Abstract:
:The mechanism of drug resistance of gastric cancer cells has rarely been investigated. We specifically examine the magnitude and the biologic significance of multidrug resistance-1 (MDR-1) expression in human gastric cancer. All patients had previously been treated in prospective clinical trials for advanced gastric cancer in our institution. Patients with adequate prechemotherapy gastric cancer tissues for immunohistochemical studies by a C219 monoclonal antibody were selected for the determination of the expression rate of MDR-1. The results were designated as negative or positive by the independent interpretation of two pathologists. A subgroup of patients who had been treated with doxorubicin- or etoposide-containing regimens were selected for further correlation with drug sensitivity. Between 1990 and 1996, a total of 60 patients, 38 men and 22 women with a median age of 55 years, were studied. Eight (13.3%; 95% confidence interval, 6%-25%) of them had MDR-1 expression. None of the pertinent clinicopathologic features, including the histopathologic types of the tumors and the extent of the diseases, correlated with the expression of MDR-1. Among the 30 patients who had received doxorubicin- or etoposide-containing combination chemotherapy, 3 (10%; 95% confidence interval, 3%-27%) were designated positive for MDR-1 expression. None of the 3 patients responded to chemotherapy, whereas 19 (70.4%) of the 27 patients who had not expressed MDR-1 did respond (p=0.041 by Fisher's exact test). We conclude that the expression of MDR-1 in gastric cancer is relatively low. Its expression, however, is clinically relevant and is useful in predicting the chemoresistance of patients with gastric cancer receiving doxorubicin- or etoposide-containing combination chemotherapy.
journal_name
J Clin Gastroenteroljournal_title
Journal of clinical gastroenterologyauthors
Yeh KH,Chen CL,Shun CT,Lin JT,Lee WJ,Lee PH,Chen YC,Cheng ALdoi
10.1097/00004836-199806000-00012subject
Has Abstractpub_date
1998-06-01 00:00:00pages
274-8issue
4eissn
0192-0790issn
1539-2031journal_volume
26pub_type
杂志文章abstract:OBJECTIVES:To determine serum nitric oxide levels in pediatric patients with celiac disease and to compare them with the results obtained after 1 year of gluten-free diet. METHODS:We studied serum nitric oxide levels in 41 newly diagnosed patients with celiac disease. Serum levels of nitric oxide were reevaluated afte...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章
doi:10.1097/01.mcg.0000177240.67215.da
更新日期:2005-10-01 00:00:00
abstract:GOAL:To evaluate the impact of Karnofsky Performance Status score (KPSS) at the time of liver transplantation (LT) on post-LT survival. BACKGROUND:While the Model for End-Stage Liver Disease (MELD) score is used to prioritize individuals for LT, it does not specifically incorporate functional status into patient asses...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章
doi:10.1097/MCG.0000000000001187
更新日期:2019-10-01 00:00:00
abstract::A large number of ascitic fluid tests, e.g., fibronectin and cholesterol, have been proposed as helpful in detecting malignancy as the cause of ascites. Unfortunately, these "humoral tests of malignancy" are nonspecific. Although the ascitic fluid concentrations of these proteins or protein-bound substances tend to be...
journal_title:Journal of clinical gastroenterology
pub_type: 社论,评审
doi:10.1097/00004836-199403000-00002
更新日期:1994-03-01 00:00:00
abstract:GOALS:To assess the impact of interferon treatment on celiac disease onset in hepatitis C patients and to clarify its clinical relevance and outcome. BACKGROUND:Hepatitis C is associated with autoimmunity, which can be exacerbated by interferon treatment. Cases of celiac disease activation during interferon treatment ...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章
doi:10.1097/00004836-200411000-00014
更新日期:2004-11-01 00:00:00
abstract:BACKGROUND:After radiation treatment of head and neck cancer, placement of gastrostomy feeding tubes can be technically difficult. The practice of placing tubes before treatment is probably justified if the tube is used for more than 4 weeks and if complications are infrequent. The aim of this study was to determine th...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章
doi:10.1097/00004836-200109000-00009
更新日期:2001-09-01 00:00:00
abstract::Brunner's gland hamartomas are rare benign duodenal tumors often discovered incidentally during endoscopy or on an upper gastrointestinal series. These tumors arise mainly in the duodenal bulb and can present with gastrointestinal bleeding or symptoms of intestinal obstruction. When symptomatic, surgical or endoscopic...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章
doi:10.1097/00004836-199812000-00017
更新日期:1998-12-01 00:00:00
abstract::Bleeding caused by ectopic varices is an uncommon but important and life-threatening complication of portal hypertension. Spontaneous external hemorrhage from a recanalized umbilical varix is an extremely rare source of ectopic variceal bleeding. We report on the acute presentation of a patient with a bleeding umbilic...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章
