1
|
Shu W, Wang Y, Deji Z, Li C, Chen C, Ding W, Du P, Wang X. Infliximab modifies CD74-mediated lymphatic abnormalities and adipose tissue alterations in creeping fat of Crohn's disease. Inflamm Res 2024; 73:1157-1172. [PMID: 38713235 DOI: 10.1007/s00011-024-01889-2] [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: 01/31/2024] [Revised: 03/31/2024] [Accepted: 04/29/2024] [Indexed: 05/08/2024] Open
Abstract
BACKGROUND Lymphatic abnormalities are essential for pathophysiologic changes of creeping fat (CrF) in Crohn's disease (CD). Anti-tumor necrosis factor (TNF) therapy has been proved to alleviate CrF lesions, however, whether it achieves these by remodeling lymphatics is unknown. METHODS CD74 expression was detected in CrF and uninvolved mesentery of CD patients. Lymphatic functions in vitro were evaluated and lymphatic endothelium barrier were checked by transendothelial electrical resistance (TEER) and FITC-Dextran permeability. Protein level of tight junction and signaling pathways were detected by western blotting. RESULTS CD74 was upregulated in LECs of CrF and positively correlated with TNF-α synthesis. This was suppressed by IFX administration. In vitro, TNF-α stimulated LECs to express CD74 through NF-κB signaling pathway, and this was rescued by IFX. CD74 downregulation suppressed the abilities of LECs in proliferation, migration and tube formation. Interaction of CD74-MIF impaired LECs' barrier via reducing tight junction proteins in an ERK1/2-dependent manner, which was reversed by CD74 downregulation. Consistently, the CD patients receiving IFX therapy displayed decreased lymphangiogenesis and improved mesenteric lymphatic endothelium barrier, companied with reduced adipocyte size and adipokine levels in CrF. CONCLUSIONS Anti-TNF therapy could modify pathological changes in CrF by alleviating CD74-mediated lymphatic abnormalities.
Collapse
Affiliation(s)
- Weigang Shu
- Department of Gastroenterology, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China
| | - Yongheng Wang
- Department of Gastroenterology, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China
| | - Zhuoma Deji
- Department of Gastroenterology, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China
| | - Chuanding Li
- Department of Gastroenterology, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China
| | - Chunqiu Chen
- Center for Difficult and Complicated Abdominal Surgery, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China
| | - Wenjun Ding
- Department of Colorectal Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200092, China
| | - Peng Du
- Department of Colorectal Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200092, China
| | - Xiaolei Wang
- Department of Gastroenterology, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China.
| |
Collapse
|
2
|
Zuo L, Geng Z, Song X, Li J, Wang Y, Zhang X, Ge S, Wang L, Liu G, Zhang L, Xu M, Zhao Y, Shen L, Ge Y, Wu R, Hu J. Browning of Mesenteric White Adipose Tissue in Crohn's Disease: A New Pathological Change and Therapeutic Target. J Crohns Colitis 2023; 17:1179-1192. [PMID: 36932969 DOI: 10.1093/ecco-jcc/jjad046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Indexed: 03/19/2023]
Abstract
BACKROUND Hypertrophic mesenteric adipose tissue [htMAT] is a distinctive hallmark of Crohn's disease [CD], and it affects enteritis via inflammatory adipokine secretion by dysfunctional white adipocytes. White adipocytes can become beige adipocytes, which are characterized by active lipid consumption and favourable endocrine function, via white adipocyte browning. Our study aimed to determine whether white adipocyte browning occurs in htMAT and its role in CD. METHODS White adipocyte browning was examined in MAT samples from CD patients and controls. Human MAT explants and primary mesenteric adipocytes were cultured for in vitro experiments. Mice with 2,4,6-trinitrobenzenesulphonic acid solution [TNBS]-induced colitis were used for in vivo studies. A β3-adrenergic receptor agonist [CL316,243] was used to induce white adipocyte browning, and IL-4/STAT6 signalling was analysed to explore the mechanism underlying the anti-inflammatory activity of beige adipocytes. RESULTS White adipocyte browning was observed in htMAT from CD patients, as shown by the appearance of uncoupling protein 1 [UCP1]-positive multilocular [beige] adipocytes with lipid-depleting activity and anti-inflammatory endocrine profiles. Both human MAT and primary mesenteric adipocytes from CD patients and controls could be induced to undergo browning, which increased their lipid-depleting and anti-inflammatory activities in vitro. Inducing MAT browning ameliorated mesenteric hypertrophy and inflammation as well as colitis in TNBS-treated mice in vivo. The anti-inflammatory activity of beige adipocytes was at least partially related to STAT6 signalling activation via the autocrine and paracrine effects of IL-4. CONCLUSION White adipocyte browning is a newly identified pathological change in htMAT of CD patients and a possible therapeutic target.
Collapse
Affiliation(s)
- Lugen Zuo
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China
| | - Zhijun Geng
- Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Xue Song
- Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Jing Li
- Department of Clinical Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Yueyue Wang
- Department of Clinical Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Xiaofeng Zhang
- Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Sitang Ge
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China
| | - Lian Wang
- Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Guangyong Liu
- Anhui Key Laboratory of Tissue Transplantation, Bengbu Medical College, Bengbu, China
| | - Lele Zhang
- Anhui Key Laboratory of Tissue Transplantation, Bengbu Medical College, Bengbu, China
| | - Mengyu Xu
- Anhui Key Laboratory of Tissue Transplantation, Bengbu Medical College, Bengbu, China
| | - Yajing Zhao
- Anhui Key Laboratory of Tissue Transplantation, Bengbu Medical College, Bengbu, China
| | - Li Shen
- Anhui Key Laboratory of Tissue Transplantation, Bengbu Medical College, Bengbu, China
| | - Yuanyuan Ge
- Department of Colorectal Surgery, The Third Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Rong Wu
- Department of General Surgery, Southeast University Zhongda Hospital, Nanjing, China
| | - Jianguo Hu
- Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
- Department of Clinical Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
- Anhui Key Laboratory of Tissue Transplantation, Bengbu Medical College, Bengbu, China
| |
Collapse
|
3
|
Yin Y, Xie Y, Ge W, Li Y. Creeping fat formation and interaction with intestinal disease in Crohn's disease. United European Gastroenterol J 2022; 10:1077-1084. [PMID: 36507842 PMCID: PMC9752293 DOI: 10.1002/ueg2.12349] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 11/30/2022] [Indexed: 12/15/2022] Open
Abstract
Creeping fat (CrF), also known as fat wrapping, is a significant disease characteristic of Crohn's disease (CD). The transmural inflammation impairs intestinal integrity and facilitates bacteria translocation, aggravating immune response. CrF is a rich source of pro-inflammatory and pro-fibrotic cytokines with complex immune microenvironment. The inflamed and stricturing intestine is often wrapped by CrF, and CrF is associated with greater severity of CD. The large amount of innate and adaptive immune cells as well as adipocytes in CrF promote fibrosis in the affected intestine by secreting large amount of pro-fibrotic cytokines, adipokines, growth factors and fatty acids. CrF is a potential therapeutic target for CD treatment and a promising bio-marker for predicting response to drug therapy. This review aims to summarize and update the clinical manifestation and application of CrF and the underlying molecular mechanism involved in the pathogenesis of intestinal inflammation and fibrosis in CD.
