Abstract:
BACKGROUND:Irritable bowel syndrome (IBS) pathophysiology has not been fully understood. Abnormalities of serine proteases have been identified in IBS patients. In addition, protease-activated receptors (PAR) activation interferes with several components of the pathogenesis of IBS, so, evaluating the PAR expression in IBS patients may contribute to understanding the pathogenesis of the disease. AIMS:This study aimed to investigate whether the expression of PAR4 and PAR2 in the colon was changed in IBS patients and was associated with IBS. METHODS:Colon mucosal biopsies of 34 IBS patients (16 constipation- and 18 diarrhea-predominant) and 18 control subjects were collected. Gene transcripts of PAR2, PAR4, tryptase, and trypsin were quantified using real-time polymerase chain reaction (PCR) and the expression of PAR2 and PAR4 receptors was also measured by immunohistology and image analysis. RESULTS:In IBS patients, the mRNA expression of tryptase and trypsin normalized against β-actin gene was higher compared to control subjects (P < 0.001). No difference was observed in the PAR2 mRNA level or protein level between control subjects on the one hand and IBS patients or subgroups on the other. In IBS or IBS subgroups patients, the expression of PAR4 in the mRNA level or protein level was lower than the control subjects. CONCLUSIONS:This study, for the first time, indicated the PAR4 expression in IBS patients. Decreased PAR4 expression may help us to understand the pathogenesis of IBS.
journal_name
Dig Dis Scijournal_title
Digestive diseases and sciencesauthors
Zhao JH,Dong L,Shi HT,Wang ZY,Shi HY,Ding Hdoi
10.1007/s10620-011-1827-3subject
Has Abstractpub_date
2012-01-01 00:00:00pages
58-64issue
1eissn
0163-2116issn
1573-2568journal_volume
57pub_type
杂志文章abstract:BACKGROUND AND AIMS:Biliary complications (BCs) occur in up to 40% of living donor liver transplant (LDLT) recipients. The aim of this study was to evaluate the efficacy of endoscopic therapy in the management of LDLT-related BCs. METHODS:A retrospective study of 100 LDLT recipients at a single transplant center over ...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-016-4367-z
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abstract::We assessed the characteristics of muscarinic neural transmission in the vagal inhibitory pathway to the lower esophageal sphincter (LES) of anesthetized opossums. LES relaxation was induced by electrical stimulation of the cervical vagus. Measurements were made of LES relaxation before and after intravenous administr...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF01300200
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abstract::The aim of this study was to compare alcohol and smoking as risk factors in the development of chronic pancreatitis and pancreatic cancer. We considered only male subjects: (1) 630 patients with chronic pancreatitis who developed 12 pancreatic and 47 extrapancreatic cancers; (2) 69 patients with histologically well do...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1023/a:1026670911955
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abstract::This study was undertaken to compare the effects of subtotal Billroth II gastrectomy on gastric emptying and gastrointestinal motility with previously published results in intact dogs and in dogs with subtotal Roux-Y gastrectomy. Extraluminal strain gauge transducers were used to study gastrointestinal motility after ...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF01537268
更新日期:1989-08-01 00:00:00
abstract::We examined the role of capsaicin-sensitive afferent neurons in pH-dependent gastrin secretion in the rat stomach. The change in serum gastrin levels relative to changes in luminal pH (using omeprazole for luminal alkalization or 0.1 N HCl for luminal acidification) was studied after oral administration of 4% lidocain...
journal_title:Digestive diseases and sciences
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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,评审
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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
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journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF01537580
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journal_title:Digestive diseases and sciences
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doi:10.1007/s10620-008-0508-3
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journal_title:Digestive diseases and sciences
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1007/BF01316789
更新日期:1993-04-01 00:00:00
abstract:BACKGROUND:Preclinical data demonstrate that activation of the renin-angiotensin system (RAS) contributes to mucosal inflammation, and RAS inhibition by angiotensin-converting-enzyme inhibitors (ACEI) and angiotensin receptor blockers (ARB) improves colitis in animal models. Less is known regarding the effects of RAS i...
journal_title:Digestive diseases and sciences
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journal_title:Digestive diseases and sciences
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doi:10.1007/s10620-015-3823-5
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journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF01312737
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abstract:BACKGROUND:Data regarding early atherosclerosis and inflammatory bowel disease are limited and conflicting results are present. AIMS:The purpose of this study was to evaluate serological and sonographical evidence of subclinical vascular involvement in patients with inflammatory bowel disease. METHODS:Thirty-nine pat...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-012-2148-x
更新日期:2012-08-01 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/BF01296258
更新日期:1984-03-01 00:00:00
abstract::A discrepancy exists on the effects of somatostatin on the absorption of nutrients: in humans, absorption was found to be reduced, whereas in rats no effects were observed. However, intestinal absorption might be influenced by the transit rate of contents. This was not considered in previous studies. Therefore, we inv...
journal_title:Digestive diseases and sciences
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journal_title:Digestive diseases and sciences
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journal_title:Digestive diseases and sciences
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journal_title:Digestive diseases and sciences
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更新日期:2013-09-01 00:00:00
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journal_title:Digestive diseases and sciences
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更新日期:2004-05-01 00:00:00
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journal_title:Digestive diseases and sciences
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更新日期:2010-07-01 00:00:00
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journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF01308330
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abstract::Alterations of small intestinal sensory thresholds and small intestinal dysmotility are associated with functional dyspepsia. Because gastric and duodenal afferents partly project to the same areas, we postulated that patients with functional dyspepsia and H. pylori infection would be characterized by lower duodenal s...
journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/BF02088548
更新日期:1996-07-01 00:00:00
abstract::Microvesicular steatosis is a potentially severe manifestation of valproic acid hepatotoxicity due to an acquired impairment of mitochondrial function. Tests currently used to investigate mitochondrial fonction are cumbersome and cannot be used routinely. We report on a noninvasive breath test using [13C]methionine fo...
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更新日期:2001-12-01 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:1997-07-01 00:00:00
abstract::Although viral hepatitis infection is known to be associated with aplastic anemia, a causal link between viral hepatitis and aplastic anemia has not been convincingly demonstrated. A case of hepatitis B-associated severe aplastic anemia is described which only partially responded to conventional immunosuppressive trea...
journal_title:Digestive diseases and sciences
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更新日期:2002-08-01 00:00:00
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journal_title:Digestive diseases and sciences
pub_type: 杂志文章
doi:10.1007/s10620-011-1589-y
更新日期:2011-08-01 00:00:00