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Cristóbal JI, Duque FJ, Usón-Casaús J, Martínez MS, Míguez MP, Pérez-Merino EM. Oxidative stress in dogs with chronic inflammatory enteropathy treated with allogeneic mesenchymal stem cells. Vet Res Commun 2024; 48:901-910. [PMID: 38012473 PMCID: PMC10998773 DOI: 10.1007/s11259-023-10265-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 11/22/2023] [Indexed: 11/29/2023]
Abstract
The search for new biomarkers in patients with chronic inflammatory enteropathy (CIE) is ongoing in the human and veterinary medicine fields. Oxidative stress biomarkers (malondialdehyde [MDA], reduced glutathione [GSH], and albumin) have been studied in humans with chronic enteropathies, but among them, only albumin has been studied in dogs with CIE. Moreover, the effect of mesenchymal stem cell (MSCs) treatment with or without prednisone on these parameters has never been studied in dogs with CIE. These parameters were compared between healthy dogs (n = 12) and dogs with CIE, and before and 1, 3, 6, and 12 months after the treatment with MSCs alone (n = 9) or together with prednisone (n = 11). The relationship between the Canine Inflammatory Bowel Disease Activity Index (CIBDAI) and oxidative stress was evaluated. Albumin was the only parameter that significantly differed between dogs with CIE and healthy dogs (p = 0,037). Differences were observed only in albumin values after combined treatment with MSCs and prednisone. No differences were observed in MDA and GSH after treatment with MSCs with or without prednisone. Albumin could help stage canine CIE, as well as its prognosis, as has already been demonstrated, although it is essential to evaluate this parameter for its antioxidant capacity, and therefore it could be a good biomarker of oxidative stress in this pathology. However, the treatment with MSCs seems unable to modify any of the analyzed oxidative stress parameters.
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Affiliation(s)
- José Ignacio Cristóbal
- Departamento de Medicina Animal, Unidad de Cirugía, Facultad de Veterinaria, Universidad de Extremadura, Veterinaria UEx. Avenida de La Universidad S/N, 10003, Cáceres, Spain
| | - Francisco Javier Duque
- Departamento de Medicina Animal, Unidad de Cirugía, Facultad de Veterinaria, Universidad de Extremadura, Veterinaria UEx. Avenida de La Universidad S/N, 10003, Cáceres, Spain
| | - Jesús Usón-Casaús
- Departamento de Medicina Animal, Unidad de Cirugía, Facultad de Veterinaria, Universidad de Extremadura, Veterinaria UEx. Avenida de La Universidad S/N, 10003, Cáceres, Spain
| | - María Salomé Martínez
- Unidad de Toxicología, Facultad de Veterinaria, Universidad de Extremadura, 10003, Cáceres, Spain
| | - María Prado Míguez
- Unidad de Toxicología, Facultad de Veterinaria, Universidad de Extremadura, 10003, Cáceres, Spain
| | - Eva María Pérez-Merino
- Departamento de Medicina Animal, Unidad de Cirugía, Facultad de Veterinaria, Universidad de Extremadura, Veterinaria UEx. Avenida de La Universidad S/N, 10003, Cáceres, Spain.
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Han H, Ke L, Xu W, Wang H, Zhou J, Rao P. Incidental nanoparticles in black tea alleviate DSS-induced ulcerative colitis in BALB/c mice. Food Funct 2023; 14:8420-8430. [PMID: 37615587 DOI: 10.1039/d3fo00641g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
As the dominant herbal drink consumed worldwide, black tea exhibits various health promoting benefits including amelioration of inflammatory bowel diseases. Despite extensive studies on the tea's components, little is known about the bioactivities of nanoparticles (NPs) which were incidentally assembled in the tea infusion and represent the major components. This study investigated the alleviative effects of black tea infusion, the isolated black tea NPs, and a mixture of caffeine, epigallocatechin-3-gallate, gallic acid and epicatechin gallate on dextran sodium sulfate (DSS)-induced ulcerative colitis. The results showed that both the black tea infusion and the NPs significantly alleviated colitis, suppressed the mRNA levels of pro-inflammatory cytokines TNF-α, IL-6, and IL-1β, and suppressed the DSS-induced loss of cell-cell junction proteins (e.g., E-cadherin, ZO-1, and claudin-1) and increase of p-STAT3. The mixture of four tea components, which is the analogue of bioactive payloads carried by the NPs, was much less effective than the tea infusion and NPs. It shows that the NPs elevate the efficiency of polyphenols and caffeine in black tea in restoring the intercellular connection in the intestine, inhibiting mucosal inflammation, and alleviating ulcerative colitis. This work may inspire the development of tea-based therapeutics for treating inflammatory bowel diseases and have wide influences on value-added processing, quality evaluation, functionalization, and innovation of tea and other plant-based beverages.
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Affiliation(s)
- Huan Han
- School of Chemical Engineering and Technology, Tianjin University, China
- Zhe Jiang Institute of Tianjin University, Shaoxing, China
- Food Nutrition Science Centre, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310012, China
| | - Lijing Ke
- Food Nutrition Science Centre, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310012, China
- School of Food Science and Nutrition, University of Leeds, Leeds, LS2 9JT, UK.
| | - Wei Xu
- Zhe Jiang Institute of Tianjin University, Shaoxing, China
- Food Nutrition Science Centre, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310012, China
| | - Huiqin Wang
- Food Nutrition Science Centre, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310012, China
| | - Jianwu Zhou
- Food Nutrition Science Centre, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310012, China
| | - Pingfan Rao
- Food Nutrition Science Centre, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310012, China
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Azcutia V, Kelm M, Fink D, Cummings RD, Nusrat A, Parkos CA, Brazil JC. Sialylation regulates neutrophil transepithelial migration, CD11b/CD18 activation, and intestinal mucosal inflammatory function. JCI Insight 2023; 8:e167151. [PMID: 36719745 PMCID: PMC10077474 DOI: 10.1172/jci.insight.167151] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 01/25/2023] [Indexed: 02/01/2023] Open
Abstract
Polymorphonuclear neutrophils (PMNs) play a critical role in clearing invading microbes and promoting tissue repair following infection/injury. However, dysregulated PMN trafficking and associated tissue damage is pathognomonic of numerous inflammatory mucosal diseases. The final step in PMN influx into mucosal lined organs (including the lungs, kidneys, skin, and gut) involves transepithelial migration (TEpM). The β2-integrin CD11b/CD18 plays an important role in mediating PMN intestinal trafficking, with recent studies highlighting that terminal fucose and GlcNAc glycans on CD11b/CD18 can be targeted to reduce TEpM. However, the role of the most abundant terminal glycan, sialic acid (Sia), in regulating PMN epithelial influx and mucosal inflammatory function is not well understood. Here we demonstrate that inhibiting sialidase-mediated removal of α2-3-linked Sia from CD11b/CD18 inhibits PMN migration across intestinal epithelium in vitro and in vivo. Sialylation was also found to regulate critical PMN inflammatory effector functions, including degranulation and superoxide release. Finally, we demonstrate that sialidase inhibition reduces bacterial peptide-mediated CD11b/CD18 activation in PMN and blocks downstream intracellular signaling mediated by spleen tyrosine kinase (Syk) and p38 MAPK. These findings suggest that sialylated glycans on CD11b/CD18 represent potentially novel targets for ameliorating PMN-mediated tissue destruction in inflammatory mucosal diseases.
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Affiliation(s)
- Veronica Azcutia
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Matthias Kelm
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Dylan Fink
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Richard D. Cummings
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Asma Nusrat
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Charles A. Parkos
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Jennifer C. Brazil
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
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Effects of ShenLing BaiZhu San Supplementation on Gut Microbiota and Oxidative Stress in Rats with Ulcerative Colitis. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:3960989. [PMID: 34630607 PMCID: PMC8500740 DOI: 10.1155/2021/3960989] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 09/15/2021] [Indexed: 01/22/2023]
Abstract
The aim of this study was to evaluate the effect of gut microbiota and antioxidation of Shenling Baizhu San (SLBZS) as a supplement in a rat model of ulcerative colitis (UC) induced by 2,4,6-trinitrobenzenesulfonic acid (TNBS). Acute intestinal inflammation was induced in 40 male SD rats aged 4 weeks with 100 mg/kg TNBS, and then three dosages of SLBZS (0.5 g/kg, 1 g/kg, and 1.5 g/kg) were administered for eight days, respectively. Faecal microbiome composition was assessed by 16S rRNA high-throughput sequencing. The result indicated that SLBZS could reduce the diversity of gut microbiota and increased its abundance. At the genus level, the relative abundance of SCFAs producing bacteria including Prevotella and Oscillospira increased, while the relative abundance of opportunistic pathogens including Desulfovibrio and Bilophila decreased. Meanwhile, SLBZS could improve the lesions of colon and significantly reduce the level of MPO, increase the levels of SOD and CAT in rats' serum. These findings revealed that SLBZS was effective and possessed anticolitic activities in a rat model of UC by reducing macroscopical and microscopical colon injury, enhancing antioxidant capacity, and regulating gut microbiota.
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Morsy MA, Khalaf HM, Rifaai RA, Bayoumi AMA, Khalifa EMMA, Ibrahim YF. Canagliflozin, an SGLT-2 inhibitor, ameliorates acetic acid-induced colitis in rats through targeting glucose metabolism and inhibiting NOX2. Biomed Pharmacother 2021; 141:111902. [PMID: 34328119 DOI: 10.1016/j.biopha.2021.111902] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 06/29/2021] [Accepted: 07/06/2021] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND Inflammatory bowel disease is defined as chronic noninfectious inflammation of the gastrointestinal tract, including ulcerative colitis and Crohn's disease. Its incidence and predominance have increased globally, with no effective agents for preventing its recurrence or treatment until now. AIM The current study aimed to investigate the possible role of canagliflozin (CANA), a sodium-glucose co-transporter-2 inhibitor (SGLT-2), to prevent and treat acetic acid (AA)-induced colitis in a rat model. METHODS Colitis was induced in male Wistar rats by intrarectal instillation of 1 ml of 4% (v/v) AA. Rats were treated orally with either CANA (30 mg/kg/day, p.o.) for 10 days before or after colitis induction or sulfasalazine (360 mg/kg/day, p.o.) for 10 days before colitis induction. RESULTS AA resulted in a significant increase in disease activity index, colonic weight over length ratio, colon macroscopic damage score, and histological signs of colitis. All of these effects were significantly decreased by CANA administration. Additionally, CANA markedly inhibited AA-induced oxidative stress and inflammatory responses by significantly reducing the up-regulated levels in malondialdehyde, total nitrite, NF-κB, interleukin-1β, and TNF-α, and significantly increasing the down-regulated levels in reduced glutathione, superoxide dismutase, and interleukin-10. CANA significantly inhibited caspase-3 level while rescued survivin expression in colons. Finally, CANA reduced the elevated levels of pyruvic acid and G6PDH activity, as well as the levels of p22phox and NOX2 in the AA-induced colitis. CONCLUSION Our findings provide novel evidence that CANA has protective and therapeutic effects against AA-induced colitis by the impact of its antioxidant, anti-inflammatory, and anti-apoptotic effects.
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Affiliation(s)
- Mohamed A Morsy
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa 31982, Saudi Arabia; Department of Pharmacology, Faculty of Medicine, Minia University, El-Minia 61511, Egypt.
| | - Hanaa M Khalaf
- Department of Pharmacology, Faculty of Medicine, Minia University, El-Minia 61511, Egypt
| | - Rehab A Rifaai
- Department of Histology and Cell Biology, Faculty of Medicine, Minia University, El-Minia 61511, Egypt
| | - Asmaa M A Bayoumi
- Department of Biochemistry, Faculty of Pharmacy, Minia University, El-Minia 61511, Egypt
| | - Esraa M M A Khalifa
- Department of Biochemistry, Faculty of Pharmacy, Deraya University, El-Minia 61111, Egypt
| | - Yasmine F Ibrahim
- Department of Pharmacology, Faculty of Medicine, Minia University, El-Minia 61511, Egypt
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Metallothioneins in Inflammatory Bowel Diseases: Importance in Pathogenesis and Potential Therapy Target. Can J Gastroenterol Hepatol 2021; 2021:6665697. [PMID: 33987146 PMCID: PMC8093040 DOI: 10.1155/2021/6665697] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 04/10/2021] [Accepted: 04/16/2021] [Indexed: 12/12/2022] Open
Abstract
Immunological disorders, increased oxidative stress, and damage to the epithelial barrier play an important role in the pathogenesis of inflammatory bowel diseases (IBDs). In the treatment of patients with Crohn's disease (CD) and ulcerative colitis (UC), it is increasingly common to use biological drugs that selectively affect individual components of the inflammatory cascade. However, administering the medicines currently available does not always result in obtaining and maintaining remission, and it may also lead to the development of resistance to a given agent over time. Metallothioneins (MTs) belong to the group of low molecular weight proteins, which, among others, regulate the inflammation and homeostasis of heavy metals as well as participating in the regulation of the intensity of oxidative stress. The results of the studies conducted so far do not clearly indicate the role of MTs in the process of inflammation in patients with IBD. However, there are reports that suggest the possibility of using MTs as a potential target in the treatment of this group of patients.
