Abstract:
BACKGROUND:Adiponectin has been shown to have suppressive effects on tumor development, but the expression of adiponectin receptors in tumor tissue has not been fully elucidated. The purpose of this study was to quantitatively evaluate the expression of two adiponectin receptors, AdipoR1 and AdipoR2, in gastric cancer tissue. METHODS:The mRNA levels of AdipoR1 and AdipoR2 were evaluated by quantitative reverse transcription polymerase chain reaction (RT-PCR) and immunohistochemical staining in 67 gastric cancer tissues and their normal counterparts. In addition, the effects of cytokines on AdipoR1 and AdipoR2 expression in cultured gastric cancer cells were examined. RESULTS:As compared to findings in the normal counterparts, AdipoR1 mRNA expression, standardized by β-actin mRNA, tended to be lower (cancer 0.488 ± 0.039, normal 0.955 ± 0.281, p = 0.0726) and AdipoR2 expression was significantly lower (0.818 ± 0.081, 1.500 ± 0.222, p = 0.0035) in gastric cancer tissue. Immunohistochemical examination showed the same tendency for AdipoR1 and AdipoR2 expression in epithelial cells. Moreover, AdipoR2 was strongly expressed in interstitial cells. However, the expression levels of these receptors did not show a strong correlation with various pathological factors. An in vitro experiment using two gastric cancer cell lines, MKN-74 and NUGC-3, showed that the expression levels of AdipoR1 and AdipoR2 were significantly decreased by transforming growth factor (TGF)-β in a dose-dependent manner. CONCLUSIONS:Two major adiponectin receptors were decreased in gastric cancer as compared to findings in normal gastric epithelium. TGF-β may be involved in this receptor downregulation. This downregulation may be an ideal strategy for cancer cells to escape the antiproliferative effects of adiponectin in the initial phase of tumor development.
journal_name
J Gastroenteroljournal_title
Journal of gastroenterologyauthors
Otani K,Kitayama J,Kamei T,Soma D,Miyato H,Yamauchi T,Kadowaki T,Nagawa Hdoi
10.1007/s00535-010-0228-2subject
Has Abstractpub_date
2010-09-01 00:00:00pages
918-27issue
9eissn
0944-1174issn
1435-5922journal_volume
45pub_type
杂志文章abstract:BACKGROUND:Gastric cancer stem cells (CSCs), which require activation of Wnt signaling to maintain their self-renewal and tumorigenicity, are proposed to be critical targets for effective therapy of gastric carcinomas. Gene therapies that are delivered by adenovirus of serotype 5 (Ad5) or chimeric 5/35(Ad5/35) adenovir...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-012-0711-z
更新日期:2013-07-01 00:00:00
abstract:BACKGROUND:Drug resistance in colorectal cancers is assumed to be mediated by changes in the expression of microRNAs, but the specific identities and roles of microRNAs are largely unclear. We examined the effect of 5-fluorouracil (5-FU) resistance on microRNA expression. METHODS:Two types of 5-FU-resistant colon canc...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-012-0547-6
更新日期:2012-08-01 00:00:00
abstract:BACKGROUND:Ghrelin is a novel 28-amino-acid peptide isolated from rat and human stomach. This peptide is an endogenous ligand for the growth hormone secretagogue receptor and stimulates the release of growth hormones. Although the principal site of ghrelin synthesis has been reported to be in the stomach, there have be...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-004-1550-3
更新日期:2005-04-01 00:00:00
abstract:BACKGROUND:This study aimed to develop a model to predict the development of severe anemia during pegylated interferon alpha-2b plus ribavirin combination therapy. METHODS:Data were collected from 1081 genotype 1b chronic hepatitis C patients who were treated at 6 hospitals in Japan. These patients were randomly assig...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-011-0412-z
更新日期:2011-09-01 00:00:00
abstract::Progressive familial intrahepatic cholestasis (PFIC) syndromes are characterized by defects in transporters of conjugated bile acids into the bile canaliculus. Three genes (ATP8B1, ABCB11, ABCB4) are associated with the different forms, but no easy genotype-phenotype correlations help in the prioritization for gene te...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-006-1816-z
更新日期:2006-06-01 00:00:00
abstract::Nonalcoholic fatty liver disease (NAFLD) is currently the most common cause of chronic liver disease in industrialized countries worldwide, and has become a serious public health issue not only in Western countries but also in many Asian countries including Japan. Within the wide spectrum of NAFLD, nonalcoholic steato...
journal_title:Journal of gastroenterology
pub_type: 杂志文章,实务指引
doi:10.1007/s00535-015-1050-7
更新日期:2015-04-01 00:00:00
abstract::As an increase in gastroesophageal reflux disease (GERD) has been reported in Japan, and public interest in GERD has been increasing, the Japanese Society of Gastroenterology published the Evidence-based Clinical Practice Guidelines for GERD (1st edition) in 2009. Six years have passed since its publication, and there...