doi:10.1097/MCG.0b013e31822b7f9a
更新日期:2012-02-01 00:00:00
abstract:BACKGROUND/GOALS:The endoscopic treatment of ampullary adenomas is established; however, the false-negative rate of endoscopic biopsy for carcinoma is 20% to 30%, and it remains uncertain whether identifiable features predict malignancy. Our aim in this study was to evaluate the predictable factors of malignancy in amp...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章
doi:10.1097/MCG.0b013e318272f2ef
更新日期:2013-04-01 00:00:00
abstract::We recently treated a patient with adult-onset Still's disease who developed macrophage activation syndrome (MAS) secondary to disseminated histoplasmosis while being treated with adalimumab. The gastroenterology service was consulted early, before diagnosis, as the patient presented with elevated liver enzymes and di...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章,评审
doi:10.1097/MCG.0b013e3181f6015f
更新日期:2011-03-01 00:00:00
abstract::Forty-two patients underwent flexible sigmoidoscopy in the radiology department. After maximal insertion of the sigmoidoscope, a supine abdominal film documented the position of the tip of the instrument. Correlation with barium enema in all patients determined the extent of visualization of the colon relative to the ...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章
doi:10.1097/00004836-198208000-00009
更新日期:1982-08-01 00:00:00
abstract:BACKGROUND:Data on Asian patients who present to primary care physicians with dyspepsia are limited. AIM:To determine predictors of response to a trial of proton pump inhibitor therapy. METHOD:One hundred ninety patients presenting to their general practitioners with dyspeptic symptoms but without alarm symptoms, und...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章
doi:10.1097/01.mcg.0000225620.02094.c3
更新日期:2008-02-01 00:00:00
abstract:BACKGROUND/GOALS:Many patients with a history of injection drug use (IDU) are excluded from hepatitis C virus (HCV) treatment. This prospective multicenter study aimed to determine the impact of IDU history on HCV treatment candidacy and outcomes. STUDY:Between 1999 and 2001, 4318 HCV-infected patients seen at 24 VA M...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章,多中心研究
doi:10.1097/01.mcg.0000212644.82853.51
更新日期:2007-02-01 00:00:00
abstract:GOAL:To prospectively assess the utility of multidetector row computed tomography angiography (MDCTA) in the diagnosis of active gastrointestinal bleeding (GIB). BACKGROUND:MDCTA is a relatively recent advance in CT scanning technology enabling excellent vascular visualization and detection of various vascular abnorma...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章
doi:10.1097/MCG.0b013e31823337ee
更新日期:2012-01-01 00:00:00
abstract::Celiac disease (CD) is the most common autoimmune enteropathy, triggered by a deregulated immune response to gliadin. It has been hypothesized that human intestinal microbiota may interfere with the pathogenesis of the disease and in the clinical course of CD. In the present review, we analyzed the microbiota alterati...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章,评审
doi:10.1097/MCG.0000000000000682
更新日期:2016-11-01 00:00:00
abstract::Changes in liver biochemical test results have been described in hyperthyroid patients before and after antithyroid therapy. In the present study, we analyzed liver tests at diagnosis and after 6 weeks of treatment with propylthiouracil (PTU) in 43 patients with hyperthyroidism. At diagnosis, 60.5% of the patients had...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章
doi:10.1097/00004836-199704000-00013
更新日期:1997-04-01 00:00:00
abstract:GOALS:Follicular lymphoma (FL) is a common nodal lymphoma. Primary gastrointestinal follicular lymphoma (GIFL) is rare and most commonly occurs in the elder women with indolent clinical course, mainly in the duodenum and terminal ileum. We conducted this study to characterize GIFL in Taiwan. STUDY:A total of 13 cases ...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章
doi:10.1097/MCG.0b013e3180f62b12
更新日期:2008-10-01 00:00:00
abstract::Fecal incontinence (FI), defined as the involuntary loss of solid or liquid feces through the anus is a prevalent condition with significant effects on quality of life. FI can affect individuals of all ages and in many cases greatly impairs quality of life but, incontinent patients should not accept their debility as ...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章,评审
doi:10.1097/MCG.0000000000000797
更新日期:2017-04-01 00:00:00
abstract::Digestive endoscopy is currently the main diagnostic procedure for investigation of the digestive tract whenever a digestive disease is suspected. From 1970 to 1985, digestive endoscopy was performed with endoscopes equipped with fiberoptic bundles, whereas the last decade was marked by the development of electronic e...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章
doi:10.1097/00004836-199909000-00004
更新日期:1999-09-01 00:00:00
abstract::The 99mtechnetium pertechnetate nuclear red blood cell scan proved to be a valuable diagnostic tool in localizing the site of bleeding, from a Meckel's diverticulum, in a 41-year-old man. When peptic ulcer or colorectal disease has been excluded by panendoscopy, bleeding Meckel's diverticulum remains a diagnostic cons...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章