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Polysaccharides from Hemp Seed Protect against Cyclophosphamide-Induced Intestinal Oxidative Damage via Nrf2-Keap1 Signaling Pathway in Mice. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:1813798. [PMID: 32908623 PMCID: PMC7468657 DOI: 10.1155/2020/1813798] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 07/14/2020] [Indexed: 02/04/2023]
Abstract
Hemp seed has been used as a traditional oriental medicine and health food in China for centuries. Polysaccharides from hemp seed (HSP) exhibit important properties of intestinal protection, but there are limited data on the specific underlying mechanism. The primary objective of this study was to investigate the protective effect of HSP on intestinal oxidative damage induced by cyclophosphamide (Cy) in mice. The results showed that pretreatment with HSP significantly increased the average daily gain, thymus index, spleen index, superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GSH-Px) activity in serum and ileal homogenate and significantly reduced malondialdehyde (MDA) content in ileal homogenate. In addition, the expression levels of SOD, GSH-Px, Nrf2, heme oxidase-1 (HO-1), and quinoneoxidoreductase-1 (NQO1) mRNA in ileal homogenate were significantly increased. Western blot results showed that HSP significantly upregulated the expression of Nrf2 protein and downregulated the expression of Keap1 protein in the ileum. Collectively, our findings indicated that HSP had protective effects on intestinal oxidative damage induced by Cy in mice, and its mechanism might be related to the activation of Nrf2-Keap1 signaling pathway.
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Moura FA, Goulart MOF, Campos SBG, da Paz Martins AS. The Close Interplay of Nitro-Oxidative Stress, Advanced Glycation end Products and Inflammation in Inflammatory Bowel Diseases. Curr Med Chem 2020; 27:2059-2076. [PMID: 30182837 DOI: 10.2174/0929867325666180904115633] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 07/29/2018] [Accepted: 08/11/2018] [Indexed: 12/19/2022]
Abstract
BACKGROUND Inflammatory Bowel Disease (IBD) exhibits no defined aetiology. However, factors such as genetic and nitro-oxidative stress are associated with chronic inflammation and IBD progression to Colorectal Cancer (CRC). The present review discusses the association of nitro-oxidative stress, inflammation and Advanced Glycation End products (AGE) and their corresponding receptor (RAGE) in IBD and examines the connection between these factors and nuclear factors, such as Nuclear Factor Kappa B (NF-κB), factorerythroid 2-related factor-2 (Nrf2), and p53 Mutant (p53M). METHODS We searched the PubMed, ScienceDirect and Web of Science databases using a combination of the following terms: IBD, CRC, oxidative stress, inflammation, NF-κB, Nrf2, p53M, AGE and RAGE. RESULTS Oxidative stress and inflammation activated two cellular pathways, the nuclear expression of pro-inflammatory, pro-oxidant and pro-oncogenic genes based on NF-κB and p53M, which is associated with NF-κB activation, Deoxyribonucleic acid (DNA) damage and the expression of pro-oncogenic genes. Nrf2 stimulates the nuclear expression of enzymatic and non-enzymatic antioxidant systems and anti-inflammatory genes, and is inhibited by chronic oxidative stress, NF-κB and p53M. AGE/RAGE are involved in inflammation progression because RAGE polymorphisms and increased RAGE levels are found in IBD patients. Alterations of these pathways in combination with oxidative damage are responsible for IBD symptoms and the progression to CRC. CONCLUSION IBD is an inflammatory and nitro-oxidative stress-based bowel disease. Achieving a molecular understanding of the biochemical events and their complicated interactions will impact basic and applied research, animal models, and clinical trials.
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Affiliation(s)
- Fabiana Andréa Moura
- Faculdade de Nutrição/Universidade Federal de Alagoas (FANUT/UFAL), Campus A. C. Simões, Avenida Lourival Melo Mota, s/n, Tabuleiro dos Martins, 57072-970 Maceió, Alagoas, Brazil
| | | | - Samara Bonfim Gomes Campos
- Programa de Pós-Graduação em Ciências da Saúde (PPGCS), Universidade Federal de Alagoas (UFAL), 57072-970 Maceió, Alagoas, Brazil
| | - Amylly Sanuelly da Paz Martins
- Programa de Pós-Graduação em Ciências da Saúde (PPGCS), Universidade Federal de Alagoas (UFAL), 57072-970 Maceió, Alagoas, Brazil
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Bashir M, Meddings J, Alshaikh A, Jung D, Le K, Amin R, Ratakonda S, Sharma S, Granja I, Satti M, Asplin J, Hassan H. Enhanced gastrointestinal passive paracellular permeability contributes to the obesity-associated hyperoxaluria. Am J Physiol Gastrointest Liver Physiol 2019; 316:G1-G14. [PMID: 30307745 PMCID: PMC6383380 DOI: 10.1152/ajpgi.00266.2018] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Most kidney stones (KS) are composed of calcium oxalate and small increases in urine oxalate enhance the stone risk. Obesity is a risk factor for KS, and urinary oxalate excretion increases with increased body size. We previously established the obese ob/ob ( ob) mice as a model (3.3-fold higher urine oxalate) to define the pathogenesis of obesity-associated hyperoxaluria (OAH). The purpose of this study was to test the hypothesis that the obesity-associated enhanced small intestinal paracellular permeability contributes to OAH by increasing passive paracellular intestinal oxalate absorption. ob Mice have significantly higher jejunal (1.6-fold) and ileal (1.4-fold) paracellular oxalate absorption ex vivo and significantly higher (5-fold) urine [13C]oxalate following oral gavage with [13C]oxalate, indicating increased intestinal oxalate absorption in vivo. The observation of higher oxalate absorption in vivo compared with ex vivo suggests the possibility of increased paracellular permeability along the entire gut. Indeed, ob mice have significantly higher fractions of the administered sucrose (1.7-fold), lactulose (4.4-fold), and sucralose (3.1-fold) excreted in the urine, reflecting increased gastric, small intestinal, and colonic paracellular permeability, respectively. The ob mice have significantly reduced gastrointestinal occludin, zonula occludens-1, and claudins-1 and -3 mRNA and total protein expression. Proinflammatory cytokines and oxidative stress, which are elevated in obesity, significantly enhanced paracellular intestinal oxalate absorption in vitro and ex vivo. We conclude that obese mice have significantly higher intestinal oxalate absorption and enhanced gastrointestinal paracellular permeability in vivo, which would likely contribute to the pathogenesis of OAH, since there is a transepithelial oxalate concentration gradient to drive paracellular intestinal oxalate absorption. NEW & NOTEWORTHY This study shows that the obese ob/ob mice have significantly increased gastrointestinal paracellular oxalate absorption and remarkably enhanced paracellular permeability along the entire gut in vivo, which are likely mediated by the obesity-associated increased systemic and intestinal inflammation and oxidative stress. A transepithelial oxalate concentration gradient driving gastrointestinal paracellular oxalate absorption exists, and therefore, our novel findings likely contribute to the hyperoxaluria observed in the ob/ob mice and hence to the pathogenesis of obesity-associated hyperoxaluria.
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Affiliation(s)
- Mohamed Bashir
- 1Department of Medicine, The University of Chicago, Chicago, Illinois
| | - Jon Meddings
- 2Department of Surgery, University of Calgary, Calgary, Alberta, Canada
| | - Altayeb Alshaikh
- 1Department of Medicine, The University of Chicago, Chicago, Illinois
| | - Daniel Jung
- 1Department of Medicine, The University of Chicago, Chicago, Illinois
| | - Kim Le
- 2Department of Surgery, University of Calgary, Calgary, Alberta, Canada
| | - Ruhul Amin
- 1Department of Medicine, The University of Chicago, Chicago, Illinois
| | | | - Sapna Sharma
- 1Department of Medicine, The University of Chicago, Chicago, Illinois
| | - Ignacio Granja
- 3Litholink Corporation, Laboratory Corporation of America Holdings, Chicago, Illinois
| | - Mustafa Satti
- 1Department of Medicine, The University of Chicago, Chicago, Illinois
| | - John Asplin
- 3Litholink Corporation, Laboratory Corporation of America Holdings, Chicago, Illinois
| | - Hatim Hassan
- 1Department of Medicine, The University of Chicago, Chicago, Illinois
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Vinpocetine Ameliorates Acetic Acid-Induced Colitis by Inhibiting NF-κB Activation in Mice. Inflammation 2018; 41:1276-1289. [PMID: 29633103 DOI: 10.1007/s10753-018-0776-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The idiopathic inflammatory bowel diseases (IBD) comprise two types of chronic intestinal disorders: Crohn's disease and ulcerative colitis. Recruited neutrophils and macrophages contribute to intestinal tissue damage via production of ROS and NF-κB-dependent pro-inflammatory cytokines. The introduction of anti-TNF-α therapies in the treatment of IBD patients was a seminal advance. This therapy is often limited by a loss of efficacy due to the development of adaptive immune response, underscoring the need for novel therapies targeting similar pathways. Vinpocetine is a nootropic drug and in addition to its antioxidant effect, it is known to have anti-inflammatory and analgesic properties, partly by inhibition of NF-κB and downstream cytokines. Therefore, the present study evaluated the effect of the vinpocetine in a model of acid acetic-induced colitis in mice. Treatment with vinpocetine reduced edema, MPO activity, microscopic score and macroscopic damage, and visceral mechanical hyperalgesia. Vinpocetine prevented the reduction of colonic levels of GSH, ABTS radical scavenging ability, and normalized levels of anti-inflammatory cytokine IL-10. Moreover, vinpocetine reduced NF-κB activation and thereby NF-κB-dependent pro-inflammatory cytokines IL-1β, TNF-α, and IL-33 in the colon. Thus, we demonstrate for the first time that vinpocetine has anti-inflammatory, antioxidant, and analgesic effects in a model of acid acetic-induced colitis in mice and deserves further screening to address its suitability as an approach for the treatment of IBD.
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Kaur R, Thakur S, Rastogi P, Kaushal N. Resolution of Cox mediated inflammation by Se supplementation in mouse experimental model of colitis. PLoS One 2018; 13:e0201356. [PMID: 30063735 PMCID: PMC6067745 DOI: 10.1371/journal.pone.0201356] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 07/13/2018] [Indexed: 12/21/2022] Open
Abstract
UC a form of IBD is a chronic inflammatory disorder of large intestine, with unknown etiology. Reports suggest a critical role of COX-2 dependent prostaglandins (PGs) mediated inflammatory pathway in pathophysiology of UC. However, COX inhibition using NSAIDs exacerbate IBD and thus is not a viable solution. Currently, in DSS induced experimental colitis in mice, we have demonstrated that dietary Se supplementation (0.5ppm as sodium selenite) symptomatically resolves the signs of inflammation in a redox sensitive manner as compared to Se deficient (0.01ppm) conditions, as seen by modulation in oxidative stress markers, morphological changes, histopathological examinations, biochemical studies such as MPO activity, activity of intestinal markers enzymes as well as mRNA and expressions of various pro and anti-inflammatory factors such as, mPGES, hPGDS, TXAS, 15-PGDH, GPX-1 and GPX-2. These findings were validated and correlated with changes in the biophysical parameters such as membrane fluidity, electrical parameters (impedance), transport across the colonic tissue and FTIR. Current study not only concluded that Se at supranutritional concentrations by modulating the redox status relieves the signs of colitis by regulating COX dependent PG biosynthetic pathway, but also sheds light on the biophysical characterization of these inflammatory/resolution pathways involved in UC.