journal_title:Journal of gastroenterology
pub_type: 杂志文章,实务指引,评审
doi:10.1007/s00535-016-1227-8
更新日期:2016-08-01 00:00:00
abstract::Soft drinks containing dietary fiber are popular in Japan. There seem to be two types, one containing polydextrose and the other, oligosaccharide. These beverages are claimed to be useful for constipation or obesity, but data are scanty. We examined four such fiber-containing beverages [Fibe-mini Otsuka Pharmaceutical...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/BF02347612
更新日期:1996-10-01 00:00:00
abstract::We investigated the therapeutic effects of egualen sodium (KT1-32), a new antiulcer agent, on chronic erosive and atrophic gastritis induced by 5 months' administration of sodium taurocholate (TCA; 5 mM) in rats. The chronic gastritis was manifested by mucosal surface injuries (erosions), reduced mucosal thickness, re...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/BF02358603
更新日期:1996-12-01 00:00:00
abstract:BACKGROUND:The purpose of our study was to evaluate the long-term outcome and complications of balloon-occluded retrograde transvenous obliteration (B-RTO) in patients with hemorrhage from gastric fundal varices. METHODS:Thirty-four consecutive patients with bleeding from gastric varices who were treated with B-RTO we...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-007-2077-1
更新日期:2007-08-01 00:00:00
abstract::5-aminosalicylate is a fundamental treatment for patients with ulcerative colitis with mild-to-moderate disease; however, evidence for 5-aminosalicylate treatment is unclear in some situations. This review discusses the clinical guidelines and previous studies, and highlights the following points: (1) Although rectal ...
journal_title:Journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.1007/s00535-020-01713-8
更新日期:2020-11-01 00:00:00
abstract::Chronic pancreatitis is a chronic clinical disorder characterized by irreversible damage to the pancreas and the development of histologic evidence of inflammation and fibrosis, and eventually the destruction and permanent loss of exocrine and endocrine tissue. A nationwide survey in Japan revealed an increase in the ...
journal_title:Journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.1007/s005350300058
更新日期:2003-01-01 00:00:00
abstract::Primary sclerosing cholangitis is very rare in Japan. The aim of the present study was to identify the characteristics of such patients in Japan. A questionnaire was sent to the members of the Japanese Society of Gastroenterology and responses for 192 cases were analyzed. There was male predominancy (61%), and two pea...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/BF01213311
更新日期:1997-02-01 00:00:00
abstract:BACKGROUND:Abrogating tolerance is a critical step in the pathogenesis of Crohn's disease (CD). T cell-anergy is one of the main mechanisms of tolerance and is regulated by the gene related to anergy in lymphocytes (GRAIL). This study investigated the expressions and regulation of GRAIL in CD and murine colitis models....
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-013-0923-x
更新日期:2014-12-01 00:00:00
abstract:BACKGROUND:Subepithelial myofibroblasts (SEMFs) play a role in extracellular matrix (ECM) metabolism in the colon. In this study, we investigated the effects of interleukin (IL)-17, IL-1beta, and tumor necrosis factor (TNF)-alpha on matrix metalloproteinase (MMP)-3 secretion in colonic SEMFs. METHODS:MMP-3 secretion a...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-002-1101-8
更新日期:2003-01-01 00:00:00
abstract::We report a case of gastric neuroendocrine (NE) carcinoma associated with chronic atrophic gastritis type A (CAG/A) or reversed atrophic type gastritis. A 9 x 6 cm tumor was resected from the stomach to control pain in a 55-year-old Japanese woman with peritoneal dissemination and metastatic tumors of the liver and ov...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/BF02934114
更新日期:1997-10-01 00:00:00
abstract:BACKGROUND:The relative contribution of gastric acid secretion and Helicobacter pylori infection to low-dose aspirin-induced gastropathy remains to be clarified. This is partly because the capability of the infection to modify gastric acid secretion complicates the interaction. The aim of this study was to estimate the...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-011-0385-y
更新日期:2011-05-01 00:00:00
abstract:BACKGROUND:Aberrant methylation of some cancer-related genes has been reported to correlate with sensitivity to chemotherapeutic agents. The present study was designed to determine whether DNA methylation in six cancer-related genes affects recurrence of gastric cancer in patients who received 5-fluorouracil-based adju...
