell Biology Program, Research Institute, Division of Gastroenterology, Hepatology and Nutrition, Hospital for Sick Children, Toronto, Ontario, M5G 1X8, Canada.,Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, M5S 1A1, Canada
| | - Shaiya C Robinson
- Cell Biology Program, Research Institute, Division of Gastroenterology, Hepatology and Nutrition, Hospital for Sick Children, Toronto, Ontario, M5G 1X8, Canada
| | - C William Yeung
- Cell Biology Program, Research Institute, Division of Gastroenterology, Hepatology and Nutrition, Hospital for Sick Children, Toronto, Ontario, M5G 1X8, Canada
| | - Romain Colas
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Charterhouse Square, London, EC1M 6BQ, UK
| | - Bo Li
- Division of General and Thoracic Surgery, The Hospital for Sick Children, Toronto, Ontario, M5G 1X8, Canada
| | - Kathene C Johnson-Henry
- Cell Biology Program, Research Institute, Division of Gastroenterology, Hepatology and Nutrition, Hospital for Sick Children, Toronto, Ontario, M5G 1X8, Canada
| | - Marc E Surette
- Department of Chemistry and Biochemistry, Université de Moncton, Moncton, New Brunswick, E1A 3E9, Canada
| | - Jesmond Dalli
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Charterhouse Square, London, EC1M 6BQ, UK.,Centre for Inflammation and Therapeutic Innovation, Queen Mary University of London, London, E1 4NS, UK
| | - Philip M Sherman
- Cell Biology Program, Research Institute, Division of Gastroenterology, Hepatology and Nutrition, Hospital for Sick Children, Toronto, Ontario, M5G 1X8, Canada.,Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, M5S 1A1, Canada.,Faculty of Dentistry, University of Toronto, Toronto, Ontario, M5S 1A1, Canada
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De Sousa Rodrigues ME, Houser MC, Walker DI, Jones DP, Chang J, Barnum CJ, Tansey MG. Targeting soluble tumor necrosis factor as a potential intervention to lower risk for late-onset Alzheimer's disease associated with obesity, metabolic syndrome, and type 2 diabetes. ALZHEIMERS RESEARCH & THERAPY 2019; 12:1. [PMID: 31892368 PMCID: PMC6937979 DOI: 10.1186/s13195-019-0546-4] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 10/16/2019] [Indexed: 02/08/2023]
Abstract
Background Insulin impairment and inflammation are two features common to type 2 diabetes and Alzheimer’s disease; however, the molecular and signaling interactions underlying this relationship are not well understood. Mounting evidence point to the associations between the disruption of metabolite processing in insulin impairment and neurodegenerative conditions such as Alzheimer’s. Although the brain depends partially on metabolites processed in the periphery, to date, little is known about how soluble tumor necrosis factor signaling (solTNF) impacts integrated peripheral immune and metabolic feedback signals in states of energy overload and insulin insensitivity. Methods C57Bl/6J mice were fed a high-fat high-carbohydrate diet (HFHC) for 14 weeks. The brain-permeant biologic XPro1595® was used to block solTNF-dependent pathways. Metabolic and immune alterations were evaluated in the gut, liver, and brain. Behavioral tests were performed. Untargeted metabolomics was carried out in the plasma and liver. Results HFHC diet promotes central insulin impairment and dysregulation of immune-modulatory gene expressed in the brain. Alteration of metabolites associated with type 2 diabetes and Alzheimer’s such as butanoate, glutamate, biopterin, branched-chain amino acids, purines, and proteoglycan metabolism was observed in HFHC-fed mice. solTNF inhibition ameliorates hepatic metabolic disturbances and hepatic and intestinal lipocalin-2 levels, and decreases insulin impairment in the brain and behavioral deficits associated with HFHC diet. Conclusions Our novel findings suggest that HFHC diet impacts central insulin signaling and immune-metabolic interactions in a solTNF-dependent manner to increase the risk for neurodegenerative conditions. Our novel findings indicate that selective solTNF neutralization can ameliorate peripheral and central diet-induced insulin impairment and identify lipocalin-2 as a potential target for therapeutic intervention to target inflammation and insulin disturbances in obesogenic environments. Collectively, our findings identify solTNF as a potential target for therapeutic intervention in inflammatory states and insulin disturbances in obesogenic environments to lower risk for AD.
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Affiliation(s)
| | - Madelyn C Houser
- Department of Physiology, School of Medicine at Emory University, 615 Michael Street, Atlanta, GA, 30322-3110, USA
| | - Douglas I Walker
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University Emory, 615 Michael Street, Atlanta, GA, 30322, USA.,Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, 10003, USA
| | - Dean P Jones
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University Emory, 615 Michael Street, Atlanta, GA, 30322, USA
| | - Jianjun Chang
- Department of Physiology, School of Medicine at Emory University, 615 Michael Street, Atlanta, GA, 30322-3110, USA
| | - Christopher J Barnum
- Department of Physiology, School of Medicine at Emory University, 615 Michael Street, Atlanta, GA, 30322-3110, USA
| | - Malú G Tansey
- Department of Physiology, School of Medicine at Emory University, 615 Michael Street, Atlanta, GA, 30322-3110, USA. .,Department of Neuroscience, Center for Translational Research in Neurodegenerative Disease, University of Florida College of Medicine, McKnight Brain Institute, Gainesville, FL, USA.
