Abstract:
:To test whether bile acids interact with mast cells, dilute, aqueous solutions of five pure unconjugated natural bile acids and their corresponding glycine or taurine conjugates were incubated with murine PT-18 cells (a mast cell line functionally and cytochemically similar to mucosal mast cells) or with freshly isolated rat peritoneal mast cells. Bile acid solutions ranged in concentration from 0.3 to 10 mmol/L; histamine release was assessed by a fluorimetric assay, and cell lysis by cytosolic enzyme (lactate dehydrogenase) release. Lipophilic, dihydroxy bile acids (chenodeoxycholic acid and deoxycholic acid as well as their glycine and taurine conjugates) caused histamine release in a dose-related manner; cholic acid and its conjugates caused much less or no histamine release. Two hydrophilic bile acids (ursodeoxycholic acid and ursocholic acid and their conjugates) were virtually devoid of activity. Histamine release, which was independent of extracellular Ca2+, occurred at 0.3 mmol/L, well below the critical micellization concentration. For a given concentration, unconjugated bile acids and glycine-conjugated bile acids induced more histamine release than taurine-conjugated bile acids; maximal release was observed at 3 mmol/L for lipophilic, dihydroxy bile acids. To test whether bile acids could also cause histamine release from cutaneous mast cells in vivo, rats were injected intradermally with bile acid solutions and histamine release assessed by capillary leakage of Evan's blue dye. Cutaneous blueing was greater with cytotoxic bile acids, chenodeoxycholyglycine or deoxycholylglycine, than with ursodeoxycholylglycine and was inhibited by prior antihistamine treatment. Histamine release correlated highly and positively with lipophilicity and with bile acid surface activity. It was concluded that lipophilic but not hydrophilic bile acids possess concentration-dependent cytotoxicity toward mast cells causing histamine release, that unconjugated and glycine-conjugated bile acids are more potent than taurine-conjugated bile acids, and that mast cell histamine release is highly correlated with lipophilicity of bile acids as well as their surface activity.
journal_name
Gastroenterologyjournal_title
Gastroenterologyauthors
Quist RG,Ton-Nu HT,Lillienau J,Hofmann AF,Barrett KEdoi
10.1016/0016-5085(91)90024-fsubject
Has Abstractpub_date
1991-08-01 00:00:00pages
446-56issue
2eissn
0016-5085issn
1528-0012pii
0016-5085(91)90024-Fjournal_volume
101pub_type
杂志文章相关文献
GASTROENTEROLOGY文献大全abstract:BACKGROUND & AIMS:The duodenum is a cystic fibrosis transmembrane conductance regulator (CFTR)-expressing epithelium with high bicarbonate secretory capacity. We aimed to define the role of CFTR in human duodenal epithelial bicarbonate secretion in normal (NL) subjects and patients with cystic fibrosis (CF). METHODS:E...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1016/s0016-5085(00)70358-1
更新日期:2000-06-01 00:00:00
abstract::Previous studies suggested that the food-containing canine stomach retains large, nondigestible spheres until all food has emptied; but it is not known whether there is a threshold size or a gradation of sizes that will empty along with food. Further, nothing is known of the effects of such parameters as density, shap...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1016/0016-5085(85)90576-1
更新日期:1985-10-01 00:00:00
abstract:BACKGROUND & AIMS:The lipocalin superfamily, including the mouse and human homologues 24p3/lcn2 and neutrophil gelatinase-associated lipocalin, show great functional diversity including roles in olfaction, transportation, and prostaglandin synthesis in mammals. Their potential role in maintaining gastrointestinal mucos...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1053/j.gastro.2006.05.051
更新日期:2006-09-01 00:00:00
abstract::The effect of total-body ionizing radiation on the digestive tract is dose-dependent and time-dependent. At low doses (1.5 Gy), one observes only a short prodromal syndrome consisting of nausea, vomiting, and gastric suppression. At doses greater than 6 Gy, the prodromal syndrome is more marked, and it is followed aft...
journal_title:Gastroenterology
pub_type: 杂志文章,评审
doi:10.1016/0016-5085(88)90512-4
更新日期:1988-08-01 00:00:00
abstract:BACKGROUND & AIMS:Maintenance of acid-base homeostasis is required for normal physiology, metabolism, and development. It is not clear how cell death is activated in response to changes in pH. We performed a screen to identify agents that induce cell death in a pH-dependent manner (we call this alkaliptosis) in pancrea...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1053/j.gastro.2017.12.004
更新日期:2018-04-01 00:00:00
abstract:BACKGROUND & AIMS:Estimates of complication rates following elective percutaneous liver biopsy vary and might not accurately reflect current practice. We studied mortality and complication rates, by indication, in patients after they underwent liver biopsies. METHODS:We performed a study using hospital episode statist...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1053/j.gastro.2010.06.015
更新日期:2010-10-01 00:00:00
abstract::A multicenter study was conducted on 173 patients with active, endoscopically proven duodenal ulcers (158 men, 15 women). They were randomly assigned, in a double-blind manner, to two groups: those receiving placebo capsules (91 patients) and those receiving capsules containing 100 microgram of 15(R)-15-methyl prostag...