Collapse
Affiliation(s)
- Yi Yin
- Department of General SurgeryNanjing Drum Tower HospitalThe Affiliated Hospital of Nanjing University Medical SchoolNanjingJiangsuChina
| | - Ying Xie
- Department of General SurgeryNanjing Drum Tower HospitalThe Affiliated Hospital of Nanjing University Medical SchoolNanjingJiangsuChina
| | - Wei Ge
- Department of General SurgeryNanjing Drum Tower HospitalThe Affiliated Hospital of Nanjing University Medical SchoolNanjingJiangsuChina
| | - Yi Li
- Department of General SurgeryJinling HospitalMedical School of Nanjing UniversityNanjingChina
| |
Collapse
|
4
|
Boronat-Toscano A, Monfort-Ferré D, Menacho M, Caro A, Bosch R, Espina B, Algaba-Chueca F, Saera-Vila A, Moliné A, Marti M, Espin E, Millan M, Serena C. Anti-TNF Therapies Suppress Adipose Tissue Inflammation in Crohn’s Disease. Int J Mol Sci 2022; 23:ijms231911170. [PMID: 36232469 PMCID: PMC9570367 DOI: 10.3390/ijms231911170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 09/19/2022] [Accepted: 09/19/2022] [Indexed: 11/16/2022] Open
Abstract
Anti-TNF biologics have been shown to markedly improve the quality of life for patients with Crohn’s disease (CD), yet one-third of patients fail to benefit from this treatment. Patients with CD develop a characteristic wrapping of visceral adipose tissue (VAT) in the inflamed intestinal area, termed creeping fat, and it is known that adipose tissue expansion influences the efficacy of anti-TNF drugs. We questioned whether anti-TNF therapies impact the creeping fat in CD, which might affect the outcome of the disease. Adipose tissue biopsies were obtained from a cohort of 14 patients with CD that received anti-TNF drugs and from 29 non-anti-TNF-treated patients (control group) matched by sex, age, and body mass index undergoing surgical interventions for symptomatic complications. We found that anti-TNF therapies restored adipose tissue morphology and suppressed immune cell infiltration in the creeping fat. Additionally, anti-TNF treatments appeared to markedly improve the pro-inflammatory phenotype of adipose-tissue macrophages and adipose-tissue-derived stem cells. Our study provides evidence that anti-TNF medications influence immune cells and progenitor cells in the creeping of patients with CD, suppressing inflammation. We propose that perilesional VAT should be considered when administering anti-TNF therapy in patients with CD.
Collapse
Affiliation(s)
- Albert Boronat-Toscano
- Institut d’Investigació Sanitària Pere Virgili, Hospital Universitari Joan XXIII, Universitat Rovira i Virgili, 43007 Tarragona, Spain
| | - Diandra Monfort-Ferré
- Institut d’Investigació Sanitària Pere Virgili, Hospital Universitari Joan XXIII, Universitat Rovira i Virgili, 43007 Tarragona, Spain
| | - Margarita Menacho
- Digestive Unit, Hospital Universitari Joan XXIII, 43007 Tarragona, Spain
| | - Aleidis Caro
- Colorectal Surgery Unit, Hospital Universitari Joan XXIII, 43007 Tarragona, Spain
| | - Ramon Bosch
- Department of Pathology, Oncological Pathology and Bioinformatics Research Group, Hospital de Tortosa Verge de la Cinta—IISPV, 43500 Tortosa, Spain
| | - Beatriz Espina
- Colorectal Surgery Unit, Hospital Universitari Joan XXIII, 43007 Tarragona, Spain
| | - Francisco Algaba-Chueca
- Institut d’Investigació Sanitària Pere Virgili, Hospital Universitari Joan XXIII, Universitat Rovira i Virgili, 43007 Tarragona, Spain
| | | | - Alicia Moliné
- Digestive Unit, Hospital Universitari Joan XXIII, 43007 Tarragona, Spain
| | - Marc Marti
- Colorectal Surgery Unit, General Surgery Service, Hospital Valle de Hebron, Universitat Autonoma de Barcelona, 08035 Barcelona, Spain
| | - Eloy Espin
- Colorectal Surgery Unit, General Surgery Service, Hospital Valle de Hebron, Universitat Autonoma de Barcelona, 08035 Barcelona, Spain
| | - Mónica Millan
- Colorectal Surgery Unit, General Surgery Service, Hospital La Fe, 46026 Valencia, Spain
| | - Carolina Serena
- Institut d’Investigació Sanitària Pere Virgili, Hospital Universitari Joan XXIII, Universitat Rovira i Virgili, 43007 Tarragona, Spain
- Correspondence: or
| |
Collapse
|
5
|
Suau R, Pardina E, Domènech E, Lorén V, Manyé J. The Complex Relationship Between Microbiota, Immune Response and Creeping Fat in Crohn's Disease. J Crohns Colitis 2022; 16:472-489. [PMID: 34528668 DOI: 10.1093/ecco-jcc/jjab159] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In the last decade, there has been growing interest in the pathological involvement of hypertrophic mesenteric fat attached to the serosa of the inflamed intestinal segments involved in Crohn's disease [CD], known as creeping fat. In spite of its protective nature, creeping fat harbours an aberrant inflammatory activity which, in an already inflamed intestine, may explain why creeping fat is associated with a greater severity of CD. The transmural inflammation of CD facilitates the interaction of mesenteric fat with translocated intestinal microorganisms, contributing to activation of the immune response. This may be not the only way in which microorganisms alter the homeostasis of this fatty tissue: intestinal dysbiosis may also impair xenobiotic metabolism. All these CD-related alterations have a functional impact on nuclear receptors such as the farnesoid X receptor or the peroxisome proliferator-activated receptor γ, which are implicated in regulation of the immune response, adipogenesis and the maintenance of barrier function, as well as on creeping fat production of inflammatory-associated cells such as adipokines. The dysfunction of creeping fat worsens the inflammatory course of CD and may favour intestinal fibrosis and fistulizing complications. However, our current knowledge of the pathophysiology and pathogenic role of creeping fat is controversial and a better understanding might provide new therapeutic targets for CD. Here we aim to review and update the key cellular and molecular alterations involved in this inflammatory process that link the pathological components of CD with the development of creeping fat.