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Keely SJ, Steer CJ, Lajczak-McGinley NK. Ursodeoxycholic acid: a promising therapeutic target for inflammatory bowel diseases? Am J Physiol Gastrointest Liver Physiol 2019; 317:G872-G881. [PMID: 31509435 DOI: 10.1152/ajpgi.00163.2019] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The secondary bile acid ursodeoxycholic acid (UDCA) has long been known to have medicinal properties. As the therapeutically active component of bear bile, it has been used for centuries in traditional Chinese medicine to treat a range of conditions, while manufactured UDCA has been used for decades in Western medicine to treat cholestatic liver diseases. The beneficial qualities of UDCA are thought to be due to its well-established cytoprotective and anti-inflammatory actions. In addition to its established role in treating liver diseases, UDCA is now under investigation for numerous conditions associated with inflammation and apoptosis, including neurological, ocular, metabolic, and cardiovascular diseases. Here, we review the growing evidence base from in vitro and in vivo models to suggest that UDCA may also have a role to play in the therapy of inflammatory bowel diseases.
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Affiliation(s)
- Stephen J Keely
- Department of Molecular Medicine, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland
| | - Clifford J Steer
- Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, University of Minnesota Medical School, Minneapolis, Minnesota.,Department of Genetics, Cell Biology, and Development, University of Minnesota Medical School, Minneapolis, Minnesota
| | - Natalia K Lajczak-McGinley
- Department of Molecular Medicine, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland
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35
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Thoo L, Noti M, Krebs P. Keep calm: the intestinal barrier at the interface of peace and war. Cell Death Dis 2019; 10:849. [PMID: 31699962 PMCID: PMC6838056 DOI: 10.1038/s41419-019-2086-z] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 10/11/2019] [Accepted: 10/23/2019] [Indexed: 12/19/2022]
Abstract
Epithelial barriers have to constantly cope with both harmless and harmful stimuli. The epithelial barrier therefore serves as a dynamic and not static wall to safeguard its proper physiological function while ensuring protection. This is achieved through multiple defence mechanisms involving various cell types - epithelial and non-epithelial - that work in an integrated manner to build protective barriers at mucosal sites. Damage may nevertheless occur, due to pathogens, physical insults or dysregulated immune responses, which trigger a physiologic acute or a pathologic chronic inflammatory cascade. Inflammation is often viewed as a pathological condition, particularly due to the increasing prevalence of chronic inflammatory (intestinal) diseases. However, inflammation is also necessary for wound healing. The aetiology of chronic inflammatory diseases is incompletely understood and identification of the underlying mechanisms would reveal additional therapeutic approaches. Resolution is an active host response to end ongoing inflammation but its relevance is under-appreciated. Currently, most therapies aim at dampening inflammation at damaged mucosal sites, yet these approaches do not efficiently shut down the inflammation process nor repair the epithelial barrier. Therefore, future treatment strategies should also promote the resolution phase. Yet, the task of repairing the barrier can be an arduous endeavour considering its multiple integrated layers of defence - which is advantageous for damage prevention but becomes challenging to repair at multiple levels. In this review, using the intestines as a model epithelial organ and barrier paradigm, we describe the consequences of chronic inflammation and highlight the importance of the mucosae to engage resolving processes to restore epithelial barrier integrity and function. We further discuss the contribution of pre-mRNA alternative splicing to barrier integrity and intestinal homeostasis. Following discussions on current open questions and challenges, we propose a model in which resolution of inflammation represents a key mechanism for the restoration of epithelial integrity and function.
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Affiliation(s)
- Lester Thoo
- Division of Experimental Pathology, Institute of Pathology, University of Bern, Bern, Switzerland.,Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - Mario Noti
- Division of Experimental Pathology, Institute of Pathology, University of Bern, Bern, Switzerland.,Department of Gastro-Intestinal Health, Immunology, Nestlé Institute of Health Sciences, Nestlé Research, Lausanne, Switzerland
| | - Philippe Krebs
- Division of Experimental Pathology, Institute of Pathology, University of Bern, Bern, Switzerland.
