Abstract:
BACKGROUND & AIMS:Intercellular communication through gap junctions has been proposed to be an important mechanism for the maintenance of tissue homeostasis. However, few studies have considered the role of gap junctions in gastric mucosa. The purpose of this study was to evaluate the distribution of gap junction-specific proteins in normal and diseased gastric mucosa of humans. METHODS:Biopsy specimens were obtained endoscopically. Immunohistochemical staining was performed by standard immunoperoxidase techniques using an anti-connexin 32 monoclonal antibody. RESULTS:In normal gastric mucosa, connexin 32 was present chiefly in the foveolar cells and in a decreasing staining gradient extending down to the necks of the glands. Connexin 32 also was observed in the epithelial cells of atrophic mucosa in a pattern similar to that observed in normal controls. Conversely, the majority of the foveolar cells adjacent to erosions had reduced or absent staining. Connexin 32 also was reduced significantly or absent from metaplastic epithelial cells. No malignant cells from patients with carcinoma contained detectable connexin 32. CONCLUSIONS:Intercellular communication likely is impaired in precancerous or paracancerous lesions of the stomach. Abnormal intercellular communication thus may play an important role in the progression from mucosal injury to intestinal metaplasia and/or gastric carcinoma.
journal_name
Gastroenterologyjournal_title
Gastroenterologyauthors
Uchida Y,Matsuda K,Sasahara K,Kawabata H,Nishioka Mdoi
10.1016/0016-5085(95)90635-5subject
Has Abstractpub_date
1995-11-01 00:00:00pages
1492-6issue
5eissn
0016-5085issn
1528-0012pii
0016-5085(95)90635-5journal_volume
109pub_type
杂志文章相关文献
GASTROENTEROLOGY文献大全abstract:BACKGROUND & AIMS:The parietal cell has secretory receptors for histamine and acetylcholine, whereas the functional nature of the gastrin/cholecystokinin B receptor is controversial. This study in isolated gastric glands investigates the cholecystokinin B receptor-induced intracellular calcium concentration ([Ca]i) res...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1016/0016-5085(95)90563-4
更新日期:1995-10-01 00:00:00
abstract::The leukocyte migration inhibition test has been used to investigate cellular immune responses to antigens in a protein fraction (BPF) of normal human gallbladder bile in patients with a variety of intra- and extrahepatic diseases. Inhibition of leukocyte migration in the presence of BPF was observed in 30 (81%) of 37...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:
更新日期:1979-06-01 00:00:00
abstract:BACKGROUND & AIMS:Abnormal processing of visceral sensation at the level of the central nervous system is believed to be involved in functional dyspepsia. However, compared with studies of stimulation-related changes in brain activity, few studies have focused on resting brain activity, which also is important in patho...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1053/j.gastro.2011.05.003
更新日期:2011-08-01 00:00:00
abstract:BACKGROUND & AIMS:Reduced generation of all-trans retinoic acid (RA) by CD103(+) intestinal dendritic cells (DCs) is linked to intestinal inflammation in mice. However, the role of RA in intestinal inflammation in humans is unclear. We investigated which antigen-presenting cells (APCs) produce RA in the human intestine...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1053/j.gastro.2014.01.057
更新日期:2014-05-01 00:00:00
abstract:BACKGROUND & AIMS:We have previously shown that patients with irritable bowel syndrome (IBS) have impaired transit of intestinal gas loads. Because abnormal gas retention can be experimentally reproduced in healthy subjects by pharmacological inhibition of gut motility, we hypothesized that impaired gas transit and ret...
journal_title:Gastroenterology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1053/gast.2002.33658
更新日期:2002-06-01 00:00:00
abstract::The symptoms of urgency, diarrhea, and abdominal discomfort are exaggerated after a meal in inflammatory disorders of the colon, such as ulcerative colitis. The possible motor correlates of these symptoms were investigated in a model of acute colitis in six dogs. Each dog was instrumented with seven strain gauge trans...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1016/0016-5085(91)90389-3
更新日期:1991-12-01 00:00:00
abstract:BACKGROUND & AIMS:Epithelial stem cells in the stomach are responsible for constant renewal of the epithelium through generation of multiple gastric cell lineages that populate the gastric glands. However, gastric stem or progenitor cells have not been well-characterized because of the lack of specific markers that per...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1053/j.gastro.2007.09.031
更新日期:2007-12-01 00:00:00
abstract::Chronic graft-vs.-host disease occurs in 30%-50% of long-term survivors of allogeneic bone marrow grafts, and may eventuate in cirrhosis. In this study, a young woman, originally diagnosed as having acute myelogenous leukemia, underwent successful bone marrow transplantation but later developed graft-vs.-host disease-...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1016/0016-5085(90)91039-9
更新日期:1990-08-01 00:00:00
abstract:BACKGROUND & AIMS:The host immune response during the chronic phase of hepatitis C virus infection varies among individuals; some patients have a no interferon (IFN) response in the liver, whereas others have full activation of IFN-stimulated genes (ISGs). Preactivation of this endogenous IFN system is associated with ...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1053/j.gastro.2010.11.039
更新日期:2011-03-01 00:00:00
abstract::Interleukin 6 (IL6) is an inflammatory cytokine; signaling via its receptor (IL6R) is believed to contribute to development of inflammatory bowel diseases (IBD). The single nucleotide polymorphism rs2228145 in IL6R associates with increased levels of soluble IL6R (s-IL6R), as well as reduced IL6R signaling and risk of...