journal_title:Journal of gastroenterology
pub_type: 临床试验,杂志文章
doi:10.1007/s00535-007-2113-1
更新日期:2007-11-01 00:00:00
abstract:BACKGROUND:The introduction of capsule endoscopy (CE) has facilitated the detection of mucosal changes in the small bowel, and such mucosal changes have been noted in cirrhotic patients with portal hypertension; these changes are described as portal hypertensive enteropathy. The aim of this study was to assess the effe...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-012-0660-6
更新日期:2013-05-01 00:00:00
abstract:BACKGROUND:Patients with psoriasis show a greater prevalence of non-alcoholic fatty liver disease (NAFLD) and metabolic syndrome than the general population. Moreover, patients with NAFLD and psoriasis are at higher risk of severe liver fibrosis than their counterparts with NAFLD and without psoriasis. The link between...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-012-0678-9
更新日期:2013-07-01 00:00:00
abstract::CYFRA 21-1 is a fragment of cytokeratin 19 (CK 19). Four patients with large intrahepatic (or peripheral) cholangiocarcinoma (CC) and high serum levels of CYFRA 21-1 (normal, < or = 2 ng/ml) are reported. CYFRA 21-1 levels exceeded 9 ng/ml in all 4 patients. Carcinoembryonic antigen (CEA), was high in 1 (CEA; normal r...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s005350050112
更新日期:1998-06-01 00:00:00
abstract:BACKGROUND:Circular RNAs (circRNAs) act as vital regulators of gene expression in a variety of cancers. However, the role of circRNAs in gastric cancer (GC) remains largely unexplored. Herein, we identified that circTMEM87A sponges miR-142-5p to promote GC progression through up-regulating ULK1 expression. METHODS:The...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-020-01744-1
更新日期:2020-11-06 00:00:00
abstract:BACKGROUND:In patients with hepatitis C virus (HCV)-genotype 1b and a high virus load, of more than 1 Meq/ml by the DNA probe assay, the clearance of HCV-RNA was achieved in only 10% with a 6-month interferon (IFN) course. We therefore assessed the efficacy of prolonged IFN therapy in patients with HCV-genotype 1b and ...
journal_title:Journal of gastroenterology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/s005350300026
更新日期:2003-01-01 00:00:00
abstract::We report two cirrhotic patients with gastric antral vascular ectasia (GAVE) in whom chronic blood loss presented a major problem. Case 1, a 69-year-old man, had alcoholic liver cirrhosis, and case 2, a 75-year-old woman, had liver cirrhosis associated with hepatitis C virus. The patients required repeated blood trans...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s005350050130
更新日期:1998-08-01 00:00:00
abstract::Chronic inflammatory bowel disease (IBD) is an important etiologic factor in the development of colorectal cancer. However, the mechanism underlying the development of colorectal cancers through chronic inflammation is not known. Activation-induced cytidine deaminase (AID) was originally identified as an inducer of so...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-010-0326-1
更新日期:2011-01-01 00:00:00
abstract:BACKGROUND:Recently, a significant relationship between gastric cancer and Helicobacter pylori infection has been proven. The purpose of this study was to elucidate the actual conditions of H. pylori infection in Japanese teenagers. METHODS:The study subjects were students at a certain high school between 2007 and 200...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-011-0450-6
更新日期:2011-12-01 00:00:00
abstract::A rare case of simple ulcer of the colon in a 7-year-old girl is reported. Simple ulcer is clinically and pathologically recognized as a serious disease linked to intestinal Behcet's disease. Recently, some immunomodulators, such as thalidomide and antitumor necrosis factor monoclonal antibody, have been used to treat...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s005350200122
更新日期:2002-01-01 00:00:00
abstract:BACKGROUND:Matrix metalloproteinases (MMPs) are one of the major classes of proteolytic enzymes involved in tumor invasion and metastasis, being inhibited by naturally occurring tissue inhibitors of metalloproteinases (TIMPs). In this study, we examined the expression of MMP-2, MMP-9, membrane-type 1 (MT1)-MMP, TIMP-1,...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-006-1975-y
更新日期:2007-02-01 00:00:00
abstract:BACKGROUND:Helicobacter pylori infection is associated not only with gastroduodenal ulcers but with the development of gastric cancer. Interleukin-1 beta (IL-1 beta) is a potent inhibitor of gastric secretion. The -31 C-to-T base transition in the intron of this gene has been reported to be involved in carcinogenic cha...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s005350170033
更新日期:2001-10-01 00:00:00
abstract::Using commercial quantitative assays, quantitative hepatitis B surface antigen (qHBsAg) has improved our understanding and management of chronic hepatitis B (CHB). The HBsAg level is highest in the immune tolerance phase, starts to decline during the immune clearance phase, and decreases slowly but progressively after...
journal_title:Journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.1007/s00535-012-0668-y
更新日期:2013-01-01 00:00:00