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36
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Warner DR, Warner JB, Hardesty JE, Song YL, King TN, Kang JX, Chen CY, Xie S, Yuan F, Prodhan MAI, Ma X, Zhang X, Rouchka EC, Maddipati KR, Whitlock J, Li EC, Wang GP, McClain CJ, Kirpich IA. Decreased ω-6:ω-3 PUFA ratio attenuates ethanol-induced alterations in intestinal homeostasis, microbiota, and liver injury. J Lipid Res 2019; 60:2034-2049. [PMID: 31586017 DOI: 10.1194/jlr.ra119000200] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Revised: 09/22/2019] [Indexed: 02/07/2023] Open
Abstract
Ethanol (EtOH)-induced alterations in intestinal homeostasis lead to multi-system pathologies, including liver injury. ω-6 PUFAs exert pro-inflammatory activity, while ω-3 PUFAs promote anti-inflammatory activity that is mediated, in part, through specialized pro-resolving mediators [e.g., resolvin D1 (RvD1)]. We tested the hypothesis that a decrease in the ω-6:ω-3 PUFA ratio would attenuate EtOH-mediated alterations in the gut-liver axis. ω-3 FA desaturase-1 (fat-1) mice, which endogenously increase ω-3 PUFA levels, were protected against EtOH-mediated downregulation of intestinal tight junction proteins in organoid cultures and in vivo. EtOH- and lipopolysaccharide-induced expression of INF-γ, Il-6, and Cxcl1 was attenuated in fat-1 and WT RvD1-treated mice. RNA-seq of ileum tissue revealed upregulation of several genes involved in cell proliferation, stem cell renewal, and antimicrobial defense (including Alpi and Leap2) in fat-1 versus WT mice fed EtOH. fat-1 mice were also resistant to EtOH-mediated downregulation of genes important for xenobiotic/bile acid detoxification. Further, gut microbiome and plasma metabolomics revealed several changes in fat-1 versus WT mice that may contribute to a reduced inflammatory response. Finally, these data correlated with a significant reduction in liver injury. Our study suggests that ω-3 PUFA enrichment or treatment with resolvins can attenuate the disruption in intestinal homeostasis caused by EtOH consumption and systemic inflammation with a concomitant reduction in liver injury.
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Affiliation(s)
- Dennis R Warner
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, University of Louisville, Louisville, KY
| | - Jeffrey B Warner
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, University of Louisville, Louisville, KY.,Department of Medicine Division of Infectious Diseases and Global Medicine, College of Medicine, University of Florida, Gainesville, FL
| | - Josiah E Hardesty
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, University of Louisville, Louisville, KY
| | - Ying L Song
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, University of Louisville, Louisville, KY
| | - Taylor N King
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, University of Louisville, Louisville, KY
| | - Jing X Kang
- Laboratory for Lipid Medicine and Technology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Chih-Yu Chen
- Laboratory for Lipid Medicine and Technology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Shanfu Xie
- Laboratory for Lipid Medicine and Technology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Fang Yuan
- Department of Chemistry, University of Louisville, Louisville, KY
| | | | - Xipeng Ma
- Department of Chemistry, University of Louisville, Louisville, KY
| | - Xiang Zhang
- Department of Chemistry, University of Louisville, Louisville, KY
| | - Eric C Rouchka
- Department of Computer Engineering and Computer Science, Speed School of Engineering, University of Louisville, Louisville, KY
| | | | - Joan Whitlock
- Department of Medicine Division of Infectious Diseases and Global Medicine, College of Medicine, University of Florida, Gainesville, FL
| | - Eric C Li
- Department of Medicine Division of Infectious Diseases and Global Medicine, College of Medicine, University of Florida, Gainesville, FL
| | - Gary P Wang
- Department of Medicine Division of Infectious Diseases and Global Medicine, College of Medicine, University of Florida, Gainesville, FL
| | - Craig J McClain
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, University of Louisville, Louisville, KY.,Department of Pharmacology and Toxicology and University of Louisville Alcohol Center, University of Louisville School of Medicine, Louisville, KY.,Robley Rex Veterans Medical Center, Louisville, KY
| | - Irina A Kirpich
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, University of Louisville, Louisville, KY .,Department of Pharmacology and Toxicology and University of Louisville Alcohol Center, University of Louisville School of Medicine, Louisville, KY
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37
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Ungaro F, Massimino L, D'Alessio S, Danese S. The gut virome in inflammatory bowel disease pathogenesis: From metagenomics to novel therapeutic approaches. United European Gastroenterol J 2019; 7:999-1007. [PMID: 31662858 DOI: 10.1177/2050640619876787] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 08/16/2019] [Indexed: 12/24/2022] Open
Abstract
The association of intestinal dysbiosis with the pathogenesis of inflammatory bowel disease has been well established. Besides bacteria, microbiota comprises yeasts, archaea, protists and viruses, neglected actors in inflammatory bowel disease-associated microbiota. In the past, a great limitation in studying microbiota composition was the low sensitivity of sequencing technologies and that few computational approaches were sufficient to thoroughly analyse the whole microbiome. However, new cutting-edge technologies in nucleic acid sequencing, -omics analysis and the innovative statistics and bioinformatics pipelines made possible more sensitive and accurate metagenomics, ultimately identifying novel players in intestinal inflammation, including prokaryotic and eukaryotic viruses, that together form the gut virome. The discovery of peculiar inflammatory bowel disease-associated microbial strains will not only shed new light on inflammatory bowel disease aetiogenesis, they may also support the development of novel therapeutic strategies not merely treating symptoms, but precisely counteracting the primary cause of chronic intestinal inflammation.