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Affiliation(s)
- Ramanpreet Kaur
- Department of Biophysics, BMS Block -II, Panjab University, South Campus, Chandigarh, India
| | - Shivani Thakur
- Department of Biophysics, BMS Block -II, Panjab University, South Campus, Chandigarh, India
| | - Pulkit Rastogi
- Department of Hematology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Naveen Kaushal
- Department of Biophysics, BMS Block -II, Panjab University, South Campus, Chandigarh, India
- * E-mail:
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Lee WT, Tung YT, Wu CC, Tu PS, Yen GC. Camellia Oil ( Camellia oleifera Abel.) Modifies the Composition of Gut Microbiota and Alleviates Acetic Acid-Induced Colitis in Rats. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:7384-7392. [PMID: 29895146 DOI: 10.1021/acs.jafc.8b02166] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Ulcerative colitis (UC), one type of chronic inflammatory bowel disease (IBD), is a chronic and recurrent disorder of the gastrointestinal (GI) tract. As camellia oil (CO) is traditionally used to treat GI disorders, this study investigated the role of CO on acetic acid-induced colitis in the rat. The composition of the gut microbial community is related to many diseases; thus, this study also investigated the effects of CO on the composition of the gut microbiota. The rats were fed a dose of 2 mL/kg body weight CO, olive oil (OO), or soybean oil (SO) once a day for 20 days, and the gut microbiota was analyzed using 16S rRNA gene sequencing. Results of the gut microbiota examination showed significant clustering of feces after treatment with CO and OO; however, individual differences with OO varied considerably. Compared to SO and OO, the intake of CO increased the ratio of Firmicutes/Bacteroidetes, the α-diversity, relative abundance of the Bifidobacterium, and reduced Prevotella of the gut microbiota. On day 21, colitis was induced by a single transrectal administration of 2 mL of 4% acetic acid. However, pretreatment of rats with CO or OO for 24 days slightly enhanced antioxidant and antioxidant enzyme activities and significantly reduced inflammatory damage and lipid peroxidation, thus ameliorating acetic acid-induced colitis. These results indicated that CO was better able to ameliorate impairment of the antioxidant system induced by acetic acid compared to OO and SO, which may have been due to CO modifying the composition of the gut microbiota or CO being a rich source of phytochemicals.
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Affiliation(s)
| | - Yu-Tang Tung
- Graduate Institute of Metabolism and Obesity Sciences , Taipei Medical University , 250 Wu-Hsing Street , Taipei 110 , Taiwan
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13
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Myeloperoxidase in the inflamed colon: A novel target for treating inflammatory bowel disease. Arch Biochem Biophys 2018; 645:61-71. [DOI: 10.1016/j.abb.2018.03.012] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 03/08/2018] [Accepted: 03/12/2018] [Indexed: 12/17/2022]
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14
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Chen Y, Zhang X, Guo Q, Liu L, Li C, Cao L, Qin Q, Zhao M, Wang W. Effects of UV-B Radiation on the Content of Bioactive Components and the Antioxidant Activity of Prunella vulgaris L. Spica during Development. Molecules 2018; 23:molecules23050989. [PMID: 29695057 PMCID: PMC6099561 DOI: 10.3390/molecules23050989] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 03/21/2018] [Accepted: 04/05/2018] [Indexed: 11/16/2022] Open
Abstract
The effects of UV-B radiation on the content of bioactive components and the antioxidant activity of Prunella vulgaris L. spica during development were studied. The experimental design involved two levels of UV-B radiation intensity (0 and 120 μW cm-2 nm-1). The results showed that the contents of total flavonoids, rosmarinic acid, caffeic acid and hyperoside, as well as the antioxidant capacities (DPPH● and ABTS•+ scavenging activities), in the spicas significantly decreased during spica development. The content of salviaflaside in the spicas significantly increased during development. The highest contents of total flavonoids, rosmarinic acid, and caffeic acid and the highest antioxidant activities were found in spicas in the full-flowering stage, while the highest content of hyperoside was found in spicas in the bud stage. In addition, the highest content of salviaflaside was found in spicas in the mature-fruiting stage. UV-B radiation significantly promoted the synthesis of secondary metabolites, increased the contents of the main bioactive components in the three developmental stages of isolated dried spicas, and significantly increased the DPPH● and ABTS•+ scavenging activities of P. vulgaris spicas in the mature-fruiting stage. Moreover, the total flavonoids content was positively correlated with the DPPH● and ABTS•+ scavenging activities, and the correlation with the DPPH● scavenging activity was very strong. This result shows that the highest contents of the main bioactive components in the spicas were not all found in the same developmental stages of P. vulgaris. Our research revealed that the best stage for harvesting P. vulgaris spica was between the bud stage and the full-flowering stage since harvesting at this point provides a higher content of bioactive components and a higher antioxidant capacity, which is relevant for medicinal applications.
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Affiliation(s)
- Yuhang Chen
- Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China.
- Institute of Chinese Medicinal Materials, Nanjing Agricultural University, Nanjing 210095, China.
- College of Pharmaceutical Sciences, Chengdu Medical College, Chengdu 610500, China.
- Key Laboratory of Small Molecule Special Structure Drugs, Sichuan Institution of Higher Education/Chengdu Medical College, Chengdu 610500, China.
| | - Xuerong Zhang
- Institute of Chinese Medicinal Materials, Nanjing Agricultural University, Nanjing 210095, China.
| | - Qiaosheng Guo
- Institute of Chinese Medicinal Materials, Nanjing Agricultural University, Nanjing 210095, China.
| | - Li Liu
- Institute of Chinese Medicinal Materials, Nanjing Agricultural University, Nanjing 210095, China.
| | - Chen Li
- College of Pharmaceutical Sciences, Chengdu Medical College, Chengdu 610500, China.
- Key Laboratory of Small Molecule Special Structure Drugs, Sichuan Institution of Higher Education/Chengdu Medical College, Chengdu 610500, China.
| | - Liping Cao
- College of Pharmaceutical Sciences, Chengdu Medical College, Chengdu 610500, China.
- Key Laboratory of Small Molecule Special Structure Drugs, Sichuan Institution of Higher Education/Chengdu Medical College, Chengdu 610500, China.
| | - Qin Qin
- College of Pharmaceutical Sciences, Chengdu Medical College, Chengdu 610500, China.
- Key Laboratory of Small Molecule Special Structure Drugs, Sichuan Institution of Higher Education/Chengdu Medical College, Chengdu 610500, China.
| | - Miao Zhao
- College of Pharmaceutical Sciences, Chengdu Medical College, Chengdu 610500, China.
- Key Laboratory of Small Molecule Special Structure Drugs, Sichuan Institution of Higher Education/Chengdu Medical College, Chengdu 610500, China.
| | - Wenming Wang
- Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China.
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15
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Tawiah A, Cornick S, Moreau F, Gorman H, Kumar M, Tiwari S, Chadee K. High MUC2 Mucin Expression and Misfolding Induce Cellular Stress, Reactive Oxygen Production, and Apoptosis in Goblet Cells. THE AMERICAN JOURNAL OF PATHOLOGY 2018; 188:1354-1373. [PMID: 29545196 DOI: 10.1016/j.ajpath.2018.02.007] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 02/06/2018] [Accepted: 02/20/2018] [Indexed: 12/20/2022]
Abstract
MUC2 mucin is a large glycoprotein produced by goblet cells that forms the protective mucus blanket overlying the intestinal epithelium as the first line of innate host defense. High MUC2 production in inflammatory bowel disease and infectious colitis depletes goblet cells and the mucus layer by an unknown mechanism. Herein, we analyzed the effect of high MUC2 biosynthesis on endoplasmic reticulum (ER) stress and apoptosis in goblet cells using a high MUC2-producing human goblet cell line (HT29-H) and an HT29-H clone (HT29-L) silenced for MUC2 expression by lentivirus-mediated shRNA. Goblet cell ER stress and apoptosis were quantified during early onset of dextran sulfate sodium-induced colitis in C57BL/6 and Math1M1GFP mice. Compared with HT29-L and MUC2 nonproducing Caco-2 cells, high MUC2-producing HT29-H cells had significantly increased ER stress and apoptosis after treatment with ER stress-inducing agents. Apoptosis was driven by increased misfolded MUC2 that triggered elevated levels of reactive oxygen species. Correcting MUC2 folding and inhibiting reactive oxygen species alleviated ER stress and rescued cells from apoptosis. During early-onset colitis, mucus hypersecretion caused severe ER stress and apoptosis of goblet cells that preceded absorptive epithelial cell damage. Thus, in gastrointestinal inflammation, high MUC2 biosynthesis and goblet cell apoptosis lead to a dysfunctional epithelial barrier. Enhancing MUC2 folding may help alleviate goblet cell depletion and maintain mucosal integrity.
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Affiliation(s)
- Adelaide Tawiah
- Department of Microbiology, Immunology and Infectious Diseases, Gastrointestinal Research Group, Snyder Institute for Chronic Diseases, Faculty of Medicine, University of Calgary Health Sciences Centre, Calgary, Alberta, Canada
| | - Steve Cornick
- Department of Microbiology, Immunology and Infectious Diseases, Gastrointestinal Research Group, Snyder Institute for Chronic Diseases, Faculty of Medicine, University of Calgary Health Sciences Centre, Calgary, Alberta, Canada
| | - France Moreau
- Department of Microbiology, Immunology and Infectious Diseases, Gastrointestinal Research Group, Snyder Institute for Chronic Diseases, Faculty of Medicine, University of Calgary Health Sciences Centre, Calgary, Alberta, Canada
| | - Hayley Gorman
- Department of Microbiology, Immunology and Infectious Diseases, Gastrointestinal Research Group, Snyder Institute for Chronic Diseases, Faculty of Medicine, University of Calgary Health Sciences Centre, Calgary, Alberta, Canada
| | - Manish Kumar
- Department of Microbiology, Immunology and Infectious Diseases, Gastrointestinal Research Group, Snyder Institute for Chronic Diseases, Faculty of Medicine, University of Calgary Health Sciences Centre, Calgary, Alberta, Canada
| | - Sameer Tiwari
- Department of Microbiology, Immunology and Infectious Diseases, Gastrointestinal Research Group, Snyder Institute for Chronic Diseases, Faculty of Medicine, University of Calgary Health Sciences Centre, Calgary, Alberta, Canada
| | - Kris Chadee
- Department of Microbiology, Immunology and Infectious Diseases, Gastrointestinal Research Group, Snyder Institute for Chronic Diseases, Faculty of Medicine, University of Calgary Health Sciences Centre, Calgary, Alberta, Canada.
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16
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Yuksel M, Ates I, Kaplan M, Arikan MF, Ozin YO, Kilic ZMY, Topcuoglu C, Kayacetin E. Is Oxidative Stress Associated with Activation and Pathogenesis of Inflammatory Bowel Disease? J Med Biochem 2017; 36:341-348. [PMID: 30581331 PMCID: PMC6294084 DOI: 10.1515/jomb-2017-0013] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Accepted: 03/06/2017] [Indexed: 11/20/2022] Open
Abstract
Background We aimed to determine the levels of total antioxidant status (TAS), total oxidant status (TOS), oxidative stress index (OSI) and paraoxonase1/arylesterase levels in inflammatory bowel disease (IBD), and the relation be - tween these molecules and the activity index of the disease.
Methods Eighty IBD patients (ulcerative colitis (UC)/Crohn disease (CD) 40/40) and 80 control group participants were included in the study. Oxidative stress parameters were measured using the colorimetric method. As disease activity indexes, the endoscopic activity index (EAI) was used for UC and the CD activity index (CDAI) was used for CD. Results In IBD patients, mean TAS (1.3±0.2 vs 1.9±0.2, respectively; p<0.001) and arylesterase (963.9±232.2 vs 1252.9±275, respectively; p<0.001) levels were found to be lower and TOS level (5.6±1.6 vs 4.0±1.0, respectively; p<0.001) and OSI rate (4.5±1.6 vs 2.2±0.8, respectively; p<0.001) were found to be higher compared to the control group. A strong positive correlation was found between EAI and TOS levels (r=0.948, p<0.001) and OSI rate (r=0.894, p<0.001) for UC patients. A very strong positive correlation was found between EAI and TOS levels (r=0.964, p<0.001) and OSI rate (r=0.917, p<0.001) for CD patients. It was found in a stepwise regression model that C-reactive protein, OSI and arylesterase risk factors were predictors of IBD compared to the control group. Conclusion: Increased oxidative stress level in IBD patients and the detection of OSI rate as an independent predictor for disease activity indexes lead to the idea that oxidative stress might be related to the pathogenesis of IBD.