journal_title:Gastroenterology
pub_type: 杂志文章,meta分析
doi:10.1053/j.gastro.2018.05.022
更新日期:2018-08-01 00:00:00
abstract::Four Puerto Rican sisters had recurrent prolonged cholestasis of pregnancy without preexisting or intercurrent hepatic disorders. Available information was reviewed on the course, mechanism, and sequelae of prolonged recurrent cholestasis after 14 pregnancies in the 4 sisters. Etiologic, clinical, laboratory, radiolog...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1016/s0016-5085(97)70193-8
更新日期:1997-09-01 00:00:00
abstract:BACKGROUND & AIMS:MicroRNAs (miRNAs) have been implicated in the development and progression of human cancers. We investigated the roles and mechanisms of miR-26a in human cholangiocarcinoma. METHODS:We used in situ hybridization and quantitative reverse transcriptase polymerase chain reaction to measure expression of...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1053/j.gastro.2012.03.045
更新日期:2012-07-01 00:00:00
abstract::A 61-yr-old woman was found to have multicentric hepatocellular carcinoma associated with clinical hyperthyroidism. Marked elevations in serum thyroid-stimulating hormone, T4, T3, and free T4 were documented. These values increased with tumor progression. It is postulated that this patient's hepatoma produced a substa...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1016/s0016-5085(85)80152-9
更新日期:1985-01-01 00:00:00
abstract:BACKGROUND & AIMS:In patients with achalasia esophagus, swallows induce simultaneous pressure waves known as esophageal pressurization. We studied the mechanism of esophageal pressurization and bolus flow patterns in patients with type 2 or type 3 achalasia. METHODS:We recorded high-resolution manometry with impedance...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1053/j.gastro.2018.04.033
更新日期:2018-08-01 00:00:00
abstract:BACKGROUND & AIMS:This study examined the possible role of endotoxinemia (from increased gut permeability) as an additional trigger factor for overt pancreatic disease and as a promoter of chronic pancreatic injury in alcoholics by using a rat model of chronic alcohol feeding and in vitro experiments with cultured panc...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1053/j.gastro.2007.06.062
更新日期:2007-10-01 00:00:00
abstract::We have greatly advanced our ability to grow a diverse range of tissue-derived and pluripotent stem cell-derived gastrointestinal (GI) tissues in vitro. These systems, broadly referred to as organoids, have allowed the field to move away from the often nonphysiological, transformed cell lines that have been used for d...
journal_title:Gastroenterology
pub_type: 杂志文章,评审
doi:10.1053/j.gastro.2015.12.042
更新日期:2016-05-01 00:00:00
abstract:BACKGROUND & AIMS:Screening for colorectal cancer (CRC) with sigmoidoscopy reduces CRC incidence by detecting and removing adenomas. The number needed to screen is a measure of screening efficiency, but is not directly associated with adenoma removal. We propose the following 2 new metrics for quantifying the relations...
journal_title:Gastroenterology
pub_type: 杂志文章,meta分析
doi:10.1053/j.gastro.2018.06.040
更新日期:2018-10-01 00:00:00
abstract::The characteristics are described of an antibody (designated L6) which has virtually absolute specificity for heptadecapeptide gastrin. This antibody binds G17, but does not bind peptide fragments or molecular forms of gastrin comprising G17 with either amino acid deletions, or additions, at the carboxyl- and amino-te...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:
更新日期:1976-12-01 00:00:00
abstract:BACKGROUND & AIMS:CD8(+) T cells that produce interleukin (IL)-17 (Tc17 cells) promote inflammation and have been identified in tumors. We investigated their role in the pathogenesis of gastric cancer. METHODS:We used flow cytometry analyses to determine levels and phenotype of Tc17 cells in blood and tumor samples fr...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1053/j.gastro.2012.06.010
更新日期:2012-10-01 00:00:00
abstract:BACKGROUND/AIMS:Carbonic anhydrase activity plays a role in electrolyte transport in many tissues. This study examined the effect of the carbonic anhydrase inhibitor acetazolamide on human basal and prostaglandin E2- and acid-stimulated duodenal mucosal bicarbonate secretion and transmucosal electrical potential differ...