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Affiliation(s)
- Federica Ungaro
- IBD Center, Laboratory of Gastrointestinal Immunopathology, Humanitas Clinical and Research Center, Milan, Italy.,Department of Biomedical Sciences, Humanitas University, Milan, Italy
| | - Luca Massimino
- Division of Neuroscience, San Raffaele Scientific Institute, Milan, Italy
| | - Silvia D'Alessio
- IBD Center, Laboratory of Gastrointestinal Immunopathology, Humanitas Clinical and Research Center, Milan, Italy.,Department of Biomedical Sciences, Humanitas University, Milan, Italy
| | - Silvio Danese
- IBD Center, Laboratory of Gastrointestinal Immunopathology, Humanitas Clinical and Research Center, Milan, Italy.,Department of Biomedical Sciences, Humanitas University, Milan, Italy
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38
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Barnig C, Bezema T, Calder PC, Charloux A, Frossard N, Garssen J, Haworth O, Dilevskaya K, Levi-Schaffer F, Lonsdorfer E, Wauben M, Kraneveld AD, Te Velde AA. Activation of Resolution Pathways to Prevent and Fight Chronic Inflammation: Lessons From Asthma and Inflammatory Bowel Disease. Front Immunol 2019; 10:1699. [PMID: 31396220 PMCID: PMC6664683 DOI: 10.3389/fimmu.2019.01699] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 07/08/2019] [Indexed: 12/15/2022] Open
Abstract
Formerly considered as a passive process, the resolution of acute inflammation is now recognized as an active host response, with a cascade of coordinated cellular and molecular events that promotes termination of the inflammatory response and initiates tissue repair and healing. In a state of immune fitness, the resolution of inflammation is contained in time and space enabling the restoration of tissue homeostasis. There is increasing evidence that poor and/or inappropriate resolution of inflammation participates in the pathogenesis of chronic inflammatory diseases, extending in time the actions of pro-inflammatory mechanisms, and responsible in the long run for excessive tissue damage and pathology. In this review, we will focus on how resolution can be the target for therapy in "Th1/Th17 cell-driven" immune diseases and "Th2 cell-driven" immune diseases, with inflammatory bowel diseases (IBD) and asthma, as relevant examples. We describe the main cells and mediators stimulating the resolution of inflammation and discuss how pharmacological and dietary interventions but also life style factors, physical and psychological conditions, might influence the resolution phase. A better understanding of the impact of endogenous and exogenous factors on the resolution of inflammation might open a whole area in the development of personalized therapies in non-resolving chronic inflammatory diseases.
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Affiliation(s)
- Cindy Barnig
- Department of Chest Disease, Strasbourg University Hospital, Strasbourg, France.,Equipe d'accueil 3072, University of Strasbourg, Strasbourg, France
| | | | - Philip C Calder
- Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, United Kingdom.,National Institute for Health Research Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust and University of Southampton, Southampton, United Kingdom
| | - Anne Charloux
- Department of Chest Disease, Strasbourg University Hospital, Strasbourg, France.,Equipe d'accueil 3072, University of Strasbourg, Strasbourg, France
| | - Nelly Frossard
- UMR 7200 CNRS/Université de Strasbourg, Laboratoire d'Innovation Thérapeutique and LabEx MEDALIS, Faculté de Pharmacie, Strasbourg, France
| | - Johan Garssen
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, Netherlands.,Nutricia Research, Utrecht, Netherlands
| | - Oliver Haworth
- Biochemical Pharmacology, William Harvey Research Institute, Bart's School of Medicine and Queen Mary University of London, London, United Kingdom
| | - Ksenia Dilevskaya
- Division of Pharmacology, Faculty of Science, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, Netherlands
| | - Francesca Levi-Schaffer
- Pharmacology and Experimental Therapeutics Unit, Faculty of Medicine, School of Pharmacy, Institute for Drug Research, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Evelyne Lonsdorfer
- Department of Chest Disease, Strasbourg University Hospital, Strasbourg, France.,Equipe d'accueil 3072, University of Strasbourg, Strasbourg, France
| | - Marca Wauben
- Department of Biochemistry & Cell Biology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Aletta D Kraneveld
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, Netherlands.,Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Anje A Te Velde
- Amsterdam UMC, Tytgat Institute for Liver and Intestinal Research, University of Amsterdam, AGEM, Amsterdam, Netherlands
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Kalenyak K, Heilmann RM, van de Lest CHA, Brouwers JF, Burgener IA. Comparison of the systemic phospholipid profile in dogs diagnosed with idiopathic inflammatory bowel disease or food-responsive diarrhea before and after treatment. PLoS One 2019; 14:e0215435. [PMID: 30990833 PMCID: PMC6467395 DOI: 10.1371/journal.pone.0215435] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Accepted: 04/02/2019] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Inflammatory bowel disease (IBD) and food-responsive diarrhea (FRD) are common chronic enteropathies in dogs, of which the exact pathogenesis has not been fully understood. In people dyslipidemia has been reported in patients with IBD, and potential therapeutic benefits of polyunsaturated fatty acids (PUFA) in the treatment of IBD have been investigated. Studies on the phospholipid profile in dogs with IBD and FRD are still lacking. AIM To investigate the systemic phospholipid profile of dogs with IBD or FRD and to evaluate possible differences in phospholipids before and after treatment. METHODS The phospholipids in whole blood and EDTA plasma of 32 dogs diagnosed with either IBD (n = 16) or FRD (n = 16) were analyzed by hydrophilic interaction liquid chromatography (HILIC) prior to and after initiation of treatment, which included an elimination diet enriched with PUFAs. RESULTS A clear separation of the phospholipids between whole blood and plasma was demonstrated on principal component analysis plots. In addition to the type of specimen, treatment and disease severity were the most significant factors determining the variance of the phospholipid profile. An increase in lysolipids was observed after treatment. The phosphatidylcholine (PC) species changed from PC 38:4 before treatment to mainly lysophosphatidylcholine 18:0 after treatment. Furthermore, several differences in the abundance of individual phospholipids were identified between dogs with IBD and dogs with FRD and between treatment statuses using random forest analysis. CONCLUSION Significant variances were identified in the phospholipid profiles of dogs with IBD and FRD. These were particularly determined by type of specimen used, disease severity and treatment status. After treatment, a shift of phospholipid species towards lysophosphatidylcholine 18:0 was observed. Future studies should further investigate the role of lipids in the pathophysiology of IBD and FRD as well as their potential therapeutic benefits.