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Affiliation(s)
- Mahmut Yuksel
- Turkey Yuksek Ihtisas Training and Research Hospital, Department of GastroenterologyAnkara, Turkey
| | - Ihsan Ates
- Ankara Numune Training and Research Hospital, Department of Internal MedicineAnkara, Turkey
| | - Mustafa Kaplan
- Turkey Yuksek Ihtisas Training and Research Hospital, Department of GastroenterologyAnkara, Turkey
| | - Mehmet Fettah Arikan
- Ankara Numune Training and Research Hospital, Department of Internal MedicineAnkara, Turkey
| | - Yasemin Ozderin Ozin
- Turkey Yuksek Ihtisas Training and Research Hospital, Department of GastroenterologyAnkara, Turkey
| | - Zeki Mesut Yalin Kilic
- Turkey Yuksek Ihtisas Training and Research Hospital, Department of GastroenterologyAnkara, Turkey
| | - Canan Topcuoglu
- Ankara Numune Training and Research Hospital, Department of BiochemistryAnkara, Turkey
| | - Ertugrul Kayacetin
- Turkey Yuksek Ihtisas Training and Research Hospital, Department of GastroenterologyAnkara, Turkey
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17
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Verstraete M, Choukroun ML, Siao-Him Fa V, Fayon M, Rebouissoux L, Enaud R, Lamireau T. Altered pulmonary gas transfer capacity and capillary blood volume in pediatric Crohn's disease. Pediatr Pulmonol 2017; 52:1051-1056. [PMID: 28719106 DOI: 10.1002/ppul.23703] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Accepted: 03/17/2017] [Indexed: 01/31/2023]
Abstract
OBJECTIVES To describe diffusing capacity for carbon monoxide (DLCO) and its components, that is, membrane diffusing capacity (DmCO) and pulmonary capillary blood volume (Vc) in children with Crohn's disease (CD), and to investigate the correlation between these parameters and disease activity. WORKING HYPOTHESIS The most common lung function abnormalities are a reduced pulmonary DLCO and small airways disorders which are in many instances, clinically silent. No valid explanations have been proposed regarding the modifications in gas transfer capacity in active CD. METHODS DLCO, DmCO, and Vc were measured in 25 CD children by the simultaneous single breath lung diffusing capacity method using nitric oxide (NO) and carbon monoxide (CO) transfer. These parameters were analyzed in relation to the CD disease activity index. RESULTS DLCO (90.7 ± 4.5% vs 128.5 ± 4.7%; P < 0.001), Dm (92.4 ± 5.9% vs 125.6 ± 6.3%; P < 0.001), and Vc (72.6 ± 3.7% vs 104.4 ± 4.0%; P < 0.001) were significantly decreased in the active CD group in comparison with the inactive CD group. DLCO (r = -0.60; P < 0.01), DmCO (r = -0.45; P < 0.01), and Vc (r = -0.60; P < 0.01) were inversely correlated to the PCDAI. In 8 patients who participated to the study at initial diagnosis then during remission, DmCO and Vc increased significantly between the active and the inactive period of the disease. CONCLUSION Pulmonary diffusing capacity is impaired in children with active CD, mainly because of a decrease of the pulmonary capillary volume.
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Affiliation(s)
- Marie Verstraete
- CHU de Bordeaux, Unité de gastroentérologie Pédiatrique, Bordeaux, France
| | - Marie-Luce Choukroun
- Univ. Bordeaux, Centre de Recherches Cardio-Thoracique, Bordeaux, France.,INSERM, Centre de Recherches Cardio-Thoracique, Bordeaux, France.,CHU de Bordeaux, Exploration du Système Respiratoire, Bordeaux, France
| | - Valerie Siao-Him Fa
- CHU de Bordeaux, Unité de gastroentérologie Pédiatrique, Bordeaux, France.,INSERM, Centre de Recherches Cardio-Thoracique, Bordeaux, France.,CHU de Bordeaux, Exploration du Système Respiratoire, Bordeaux, France
| | - Michael Fayon
- CHU de Bordeaux, Unité de gastroentérologie Pédiatrique, Bordeaux, France.,Univ. Bordeaux, Centre de Recherches Cardio-Thoracique, Bordeaux, France.,INSERM, Centre de Recherches Cardio-Thoracique, Bordeaux, France.,CHU de Bordeaux, Centre d'Investigation Clinique- INSERM, Bordeaux, France
| | - Laurent Rebouissoux
- CHU de Bordeaux, Unité de gastroentérologie Pédiatrique, Bordeaux, France.,CHU de Bordeaux, Centre d'Investigation Clinique- INSERM, Bordeaux, France
| | - Raphael Enaud
- CHU de Bordeaux, Unité de gastroentérologie Pédiatrique, Bordeaux, France
| | - Thierry Lamireau
- CHU de Bordeaux, Unité de gastroentérologie Pédiatrique, Bordeaux, France.,CHU de Bordeaux, Centre d'Investigation Clinique- INSERM, Bordeaux, France
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18
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Senhaji N, Zaid Y, El Khalfi B, Fahimi M, Martin J, Badre W, Nadifi S, Soukri A. Peroxiredoxin-2 up-regulation in inflammatory bowel disease: Friend or foe? J Gastroenterol Hepatol 2017; 32:1212-1220. [PMID: 27869326 DOI: 10.1111/jgh.13664] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Revised: 11/04/2016] [Accepted: 11/15/2016] [Indexed: 01/14/2023]
Abstract
BACKGROUND Inflammatory bowel diseases (IBD) are chronic multi-factorial inflammatory disorders. Accumulating investigations have provided compelling evidence that describe the interplay of a complex genetic landscape and inappropriate inflammatory response to intestinal microbes in disease etiopathogenesis but still pose challenges in diagnostic practices. METHOD In this study, comparative proteomic analysis was conducted to identify disease specific proteins underlying IBD pathogenetic mechanisms. Total blood proteins of the IBD patients and healthy subjects were analyzed with one-dimensional electrophoresis; differentially expressed bands were excised and subjected to matrix-assisted laser desorption ionization-time of flight mass spectrometry along with nanoflow liquid chromatography electrospray ionization-tandem mass spectrometry analysis. Presence of glycosylation, hydroxylation, and phosphorylation post-translational modifications was further investigated by immunoprecipitation. RESULTS Peroxiredoxin-2 (PRDX2) and hemoglobin-subunits proteins, which are closely involved in the response to oxidative stress, were identified. PRDX2 was selected for further validation using western blot and reverse transcription-polymerase chain reaction. PRDX2 overexpression was restricted to the protein level within the membrane fraction. Immunoprecipitation identified PRDX2 to be post-translationally glycosylated and phosphorylated. CONCLUSION Our findings demonstrate the implication of PRDX2 in IBD. Future studies are required to establish its functional role and to determine the clinical utility.
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Affiliation(s)
- Nezha Senhaji
- Laboratory of Genetics and Molecular Pathology (LGPM), Faculty of Medicine and Pharmacy of Casablanca, Casablance, Morocco
| | - Younes Zaid
- Laboratory of Thrombosis and Hemostasis, Montreal Heart Institute, Montreal, Quebec, Canada.,Centre de Recherche de l'Université Mohamed VI des Sciences de la Santé, Casablanca, Morocco
| | - Bouchra El Khalfi
- Laboratory of Physiology and Molecular Genetics, Faculty of Sciences Aïn Chock, Hassan II University, Casablanca, Morocco
| | - Mina Fahimi
- Gastroenterology Department, CHU IbnRochd, Casablanca, Morocco
| | - Javier Martin
- Instituto de Parasitología y Biomedicina López-Neyra, Consejo Superior de Investigaciones Científicas, P.T.S. Granada, Spain
| | - Wafaa Badre
- Gastroenterology Department, CHU IbnRochd, Casablanca, Morocco
| | - Sellama Nadifi
- Laboratory of Genetics and Molecular Pathology (LGPM), Faculty of Medicine and Pharmacy of Casablanca, Casablance, Morocco
| | - Abdelaziz Soukri
- Laboratory of Physiology and Molecular Genetics, Faculty of Sciences Aïn Chock, Hassan II University, Casablanca, Morocco
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19
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Gerstgrasser A, Melhem H, Leonardi I, Atrott K, Schäfer M, Werner S, Rogler G, Frey-Wagner I. Cell-specific Activation of the Nrf2 Antioxidant Pathway Increases Mucosal Inflammation in Acute but Not in Chronic Colitis. J Crohns Colitis 2017; 11:485-499. [PMID: 27683801 DOI: 10.1093/ecco-jcc/jjw172] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Accepted: 09/27/2016] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND AIMS The transcription factor Nrf2 is a major modulator of the cellular antioxidant response. Oxidative burst of infiltrating macrophages leads to a massive production of reactive oxygen species in inflamed tissue of inflammatory bowel disease patients. This oxidative burst contributes to tissue destruction and epithelial permeability, but it is also an essential part of the antibacterial defence. We therefore investigated the impact of the Nrf2 orchestrated antioxidant response in both acute and chronic intestinal inflammation. METHODS To study the role of Nrf2 overexpression in mucosal inflammation, we used transgenic mice conditionally expressing a constitutively active form of Nrf2 [caNrf2] either in epithelial cells or in the myeloid cell lineage. Acute colitis was induced by dextran sulphate sodium [DSS] in transgenic and control animals, and changes in gene expression were evaluated by genome-wide expression studies. Long-term effects of Nrf2 activation were studied in mice with an IL-10-/- background. RESULTS Expression of caNrf2 either in epithelial cells or myeloid cells resulted in aggravation of DSS-induced acute colitis. Aggravation of inflammation by caNrf2 was not observed in the IL-10-/- model of spontaneous chronic colitis, where even a trend towards reduced prolapse rate was observed. CONCLUSIONS Our findings show that a well-balanced redox homeostasis is as important in epithelial cells as in myeloid cells during induction of colitis. Aggravation of acute DSS colitis in response to constitutive Nrf2 expression emphasises the importance of tight regulation of Nrf2 during the onset of intestinal inflammation.
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Affiliation(s)
- Alexandra Gerstgrasser
- Division of Gastroenterology and Hepatology, University Hospital Zurich, Zurich, Switzerland.,Zurich Center for Integrative Human Physiology [ZIHP], University of Zurich, Zurich, Switzerland
| | - Hassan Melhem
- Division of Gastroenterology and Hepatology, University Hospital Zurich, Zurich, Switzerland
| | - Irina Leonardi
- Division of Gastroenterology and Hepatology, University Hospital Zurich, Zurich, Switzerland.,Zurich Center for Integrative Human Physiology [ZIHP], University of Zurich, Zurich, Switzerland
| | - Kirstin Atrott
- Division of Gastroenterology and Hepatology, University Hospital Zurich, Zurich, Switzerland
| | - Matthias Schäfer
- Institute of Molecular Health Sciences, ETH Zurich, Zurich, Switzerland
| | - Sabine Werner
- Institute of Molecular Health Sciences, ETH Zurich, Zurich, Switzerland
| | - Gerhard Rogler
- Division of Gastroenterology and Hepatology, University Hospital Zurich, Zurich, Switzerland.,Zurich Center for Integrative Human Physiology [ZIHP], University of Zurich, Zurich, Switzerland
| | - Isabelle Frey-Wagner
- Division of Gastroenterology and Hepatology, University Hospital Zurich, Zurich, Switzerland.,Zurich Center for Integrative Human Physiology [ZIHP], University of Zurich, Zurich, Switzerland
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20
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Ferretti E, Tremblay E, Thibault MP, Grynspan D, Burghardt KM, Bettolli M, Babakissa C, Levy E, Beaulieu JF. The nitric oxide synthase 2 pathway is targeted by both pro- and anti-inflammatory treatments in the immature human intestine. Nitric Oxide 2017; 66:53-61. [PMID: 28315470 DOI: 10.1016/j.niox.2017.03.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 02/16/2017] [Accepted: 03/13/2017] [Indexed: 12/15/2022]
Abstract
BACKGROUND AND AIM NO synthase 2 (NOS2) was recently identified as one the most overexpressed genes in intestinal samples of premature infants with necrotizing enterocolitis (NEC). NOS2 is widely implicated in the processes of epithelial cell injury/apoptosis and host immune defense but its specific role in inflammation of the immature human intestinal mucosa remains unclear. Interestingly, factors that prevent NEC such as epidermal growth factor (EGF) attenuate the inflammatory response in the mid-gestation human small intestine using serum-free organ culture while drugs that are associated with NEC occurrence such as the non-steroidal anti-inflammatory drug, indomethacin (INDO), exert multiple detrimental effects on the immature human intestine. In this study we investigate the potential role of NOS2 in modulating the gut inflammatory response under protective and stressful conditions by determining the expression profile of NOS2 and its downstream pathways in the immature intestine. METHODS Gene expression profiles of cultured mid-gestation human intestinal explants were investigated in the absence or presence of a physiological concentration of EGF (50 ng/ml) or 1 μM INDO for 48 h using Illumina whole genome microarrays, Ingenuity Pathway Analysis software and quantitative PCR to investigate the expression of NOS2 and NOS2-pathway related genes. RESULTS In the immature intestine, NOS2 expression was found to be increased by EGF and repressed by INDO. Bioinformatic analysis identified differentially regulated pathways where NOS2 is known to play an important role including citrulline/arginine metabolism, epithelial cell junctions and oxidative stress. At the individual gene level, we identified many differentially expressed genes of the citrulline/arginine metabolism pathway such as ARG1, ARG2, GLS, OAT and OTC in response to EGF and INDO. Gene expression of tight junction components such as CLDN1, CLDN2, CLDN7 and OCN and of antioxidant markers such as DUOX2, GPX2, SOD2 were also found to be differentially modulated by EGF and INDO. CONCLUSION These results suggest that the protective effect of EGF and the deleterious influence of INDO on the immature intestine could be mediated via regulation of NOS2. Pathways downstream of NOS2 involved with these effects include metabolism linked to NO production, epithelial barrier permeability and antioxidant expression. These results suggest that NOS2 is a likely regulator of the inflammatory response in the immature human gut and may provide a mechanistic basis for the protective effect of EGF and the deleterious effects of INDO.