Collapse
Affiliation(s)
- Roger Suau
- IBD Research Group, 'Germans Trias i Pujol' Research Institute (IGTP), Badalona (Catalonia), Spain.,Centro de Investigación Biomédica en Red (CIBER), Madrid, Spain
| | - Eva Pardina
- Biochemistry and Molecular Biomedicine Department, University of Barcelona, Barcelona (Catalonia), Spain
| | - Eugeni Domènech
- IBD Research Group, 'Germans Trias i Pujol' Research Institute (IGTP), Badalona (Catalonia), Spain.,Centro de Investigación Biomédica en Red (CIBER), Madrid, Spain.,Gastroenterology Department, 'Germans Trias i Pujol' University Hospital, Badalona (Catalonia), Spain
| | - Violeta Lorén
- IBD Research Group, 'Germans Trias i Pujol' Research Institute (IGTP), Badalona (Catalonia), Spain.,Centro de Investigación Biomédica en Red (CIBER), Madrid, Spain
| | - Josep Manyé
- IBD Research Group, 'Germans Trias i Pujol' Research Institute (IGTP), Badalona (Catalonia), Spain.,Centro de Investigación Biomédica en Red (CIBER), Madrid, Spain
| |
Collapse
|
6
|
Exploring brain insulin resistance in adults with bipolar depression using extracellular vesicles of neuronal origin. J Psychiatr Res 2021; 133:82-92. [PMID: 33316649 PMCID: PMC7855678 DOI: 10.1016/j.jpsychires.2020.12.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 11/20/2020] [Accepted: 12/01/2020] [Indexed: 12/13/2022]
Abstract
Accumulating evidence suggests that disrupted insulin signaling is involved in bipolar disorder (BD) pathogenesis. Herein, we aimed to directly explore the potential role of neuronal insulin signaling using an innovative technique based on biomarkers derived from plasma extracellular vesicles enriched for neuronal origin (NEVs). We leveraged plasma samples from a randomized, double-blind, placebo-controlled, 12-week clinical trial evaluating infliximab as a treatment of bipolar depression. We isolated NEVs using immunoprecipitation against neuronal marker L1CAM from samples collected at baseline and weeks 2, 6 and 12 (endpoint) and measured NEV biomarkers using immunoassays. We assessed neuronal insulin signaling at its first node (IRS-1) and along the canonical (Akt, GSK-3β, p70S6K) and alternative (ERK1/2, JNK and p38-MAPK) pathways. A subset of participants (n = 27) also underwent whole-brain magnetic resonance imaging (MRI) at baseline and endpoint. Pre-treatment, NEV biomarkers of insulin signaling were independently associated with cognitive function and MRI measures (i.e. hippocampal and ventromedial prefrontal cortex [vmPFC] volumes). In fact, the association between IRS-1 phosphorylation at serine site 312 (pS312-IRS-1), an indicator of insulin resistance, and cognitive dysfunction was mediated by vmPFC volume. In the longitudinal analysis, patients treated with infliximab, a tumor necrosis factor-alpha antagonist with known insulin sensitizing properties, compared to those treated with placebo, had augmented phosphorylation of proteins from the alternative pathway. Infliximab responders had significant increases in phosphorylated JNK levels, relative to infliximab non-responders and placebo responders. In addition, treatment with infliximab resulted in increase in MRI measures of brain volume; treatment-related changes in the dorsolateral prefrontal cortex volume were mediated by changes in biomarkers from the insulin alternative pathway. In conclusion, our findings support the idea that brain insulin signaling is a target for further mechanistic and therapeutic investigations.
Collapse
|
7
|
Abdelhamid YA, Elyamany MF, Al-Shorbagy MY, Badary OA. Effects of TNF-α antagonist infliximab on fructose-induced metabolic syndrome in rats. Hum Exp Toxicol 2020; 40:801-811. [PMID: 33118400 DOI: 10.1177/0960327120969960] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Public health issues have been raised regarding fructose toxicity and its serious metabolic disorders. Deleterious effects of high fructose intake on insulin sensitivity, body weight, lipid homeostasis have been identified. The new millennium has witnessed the emergence of a modern epidemic, the metabolic syndrome (MS), in approximately 25% of the world's adult population. The current study aimed to investigate the effect of the TNF-α antagonist infliximab on fructose-induced MS in rats. Rats were administered fructose (10%) in drinking water for 12 weeks to induce the experimental MS model. infliximab (5 mg/kg) was injected once weekly intraperitoneally starting on the 13th week for 4 weeks. Increase in body weight, blood glucose level, serum triglycerides (TGs), adiponectin level and blood pressure were present in MS rats. They also prompted increases in serum of leptin, TNF-α, and malondialdehyde (MDA) levels. Treatment with infliximab did not affect body weight, hyperglycemia or hypertension, but decreased serum TGs and increased serum HDL-c levels. Infliximab also decreased adiponectin levels. Surprisingly, infliximab increased MDA above its value in the MS group. These results reflect the fact that infliximab affects the manifestations of MS in rats. Though infliximab reduced TGs, increased HDL-c levels, reversed adiponectin resistance occurred by fructose, the drug failed to combat MS-mediated hyperglycemia, hypertension, and elevated MDA above the insult.