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Affiliation(s)
- Katja Kalenyak
- Department for Small Animals, Veterinary Teaching Hospital, College of Veterinary Medicine, University of Leipzig, Leipzig, Saxony, Germany
- * E-mail:
| | - Romy M. Heilmann
- Department for Small Animals, Veterinary Teaching Hospital, College of Veterinary Medicine, University of Leipzig, Leipzig, Saxony, Germany
| | - Chris H. A. van de Lest
- Faculty of Veterinary Medicine, Department of Biochemistry & Cell Biology, Lipidomics Facility, Utrecht University, CM Utrecht, Netherlands
| | - Jos F. Brouwers
- Faculty of Veterinary Medicine, Department of Biochemistry & Cell Biology, Lipidomics Facility, Utrecht University, CM Utrecht, Netherlands
| | - Iwan A. Burgener
- Division of Small Animal Internal Medicine, Department for Companion Animals and Horses, Vetmeduni Vienna, Vienna, Austria
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Scoville EA, Allaman MM, Adams DW, Motley AK, Peyton SC, Ferguson SL, Horst SN, Williams CS, Beaulieu DB, Schwartz DA, Wilson KT, Coburn LA. Serum Polyunsaturated Fatty Acids Correlate with Serum Cytokines and Clinical Disease Activity in Crohn's Disease. Sci Rep 2019; 9:2882. [PMID: 30814550 PMCID: PMC6393448 DOI: 10.1038/s41598-019-39232-z] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 01/18/2019] [Indexed: 12/19/2022] Open
Abstract
Crohn’s disease (CD) has been associated with an increased consumption of n-6 polyunsaturated fatty acid (PUFA), while greater intake of n-3 PUFA has been associated with a reduced risk. We sought to investigate serum fatty acid composition in CD, and associations of fatty acids with disease activity, cytokines, and adipokines. Serum was prospectively collected from 116 CD subjects and 27 non-IBD controls. Clinical disease activity was assessed by the Harvey Bradshaw Index (HBI). Serum fatty acids were measured by gas chromatography. Serum cytokines and adipokines were measured by Luminex assay. Dietary histories were obtained from a subset of patients. Nine serum cytokines and adipokines were increased in CD versus controls. CD subjects had increased percentage serum monounsaturated fatty acids (MUFA), dihomo-gamma linolenic acid (DGLA), eicosapentaenoic acid (EPA), docosapentaenoic acid (DPA), and oleic acid, but decreased arachidonic acid (AA) versus controls. The % total n-3 fatty acids and % EPA directly correlated with pro-inflammatory cytokine levels and HBI, whereas the % total n-6 fatty acids were inversely correlated with pro-inflammatory cytokine levels and HBI. CD subjects had increased caloric intake versus controls, but no alterations in total fat or PUFA intake. We found differences in serum fatty acids, most notably PUFA, in CD that correlated both with clinical disease activity and inflammatory cytokines. Our findings indicate that altered fatty acid metabolism or utilization is present in CD and is related to disease activity.
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Affiliation(s)
- Elizabeth A Scoville
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Margaret M Allaman
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Dawn W Adams
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.,Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN, USA
| | - Amy K Motley
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Shannon C Peyton
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Sarah L Ferguson
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Sara N Horst
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Christopher S Williams
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.,Vanderbilt Center for Mucosal Inflammation and Cancer, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.,Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN, USA.,Vanderbilt Center for Stem Cell Biology, Vanderbilt University Medical Center, Nashville, TN, USA.,Vanderbilt Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Dawn B Beaulieu
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - David A Schwartz
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Keith T Wilson
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.,Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA.,Vanderbilt Center for Mucosal Inflammation and Cancer, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.,Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN, USA.,Vanderbilt Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Lori A Coburn
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA. .,Vanderbilt Center for Mucosal Inflammation and Cancer, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA. .,Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN, USA.