journal_title:Gastroenterology
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:1982-08-01 00:00:00
abstract:BACKGROUND & AIMS:Activation of Fas or tumor necrosis factor receptor 1 (TNF-R1) on hepatocytes leads to apoptosis, which requires mitochondria activation. The pro-death Bcl-2 family protein, Bid, mediates this pathway by inducing mitochondrial releases of cytochrome c and other apoptotic factors. How Bid activates mit...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1016/s0016-5085(03)01066-7
更新日期:2003-09-01 00:00:00
abstract::2-Camphanone is under clinical evaluation for alleviation of hemorrhoidal bleeding and inflammation. Reduced portal venous blood flow may distend, whereas improved portal venous blood flow may alleviate, hemorrhoidal vein distention. The effects of 2-camphanone on canine portal venous blood flow were investigated usin...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1016/0016-5085(92)90082-a
更新日期:1992-02-01 00:00:00
abstract:BACKGROUND & AIMS:Although the cell of origin for pancreatic cancer remains unknown, prior studies have suggested that pancreatic neoplasia may be initiated in progenitor-like cells. To examine the effects of oncogene activation within the pancreatic progenitor pool, we devised a system for real-time visualization of b...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1053/j.gastro.2008.02.084
更新日期:2008-06-01 00:00:00
abstract:BACKGROUND & AIMS:Abdominal bloating is a frequent complaint in irritable bowel syndrome (IBS), but its underlying mechanism remains uncertain. Our aim was to determine whether the abdominal wall, specifically its adaptation to intra-abdominal volumes, plays a role. METHODS:In 12 patients complaining of abdominal bloa...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1053/j.gastro.2005.12.036
更新日期:2006-04-01 00:00:00
abstract::Rotaviruses cause life-threatening gastroenteritis in children worldwide; the enormous disease burden has focused efforts to develop vaccines and led to the discovery of novel mechanisms of gastrointestinal virus pathogenesis and host responses to infection. Two live-attenuated vaccines for gastroenteritis (Rotateq [M...
journal_title:Gastroenterology
pub_type: 杂志文章,评审
doi:10.1053/j.gastro.2009.02.076
更新日期:2009-05-01 00:00:00
abstract:BACKGROUND & AIMS:Serotonin transporter (SERT) plays a critical role in regulating serotonin (5-hydroxytryptamine [5-HT]) availability in the gut. Elevated 5-HT levels are associated with diarrheal conditions such as irritable bowel syndrome and enteric infections. Whether alteration in SERT activity contributes to the...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1053/j.gastro.2009.09.002
更新日期:2009-12-01 00:00:00
abstract::The mortality experienced by a cohort of 653 patients with celiac disease in Edinburgh and the Lothian region has been analyzed. Mortality overall was 1.9-fold (95% confidence limits, 1.5-2.2) that of the general population (115 deaths observed, 61.8 expected; p less than 0.0001). The increased mortality was greatest ...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1016/0016-5085(89)90060-7
更新日期:1989-08-01 00:00:00
abstract::We have investigated the effect of oral cisapride (10 mg t.i.d.) in a double-blind, placebo-controlled trial in 26 patients with upper gut dysmotility: 11 with gastroparesis (8 diabetic, 3 idiopathic) and 15 with chronic idiopathic intestinal pseudoobstruction. Patients were evaluated at entry and at the end of the 6-...
journal_title:Gastroenterology
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:1989-03-01 00:00:00
abstract::The effect of magnesium on calcium- and pentagastrin-induced gastric acid secretion and on calcium-induced gastrin secretion were studied in healthy volunteers. Intravenous infusion of calcium gluconate increased serum gastrin concentration as well as gastric volume secretion, acidity, and acid output. Addition of mag...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:
更新日期:1975-05-01 00:00:00
abstract:BACKGROUND & AIMS:Hepatitis E virus (HEV) infection can cause chronic hepatitis in recipients of solid organ transplants. However, the factors that contribute to chronic infection and the outcomes of these patients are incompletely understood. We performed a retrospective analysis of data from 17 centers from Europe an...
journal_title:Gastroenterology
pub_type: 杂志文章,多中心研究
doi:10.1053/j.gastro.2011.02.050
更新日期:2011-05-01 00:00:00
abstract::The asialoglycoprotein receptor is present on the plasma membrane of rat hepatocytes and mediates the endocytosis of exogenous asialoglycoproteins. The intracellular locations of the receptor are incompletely defined, and whether the receptor is present on the canalicular membrane is controversial. To investigate thes...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:
更新日期:1984-10-01 00:00:00
abstract::Phlebotomy constitutes the established treatment for HFE-related hemochromatosis. Retrospective studies have suggested proton pump inhibitors (PPIs) reduce the need for phlebotomy in this population. We conducted a randomized controlled trial to prove this. Thirty p.C282Y homozygous patients were randomly allocated to...