doi:10.1097/00004836-198904000-00019
更新日期:1989-04-01 00:00:00
abstract:GOALS:The goal of this study was to elucidate the most important predictors for elevation of gastrin in patients on long-term PPI therapy through analysis of data from 2 published studies in Icelandic patients with erosive GERD. BACKGROUND:Gastrin elevation is a known but variable consequence of proton pump inhibitor ...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章
doi:10.1097/MCG.0000000000001200
更新日期:2020-03-01 00:00:00
abstract::Over a 3-year period, arteriovenous malformations (angiodysplasia) were identified at upper gastrointestinal endoscopy in 41 patients. The lesions were multiple in one-third of patients and were predominantly situated in the proximal stomach. We considered angiodysplasia to be the cause of upper gastrointestinal bleed...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章
doi:10.1097/00004836-198608000-00004
更新日期:1986-08-01 00:00:00
abstract:BACKGROUND:The Maastricht 2-2000 guidelines on the current management of Helicobacter pylori infection were recently adopted by the Israeli Gastroenterological Association. GOAL:To determine the impact of these clinical guidelines on the current knowledge, attitudes, and management of H. pylori among primary care phys...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章
doi:10.1097/00004836-200404000-00005
更新日期:2004-04-01 00:00:00
abstract:BACKGROUND:Diagnosing a potentially life-threatening disease may adversely affect patient quality of life (QOL) independent of biologic effects. It is unknown whether the mere diagnosis of Barrett's esophagus (BE) adversely impacts patients' preferences (health-state utility) sufficiently to impair the cost-effectivene...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章
doi:10.1097/01.mcg.0000196186.19426.4a
更新日期:2006-02-01 00:00:00
abstract::Microbial signals stimulate development and maintenance of the neonatal immune system. The process begins in utero, with limited exposure to microbes in the intrauterine environment, as well as maternal immune signals priming the developing immune system. After birth and initial colonization, the immune system must be...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章,评审
doi:10.1097/MCG.0000000000000355
更新日期:2015-11-01 00:00:00
abstract::Acid-reducing drugs can cause increased growth of microbes, including fungus, because of high gastric pH. Our purpose was to evaluate the occurrence of mycotic infection in patients with duodenal ulcer on anti-ulcer therapy and to compare the effects of cimetidine, famotidine, and omeprazole. Eighty patients with duod...
journal_title:Journal of clinical gastroenterology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00004836-199607000-00003
更新日期:1996-07-01 00:00:00
abstract::Antacids, cimetidine, carbenoxolone, colloidal bismuth, and prostaglandins promote healing of gastric and duodenal ulcer at a rate nearly twice that of healing during placebo administration. These short-term, 4-12 week healing rates are nearly the same for each agent, with a 65 to 85% range. Drugs that appear to produ...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章
doi:
更新日期:1981-01-01 00:00:00
abstract::A 67-year-old woman presented with hematochezia and an episode of transient expressive dysphasia. She was found to have multiple colonic polyps with adenocarcinomatous changes. Computed tomography brain scan and computed tomography-guided biopsy revealed a left frontoparietal glioblastoma multiforme. This case illustr...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章
doi:10.1097/00004836-200204000-00014
更新日期:2002-04-01 00:00:00
abstract::The main issue regarding the approach to the patient with uninvestigated dyspepsia is whether the symptoms are the result of an important clinical illness, which then determines the appropriate management strategy for the treatment of the symptoms. An initial trial of empiric antisecretory drugs is recommended for tho...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章,评审
doi:10.1097/MCG.0b013e3181c64c69
更新日期:2010-03-01 00:00:00
abstract::Autoantibodies are nonpathogenic manifestations of immune reactivity, and they may occur in acute and chronic liver diseases. Autoantibodies may be consequences rather than causes of the liver injury, and they should be regarded as diagnostic clues rather than etiologic markers. Conventional autoantibodies used in the...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章,评审
doi:10.1097/00004836-200310000-00011
更新日期:2003-10-01 00:00:00
abstract:GOALS:To evaluate the impact of age on the prognosis of patients with hepatocellular carcinoma (HCC) undergoing percutaneous radiofrequency ablation (RFA). BACKGROUND:Whether age plays an important role in the outcomes of HCC after RFA remains controversial. STUDY:Two hundred fifty-eight consecutive treatment naive H...
journal_title:Journal of clinical gastroenterology
pub_type: 杂志文章
doi:10.1097/MCG.0b013e31822b36cc
更新日期:2012-01-01 00:00:00