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Cellular and Molecular Therapeutic Targets in Inflammatory Bowel Disease-Focusing on Intestinal Barrier Function. Cells 2019; 8:cells8020193. [PMID: 30813280 PMCID: PMC6407030 DOI: 10.3390/cells8020193] [Citation(s) in RCA: 104] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 02/18/2019] [Accepted: 02/21/2019] [Indexed: 02/06/2023] Open
Abstract
The human gut relies on several cellular and molecular mechanisms to allow for an intact and dynamical intestinal barrier. Normally, only small amounts of luminal content pass the mucosa, however, if the control is broken it can lead to enhanced passage, which might damage the mucosa, leading to pathological conditions, such as inflammatory bowel disease (IBD). It is well established that genetic, environmental, and immunological factors all contribute in the pathogenesis of IBD, and a disturbed intestinal barrier function has become a hallmark of the disease. Genetical studies support the involvement of intestinal barrier as several susceptibility genes for IBD encode proteins with key functions in gut barrier and homeostasis. IBD patients are associated with loss in bacterial diversity and shifts in the microbiota, with a possible link to local inflammation. Furthermore, alterations of immune cells and several neuro-immune signaling pathways in the lamina propria have been demonstrated. An inappropriate immune activation might lead to mucosal inflammation, with elevated secretion of pro-inflammatory cytokines that can affect the epithelium and promote a leakier barrier. This review will focus on the main cells and molecular mechanisms in IBD and how these can be targeted in order to improve intestinal barrier function and reduce inflammation.
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Diab J, Al-Mahdi R, Gouveia-Figueira S, Hansen T, Jensen E, Goll R, Moritz T, Florholmen J, Forsdahl G. A Quantitative Analysis of Colonic Mucosal Oxylipins and Endocannabinoids in Treatment-Naïve and Deep Remission Ulcerative Colitis Patients and the Potential Link With Cytokine Gene Expression. Inflamm Bowel Dis 2019; 25:490-497. [PMID: 30476077 PMCID: PMC6383859 DOI: 10.1093/ibd/izy349] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND The bioactive metabolites of omega 3 and omega 6 polyunsaturated fatty acids (ω-3 and ω-6) are known as oxylipins and endocannabinoids (eCBs). These lipid metabolites are involved in prompting and resolving the inflammatory response that leads to the onset of inflammatory bowel disease (IBD). This study aims to quantify these bioactive lipids in the colonic mucosa and to evaluate the potential link to cytokine gene expression during inflammatory events in ulcerative colitis (UC). METHODS Colon biopsies were taken from 15 treatment-naïve UC patients, 5 deep remission UC patients, and 10 healthy controls. Thirty-five oxylipins and 11 eCBs were quantified by means of ultra-high-performance liquid chromatography coupled with tandem mass spectrometry. Levels of mRNA for 10 cytokines were measured by reverse transcription polymerase chain reaction. RESULTS Levels of ω-6-related oxylipins were significantly elevated in treatment-naïve patients with respect to controls, whereas the levels of ω-3 eCBs were lower. 15S-Hydroxy-eicosatrienoic acid (15S-HETrE) was significantly upregulated in UC deep remission patients compared with controls. All investigated cytokines had significantly higher mRNA levels in the inflamed mucosa of treatment-naïve UC patients. Cytokine gene expression was positively correlated with several ω-6 arachidonic acid-related oxylipins, whereas negative correlation was found with lipoxin, prostacyclin, and the eCBs. CONCLUSIONS Increased levels of ω-6-related oxylipins and decreased levels of ω-3-related eCBs are associated with the debut of UC. This highlights the altered balance between pro- and anti-inflammatory lipid mediators in IBD and suggests potential targets for intervention.