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Affiliation(s)
- Emanuela Ferretti
- Research Consortium on Child Intestinal Inflammation, Division of Neonatology, Department of Pediatrics, University of Ottawa, Ottawa, Canada
| | - Eric Tremblay
- Research Consortium on Child Intestinal Inflammation, Department of Anatomy and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Canada
| | - Marie-Pier Thibault
- Research Consortium on Child Intestinal Inflammation, Department of Anatomy and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Canada
| | - David Grynspan
- Research Consortium on Child Intestinal Inflammation, Department of Pathology and Laboratory Medicine, University of Ottawa, Ottawa, Canada
| | - Karolina M Burghardt
- Research Consortium on Child Intestinal Inflammation, Division of Gastroenterology, Hepatology and Nutrition, Hospital for Sick Children and Department of Pediatrics, University of Toronto, Toronto, Canada
| | - Marcos Bettolli
- Research Consortium on Child Intestinal Inflammation, Department of Surgery, University of Ottawa, Ottawa, Canada
| | - Corentin Babakissa
- Research Consortium on Child Intestinal Inflammation, Department of Pediatrics, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Canada
| | - Emile Levy
- Research Consortium on Child Intestinal Inflammation, Department of Nutrition, CHU Sainte-Justine, Université de Montréal, Montréal, Canada
| | - Jean-François Beaulieu
- Research Consortium on Child Intestinal Inflammation, Department of Anatomy and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Canada.
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21
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Trivedi MK, Gangwar M, Mondal SC, Jana S. Immunomodulatory properties and biomarkers characterization of novel Withania somnifera based formulation supplemented with minerals in Sprague Dawley rats. ACTA ACUST UNITED AC 2017. [DOI: 10.1007/s13596-016-0255-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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22
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The Gut Microbiome of Pediatric Crohn's Disease Patients Differs from Healthy Controls in Genes That Can Influence the Balance Between a Healthy and Dysregulated Immune Response. Inflamm Bowel Dis 2016; 22:2607-2618. [PMID: 27760077 DOI: 10.1097/mib.0000000000000949] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Exclusive enteral nutrition (EEN) is a first-line therapy in pediatric Crohn's disease (CD) thought to induce remission through changes in the gut microbiome. With microbiome assessment largely focused on microbial taxonomy and diversity, it remains unclear to what extent EEN induces functional changes that thereby contribute to its therapeutic effect. METHODS Fecal samples were collected from 15 pediatric CD patients prior to and after EEN treatment, as well as from 5 healthy controls. Metagenomic data were obtained via next-generation sequencing, and nonhuman reads were mapped to KEGG pathways, where possible. Pathway abundance was compared between CD patients and controls, and between CD patients that sustained remission (SR) and those that did not sustain remission (NSR). RESULTS Of 132 KEGG pathways identified, 8 pathways differed significantly between baseline CD patients and controls. Examination of these eight pathways showed SR patients had greater similarity to controls than NSR patients in all cases. Pathways fell into one of three groups: 1) no prior connection to IBD, 2) previously reported connection to IBD, and 3) known roles in innate immunity and immunoregulation. CONCLUSIONS The microbiota of CD patients and controls represent alternative ecological states that have broad differences in functional capabilities, including xenobiotic and environmental pollutant degradation, succinate metavolism, and bacterial HtpG, all of which can affect barrier integrity and immune regulation. Moreover, our finding that SR patients were more similar to healthy controls suggests that community microbial function, as inferred from fecal microbiomes, could serve as a valuable diagnostic tool.
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23
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Algieri F, Rodriguez-Nogales A, Vezza T, Garrido-Mesa J, Garrido-Mesa N, Utrilla MP, González-Tejero MR, Casares-Porcel M, Molero-Mesa J, Del Mar Contreras M, Segura-Carretero A, Pérez-Palacio J, Diaz C, Vergara N, Vicente F, Rodriguez-Cabezas ME, Galvez J. Anti-inflammatory activity of hydroalcoholic extracts of Lavandula dentata L. and Lavandula stoechas L. JOURNAL OF ETHNOPHARMACOLOGY 2016; 190:142-158. [PMID: 27269390 DOI: 10.1016/j.jep.2016.05.063] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 05/09/2016] [Accepted: 05/31/2016] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Plants from genus Lavandula have been used as anti-inflammatory drugs in Mediterranean traditional medicine. Nowadays, there is a growing interest for complementary medicine, including herbal remedies, to treat inflammatory bowel disease (IBD). AIM OF THE STUDY To test the anti-inflammatory properties of Lavandula dentata and Lavandula stoechas extracts in two inflammatory experimental models: TNBS model of rat colitis and the carrageenan-induced paw edema in mice, in order to mimic the intestinal conditions and the extra-intestinal manifestations of human IBD, respectively. MATERIAL AND METHODS The extracts were characterized through the qualitative HPLC analysis. Then, they were assayed in vitro and in vivo. In vitro studies were performed in BMDMs and CMT-93 epithelial cells with different concentrations of the extracts (ranging from 0.1 to 100µg/ml). The extracts were tested in vivo in the TNBS model of rat colitis (10 and 25mg/kg) and in the carrageenan-induced paw edema in mice (10, 25 and 100mg/kg). RESULTS L. dentata and L. stoechas extracts displayed immunomodulatory properties in vitro down-regulating different mediators of inflammation like cytokines and nitric oxide. They also showed anti-inflammatory effects in the TNBS model of colitis as evidenced by reduced myeloperoxidase activity and increased total glutathione content, indicating a decrease of neutrophil infiltration and an improvement of the oxidative state. Besides, both extracts modulated the expression of pro-inflammatory cytokines and chemokines, and ameliorated the altered epithelial barrier function. They also displayed anti-inflammatory effects in the carrageenan-induced paw edema in mice, since a significant reduction of the paw thickness was observed. This was associated with a down-regulation of the expression of different inducible enzymes like MMP-9, iNOS and COX-2 and pro-inflammatory cytokines, all involved in the maintenance of the inflammatory condition. CONCLUSION L. dentata and L. stoechas extracts showed intestinal anti-inflammatory effect, confirming their potential use as herbal remedies in gastrointestinal disorders. In addition, their anti-inflammatory effect was also observed in other locations, thus suggesting a possible use for the treatment of the extra-intestinal symptoms of IBD.
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Affiliation(s)
- Francesca Algieri
- CIBER-EHD, Department of Pharmacology, IBS.GRANADA, Center for Biomedical Research (CIBM), University of Granada, Granada, Spain
| | - Alba Rodriguez-Nogales
- CIBER-EHD, Department of Pharmacology, IBS.GRANADA, Center for Biomedical Research (CIBM), University of Granada, Granada, Spain
| | - Teresa Vezza
- CIBER-EHD, Department of Pharmacology, IBS.GRANADA, Center for Biomedical Research (CIBM), University of Granada, Granada, Spain
| | - Jose Garrido-Mesa
- CIBER-EHD, Department of Pharmacology, IBS.GRANADA, Center for Biomedical Research (CIBM), University of Granada, Granada, Spain
| | - Natividad Garrido-Mesa
- CIBER-EHD, Department of Pharmacology, IBS.GRANADA, Center for Biomedical Research (CIBM), University of Granada, Granada, Spain
| | - M Pilar Utrilla
- CIBER-EHD, Department of Pharmacology, IBS.GRANADA, Center for Biomedical Research (CIBM), University of Granada, Granada, Spain
| | | | | | | | - Maria Del Mar Contreras
- Department of Analytical Chemistry, Faculty of Sciences, University of Granada, Avenida Fuentenueva s/n, 18071 Granada, Spain; Research and Development Centre for Functional Food (CIDAF), Health-Science Technological Park, Avenida del Conocimiento 37, 18016 Granada, Spain
| | - Antonio Segura-Carretero
- Department of Analytical Chemistry, Faculty of Sciences, University of Granada, Avenida Fuentenueva s/n, 18071 Granada, Spain; Research and Development Centre for Functional Food (CIDAF), Health-Science Technological Park, Avenida del Conocimiento 37, 18016 Granada, Spain
| | - José Pérez-Palacio
- Fundación Centro de Excelencia en Investigación de Medicamentos Innovadores de Andalucía (MEDINA), Granada, Spain
| | - Caridad Diaz
- Fundación Centro de Excelencia en Investigación de Medicamentos Innovadores de Andalucía (MEDINA), Granada, Spain
| | - Noemí Vergara
- Fundación Centro de Excelencia en Investigación de Medicamentos Innovadores de Andalucía (MEDINA), Granada, Spain
| | - Francisca Vicente
- Fundación Centro de Excelencia en Investigación de Medicamentos Innovadores de Andalucía (MEDINA), Granada, Spain
| | - M Elena Rodriguez-Cabezas
- CIBER-EHD, Department of Pharmacology, IBS.GRANADA, Center for Biomedical Research (CIBM), University of Granada, Granada, Spain
| | - Julio Galvez
- CIBER-EHD, Department of Pharmacology, IBS.GRANADA, Center for Biomedical Research (CIBM), University of Granada, Granada, Spain.
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Nunes C, Teixeira N, Serra D, Freitas V, Almeida L, Laranjinha J. Red wine polyphenol extract efficiently protects intestinal epithelial cells from inflammation via opposite modulation of JAK/STAT and Nrf2 pathways. Toxicol Res (Camb) 2016; 5:53-65. [PMID: 30090326 PMCID: PMC6061778 DOI: 10.1039/c5tx00214a] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 10/01/2015] [Indexed: 12/17/2022] Open
Abstract
The development of therapeutic approaches combining efficacy and safety represents an important goal in intestinal inflammation research. Recently, evidence has supported dietary polyphenols as useful tools in the treatment and prevention of chronic inflammatory diseases, but the mechanisms of action are still poorly understood. We here reveal molecular mechanisms underlying the anti-inflammatory action of a non-alcoholic polyphenol red wine extract (RWE), operating at complementary levels via the Janus kinase/signal transducer and activator of transcription (JAK/STAT) and Nuclear factor-erythroid 2-related factor-2 (Nrf2) pathways. RWE significantly reduced the nuclear levels of phosphorylated STAT1 and also the cellular levels of phosphorylated JAK1 induced by cytokines, suppressing the JAK/STAT inflammatory signalling cascade. In turn, RWE increased the Nrf2 nuclear level, activating the Nrf2 pathway, leading not only to an up-regulation of the heme oxygenase-1 (HO-1) expression but also to an increase of the glutamate-cysteine ligase subunit catalytic (GCLc) gene expression, enhancing the GSH synthesis, thereby counteracting GSH depletion that occurs under inflammatory conditions. Overall, data indicate that the anti-inflammatory action of RWE is exerted at complementary levels, via suppression of the JAK/STAT inflammatory pathway and positive modulation of the activity of Nrf2. These results point to the potential use of the RWE as an efficient, readily available and inexpensive therapeutic strategy in the context of gastrointestinal inflammation.