Collapse
Affiliation(s)
| | - Mohammed F Elyamany
- Pharmacology & Toxicology Department, 110154Faculty of Pharmacy, Cairo University, Giza, Egypt
| | - Muhammad Y Al-Shorbagy
- Pharmacology & Toxicology Department, 110154Faculty of Pharmacy, Cairo University, Giza, Egypt.,Pharmacology & Toxicology Department, School of Pharmacy, Newgiza University, Egypt
| | - Osama A Badary
- Clinical Pharmacy Department, Faculty of Pharmacy, British University in Egypt, Cairo, Egypt
| |
Collapse
|
8
|
Decara J, Rivera P, López-Gambero AJ, Serrano A, Pavón FJ, Baixeras E, Rodríguez de Fonseca F, Suárez J. Peroxisome Proliferator-Activated Receptors: Experimental Targeting for the Treatment of Inflammatory Bowel Diseases. Front Pharmacol 2020; 11:730. [PMID: 32536865 PMCID: PMC7266982 DOI: 10.3389/fphar.2020.00730] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 05/01/2020] [Indexed: 12/17/2022] Open
Abstract
The peroxisome proliferator-activated receptors (PPARs) are a group of nuclear receptor proteins that promote ligand-dependent transcription of target genes that regulate energy production, lipid metabolism, and inflammation. The PPAR superfamily comprises three subtypes, PPARα, PPARγ, and PPARβ/δ, with differential tissue distributions. In addition to their different roles in the regulation of energy balance and carbohydrate and lipid metabolism, an emerging function of PPARs includes normal homeostasis of intestinal tissue. PPARα activation represses NF-κB signaling, which decreases the inflammatory cytokine production by different cell types, while PPARγ ligands can inhibit activation of macrophages and the production of inflammatory cytokines, such as tumor necrosis factor-alpha (TNF-α), interleukin (IL)-6, and Il-1β. In this regard, the anti-inflammatory responses induced by PPAR activation might restore physiopathological imbalances associated with inflammatory bowel diseases (IBD). Thus, PPARs and their ligands have important therapeutic potential. This review briefly discusses the roles of PPARs in the physiopathology and therapies of the most important IBDs, ulcerative colitis (UC), and Crohn's disease (CD), as well some new experimental compounds with PPAR activity as promising drugs for IBD treatment.
Collapse
Affiliation(s)
- Juan Decara
- UGC Salud Mental, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Regional Universitario de Málaga, Universidad de Málaga, Málaga, Spain
| | - Patricia Rivera
- Departamento de Endocrinología, Fundación Investigación Biomédica del Hospital Infantil Universitario Niño Jesús, Madrid, Spain
| | - Antonio Jesús López-Gambero
- UGC Salud Mental, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Regional Universitario de Málaga, Universidad de Málaga, Málaga, Spain
| | - Antonia Serrano
- UGC Salud Mental, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Regional Universitario de Málaga, Universidad de Málaga, Málaga, Spain
| | - Francisco Javier Pavón
- UGC Salud Mental, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Regional Universitario de Málaga, Universidad de Málaga, Málaga, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV) and UGC del Corazón, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Universitario Virgen de la Victoria, Universidad de Málaga, Málaga, Spain
| | - Elena Baixeras
- Departamento de Bioquímica y Biología Molecular, Facultad de Medicina, Universidad de Málaga, IBIMA, Málaga, Spain
| | - Fernando Rodríguez de Fonseca
- UGC Salud Mental, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Regional Universitario de Málaga, Universidad de Málaga, Málaga, Spain
| | - Juan Suárez
- UGC Salud Mental, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Regional Universitario de Málaga, Universidad de Málaga, Málaga, Spain
| |
Collapse
|
9
|
Buanaim RP, Pereira JA, Campos FG, Kotze PG, Goto EFK, Mendonça RLS, Kanno DT, Martinez CAR. Effects of anti-TNF-α in experimental diversion colitis. Acta Cir Bras 2019; 34:e201901004. [PMID: 31851212 PMCID: PMC6912843 DOI: 10.1590/s0102-865020190100000004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 09/23/2019] [Indexed: 01/16/2023] Open
Abstract
Purpose: To evaluate the effects of infliximab on the inflammation of the colonic
mucosa devoid from fecal stream. Methods: Twenty-four rats were submitted to a Hartmann's procedure. They remained for
12 weeks with the fecal derivation to development of diversion colitis on
excluded colorectal stump. After this period, they were divided into 3
groups: one group received intervention with saline (2.0 mL / week), other
group infliximab at doses of 5 mg/kg/week and the other 10 mg/kg/week for
five consecutively weeks. Concluded the intervention period, the animals
were euthanized to remove colon segments with and without fecal stream.
Colitis was diagnosed by histological analysis and the degree of
inflammation by validated score. The neutrophilic infiltrate was evaluated
by tissue expression of myeloperoxidase identified by immunohistochemical.
The tissue content of myeloperoxidase was measured by computer-assisted
image analysis. Results: The inflammatory score was high in colonic segments without fecal stream. The
intervention with infliximab reduced the inflammatory score in excluded
colonic segments. The content of myeloperoxidase was reduced in colonic
segments of animals treated with infliximab mainly in high
concentrations. Conclusion: Intervention with infliximab reduced the inflammation and the neutrophil
infiltrate in colonic segments devoid of the fecal stream.
