Abstract:
BACKGROUND:Intestinal inflammation produces an induction of alkaline phosphatase (AP) activity that is attributable in part to augmented expression, accompanied by a change in isoform, in epithelial cells. METHODS:This study focuses on induction of AP in intestinal epithelial cells in vitro. RESULTS:Treatment with the oxidants H2O2, monochloramine, or tButOOH increases AP activity in vitro in Caco-2, HT29, and IEC18 cells. We selected IEC18 cells for further testing. Basal AP activity in IEC18 cells is of the tissue-nonspecific (bone-liver-kidney) type, as indicated by Northern and Western blot analysis. Oxidative stress augments AP activity and the sensitivity of the enzyme to levamisole, homoarginine, and heat in IEC18 cells. Increased immunoreactivity to tissue-nonspecific AP antibodies suggests an isoform shift from liver to either kidney or bone type. This effect occurs without changes at the mRNA level and is sensitive to tunicamycin, an inhibitor of N-glycosylation, and neuraminidase digestion. Saponin and deoxycholate produce similar effects to oxidants. Butyrate but not proinflammatory cytokines or LPS can induce a similar effect but without toxicity. The AP increase is not prevented by modulators of the MAPK, NF-κB, calcium, and cyclic adenosine monophosphate (cAMP) pathways, and is actually enhanced by actinomycin D via higher cell stress. CONCLUSIONS:Oxidative stress causes a distinct increase in enterocyte AP activity together with cell toxicity via changes in the glycosylation of the enzyme that correspond to a shift in isotype within the tissue-nonspecific paradigm. We speculate that this may have physiological implication for gut defense.
journal_name
Inflamm Bowel Disjournal_title
Inflammatory bowel diseasesauthors
López-Posadas R,González R,Ballester I,Martínez-Moya P,Romero-Calvo I,Suárez MD,Zarzuelo A,Martínez-Augustin O,Sánchez de Medina Fdoi
10.1002/ibd.21381subject
Has Abstractpub_date
2011-02-01 00:00:00pages
543-56issue
2eissn
1078-0998issn
1536-4844journal_volume
17pub_type
杂志文章abstract:BACKGROUND:VSL#3 is a probiotic compound that has been used in the treatment of inflammatory bowel disease. T-cell protein tyrosine phosphatase (TCPTP) is the protein product of the inflammatory bowel disease candidate gene, PTPN2, and we have previously shown that it protects epithelial barrier function. The aim of th...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
doi:10.1097/MIB.0000000000000954
更新日期:2016-12-01 00:00:00
abstract:BACKGROUND:There is limited contemporary population-based evidence on adverse birth outcomes and pregnancy-related complications for women with inflammatory bowel disease (IBD). This study provides such estimates of these risks and assesses variation by IBD type and surgical interventions. METHODS:We calculated the pr...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
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更新日期:2016-07-01 00:00:00
abstract:BACKGROUND:The mechanisms responsible for the pathogenesis of peripheral arthropathies (PA) in Crohn's disease (CD) are largely unknown, although many studies indicate that genetic and environmental factors are likely to contribute to risk. METHODS:Because variants in the Fc receptor-like 3 (FcRL3) gene have recently ...
journal_title:Inflammatory bowel diseases
pub_type: 临床试验,杂志文章
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abstract:BACKGROUND:The women's health aspect of inflammatory bowel disease (IBD) is a newer area of study; childbearing issues have received little attention despite the fact that IBD affects women predominantly during their childbearing years. The aim of this study was to better understand patients' considerations about pregn...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
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更新日期:2007-05-01 00:00:00
abstract:BACKGROUND:Evaluating structural damage using imaging is essential for the evaluation of small intestinal Crohn's disease (CD), but it is limited by potential interobserver variation. We compared the agreement of enterography-based bowel damage measurements collected by experienced radiologists and a semi-automated ima...
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abstract:BACKGROUND:Inflammatory bowel disease (IBD)-associated dysbiosis is characterized by a loss of Faecalibacterium prausnitzii, whose supernatant exerts an anti-inflammatory effect. However, the anti-inflammatory substances in F. prausnitzii supernatant and the mechanism in ameliorating colitis in IBD have not yet been fu...
journal_title:Inflammatory bowel diseases
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更新日期:2018-08-16 00:00:00
abstract:BACKGROUND:Guidelines mandate screening for latent tuberculosis infection (LTBI) prior to anti-tumor necrosis factor (anti-TNF) therapy in patients with inflammatory bowel disease (IBD). However, many are already on immunosuppressive therapy (IST) that may affect the precision of the Tuberculin skin test (TST). Our aim...
journal_title:Inflammatory bowel diseases
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journal_title:Inflammatory bowel diseases
pub_type: 杂志文章,多中心研究
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更新日期:2016-04-01 00:00:00
abstract:BACKGROUND:Immunosuppressive therapy with anti-TNF-alpha antibodies is effective in patients with inflammatory bowel disease (IBD). However, there is an increased risk for infections associated with this therapy. METHODS:Here, we report the case of a 58-year-old patient with Crohn's disease (CD) treated with steroids ...
journal_title:Inflammatory bowel diseases
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journal_title:Inflammatory bowel diseases
pub_type: 杂志文章,评审
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journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
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abstract::: We report our initial characterization of the immune system in C3H/HeJBir mice that spontaneously develop perianal ulceration. Analysis of lymphokine production by mucosal and systemic lymphoid cells obtained from these mice revealed higher levels of interleukin (IL)4 in supernatants of in vitro stimulated Peyer's p...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
doi:
更新日期:1997-04-01 00:00:00
abstract:BACKGROUND:Little knowledge exists about the association between anti-tumor necrosis factor-alpha (anti-TNF-α) therapy for inflammatory bowel disease during late pregnancy and adverse birth outcomes. We aimed to examine whether treatment with anti-TNF-α during the third trimester affected preterm birth and low birth we...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
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更新日期:2017-11-01 00:00:00
abstract:BACKGROUND:The majority of studies concerning the clinical course and prognosis in ulcerative colitis (UC) are old, retrospective in design, or hospital based. We aimed to identify clinical course and prognosis in a prospective, population-based follow-up study MATERIALS AND METHODS:Patients diagnosed with inflammator...
journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
doi:10.1097/01.MIB.0000225339.91484.fc
更新日期:2006-07-01 00:00:00
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journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
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更新日期:2019-01-01 00:00:00
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journal_title:Inflammatory bowel diseases
pub_type: 杂志文章,评审
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更新日期:2012-06-01 00:00:00
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journal_title:Inflammatory bowel diseases
pub_type: 杂志文章,收录出版
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更新日期:2010-05-01 00:00:00
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journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
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更新日期:2016-04-01 00:00:00
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journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
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journal_title:Inflammatory bowel diseases
pub_type: 杂志文章,meta分析,评审
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journal_title:Inflammatory bowel diseases
pub_type: 杂志文章
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更新日期:2011-01-01 00:00:00
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pub_type: 杂志文章,随机对照试验
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更新日期:2013-05-01 00:00:00
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pub_type: 杂志文章,评审
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更新日期:2008-02-01 00:00:00
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更新日期:2020-08-20 00:00:00
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pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:2017-03-01 00:00:00
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journal_title:Inflammatory bowel diseases
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doi:
更新日期:1996-10-01 00:00:00
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journal_title:Inflammatory bowel diseases
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更新日期:2007-01-01 00:00:00
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journal_title:Inflammatory bowel diseases
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