journal_title:Gastroenterology
pub_type: 临床试验,杂志文章
doi:10.1016/0016-5085(95)90013-6
更新日期:1995-01-01 00:00:00
abstract:BACKGROUND & AIMS:Despite high morbidity and mortality of alcoholic liver disease worldwide, the molecular mechanisms underlying alcohol-induced liver cell death are not fully understood. Transglutaminase 2 (TG2) is a cross-linking enzyme implicated in apoptosis. TG2 levels and activity are increased in association wit...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1053/j.gastro.2009.01.007
更新日期:2009-05-01 00:00:00
abstract:BACKGROUND & AIMS:Hepatitis C virus (HCV) infection is a leading cause of end-stage liver disease. Interferon-α (IFNα) is an important component of anti-HCV therapy; it up-regulates transcription of IFN-stimulated genes, many of which have been investigated for their antiviral effects. However, all of the genes require...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1053/j.gastro.2013.02.026
更新日期:2013-06-01 00:00:00
abstract:BACKGROUND & AIMS:The mechanism by which gastric mucosa becomes more resistant to damage by repeated aspirin administration is not known. Transforming growth factor alpha (TGF-alpha) and epidermal growth factor (EGF) prevent drug-induced gastric injury. The aim of this study was to determine whether gastroduodenal tiss...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1053/gast.1996.v110.pm8613050
更新日期:1996-05-01 00:00:00
abstract::A combination of approaches has begun to elucidate the mechanisms of gastrointestinal development. This review describes progress over the last 20 years in understanding human gastrointestinal development, including data from both human and experimental animal studies that address molecular mechanisms. Rapid progress ...
journal_title:Gastroenterology
pub_type: 杂志文章,评审
doi:10.1016/s0016-5085(99)70193-9
更新日期:1999-03-01 00:00:00
abstract::The onset, course, and regression of the biochemical and structural alterations associated with pancreatitis induced by various doses of caerulein were studied in the mouse. In addition, the protective effect of secretin was compared with that of the cholecystokinin-receptor antagonists proglumide and benzotript. Subc...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1016/s0016-5085(85)80079-2
更新日期:1985-05-01 00:00:00
abstract:BACKGROUND AND AIMS:Serrated polyp (SPs) are precursors to 20% to 30% of cases of colorectal tumors, but patients' long-term risk after removal of SPs is poorly understood. We investigated the risk of colorectal cancer (CRC) in individuals with a history of SPs. METHODS:We performed a retrospective cohort study of Kai...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1053/j.gastro.2020.04.004
更新日期:2020-08-01 00:00:00
abstract::The effects of intracerebroventricular and intravenous administration of corticotropin-releasing factor (CRF) on gastrointestinal motility, motilin-induced gastric motor response, and plasma motilin and somatostatin levels were investigated in fasted dogs chronically prepared with strain gauge transducers on the antru...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1016/0016-5085(86)90690-6
更新日期:1986-10-01 00:00:00
abstract:BACKGROUND & AIMS:In human and canine colon, both slow (slow waves, 2-8/min) and fast (myenteric potential oscillations [MPOs]; 16-20/min) electrical rhythms in the smooth muscle originate at the submucosal and myenteric borders, respectively. We used Ca(2+) imaging to investigate whether interstitial cells of Cajal (I...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1053/j.gastro.2009.02.060
更新日期:2009-06-01 00:00:00
abstract::The management of colon polyps has been completely revolutionized since the introduction of colonoscopic polypectomy. The reductions in patient time, cost, morbidity, and mortality are major advantages. Reported complications include primarily hemorrhage (1.7%) and frank clinical perforation (0.32%). This report descr...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:
更新日期:1976-01-01 00:00:00
abstract:BACKGROUND & AIMS:Celiac disease is a complex, immune-mediated disorder of the intestinal mucosa with a strong genetic component. HLA-DQ2 is the major determinant of risk, but other minor genes, still to be identified, also are involved. METHODS:We designed a strategy that combines gene expression profiling of intesti...
journal_title:Gastroenterology
pub_type: 杂志文章
doi:10.1053/j.gastro.2007.11.041
更新日期:2008-03-01 00:00:00