Abstract:
BACKGROUND:The receptor for formylated peptides, formyl peptide receptor 1 (FPR1), potently activates and serves as a chemoattractant receptor for neutrophils. AIM:Given the abundance of neutrophils in the inflamed colon, our aim was to determine if the FPR1 mediates colonic neutrophil migration, using the dextran sodium sulfate (DDS)-induced model of colitis. METHODS:Formyl peptide receptor 1 gene-deficient mice were administered DDS in drinking water for a single 5-day period (acute) or in two 5-day periods separated by 16 days (chronic). At the end of the treatment their colons were excised, measured, and prepared for histological evaluation. RESULTS:FPR1(-/-) mice experienced less severe acute colonic pathology than C57BL/6 (wildtype) mice. The opposite was observed following the second colitis cycle, with FPR1(-/-) mice developing worse pathology than wildtype mice. Both strains had similar numbers of infiltrating neutrophils in ulcerated areas of the colon after a single DSS cycle, but FPR1(-/-) mice had significantly more neutrophils in the ulcerated mucosa after two cycles. There was no difference in the capacity of neutrophils from each strain to migrate to chemoattractants. Since the FPR1(-/-) mice had larger ulcers compared to the wildtype mice, we propose that the FPR1(-/-) mice failed to recover at the same rate as wildtype mice. This apparent difference in restitution could not be attributed to observable differences in annexin A1. CONCLUSIONS:We conclude that neutrophil migration into the inflamed mouse colon does not depend on FPR1 but that FPR1 contributes in other pathological mechanisms that are harmful during acute inflammation but protective during chronic inflammation.
journal_name
Dig Dis Scijournal_title
Digestive diseases and sciencesauthors
Farooq SM,Stadnyk AWdoi
10.1007/s10620-012-2082-ysubject
Has Abstractpub_date
2012-07-01 00:00:00pages
1802-12issue
7eissn
0163-2116issn
1573-2568journal_volume
57pub_type
杂志文章abstract::Lichen planus is a common mucocutaneus disorder that rarely involves the esophagus. We report two challenging cases presenting with recurrent dysphagia originally suspected due to gastroesophageal reflux. Subsequent evaluation revealed peculiar endoscopic findings of desquamative esophagitis leading to the diagnosis o...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章,评审
doi:10.1023/a:1011943805711
更新日期:2001-10-01 00:00:00
abstract::Bile acids, such as deoxycholic acid (DC), are known to mediate some of their actions by differentially activating various protein kinase C (PKC) isoforms. This study confirms that DC induces apoptosis in gastric epithelial cells through PARP and caspase cascade activation, and examined the role of PKC in DC-induced a...
journal_title:Digestive diseases and sciences
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doi:10.1007/s10620-006-9346-3
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journal_title:Digestive diseases and sciences
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journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-018-5239-5
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abstract::Hepatitis B virus (HBV) infection is a major etiology of chronic liver disease worldwide. In the past decade, nonalcoholic fatty liver disease (NAFLD) has emerged as a common liver disorder in general population. Accordingly, the patient number of chronic hepatitis B (CHB) concomitant with NAFLD grows rapidly. The pre...
journal_title:Digestive diseases and sciences
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abstract::The perception that chronic hepatitis C is an asymptomatic disease contrasts with many studies that show a strong association between chronic hepatitis C, hepatocellular cancer, and fatal liver disease. In order to resolve these issues, it is logical to directly evaluate the quality of life in patients with chronic he...
journal_title:Digestive diseases and sciences
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abstract::The effect of dopamine on human gastric and small intestinal interdigestive motility was investigated in 12 subjects. Intestinal motility was recorded by means of a four-lumen polyvinyl probe with four open tips located 15 cm apart, continuously perfused with distilled water. In each subject during the same study, aft...
journal_title:Digestive diseases and sciences
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doi:10.1007/BF01311668
更新日期:1986-04-01 00:00:00
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journal_title:Digestive diseases and sciences
pub_type: 杂志文章,评审
doi:10.1007/s10620-005-3033-7
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journal_title:Digestive diseases and sciences
pub_type: 杂志文章
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journal_title:Digestive diseases and sciences
pub_type: 临床试验,杂志文章
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journal_title:Digestive diseases and sciences
pub_type: 杂志文章,meta分析,评审
doi:10.1007/s10620-009-0978-y
更新日期:2010-07-01 00:00:00
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journal_title:Digestive diseases and sciences
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/BF01316493
更新日期:1993-03-01 00:00:00
abstract::Twenty-four patients with chronic active HCV infection, nonresponders to a previous treatment cycle with recombinant interferon-alpha (r-IFNA), underwent retreatment with leukocyte (LE-) IFN-alpha. This was administered at the dose of 3 MU three times a week, for either six months (group A) or 12 months (group B). All...
journal_title:Digestive diseases and sciences
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1998-10-01 00:00:00
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journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-019-05717-0
更新日期:2019-12-01 00:00:00
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journal_title:Digestive diseases and sciences
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doi:10.1007/s10620-014-3250-z
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journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF01536255
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journal_title:Digestive diseases and sciences
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doi:10.1007/s10620-017-4618-7
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journal_title:Digestive diseases and sciences
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journal_title:Digestive diseases and sciences
pub_type: 临床试验,杂志文章,随机对照试验
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journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1023/a:1005431703317
更新日期:2000-02-01 00:00:00
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journal_title:Digestive diseases and sciences
pub_type: 杂志文章,随机对照试验
doi:10.1007/s10620-019-05695-3
更新日期:2020-02-01 00:00:00
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journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF01393761
更新日期:1982-08-01 00:00:00
abstract::Chronic dyspepsia is common in children. However, the association of individual predominant symptoms with gastric emptying and their impact on nutritional status are poorly defined. We therefore studied 31 children (mean age 11 years, 14 boys) with chronic dyspepsia and classified their predominant symptoms (PS) by th...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1023/a:1013299016879
更新日期:2002-01-01 00:00:00
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journal_title:Digestive diseases and sciences
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1985-06-01 00:00:00
abstract::To evaluate the influence of chronic alcoholism on clinical features of chronic pancreatitis in Japan, pain evolution, pancreatic insufficiency, and long-term prognosis were studied by comparing chronic alcoholic pancreatitis (N = 88) with idiopathic pancreatitis (N = 67). The 155 patients with known course of the dis...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF01536151
更新日期:1989-01-01 00:00:00
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journal_title:Digestive diseases and sciences
pub_type: 杂志文章
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更新日期:1987-04-01 00:00:00
abstract::A randomized controlled clinical study was conducted to determine (a) whether basic aluminum sucrose sulfate (sucralfate) is effective in preventing or reducing gastric ulcer recurrence, and (b) the clinical parameters contributing to ulcer recurrence after endoscopically proved healing has been effected. A total of 1...
journal_title:Digestive diseases and sciences
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/BF01312725
更新日期:1980-01-01 00:00:00
abstract:BACKGROUND AND AIM:The liver has a high capacity of its regeneration. Most hepatic cells are quiescent unless otherwise stimulated such as their injury or ablation. A previous study suggest that pre-activated hepatic cells have a positive effect on their regeneration. In this study, we examined whether the pre-activate...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-015-3536-9
更新日期:2015-06-01 00:00:00