Collapse
Affiliation(s)
- Ronaldo Parisi Buanaim
- Fellow Master degree, Postgraduate Program in Health Science, Universidade São Francisco (USF). Assistant Professor, Faculty of Medicine, USF, Bragança Paulista-SP, Brazil. Technical procedures, acquisition and interpretation of data, manuscript preparation
| | - José Aires Pereira
- PhD, Assistant Professor, Division of Pathology, Faculty of Medicine, USF, Bragança Paulista-SP, Brazil. Histopathological examinations, acquisition and interpretation of data
| | - Fabio Guilherme Campos
- PhD, Associate Professor, Department of Gastroenterology, Faculty of Medicine, Universidade de São Paulo (USP), Brazil. Analysis and interpretation of data, critical revision
| | - Paulo Gustavo Kotze
- PhD, Assistant Professor, Colorectal Surgery Unit, Cajuru University Hospital, Universidade Católica do Paraná (PUCPR), Curitiba-PR, Brazil. Analysis and interpretation of data, English language revision, critical revision
| | - Eduardo Felipe Kim Goto
- Graduate student, Faculty of Medicine, USF, Bragança Paulista-SP, Brazil. Technical procedures, acquisition of data
| | - Roberta Laís Silva Mendonça
- Fellow Master degree, Postgraduate Program in Health of Sciences, USF, Bragança Paulista-SP, Brazil. Technical procedures, Histopathological examinations
| | - Danilo Toshio Kanno
- Fellow PhD degree, Postgraduate Program in Health Science, USF. Assistant Professor, Division of Surgery, Faculty of Medicine, USF, Bragança Paulista-SP, Brazil. Technical procedures, acquisition of data, manuscript preparation
| | - Carlos Augusto Real Martinez
- PhD, Associate Professor, Postgraduate Program in Health Sciences, USF, Bragança Paulista-SP, and Department of Surgery, Universidade Estadual de Campinas (UNICAMP), Campinas-SP, Brazil. Conception and design of the study, statistics analysis, manuscript preparation and writing, critical revision
| |
Collapse
|
10
|
Giles JT, Ferrante AW, Broderick R, Zartoshti A, Rose J, Downer K, Zhang HZ, Winchester RJ. Adipose Tissue Macrophages in Rheumatoid Arthritis: Prevalence, Disease-Related Indicators, and Associations With Cardiometabolic Risk Factors. Arthritis Care Res (Hoboken) 2018; 70:175-184. [PMID: 28388816 DOI: 10.1002/acr.23253] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 04/04/2017] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Adipose tissue macrophages (ATMs) are a potent source of inflammatory cytokines, with profound effects on adipose tissue function, yet their potential role in rheumatoid arthritis (RA) pathobiology is largely unstudied. METHODS Periumbilical subcutaneous adipose tissue was obtained from 36 RA patients and 22 non-RA controls frequency matched on demographics and body mass index. Samples were stained for the macrophage marker CD68, and the average proportions of ATMs, crown-like structures (periadipocyte aggregates of 3 or more ATMs), and fibrosis were compared between groups. RESULTS The adjusted proportion of ATMs among all nucleated cells was 76% higher in RA than in non-RA samples (37.7 versus 21.3%, respectively; P < 0.001), and the adjusted average number of crown-like structures was more than 1.5-fold higher in the RA group than in controls (0.58 versus 0.23 crown-like structure/high-power field, respectively; P = 0.001). ATMs were significantly more abundant in early RA and in those with anti-cyclic citrullinated peptide seropositivity. Users of methotrexate, leflunomide, and tumor necrosis factor inhibitors had a significantly lower proportion of ATMs compared with nonusers. Crown-like structures were significantly higher in patients with rheumatoid factor seropositivity and in those with C-reactive protein levels ≥10 mg/liter, and significantly lower among those treated with statins. Linear ATMs were significantly associated with whole-body insulin resistance, but not with serum lipids. CONCLUSIONS ATMs and crown-like structures were more abundant in RA patients and were associated with systemic inflammation, autoimmunity, and whole-body insulin resistance, suggesting possible contributions to the RA disease process. Lower levels of ATMs and crown-like structures associated with specific RA treatments suggest that adipose tissue inflammation may be ameliorated by immunomodulation.
Collapse
Affiliation(s)
- Jon T Giles
- Columbia University College of Physicians and Surgeons, New York, New York
| | - Antony W Ferrante
- Columbia University College of Physicians and Surgeons, New York, New York
| | - Rachel Broderick
- Columbia University College of Physicians and Surgeons, New York, New York
| | - Afshin Zartoshti
- Columbia University College of Physicians and Surgeons, New York, New York
| | - Janine Rose
- Columbia University College of Physicians and Surgeons, New York, New York
| | - Kendall Downer
- Columbia University College of Physicians and Surgeons, New York, New York
| | - Hui-Zhu Zhang
- Columbia University College of Physicians and Surgeons, New York, New York
| | | |
Collapse
|
11
|
Coffey JC, O'Leary DP. The mesentery: structure, function, and role in disease. Lancet Gastroenterol Hepatol 2016; 1:238-247. [PMID: 28404096 DOI: 10.1016/s2468-1253(16)30026-7] [Citation(s) in RCA: 166] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 07/05/2016] [Accepted: 07/06/2016] [Indexed: 12/22/2022]
Abstract
Systematic study of the mesentery is now possible because of clarification of its structure. Although this area of science is in an early phase, important advances have already been made and opportunities uncovered. For example, distinctive anatomical and functional features have been revealed that justify designation of the mesentery as an organ. Accordingly, the mesentery should be subjected to the same investigatory focus that is applied to other organs and systems. In this Review, we summarise the findings of scientific investigations of the mesentery so far and explore its role in human disease. We aim to provide a platform from which to direct future scientific investigation of the human mesentery in health and disease.
Collapse
Affiliation(s)
- J Calvin Coffey
- Graduate Entry Medical School, 4i Centre for Interventions in Infection, Inflammation and Immunity, University Hospital Limerick, University of Limerick, Limerick, Ireland.
| | - D Peter O'Leary
- Graduate Entry Medical School, 4i Centre for Interventions in Infection, Inflammation and Immunity, University Hospital Limerick, University of Limerick, Limerick, Ireland
| |
Collapse
|
12
|
Karrasch T, Schaeffler A. Adipokines and the role of visceral adipose tissue in inflammatory bowel disease. Ann Gastroenterol 2016; 29:424-438. [PMID: 27708507 PMCID: PMC5049548 DOI: 10.20524/aog.2016.0077] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 07/22/2016] [Indexed: 12/20/2022] Open
Abstract
Recently, adipocytes have been recognized as actively participating in local and systemic immune responses via the secretion of peptides detectable in relevant levels in the systemic circulation, the so-called "adipo(cyto)kines". Multiple studies appearing within the last 10-15 years have focused on the possible impact of adipose tissue depots on inflammatory bowel disease (IBD). Consequently, various hypotheses regarding the role of different adipokines in inflammatory diseases in general and in intestinal inflammatory processes in particular have been developed and have been further refined in recent years. After a focused summary of the data reported concerning the impact of visceral adipose tissue on IBD, such as Crohn's disease and ulcerative colitis, our review focuses on recent developments indicating that adipocytes as part of the innate immune system actively participate in antimicrobial host defenses in the context of intestinal bacterial translocation, which are of utmost importance for the homeostasis of the whole organism. Modulators of adipose tissue function and regulators of adipokine secretion, as well as modifiers of adipocytic pattern recognition molecules, might represent future potential drug targets in IBD.