journal_title:Gastroenterology
pub_type: 杂志文章,随机对照试验
doi:10.1053/j.gastro.2017.06.006
更新日期:2017-09-01 00:00:00
abstract:BACKGROUND:The contribution of the crural diaphragm to the gastroesophageal high pressure zone (HPZ) may be important in prevention of gastroesophageal reflux. The purpose of this study was to investigate the manometric characteristics of the thoracoabdominal junction in patients after surgical removal of the lower eso...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1016/0016-5085(93)90140-8
更新日期:1993-11-01 00:00:00
abstract::We describe a novel "silvering" method to determine the surface area of nonspherical objects and have applied this method to human cholesterol gallstones. A standard curve is first constructed, using data obtained from the dissolution rates of silver-coated plastic spheres of known dimensions in unstirred thiosulfate-...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:
更新日期:1982-11-01 00:00:00
abstract:BACKGROUND & AIMS:Recent studies indicate that kringle 1-5 has a potent and specific antiangiogenic activity. Here, we investigated the antitumor effect of kringle 1-5 gene transfer on hepatocellular carcinoma in mice. METHODS:The inhibitory effect of kringle 1-5 protein on proliferation of bovine capillary endothelia...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1053/j.gastro.2006.02.020
更新日期:2006-04-01 00:00:00
abstract::Although Hemoccult (Smith Kline Diagnostics, Inc., Sunnyvale, Calif.) screening for colorectal cancer is based on detection of the peroxidase activity of blood, little is known about the relationship between patterns of bleeding from cancers or adenomas and sensitivity of the test slides. 51Cr-labeled blood loss was m...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:
更新日期:1982-05-01 00:00:00
abstract::Sepsis following the placement of a transjugular intrahepatic portosystemic shunt (TIPS) has been reported in up to 10% of cases. This report describes an unusual case of polymicrobial gram-negative sepsis after placement of TIPS associated with a cholangiographically documented fistulous connection between the biliar...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1053/gast.1996.v111.pm8898650
更新日期:1996-11-01 00:00:00
abstract:BACKGROUND & AIMS:Standardized instruments are needed to assess the activity of eosinophilic esophagitis (EoE) and to provide end points for clinical trials and observational studies. We aimed to develop and validate a patient-reported outcome (PRO) instrument and score, based on items that could account for variations...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1053/j.gastro.2014.08.028
更新日期:2014-12-01 00:00:00
abstract::The assessment of disease activity in Crohn's disease involves determination of either clinical indexes (e.g., Crohn's disease activity index) or laboratory measurements (e.g., C-reactive protein and erythrocyte sedimentation rate). These have the disadvantage of being indirect and nonspecific correlates of gut inflam...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:
更新日期:1983-12-01 00:00:00
abstract::The community of microorganisms within the human gut (or microbiota) is critical to health and functions with a level of complexity comparable to that of an organ system. Alterations of this ecology (or dysbiosis) have been implicated in a number of disease states, and the prototypical example is Clostridium difficile...
journal_title:Gastroenterology
pub_type: 杂志文章,评审
doi:10.1053/j.gastro.2015.05.008
更新日期:2015-07-01 00:00:00
abstract::The anatomical extent of fiberoptic sigmoidoscopy was determined by placing a clip on the colonic mucosa and subsequently locating the clip on barium enema. A 60 cm exam viewed the entire sigmoid colon in 81% of patients. Exams of 50-55 cm, 40-45 cm, and 30-35 cm extent viewed the entire sigmoid colon in 68%, 27%, and...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:
更新日期:1983-04-01 00:00:00
abstract:BACKGROUND & AIMS:We assessed the association of body mass and gastric volumes (fasting and postprandial) with satiation and postprandial symptoms. METHODS:Healthy obese and nonobese subjects underwent measurement of caloric intake at maximum satiation; postprandial symptoms were measured with visual analogue scales 3...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1053/j.gastro.2003.11.007
更新日期:2004-02-01 00:00:00
abstract::In the TMC435-C101 study, 6 patients infected with hepatitis C virus genotype 1 were treated with the protease inhibitor TMC435 (200 mg once daily) as monotherapy for 5 days. Approximately 1.5 years later, 5 of these patients were re-treated with TMC435 (200 mg once daily) plus pegylated interferon alfa-2a and ribavir...
journal_title:Gastroenterology
pub_type: 临床试验,杂志文章
doi:10.1053/j.gastro.2012.07.117
更新日期:2012-11-01 00:00:00