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Affiliation(s)
- Joseph Diab
- Natural Products and Medicinal Chemistry Research Group, Department of Pharmacy, Faculty of Health Sciences, University of Tromsø–The Arctic University of Norway, Tromsø, Norway
| | - Rania Al-Mahdi
- Research Group of Gastroenterology and Nutrition, Department of Clinical Medicine, Faculty of Health Sciences, University of Tromsø–The Arctic University of Norway, Tromsø, Norway
| | | | - Terkel Hansen
- Natural Products and Medicinal Chemistry Research Group, Department of Pharmacy, Faculty of Health Sciences, University of Tromsø–The Arctic University of Norway, Tromsø, Norway
| | - Einar Jensen
- Natural Products and Medicinal Chemistry Research Group, Department of Pharmacy, Faculty of Health Sciences, University of Tromsø–The Arctic University of Norway, Tromsø, Norway
| | - Rasmus Goll
- Research Group of Gastroenterology and Nutrition, Department of Clinical Medicine, Faculty of Health Sciences, University of Tromsø–The Arctic University of Norway, Tromsø, Norway
| | - Thomas Moritz
- Swedish Metabolomics Center, Swedish University of Agricultural Sciences, Umeå, Sweden
| | - Jon Florholmen
- Research Group of Gastroenterology and Nutrition, Department of Clinical Medicine, Faculty of Health Sciences, University of Tromsø–The Arctic University of Norway, Tromsø, Norway
| | - Guro Forsdahl
- Natural Products and Medicinal Chemistry Research Group, Department of Pharmacy, Faculty of Health Sciences, University of Tromsø–The Arctic University of Norway, Tromsø, Norway
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Schniers A, Goll R, Pasing Y, Sørbye SW, Florholmen J, Hansen T. Ulcerative colitis: functional analysis of the in-depth proteome. Clin Proteomics 2019; 16:4. [PMID: 30718987 PMCID: PMC6350310 DOI: 10.1186/s12014-019-9224-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Accepted: 01/22/2019] [Indexed: 12/19/2022] Open
Abstract
Background Ulcerative colitis (UC) is one major form of inflammatory bowel disease. The cause and the pathophysiology of the disease are not fully understood and we therefor aim in this study to identify important pathophysiological features in UC from proteomics data. Methods Colon mucosa biopsies from inflamed tissue of untreated UC patients at diagnosis and from healthy controls were obtained during colonoscopy. Quantitative protein data was acquired by bottom-up proteomics and furthermore processed with MaxQuant. The quantitative proteome data was analyzed with Perseus and enrichment data was analyzed by ClueGO for Cytoscape. Results The generated proteome dataset is to-date the deepest from colon mucosa biopsies with 8562 identified proteins whereof 6818 were quantified in > 70% of the samples. We report abundance differences between UC and healthy controls and the respective p values for all quantified proteins in the supporting information. From this data set enrichment analysis revealed decreased protein abundances in UC for metallothioneins, PPAR-inducible proteins, fibrillar collagens and proteins involved in bile acid transport as well as metabolic functions of nutrients, energy, steroids, xenobiotics and carbonate. On the other hand increased abundances were enriched in immune response and protein processing in the endoplasmic reticulum, e.g. unfolded protein response and signal peptidase complex proteins. Conclusions This explorative study describes the most affected functions in UC tissue. Our results complemented previous findings substantially. Decreased abundances of signal peptidase complex proteins in UC are a new discovery. Electronic supplementary material The online version of this article (10.1186/s12014-019-9224-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Armin Schniers
- 1Natural Products and Medicinal Chemistry Research Group, Department of Pharmacy, Faculty of Health Sciences, UiT The Arctic University of Norway, 9037 Tromsø, Norway
| | - Rasmus Goll
- 2Department of Medical Gastroenterology, University Hospital of North Norway, Tromsø, Norway.,3Gastroenterology and Nutrition Research Group, Department of Clinical Medicine, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø, Norway
| | - Yvonne Pasing
- 4Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
| | | | - Jon Florholmen
- 2Department of Medical Gastroenterology, University Hospital of North Norway, Tromsø, Norway.,3Gastroenterology and Nutrition Research Group, Department of Clinical Medicine, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø, Norway
| | - Terkel Hansen
- 1Natural Products and Medicinal Chemistry Research Group, Department of Pharmacy, Faculty of Health Sciences, UiT The Arctic University of Norway, 9037 Tromsø, Norway
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Wang Q, Yan SF, Hao Y, Jin SW. Specialized Pro-resolving Mediators Regulate Alveolar Fluid Clearance during Acute Respiratory Distress Syndrome. Chin Med J (Engl) 2018; 131:982-989. [PMID: 29664060 PMCID: PMC5912066 DOI: 10.4103/0366-6999.229890] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Objective Acute respiratory distress syndrome (ARDS) is an acute and lethal clinical syndrome that is characterized by the injury of alveolar epithelium, which impairs active fluid transport in the lung, and impedes the reabsorption of edema fluid from the alveolar space. This review aimed to discuss the role of pro-resolving mediators on the regulation of alveolar fluid clearance (AFC) in ARDS. Data Sources Articles published up to September 2017 were selected from the PubMed, with the keywords of "alveolar fluid clearance" or "lung edema" or "acute lung injury" or "acute respiratory distress syndrome", and "specialized pro-resolving mediators" or "lipoxin" or "resolvin" or "protectin" or "maresin" or "alveolar epithelial cells" or "aspirin-triggered lipid mediators" or "carbon monoxide and heme oxygenase" or "annexin A1". Study Selection We included all relevant articles published up to September 2017, with no limitation of study design. Results Specialized pro-resolving mediators (SPMs), as the proinflammatory mediators, not only upregulated epithelial sodium channel, Na,K-ATPase, cystic fibrosis transmembrane conductance regulator (CFTR), and aquaporins levels, but also improved Na,K-ATPase activity to promote AFC in ARDS. In addition to the direct effects on ion channels and pumps of the alveolar epithelium, the SPMs also inhibited the inflammatory cytokine expression and improved the alveolar epithelial cell repair to enhance the AFC in ARDS. Conclusions The present review discusses a novel mechanism for pulmonary edema fluid reabsorption. SPMs might provide new opportunities to design "reabsorption-targeted" therapies with high degrees of precision in controlling ALI/ARDS.