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Affiliation(s)
- Carla Nunes
- Center for Neurosciences and Cell Biology and Faculty of Pharmacy , University of Coimbra , Health Sciences Campus , Azinhaga de Santa Comba , 3000-548 Coimbra , Portugal .
| | - Natércia Teixeira
- Department of Chemistry , Faculty of Sciences , University of Porto , Portugal
| | - Diana Serra
- Center for Neurosciences and Cell Biology and Faculty of Pharmacy , University of Coimbra , Health Sciences Campus , Azinhaga de Santa Comba , 3000-548 Coimbra , Portugal .
| | - Víctor Freitas
- Department of Chemistry , Faculty of Sciences , University of Porto , Portugal
| | - Leonor Almeida
- Center for Neurosciences and Cell Biology and Faculty of Pharmacy , University of Coimbra , Health Sciences Campus , Azinhaga de Santa Comba , 3000-548 Coimbra , Portugal .
| | - João Laranjinha
- Center for Neurosciences and Cell Biology and Faculty of Pharmacy , University of Coimbra , Health Sciences Campus , Azinhaga de Santa Comba , 3000-548 Coimbra , Portugal .
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Oxidative Stress and Carbonyl Lesions in Ulcerative Colitis and Associated Colorectal Cancer. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2016:9875298. [PMID: 26823956 PMCID: PMC4707327 DOI: 10.1155/2016/9875298] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 10/14/2015] [Accepted: 10/25/2015] [Indexed: 12/15/2022]
Abstract
Oxidative stress has long been known as a pathogenic factor of ulcerative colitis (UC) and colitis-associated colorectal cancer (CAC), but the effects of secondary carbonyl lesions receive less emphasis. In inflammatory conditions, reactive oxygen species (ROS), such as superoxide anion free radical (O2 (∙-)), hydrogen peroxide (H2O2), and hydroxyl radical (HO(∙)), are produced at high levels and accumulated to cause oxidative stress (OS). In oxidative status, accumulated ROS can cause protein dysfunction and DNA damage, leading to gene mutations and cell death. Accumulated ROS could also act as chemical messengers to activate signaling pathways, such as NF-κB and p38 MAPK, to affect cell proliferation, differentiation, and apoptosis. More importantly, electrophilic carbonyl compounds produced by lipid peroxidation may function as secondary pathogenic factors, causing further protein and membrane lesions. This may in turn exaggerate oxidative stress, forming a vicious cycle. Electrophilic carbonyls could also cause DNA mutations and breaks, driving malignant progression of UC. The secondary lesions caused by carbonyl compounds may be exceptionally important in the case of host carbonyl defensive system deficit, such as aldo-keto reductase 1B10 deficiency. This review article updates the current understanding of oxidative stress and carbonyl lesions in the development and progression of UC and CAC.
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Abstract
This review will focus on published human studies on oxidative stress and DNA damage in inflammatory bowel disease (IBD), both ulcerative colitis and Crohn's disease, assessing their role in the pathophysiology of these diseases. Search was performed over PubMed and ScienceDirect databases to identify relevant bibliography, using keywords including "oxidative stress," "DNA damage," "IBD," and "oxidative DNA damage." Whether as cause or effect, mechanisms underlying oxidative stress have the potential to condition the course of various pathologies, particularly those driven by inflammatory scenarios. IBDs are chronic inflammatory relapsing conditions. Oxidative stress has been associated with some of the characteristic clinical features exhibited in IBD, namely tissue injury and fibrosis, and also to the ulcerative colitis-associated colorectal cancer. The possible influence of oxidative stress over therapeutic behavior and response, as well as their contribution to the oxidative burden and consequences, is also addressed. Due to the high prevalence and incidence of IBD worldwide, and also to its associated morbidity, complications, and disease and treatment costs, it is of paramount importance to better understand the pathophysiology of these diseases.
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Anti-inflammatory effects of Brazilian ginseng (Pfaffia paniculata) on TNBS-induced intestinal inflammation: Experimental evidence. Int Immunopharmacol 2015. [DOI: 10.1016/j.intimp.2015.07.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Vassilyadi P, Harding SV, Nitschmann E, Wykes LJ. Experimental colitis and malnutrition differentially affect the metabolism of glutathione and related sulfhydryl metabolites in different tissues. Eur J Nutr 2015. [DOI: 10.1007/s00394-015-0995-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Lipidomic Profiling in Inflammatory Bowel Disease: Comparison Between Ulcerative Colitis and Crohn's Disease. Inflamm Bowel Dis 2015; 21:1511-8. [PMID: 25895111 DOI: 10.1097/mib.0000000000000394] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
BACKGROUND Inflammatory bowel disease (IBD), which encompasses ulcerative colitis (UC) and Crohn's disease (CD), is believed to be caused by abnormal host immune responses to the intestinal microbiome. However, the precise etiology of IBD remains unknown. Lipid metabolism and signaling are suggested to play important roles in inflammation with significant implications for IBD. In this study, we aimed to characterize lipidomic profiles in IBD with comparison between healthy controls, UC, and CD. METHODS Patients with IBD (n = 40, UC: 16 and CD: 24) and age- and gender-matched healthy volunteers (n = 84) were recruited. Plasma lipid profiles containing 333 lipid species were measured using electrospray ionization-tandem mass spectrometry. RESULTS A total of 86 individual lipid species were significantly changed in CD compared with controls (78 decreased while 8 increased), with the majority belonging to the ether lipids including the alkylphospholipids (alkylphosphatidylcholine and alkylphosphatidylethanolamine) and plasmalogens (alkenylphosphatidylcholine and alkenylphosphatidylethanolamine). Of these 86 lipid species, 33 remained significantly and negatively associated with CD after adjusting for age, sex, waist circumference, current smoking, and diastolic blood pressure in logistic regression. In contrast, only 5 lipid species significantly differed between UC and controls. CONCLUSIONS We demonstrate that a number of ether lipids (alkylphospholipid and plasmalogens) are significantly and negatively associated with CD. These alterations of lipid profiles particularly plasmalogens may contribute to the pathogenesis of IBD.
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Kuo B, Bhasin M, Jacquart J, Scult MA, Slipp L, Riklin EIK, Lepoutre V, Comosa N, Norton BA, Dassatti A, Rosenblum J, Thurler AH, Surjanhata BC, Hasheminejad NN, Kagan L, Slawsby E, Rao SR, Macklin EA, Fricchione GL, Benson H, Libermann TA, Korzenik J, Denninger JW. Genomic and clinical effects associated with a relaxation response mind-body intervention in patients with irritable bowel syndrome and inflammatory bowel disease. PLoS One 2015; 10:e0123861. [PMID: 25927528 PMCID: PMC4415769 DOI: 10.1371/journal.pone.0123861] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Introduction Irritable Bowel Syndrome (IBS) and Inflammatory Bowel Disease (IBD) can profoundly affect quality of life and are influenced by stress and resiliency. The impact of mind-body interventions (MBIs) on IBS and IBD patients has not previously been examined. Methods Nineteen IBS and 29 IBD patients were enrolled in a 9-week relaxation response based mind-body group intervention (RR-MBI), focusing on elicitation of the RR and cognitive skill building. Symptom questionnaires and inflammatory markers were assessed pre- and post-intervention, and at short-term follow-up. Peripheral blood transcriptome analysis was performed to identify genomic correlates of the RR-MBI. Results Pain Catastrophizing Scale scores improved significantly post-intervention for IBD and at short-term follow-up for IBS and IBD. Trait Anxiety scores, IBS Quality of Life, IBS Symptom Severity Index, and IBD Questionnaire scores improved significantly post-intervention and at short-term follow-up for IBS and IBD, respectively. RR-MBI altered expression of more genes in IBD (1059 genes) than in IBS (119 genes). In IBD, reduced expression of RR-MBI response genes was most significantly linked to inflammatory response, cell growth, proliferation, and oxidative stress-related pathways. In IBS, cell cycle regulation and DNA damage related gene sets were significantly upregulated after RR-MBI. Interactive network analysis of RR-affected pathways identified TNF, AKT and NF-κB as top focus molecules in IBS, while in IBD kinases (e.g. MAPK, P38 MAPK), inflammation (e.g. VEGF-C, NF-κB) and cell cycle and proliferation (e.g. UBC, APP) related genes emerged as top focus molecules. Conclusions In this uncontrolled pilot study, participation in an RR-MBI was associated with improvements in disease-specific measures, trait anxiety, and pain catastrophizing in IBS and IBD patients. Moreover, observed gene expression changes suggest that NF-κB is a target focus molecule in both IBS and IBD—and that its regulation may contribute to counteracting the harmful effects of stress in both diseases. Larger, controlled studies are needed to confirm this preliminary finding. Trial Registration ClinicalTrials.Gov NCT02136745
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Affiliation(s)
- Braden Kuo
- Gastrointestinal Unit, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Manoj Bhasin
- Division of Interdisciplinary Medicine & Biotechnology, and Genomics, Proteomics, Bioinformatics and Systems Biology Center, Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States of America
- Benson-Henry Institute for Mind Body Medicine, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Jolene Jacquart
- Benson-Henry Institute for Mind Body Medicine, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Matthew A. Scult
- Benson-Henry Institute for Mind Body Medicine, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Lauren Slipp
- Benson-Henry Institute for Mind Body Medicine, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Eric Isaac Kagan Riklin
- Benson-Henry Institute for Mind Body Medicine, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Veronique Lepoutre
- Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Nicole Comosa
- Gastrointestinal Unit, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Beth-Ann Norton
- Gastrointestinal Unit, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Allison Dassatti
- Gastrointestinal Unit, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Jessica Rosenblum
- Gastrointestinal Unit, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Andrea H. Thurler
- Gastrointestinal Unit, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Brian C. Surjanhata
- Gastrointestinal Unit, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Nicole N. Hasheminejad
- Benson-Henry Institute for Mind Body Medicine, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Leslee Kagan
- Benson-Henry Institute for Mind Body Medicine, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Ellen Slawsby
- Benson-Henry Institute for Mind Body Medicine, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Sowmya R. Rao
- Department of Quantitative Health Sciences, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
- Center for Healthcare Organization and Implementation Research (CHOIR), Bedford VA Medical Center, Bedford, Massachusetts, United States of America
| | - Eric A. Macklin
- MGH Biostatistics Center, Massachusetts General Hospital, Boston, MA, and Harvard Medical School, Boston, Massachusetts, United States of America
| | - Gregory L. Fricchione
- Benson-Henry Institute for Mind Body Medicine, Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Psychiatry, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Herbert Benson
- Benson-Henry Institute for Mind Body Medicine, Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Towia A. Libermann
- Division of Interdisciplinary Medicine & Biotechnology, and Genomics, Proteomics, Bioinformatics and Systems Biology Center, Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States of America
- Benson-Henry Institute for Mind Body Medicine, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Joshua Korzenik
- Gastrointestinal Unit, Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - John W. Denninger
- Benson-Henry Institute for Mind Body Medicine, Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Psychiatry, Massachusetts General Hospital, Boston, Massachusetts, United States of America
- * E-mail:
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Nunes de Melo M, Alberto Lira Soares L, Raquel da Costa Porto C, Antunes de Araújo A, das Graças Almeida M, Pereira de Souza T, Petrovick PR, Fernandes de Araújo R, Guerra GCB. Spray-dried extract of Phyllanthus niruri
L. reduces mucosal damage in rats with intestinal inflammation. J Pharm Pharmacol 2015; 67:1107-18. [DOI: 10.1111/jphp.12408] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Accepted: 02/08/2015] [Indexed: 12/11/2022]
Abstract
Abstract
Phyllanthus niruri L. belongs to the Euphorbiaceae, and is known by the common name of ‘stonebreaker’ in Brazil. Some species within the Phyllanthus genus are widely used in traditional medicine to counteract different types of anti-inflammatory diseases.
Objectives
In this study, the preventive intestinal anti-inflammatory activity of spray-dried extract of P. niruri (SDEPn) was tested in the model of acetic acid (10%)-induced ulcerative colitis in the rat.