Collapse
Affiliation(s)
- Thomas Karrasch
- Department of Internal Medicine III, Giessen University Hospital, Germany
| | - Andreas Schaeffler
- Department of Internal Medicine III, Giessen University Hospital, Germany
| |
Collapse
|
13
|
Nacci C, Leo V, De Benedictis L, Potenza MA, Sgarra L, De Salvia MA, Quon MJ, Montagnani M. Infliximab therapy restores adiponectin expression in perivascular adipose tissue and improves endothelial nitric oxide-mediated vasodilation in mice with type 1 diabetes. Vascul Pharmacol 2016; 87:83-91. [PMID: 27565410 DOI: 10.1016/j.vph.2016.08.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Revised: 07/07/2016] [Accepted: 08/21/2016] [Indexed: 12/15/2022]
Abstract
Increased TNFα-mediated JNK signaling in the perivascular adipose tissue (PVAT) may contribute to the pathogenesis of vascular complications in T1DM by reducing adiponectin (Ad) synthesis and therefore impairing Ad-mediated activity in the contiguous blood vessel system. We evaluated whether in vivo treatment with the TNFα blocking antibody infliximab normalized expression of Ad and Ad receptors in various fat depots, and whether this effect correlated with improved endothelial activity and vasodilator function in streptozotocin (STZ)-induced diabetic mice. STZ mice were studied at 1 and 2weeks after diabetes onset, and compared to age-matched infliximab-treated diabetic (I-STZ) and control animals (CTRL) (n=10 each group). In STZ mice, activation of pro-inflammatory JNK signaling was faster in PVAT (P<0.01) than in visceral (VAT), epididymal (EAT) and subcutaneous (SAT) adipose depots, and associated with decreased Ad synthesis and dysregulated AdipoR1/R2 levels. In parallel, activation of JNK in aortic endothelial cells and mesenteric arteries was associated with decreased expression/phosphorylation of eNOS and impaired ACh-mediated vasodilation (P<0.05 vs. CTRL). Treatment with infliximab abrogated JNK activation, ameliorated Ad protein expression, and normalized expression of both AdipoR1 and AdipoR2 in PVAT, concomitantly improving eNOS expression and vessel relaxation in mesenteric arteries from I-STZ mice (P<0.01 vs. STZ). These observations underline the early susceptibility of PVAT to activation of pro-inflammatory JNK signaling, and highlight its potential importance in early vascular changes of T1DM. Further elucidation of the role of PVAT in cardiovascular complications may allow for the design of novel therapeutic strategies directly addressing PVAT pathophysiology.
Collapse
Affiliation(s)
- Carmela Nacci
- Department of Biomedical Sciences and Human Oncology, Pharmacology Section, Medical School, University of Bari "Aldo Moro", Bari, Italy
| | - Valentina Leo
- Department of Biomedical Sciences and Human Oncology, Pharmacology Section, Medical School, University of Bari "Aldo Moro", Bari, Italy
| | - Leonarda De Benedictis
- Department of Biomedical Sciences and Human Oncology, Pharmacology Section, Medical School, University of Bari "Aldo Moro", Bari, Italy
| | - Maria A Potenza
- Department of Biomedical Sciences and Human Oncology, Pharmacology Section, Medical School, University of Bari "Aldo Moro", Bari, Italy
| | - Luca Sgarra
- Department of Biomedical Sciences and Human Oncology, Pharmacology Section, Medical School, University of Bari "Aldo Moro", Bari, Italy
| | - Maria A De Salvia
- Department of Biomedical Sciences and Human Oncology, Pharmacology Section, Medical School, University of Bari "Aldo Moro", Bari, Italy
| | - Michael J Quon
- Department of Biomedical Sciences and Human Oncology, Pharmacology Section, Medical School, University of Bari "Aldo Moro", Bari, Italy
| | - Monica Montagnani
- Department of Biomedical Sciences and Human Oncology, Pharmacology Section, Medical School, University of Bari "Aldo Moro", Bari, Italy.
| |
Collapse
|
14
|
Abstract
PURPOSE OF REVIEW This article assesses the role of the mesentery in Crohn's disease. RECENT FINDINGS The mesentery is centrally positioned both anatomically and physiologically. Overlapping mesenteric and submucosal mesenchymal contributions are important in the pathobiology of Crohn's disease. Mesenteric contributions explain the topographic distribution of Crohn's disease in general and mucosal disease in particular. Operative strategies that are mesenteric based (i.e. mesocolic excision) may reduce rates of postoperative recurrence. SUMMARY The net effect of mesenteric events in Crohn's disease is pathologic. This can be targeted by operative means. VIDEO ABSTRACT http://links.lww.com/COG/A18.
Collapse
|
15
|
Li Y, Zhu W, Zuo L, Shen B. The Role of the Mesentery in Crohn's Disease: The Contributions of Nerves, Vessels, Lymphatics, and Fat to the Pathogenesis and Disease Course. Inflamm Bowel Dis 2016; 22:1483-95. [PMID: 27167572 DOI: 10.1097/mib.0000000000000791] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Crohn's disease (CD) is a complex gastrointestinal disorder involving multiple levels of cross talk between the immunological, neural, vascular, and endocrine systems. The current dominant theory in CD is based on the unidirectional axis of dysbiosis-innate immunity-adaptive immunity-mesentery-body system. Emerging clinical evidence strongly suggests that the axis be bidirectional. The morphologic and/or functional abnormalities in the mesenteric structures likely contribute to the disease progression of CD, to a less extent the disease initiation. In addition to adipocytes, mesentery contains nerves, blood vessels, lymphatics, stromal cells, and fibroblasts. By the secretion of adipokines that have endocrine functions, the mesenteric fat tissue exerts its activity in immunomodulation mainly through response to afferent signals, neuropeptides, and functional cytokines. Mesenteric nerves are involved in the pathogenesis and prognosis of CD mainly through neuropeptides. In addition to angiogenesis observed in CD, lymphatic obstruction, remodeling, and impaired contraction maybe a cause and consequence of CD. Lymphangiogenesis and angiogenesis play a concomitant role in the progress of chronic intestinal inflammation. Finally, the interaction between neuropeptides, adipokines, and vascular and lymphatic endothelia leads to adipose tissue remodeling, which makes the mesentery an active participator, not a bystander, in the disease initiation and precipitation CD. The identification of the role of mesentery, including the structure and function of mesenteric nerves, vessels, lymphatics, and fat, in the intestinal inflammation in CD has important implications in understanding its pathogenesis and clinical management.