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Affiliation(s)
- Qian Wang
- Department of Anesthesia and Critical Care, Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Song-Fan Yan
- Department of Anesthesia and Critical Care, Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Yu Hao
- Department of Anesthesia and Critical Care, Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Sheng-Wei Jin
- Department of Anesthesia and Critical Care, Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
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Sagini K, Costanzi E, Emiliani C, Buratta S, Urbanelli L. Extracellular Vesicles as Conveyors of Membrane-Derived Bioactive Lipids in Immune System. Int J Mol Sci 2018; 19:ijms19041227. [PMID: 29670015 PMCID: PMC5979532 DOI: 10.3390/ijms19041227] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 04/06/2018] [Accepted: 04/14/2018] [Indexed: 12/11/2022] Open
Abstract
Over the last 20 years, extracellular vesicles (EVs) have been established as an additional way to transmit signals outside the cell. They are membrane-surrounded structures of nanometric size that can either originate from the membrane invagination of multivesicular bodies of the late endosomal compartment (exosomes) or bud from the plasma membrane (microvesicles). They contain proteins, lipids, and nucleic acids—namely miRNA, but also mRNA and lncRNA—which are derived from the parental cell, and have been retrieved in every fluid of the body. As carriers of antigens, either alone or in association with major histocompatibility complex (MHC) class II and class I molecules, their immunomodulatory properties have been extensively investigated. Moreover, recent studies have shown that EVs may carry and deliver membrane-derived bioactive lipids that play an important function in the immune system and related pathologies, such as prostaglandins, leukotrienes, specialized pro-resolving mediators, and lysophospholipids. EVs protect bioactive lipids from degradation and play a role in the transcellular synthesis of prostaglandins and leukotrienes. Here, we summarized the role of EVs in the regulation of immune response, specifically focusing our attention on the emerging role of EVs as carriers of bioactive lipids, which is important for immune system function.
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Affiliation(s)
- Krizia Sagini
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via del Giochetto, 06123 Perugia, Italy.
| | - Eva Costanzi
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via del Giochetto, 06123 Perugia, Italy.
| | - Carla Emiliani
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via del Giochetto, 06123 Perugia, Italy.
- Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN), University of Perugia, Via del Giochetto, 06123 Perugia, Italy.
| | - Sandra Buratta
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via del Giochetto, 06123 Perugia, Italy.
| | - Lorena Urbanelli
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via del Giochetto, 06123 Perugia, Italy.
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Zhu H, Wang H, Wang S, Tu Z, Zhang L, Wang X, Hou Y, Wang C, Chen J, Liu Y. Flaxseed Oil Attenuates Intestinal Damage and Inflammation by Regulating Necroptosis and TLR4/NOD Signaling Pathways Following Lipopolysaccharide Challenge in a Piglet Model. Mol Nutr Food Res 2018; 62:e1700814. [PMID: 29510469 DOI: 10.1002/mnfr.201700814] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 02/19/2018] [Indexed: 12/29/2022]
Abstract
SCOPE Flaxseed oil is a rich source of α-linolenic acid (ALA), which is the precursor of the long-chain n-3 polyunsaturated fatty acids (PUFAs), including docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA). This study investigates the protective effect of flaxseed oil against intestinal injury induced by lipopolysaccharide (LPS). MATERIALS AND RESULTS Twenty-four weaned pigs were used in a 2 × 2 factorial experiment with dietary treatment (5% corn oil vs 5% flaxseed oil) and LPS challenge (saline vs LPS). On day 21 of the experiment, pigs were administrated with LPS or saline. At 2 h and 4 h post-administration, blood samples were collected. After the blood harvest at 4 h, all piglets were slaughtered and intestinal samples were collected. Flaxseed oil supplementation led to the enrichment of ALA, EPA, and total n-3 PUFAs in intestine. Flaxseed oil improved intestinal morphology, jejunal lactase activity, and claudin-1 protein expression. Flaxseed oil downregulated the mRNA expression of intestinal necroptotic signals. Flaxseed oil also downregulated the mRNA expression of intestinal toll-like receptors 4 (TLR4) and its downstream signals myeloid differentiation factor 88 (MyD88), nuclear factor kappa B (NF-κB), and nucleotide-binding oligomerization domain proteins 1, 2 (NOD1, NOD2) and its adapter molecule, receptor-interacting protein kinase 2 (RIPK2). CONCLUSION These results suggest that dietary addition of flaxseed oil enhances intestinal integrity and barrier function, which is involved in modulating necroptosis and TLR4/NOD signaling pathways.
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Affiliation(s)
- Huiling Zhu
- Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan, China
| | - Haibo Wang
- Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan, China
| | - Shuhui Wang
- Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan, China
| | - Zhixiao Tu
- Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan, China
| | - Lin Zhang
- Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan, China
| | - Xiuying Wang
- Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan, China
| | - Yongqing Hou
- Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan, China
| | - Chunwei Wang
- Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan, China
| | - Jie Chen
- Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan, China
| | - Yulan Liu
- Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan, China
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