Methods
Colitis animals were given orally at doses 25, 100 and 200 mg/kg. Colons tissue was analysed by macroscopic score, by histopathology score, by the immunohistochemical examination of tumour necrosis factor alpha, p53 and interferon gamma; by spectroscopic ultraviolet-visible spectrophotometry (UV/VIS) analysis of the levels of myeloperoxidase, malonaldehyde and total glutathione.
Key Findings/Result
Pretreatment of the extract to colitic rats significantly attenuated colonic macroscopic damage induced by acetic acid (P < 0.01). Spray-dried extract of P. niruri prevented glutathione depletion (P < 0.001) and malondialdehyde levels (P < 0.05) declined. Spray-dried extract of P. niruri significantly reduced microscopic damage to tissues, such as leukocyte infiltration accompanied by a significant reduction in myeloperoxidase activity (P < 0.5). Immunohistochemistry revealed a decline in the TNF-α, IFN-γ and p53 protein (P < 0.05).
Conclusion
Spray-dried extract of P. niruri has a beneficial effect in the acute phase of acetic acid-induced colitis in the rat, which is probably related to its antioxidant properties.
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Affiliation(s)
| | | | | | - Aurigena Antunes de Araújo
- Pharmaceutical Science, Federal University of Rio Grande do Norte, Natal, Brazil
- Public Health, Federal University of Rio Grande do Norte, Natal, Brazil
| | | | | | - Pedro Ros Petrovick
- Faculty of Pharmacy, Federal University of do Rio Grande do Sul, Porto Alegre, Brazil
| | - Raimundo Fernandes de Araújo
- Health Science, Functional and Structural Biology, Departament of Morphology, Federal University of Rio Grande do Norte, Natal, Brazil
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Prevention of oxidative stress, inflammation and mitochondrial dysfunction in the intestine by different cranberry phenolic fractions. Clin Sci (Lond) 2014; 128:197-212. [PMID: 25069567 DOI: 10.1042/cs20140210] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Cranberry fruit has been reported to have high antioxidant effectiveness that is potentially linked to its richness in diversified polyphenolic content. The aim of the present study was to determine the role of cranberry polyphenolic fractions in oxidative stress (OxS), inflammation and mitochondrial functions using intestinal Caco-2/15 cells. The combination of HPLC and UltraPerformance LC®-tandem quadrupole (UPLC-TQD) techniques allowed us to characterize the profile of low, medium and high molecular mass polyphenolic compounds in cranberry extracts. The medium molecular mass fraction was enriched with flavonoids and procyanidin dimers whereas procyanidin oligomers (DP > 4) were the dominant class of polyphenols in the high molecular mass fraction. Pre-incubation of Caco-2/15 cells with these cranberry extracts prevented iron/ascorbate-mediated lipid peroxidation and counteracted lipopolysaccharide-mediated inflammation as evidenced by the decrease in pro-inflammatory cytokines (TNF-α and interleukin-6), cyclo-oxygenase-2 and prostaglandin E2. Cranberry polyphenols (CP) fractions limited both nuclear factor κB activation and Nrf2 down-regulation. Consistently, cranberry procyanidins alleviated OxS-dependent mitochondrial dysfunctions as shown by the rise in ATP production and the up-regulation of Bcl-2, as well as the decline of protein expression of cytochrome c and apoptotic-inducing factor. These mitochondrial effects were associated with a significant stimulation of peroxisome-proliferator-activated receptor γ co-activator-1-α, a central inducing factor of mitochondrial biogenesis and transcriptional co-activator of numerous downstream mediators. Finally, cranberry procyanidins forestalled the effect of iron/ascorbate on the protein expression of mitochondrial transcription factors (mtTFA, mtTFB1, mtTFB2). Our findings provide evidence for the capacity of CP to reduce intestinal OxS and inflammation while improving mitochondrial dysfunction.
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Shafiei M, Dunn KA, Chipman H, Gu H, Bielawski JP. BiomeNet: a Bayesian model for inference of metabolic divergence among microbial communities. PLoS Comput Biol 2014; 10:e1003918. [PMID: 25412107 PMCID: PMC4238953 DOI: 10.1371/journal.pcbi.1003918] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Accepted: 09/16/2014] [Indexed: 02/07/2023] Open
Abstract
Metagenomics yields enormous numbers of microbial sequences that can be assigned a metabolic function. Using such data to infer community-level metabolic divergence is hindered by the lack of a suitable statistical framework. Here, we describe a novel hierarchical Bayesian model, called BiomeNet (Bayesian inference of metabolic networks), for inferring differential prevalence of metabolic subnetworks among microbial communities. To infer the structure of community-level metabolic interactions, BiomeNet applies a mixed-membership modelling framework to enzyme abundance information. The basic idea is that the mixture components of the model (metabolic reactions, subnetworks, and networks) are shared across all groups (microbiome samples), but the mixture proportions vary from group to group. Through this framework, the model can capture nested structures within the data. BiomeNet is unique in modeling each metagenome sample as a mixture of complex metabolic systems (metabosystems). The metabosystems are composed of mixtures of tightly connected metabolic subnetworks. BiomeNet differs from other unsupervised methods by allowing researchers to discriminate groups of samples through the metabolic patterns it discovers in the data, and by providing a framework for interpreting them. We describe a collapsed Gibbs sampler for inference of the mixture weights under BiomeNet, and we use simulation to validate the inference algorithm. Application of BiomeNet to human gut metagenomes revealed a metabosystem with greater prevalence among inflammatory bowel disease (IBD) patients. Based on the discriminatory subnetworks for this metabosystem, we inferred that the community is likely to be closely associated with the human gut epithelium, resistant to dietary interventions, and interfere with human uptake of an antioxidant connected to IBD. Because this metabosystem has a greater capacity to exploit host-associated glycans, we speculate that IBD-associated communities might arise from opportunist growth of bacteria that can circumvent the host's nutrient-based mechanism for bacterial partner selection. Metagenomic studies of microbial communities yield enormous numbers of gene sequences that have a known enzymatic function, and thus have potential to contribute to community-level metabolic activities. Ecologically divergent microbial communities are presumed to differ in metabolic repertoire and function, but detecting such differences is challenging because the required analytical methodology is complex. Here, we present a novel Bayesian model suitable for this task. Our model, BiomeNet, does not assume that microbiome samples of a certain type are the same; rather, a sample is modeled as a unique mixture of complex metabolic systems referred to as “metabosystems”. The metabosystems are composed of mixtures of subnetworks, where subnetworks are mixtures of reactions related by function. Application of BiomeNet to human gut metagenomes revealed a metabosystem with greater prevalence among IBD patients. We inferred that this metabosystem is likely to be closely associated with the human gut epithelium, resistant to dietary interventions, and interfere with human uptake of an important antioxidant, possibly contributing to gut inflammation associated with IBD.
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Affiliation(s)
- Mahdi Shafiei
- Department of Mathematics & Statistics, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Katherine A. Dunn
- Department of Biology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Hugh Chipman
- Department of Mathematics & Statistics, Acadia University, Wolfville, Nova Scotia, Canada
| | - Hong Gu
- Department of Mathematics & Statistics, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Joseph P. Bielawski
- Department of Mathematics & Statistics, Dalhousie University, Halifax, Nova Scotia, Canada
- Department of Biology, Dalhousie University, Halifax, Nova Scotia, Canada
- * E-mail:
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Chen X, Zhai X, Shi J, Liu WW, Tao H, Sun X, Kang Z. Lactulose mediates suppression of dextran sodium sulfate-induced colon inflammation by increasing hydrogen production. Dig Dis Sci 2013; 58:1560-8. [PMID: 23371012 DOI: 10.1007/s10620-013-2563-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Accepted: 01/03/2013] [Indexed: 01/15/2023]
Abstract
BACKGROUND Molecular hydrogen (H2) is a potent antioxidant and able to protect organs from oxidative stress injuries. Orally administered lactulose, a potent H2 inducer, is digested by colon microflora and significantly increases H2 production, indicating its potential anti-inflammatory action. OBJECTIVE To evaluate the anti-inflammatory effects of lactulose on dextran sodium sulfate (DSS)-induced colitis in mice. METHODS Mice were randomly assigned into seven groups, receiving regular distilled water, H2-rich saline (peritoneal injection), DSS, oral lactulose (0.1, 0.15, 0.2 ml/10 g, respectively), and lactulose (0.2 ml/10 g) + oral antibiotics. The mouse model of human ulcerative colitis was established by supplying mice with water containing DSS. The H2 breath test was used to determine the exhaled H2 concentration. Body weight, colitis score, colon length, pathological features and tumor necrosis factor alpha (TNF-α), interleukin-1β (IL-1β), maleic dialdehyde (MDA) and marrow peroxidase (MPO) levels in colon lesions were evaluated. RESULTS After 7 days, DSS-induced loss of body weight, increase of colitis score, shortening of colon length, pathological changes and elevated levels of TNF-α, IL-1β, MDA, and MPO in colon lesions, were significantly suppressed by oral lactulose administration and intraperitoneally injected H2-rich saline. Ingestion of antibiotics significantly compromised the anti-inflammatory effects of lactulose. The H2 breath test showed that lactulose administration significantly induced hydrogen production and that antibiotics administration could inhibit H2 production. CONCLUSION Lactulose can prevent the development of DSS-induced colitis and alleviate oxidative stress in the colon, as measured by MDA and MPO, probably by increasing endogenous H2 production.
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Affiliation(s)
- Xiao Chen
- Graduate Management Unit, Shanghai Changhai Hospital, Second Military Medical University, Shanghai, 200433, People's Republic of China
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Witaicenis A, Luchini A, Hiruma-Lima C, Felisbino S, Justulin L, Garrido-Mesa N, Utrilla P, Gálvez J, Di Stasi L. Mechanism and Effect of Esculetin in an Experimental Animal Model of Inflammatory Bowel Disease. EUR J INFLAMM 2013. [DOI: 10.1177/1721727x1301100213] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- A. Witaicenis
- Department of Pharmacology, Institute of Biosciences, Univ Estadual Paulista - UNESP, Botucatu, SP, Brazil
| | - A.C. Luchini
- Department of Pharmacology, Institute of Biosciences, Univ Estadual Paulista - UNESP, Botucatu, SP, Brazil
| | - C.A. Hiruma-Lima
- Department of Physiology, Institute of Biosciences, Univ Estadual Paulista - UNESP, Botucatu, SP, Brazil
| | - S.L. Felisbino
- Department of Morphology, Institute of Biosciences, Univ Estadual Paulista - UNESP, Botucatu, SP, Brazil
| | - L.A. Justulin
- Department of Morphology, Institute of Biosciences, Univ Estadual Paulista - UNESP, Botucatu, SP, Brazil
| | - N. Garrido-Mesa
- Department of Pharmacology, Centre for Biomedical Research, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBER-EHD), University of Granada, Granada, Spain
| | - P. Utrilla
- Department of Pharmacology, Centre for Biomedical Research, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBER-EHD), University of Granada, Granada, Spain
| | - J. Gálvez
- Department of Pharmacology, Centre for Biomedical Research, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBER-EHD), University of Granada, Granada, Spain
| | - L.C. Di Stasi
- Department of Pharmacology, Institute of Biosciences, Univ Estadual Paulista - UNESP, Botucatu, SP, Brazil
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Bouzid D, Gargouri B, Mansour RB, Amouri A, Tahri N, Lassoued S, Masmoudi H. Oxidative stress markers in intestinal mucosa of Tunisian inflammatory bowel disease patients. Saudi J Gastroenterol 2013; 19:131-5. [PMID: 23680711 PMCID: PMC3709376 DOI: 10.4103/1319-3767.111956] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
UNLABELLED BACKGROUND / AIMS: Inflammatory bowel diseases (IBDs), Crohn's disease (CrD) and ulcerative colitis (UC), are chronic gastrointestinal inflammatory disorders. The precise etiology of IBD remains unclear, and it is thought that interactions among various factors, including, genetic factors, the host immune system and environmental factors, cause disruption of intestinal homeostasis, leading to dysregulated inflammatory responses of the gut. As inflammation is intimately related to formation of reactive intermediates, including, reactive oxygen species, oxidative stress has been proposed as a mechanism underlying the pathophysiology of IBD. The purpose of this study is to examine the lipid peroxidation, protein oxidation and anti-oxidative profile in Tunisian IBD. MATERIALS AND METHODS Malondialdehyde (MDA), conjugated dienes (CD), protein thiol levels, as well as the catalase (CAT) activity were evaluated in intestinal biopsies of 17 patients affected by IBD (12 CrD and 5 UC) and 12 healthy control individuals. RESULTS Oxidative stress was confirmed in these two types of disease biopsies as compared to controls. MDA and CD levels were significantly increased in both UC and CrD patients' biopsies as compared to controls' biopsies ( P < 0.001). CAT activity was similar in UC and CrD biopsies' and was not significantly increased in IBD patients' biopsies compared with controls' biopsies ( P > 0.05). Anon-significant decrease in thiol (SH) level was observed in both UC and CrD patients' biopsies compared with controls' biopsies ( P > 0.05). CONCLUSION Increased levels of MDA and CD in IBD patients' biopsies underline the implication of oxidative stress in the physiopathology of IBD.