Collapse
Affiliation(s)
- Yi Li
- *Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China; and †Center for Inflammatory Bowel Disease, Digestive Disease Institute, The Cleveland Clinic Foundation, Cleveland, Ohio
| | | | | | | |
Collapse
|
16
|
Hasdemir B, Mhaske P, Paruthiyil S, Garnett EA, Heyman MB, Matloubian M, Bhargava A. Sex- and corticotropin-releasing factor receptor 2- dependent actions of urocortin 1 during inflammation. Am J Physiol Regul Integr Comp Physiol 2016; 310:R1244-57. [PMID: 27053649 DOI: 10.1152/ajpregu.00445.2015] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 03/25/2016] [Indexed: 12/20/2022]
Abstract
We investigated whether corticotropin-releasing factor receptor 2 (CRF2) and its high-affinity agonist urocortin 1 (Ucn1) mediate sex-specific signaling and immune responses. Intrarectal trinitrobenzene sulfonic acid was used to induce experimental colitis in wild-type, CRF2 knockout (CRF2KO), and heterozygous (CRF2Ht) mice of both sexes. Changes in plasma extravasation, organ weight, survival, immune cell numbers, inflammatory cytokines, and the MAPK signaling pathway were assessed. Stored intestinal biopsies from patients with Crohn's disease (CD) and age- and sex-matched individuals without inflammatory bowel disease (IBD) were examined by immunofluorescence and confocal microscopy to characterize Ucn1 and CRF receptor expression. CRF2Ht mice of both sexes showed decreased survival during colitis compared with other genotypes. Ucn1 improved survival in male mice alone. Ucn1 restored colon length and spleen and adrenal weight and decreased colonic TNF-α, IL-6, and IL-1β levels in male CRF2Ht mice alone. CRF2Ht mice of both sexes showed decreased phosphorylation of MAPK p38 and heat shock protein 27 (Hsp27) levels. Ucn1 restored p-Hsp27 levels in male CRF2Ht mice alone. Expression of the chaperone protein Hsp90 decreased during colitis, except in male CRF2Ht mice. Taken together, our data indicate that sex shows significant interaction with genotype and Ucn1 during colitis. Human duodenal and colonic biopsies revealed that sex-specific differences exist in levels of CRF receptors and Ucn1 expression in patients with CD compared with the matched non-IBD subjects. To conclude, Ucn1 mediates sex-specific immune and cellular signaling responses via CRF2, emphasizing the need for inclusion of females in preclinical studies.
Collapse
Affiliation(s)
- Burcu Hasdemir
- Department of Surgery, University of California, San Francisco; The Osher Center for Integrative Medicine, University of California, San Francisco
| | - Pallavi Mhaske
- Department of Surgery, University of California, San Francisco
| | | | | | - Melvin B Heyman
- Department of Pediatrics, University of California, San Francisco
| | - Mehrdad Matloubian
- Division of Rheumatology and Rosalind Russell and Ephraim P. Engleman Arthritis Research Center, University of California, San Francisco
| | - Aditi Bhargava
- Department of Surgery, University of California, San Francisco; The Osher Center for Integrative Medicine, University of California, San Francisco;
| |
Collapse
|
17
|
Telmisartan attenuates the inflamed mesenteric adipose tissue in spontaneous colitis by mechanisms involving regulation of neurotensin/microRNA-155 pathway. Biochem Pharmacol 2015; 93:461-9. [DOI: 10.1016/j.bcp.2014.12.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Revised: 12/25/2014] [Accepted: 12/30/2014] [Indexed: 02/07/2023]
|
18
|
Abstract
PURPOSE OF REVIEW This review summarizes current knowledge on the contribution of mesenteric adipose tissue in intestinal inflammation. We will describe the cellular and humoral characteristics of creeping fat, their potential impact for Crohn's disease and propose a working model for the critical interplay between the creeping fat and the inflamed intestine. RECENT FINDINGS Creeping fat can be distinguished from healthy adipose tissue by its distinctively small adipocytes, by a specific microenvironment defined by high levels of adipokines and by a dominant immune cell infiltration. In Crohn's disease transmural inflammation facilitates increased bacterial translocation into the creeping fat. Translocalizing antigens can directly activate (pre)adipocytes via innate receptors. Adipocyte-derived mediators modulate phenotype and function of innate and adaptive immune cells. Activated (pre)adipocytes and adipokine-modulated immune cells might support a degree of inflammatory activation within the creeping fat that allows competent immune defense against exogenous factors while preventing systemic inflammation. SUMMARY Fat tissue as an active organ in health and disease has been ignored for too long. The last few years of research provided evidence for the complex metabolic and immunological functions of adipose tissue. On the basis of the available data, creeping fat in Crohn's disease exerts a protective function by a localized anti-inflammatory effect, thus preventing a systemic inflammatory response.