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Affiliation(s)
- Dorra Bouzid
- Department of Immunology, Medicine School and Habib Bourguiba Hospital, Sfax, Tunisia.
| | - Bochra Gargouri
- Human Pathologies and Oxidative Stress Unit, Higher Institute of Biotechnology of Sfax, Sfax, Tunisia
| | - Riadh Ben Mansour
- Human Pathologies and Oxidative Stress Unit, Higher Institute of Biotechnology of Sfax, Sfax, Tunisia
| | - Ali Amouri
- Department of Gastroenterology, Hédi Chaker Hospital, Sfax, Tunisia
| | - Nabil Tahri
- Department of Gastroenterology, Hédi Chaker Hospital, Sfax, Tunisia
| | - Saloua Lassoued
- Human Pathologies and Oxidative Stress Unit, Higher Institute of Biotechnology of Sfax, Sfax, Tunisia
| | - Hatem Masmoudi
- Department of Immunology, Medicine School and Habib Bourguiba Hospital, Sfax, Tunisia
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Zhu H, Li YR. Oxidative stress and redox signaling mechanisms of inflammatory bowel disease: updated experimental and clinical evidence. Exp Biol Med (Maywood) 2012; 237:474-80. [PMID: 22442342 DOI: 10.1258/ebm.2011.011358] [Citation(s) in RCA: 303] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Inflammatory bowel disease (IBD) comprises primarily the chronic relapsing inflammatory disorders, Crohn's disease and ulcerative colitis, with the former affecting any part of the gastrointestinal tract and the latter mainly afflicting the colon. The precise etiology of IBD remains unclear, and it is thought that interactions among various factors, including genetic factors, the host immune system and environmental factors, cause disruption of intestinal homeostasis, leading to dysregulated inflammatory responses of the gut. As inflammation is intimately related to formation of reactive intermediates, including reactive oxygen and nitrogen species (ROS/RNS), oxidative stress has been proposed as a mechanism underlying the pathophysiology of IBD. This review is intended to summarize succinctly recent new experimental and clinical evidence supporting oxidative stress as a pathophysiological component of IBD and point to the potential of using antioxidant compounds as promising therapeutic modalities of human IBD. The sources of ROS/RNS and the redox signaling mechanism underlying oxidative stress and inflammation in IBD are discussed to provide insight into the molecular basis of oxidative stress as a pathophysiological factor in IBD.
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Affiliation(s)
- Hong Zhu
- Laboratory of Molecular and Cellular Pharmacology and Toxicology, Department of Pharmacology, EVCOM, Virginia Tech Corporate Research Center RBII, Blacksburg, VA 24060, USA.
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Abstract
The intestinal tract, known for its capability for self-renew, represents the first barrier of defence between the organism and its luminal environment. The thiol/disulfide redox systems comprising the glutathione/glutathione disulfide (GSH/GSSG), cysteine/cystine (Cys/CySS) and reduced and oxidized thioredoxin (Trx/TrxSS) redox couples play important roles in preserving tissue redox homeostasis, metabolic functions, and cellular integrity. Control of the thiol-disulfide status at the luminal surface is essential for maintaining mucus fluidity and absorption of nutrients, and protection against chemical-induced oxidant injury. Within intestinal cells, these redox couples preserve an environment that supports physiological processes and orchestrates networks of enzymatic reactions against oxidative stress. In this review, we focus on the intestinal redox and antioxidant systems, their subcellular compartmentation, redox signalling and epithelial turnover, and contribution of luminal microbiota, key aspects that are relevant to understanding redox-dependent processes in gut biology with implications for degenerative digestive disorders, such as inflammation and cancer.
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Affiliation(s)
- Magdalena L Circu
- Department of Molecular & Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, LA, USA
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Aviello G, Canadanovic-Brunet JM, Milic N, Capasso R, Fattorusso E, Taglialatela-Scafati O, Fasolino I, Izzo AA, Borrelli F. Potent antioxidant and genoprotective effects of boeravinone G, a rotenoid isolated from Boerhaavia diffusa. PLoS One 2011; 6:e19628. [PMID: 21625488 PMCID: PMC3098844 DOI: 10.1371/journal.pone.0019628] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2010] [Accepted: 04/11/2011] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND AND AIMS Free radicals are implicated in the aetiology of some gastrointestinal disorders such as gastric ulcer, colorectal cancer and inflammatory bowel disease. In the present study we investigated the antioxidant and genoprotective activity of some rotenoids (i.e. boeravinones) isolated from the roots of Boerhaavia diffusa, a plant used in the Ayurvedic medicine for the treatment of diseases affecting the gastrointestinal tract. METHODS/PRINCIPAL FINDINGS Antioxidant activity has been evaluated using both chemical (Electron Spin Resonance spectroscopy, ESR) and Caco-2 cells-based (TBARS and ROS) assays. DNA damage was evaluated by Comet assay, while pERK(1/2) and phospho-NF-kB p65 levels were estimated by western blot. Boeravinones G, D and H significantly reduced the signal intensity of ESR induced by hydroxyl radicals, suggesting a scavenging activity. Among rotenoids tested, boeravinone G exerted the most potent effect. Boeravinone G inhibited both TBARS and ROS formation induced by Fenton's reagent, increased SOD activity and reduced H(2)O(2)-induced DNA damage. Finally, boeravinone G reduced the levels of pERK(1) and phospho-NF-kB p65 (but not of pERK(2)) increased by Fenton's reagent. CONCLUSIONS It is concluded that boeravinone G exhibits an extraordinary potent antioxidant activity (significant effect in the nanomolar range). The MAP kinase and NF-kB pathways seem to be involved in the antioxidant effect of boeravinone G. Boeravinone G might be considered as lead compound for the development of drugs potentially useful against those pathologies whose aetiology is related to ROS-mediated injuries.
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Affiliation(s)
- Gabriella Aviello
- Department of Experimental Pharmacology, University of Naples Federico II, Naples, Italy
| | | | - Natasa Milic
- Department of Experimental Pharmacology, University of Naples Federico II, Naples, Italy
| | - Raffaele Capasso
- Department of Experimental Pharmacology, University of Naples Federico II, Naples, Italy
| | - Ernesto Fattorusso
- Department of Natural Products Chemistry, University of Naples Federico II, Naples, Italy
| | | | - Ines Fasolino
- Department of Experimental Pharmacology, University of Naples Federico II, Naples, Italy
| | - Angelo A. Izzo
- Department of Experimental Pharmacology, University of Naples Federico II, Naples, Italy
| | - Francesca Borrelli
- Department of Experimental Pharmacology, University of Naples Federico II, Naples, Italy
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Chen X, Zuo Q, Hai Y, Sun XJ. Lactulose: An indirect antioxidant ameliorating inflammatory bowel disease by increasing hydrogen production. Med Hypotheses 2011; 76:325-7. [DOI: 10.1016/j.mehy.2010.09.026] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2010] [Revised: 09/27/2010] [Accepted: 09/28/2010] [Indexed: 01/28/2023]
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Hoffman-Goetz L, Pervaiz N, Guan J. Voluntary exercise training in mice increases the expression of antioxidant enzymes and decreases the expression of TNF-alpha in intestinal lymphocytes. Brain Behav Immun 2009; 23:498-506. [PMID: 19486647 DOI: 10.1016/j.bbi.2009.01.015] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2008] [Revised: 01/20/2009] [Accepted: 01/26/2009] [Indexed: 11/19/2022] Open
Abstract
Acute exercise in mice induces intestinal lymphocyte (IL) apoptosis. Freewheel running reduces apoptosis and forced exercise training increases splenocyte antioxidant levels. The purpose of this study was to examine the effect of freewheel running and acute exercise on mouse IL numbers and concentrations of apoptosis and antioxidant proteins and pro-inflammatory cytokines in IL. Female C57BL/6 mice had access to in-cage running wheels (RW) or cages without wheels (NRW) for 16 weeks and were randomized at the end of training to no exercise control (TC) or to treadmill exercise with sacrifice after 90 min of running (TREAD; 30 min, 22 m min(-1); 30 min, 25 m min(-1); 30 min, 28 m min(-1); 2 degrees slope). IL were analyzed for pro-(caspase 3 and 7) and anti-(Bcl-2) apoptotic proteins, endogenous antioxidants (glutathione peroxidase: GPx; catalase: CAT) and the pro-inflammatory cytokine, TNF-alpha. RW mice had higher cytochrome oxidase (p<0.001) and citrate synthase (p<0.01) activities in plantaris and soleus muscles and higher GPx and CAT expression in IL (p<0.05) (indicative of training) compared with NRW mice. TNF-alpha expression was lower (p<0.05) and IL numbers higher (p<0.05) in RW vs. NRW mice. No training effect was observed for apoptotic protein expression, although TREAD resulted in higher caspase and lower Bcl-2. These results suggest that freewheel running in mice for 16 weeks enhances antioxidant and reduces TNF-alpha expression in IL but does not reduce pro-apoptotic protein expression after acute exercise. Results are discussed in terms of implications for inflammatory bowel diseases where apoptotic proteins and TNF-alpha levels are elevated.
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Affiliation(s)
- L Hoffman-Goetz
- Department of Health Studies and Gerontology, Faculty of Applied Health Sciences, University of Waterloo, 200 University Avenue West, Waterloo, Ont., Canada.
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Aminosalicylic acid conjugates of EDTA as potential anti-inflammatory pro-drugs: synthesis, copper chelation and superoxide dismutase-like activities. TRANSIT METAL CHEM 2007. [DOI: 10.1007/s11243-007-9031-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Gommeaux J, Cano C, Garcia S, Gironella M, Pietri S, Culcasi M, Pébusque MJ, Malissen B, Dusetti N, Iovanna J, Carrier A. Colitis and colitis-associated cancer are exacerbated in mice deficient for tumor protein 53-induced nuclear protein 1. Mol Cell Biol 2007; 27:2215-28. [PMID: 17242209 PMCID: PMC1820489 DOI: 10.1128/mcb.01454-06] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Tumor protein 53-induced nuclear protein 1 (TP53INP1) is an antiproliferative and proapoptotic protein involved in cell stress response. To address its physiological roles in colorectal cancer and colitis, we generated and tested the susceptibility of Trp53inp1-deficient mice to the development of colorectal tumors induced by injection of the carcinogen azoxymethane followed by dextran sulfate sodium (DSS)-induced chronic colitis. Trp53inp1-deficient mice showed an increased incidence and multiplicity of tumors compared to those of wild-type (WT) mice. Furthermore, acute colitis induced by DSS treatment was more severe in Trp53inp1-deficient mice than in WT mice. Treatment with the antioxidant N-acetylcysteine prevented colitis and colitis-associated tumorigenesis more efficiently in WT mice than in Trp53inp1-deficient mice, suggesting a higher oxidative load in the latter. Consistently, we demonstrated by electron spin resonance and spin trapping that colons derived from deficient mice produced more free radicals than those of the WT during colitis and that the basal blood level of the antioxidant ascorbate was decreased in Trp53inp1-deficient mice. Collectively, these results indicate that the oxidative load is higher in Trp53inp1-deficient mice than in WT mice, generating a more-severe DSS-induced colitis, which favors development of colorectal tumors in Trp53inp1-deficient mice. Therefore, TP53INP1 is a potential target for the prevention of colorectal cancer in patients with inflammatory bowel disease.
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Affiliation(s)
- Julien Gommeaux
- INSERM, U624 Stress cellulaire, 13288 Marseille Cedex 9, France
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