Collapse
|
19
|
Feng Y, Li Y, Mei S, Zhang L, Gong J, Gu L, Zhang W, Zhu W, Li N, Li J. Exclusive enteral nutrition ameliorates mesenteric adipose tissue alterations in patients with active Crohn's disease. Clin Nutr 2014; 33:850-8. [DOI: 10.1016/j.clnu.2013.10.009] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Revised: 09/21/2013] [Accepted: 10/12/2013] [Indexed: 12/13/2022]
|
20
|
Papaconstantinou I, Zeglinas C, Gazouli M, Nastos K, Yiallourou A, Lykoudis P, Evangelou K, Papalois A, Papaioannou M, Vlachogiannakos J, Tzathas C. Effect of infliximab on the healing of intestinal anastomosis. An experimental study in rats. Int J Surg 2014; 12:969-75. [PMID: 25091401 DOI: 10.1016/j.ijsu.2014.07.271] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2014] [Revised: 07/14/2014] [Accepted: 07/28/2014] [Indexed: 12/14/2022]
|
21
|
Jang SE, Hyam SR, Jeong JJ, Han MJ, Kim DH. Penta-O-galloyl-β-D-glucose ameliorates inflammation by inhibiting MyD88/NF-κB and MyD88/MAPK signalling pathways. Br J Pharmacol 2014; 170:1078-91. [PMID: 23941302 DOI: 10.1111/bph.12333] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2013] [Revised: 08/06/2013] [Accepted: 08/11/2013] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND AND PURPOSE The gallnut of Rhus chinensis MILL and its main constituent penta-O-galloyl-β-D-glucose (PGG) inhibited NF-κB activation in LPS-stimulated peritoneal and colonic macrophages. Here we have investigated PGG mechanisms underlying anti-inflammatory effects of PGG in vitro and in vivo. EXPERIMENTAL APPROACH Male C57BL/6 mice (18-22 g, 6 weeks old) were used to prepare peritoneal and colonic macrophages and for the induction of colitis by intrarectal administration of 2,3,4-trinitrobenzene sulphonic acid (TNBS). A range of inflammatory markers and transcription factors were evaluated by elisa, immunoblotting, flow cytometry and confocal microscopy. KEY RESULTS Expression of Toll-like receptor (TLR)-4 or Lipopolysaccharide (LPS) binding to TLR-4 in LPS-stimulated peritoneal macrophages was not affected by PGG. However PGG inhibited binding of an anti-MyD88 antibody to peritoneal macrophages, but did not reduce binding of anti-IL-1 receptor-associated kinase (IRAK1) and IRAK4 antibodies to the macrophages with or without transfection with MyD88 siRNA. PGG potently reduced the activation of IRAK1, NF-κB, and MAPKs in LPS- or pepetidoglycan-stimulated peritoneal and colonic macrophages. PGG suppressed IL-1β, TNF-α and IL-6 in LPS-stimulated peritoneal macrophages, while increasing expression of the anti-inflammatorycytokine IL-10. Oral administration of PGG inhibited colon shortening and myeloperoxidase activity in mice with TNBS-induced colitis, along with reducing NF-κB activation and IL-1β, TNF-α, and IL-6 levels, whereas it increased IL-10. CONCLUSIONS AND IMPLICATIONS PGG reduced activation of NF-κB and MAPK signalling pathways by directly interacting with the MyD88 adaptor protein. PGG may ameliorate inflammatory diseases such as colitis.
Collapse
Affiliation(s)
- Se-Eun Jang
- Department of Life and Nanopharmaceutical Sciences, Kyung Hee University, Seoul, Korea; Department of Food and Nutrition, Kyung Hee University, Seoul, Korea
| | | | | | | | | |
Collapse
|
22
|
De AK, Sana S, Datta S, Mukherjee A. Protective efficacy of ursodeoxycholic acid nanoparticles in animal model of inflammatory bowel disease. J Microencapsul 2014; 31:725-37. [PMID: 24963957 DOI: 10.3109/02652048.2014.918666] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
UNLABELLED Abstract Context: Ursodeoxycholic acid (UDCA) exerts dose-dependent chemoprevention in colonic inflammation. Polycationic UDCA nanoparticles (UNPs) are envisaged for solubility enhancement and site directed drug delivery. OBJECTIVE The objective was to study the ameliorative efficacy of UNPs through localized delivery of the drug. METHODS UNPs were prepared through nanoprecipitation technique. Particle size, morphology, in vitro drug release and in vivo protective efficacy in inflammatory bowel disease (IBD) of these nanoparticles were studied. RESULTS AND DISCUSSION The average particle size was around 100 nm, and the average drug encapsulation was about 99%. In vitro drug release study shows optimal drug release in simulated colonic fluid. The lowering of tissue nitric oxide, malondialdehyde, myeloperoxidase and histology of the colon tissue supported the protective efficacy of the nanoparticles. CONCLUSION This study presents the improved efficacy of UNPs in animal model of IBD due to complete release of drug at the desired site of action.
Collapse
Affiliation(s)
- Amit Kumar De
- Department of Chemical Technology, Division of Pharmaceuticals and Fine Chemical Technology, University College of Science and Technology, University of Calcutta , Kolkata , West Bengal , India
| | | | | | | |
Collapse
|
23
|
Gotardo &EMF, Ribeiro GDA, Clemente TRL, Moscato CH, Tomé RBG, Rocha T, Pedrazzoli Jr J, Ribeiro ML, Gambero A. Hepcidin expression in colon during trinitrobenzene sulfonic acid-induced colitis in rats. World J Gastroenterol 2014; 20:4345-4352. [PMID: 24764672 PMCID: PMC3989970 DOI: 10.3748/wjg.v20.i15.4345] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Revised: 12/18/2013] [Accepted: 01/20/2014] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate hepcidin expression, interleukin-6 (IL-6) production and iron levels in the rat colon in the presence of trinitrobenzene sulfonic acid (TNBS)-induced colitis.
METHODS: In rats, we evaluated the severity of colitis induced by repeated TNBS administration using macroscopic and microscopic scoring systems and myeloperoxidase activity measurements. The colonic levels of hepcidin, tumor necrosis factor alpha (TNF-α), IL-10 and IL-6 were measured by Enzyme-Linked Immunosorbent Assay, and hepcidin-25 expression and iron deposition were analyzed by immunohistochemistry and the Prussian blue reaction, respectively. Stat-3 phosphorylation was assessed by Western blot analysis. Hematological parameters, iron and transferrin levels, and transferrin saturation were also measured. Additionally, the ability of iron, pathogen-derived molecules and IL-6 to induce hepcidin expression in HT-29 cells was evaluated.
RESULTS: Repeated TNBS administration to rats resulted in macroscopically and microscopically detectable colon lesions and elevated colonic myeloperoxidase activity. Hepcidin-25 protein levels were increased in colonic surface epithelia in colitic rats (10.2 ± 4.0 pg/mg protein vs 71.0 ± 8.4 pg/mg protein, P < 0.01). Elevated IL-6 levels (8.2 ± 1.7 pg/mg protein vs 14.7 ± 0.7 pg/mg protein, P < 0.05), TNF-α levels (1.8 ± 1.2 pg/mg protein vs 7.4 ± 2.1 pg/mg protein, P < 0.05) and Stat-3 phosphorylation were also observed. Systemic alterations in iron homeostasis, hepcidin levels and anemia were not detected in colitic rats. Iron deposition in the colon was only observed during colitis. Hepcidin gene expression was increased in HT-29 cells after IL-6 and lipopolysaccharide [a toll-like receptor 4 (TLR-4) ligand] treatment. Deferoxamine, ferric citrate and peptidoglycan (a TLR-2 ligand) were unable to alter the in vitro expression of hepcidin in HT-29 cells.
CONCLUSION: Colitis increased local hepcidin-25 expression, which was associated with the IL-6/Stat-3 signaling pathway. An increase in local iron sequestration was also observed, but additional studies are needed to determine whether this sequestration is a defensive or pathological response to intestinal inflammation.
Collapse
|