Abstract:
:In vivo progression to malignancy is characterized by the switch to an angiogenic phenotype. The angiogenic switch is a critical control point for tumor expansion. The ability of a tumor to become neovascularized permits rapid expansion of tumor growth and increases the likelihood of metastases. The genetic alterations that accompany the switch to the angiogenic phenotype are unknown. Discoveries of such genes lead to comprehension of molecular mechanisms of the tumor progression, as well as development of novel therapeutic tools. We have isolated a novel "angiogenic switch molecule," angiopoietin-2, upregulated specifically in hypervascular hepatocellular carcinoma (HCC). Angiopoietin family proteins have been originally identified as ligands of the vascular endothelial receptor of tyrosine kinase Tie2. Ectopic expression of angiopoietin-2 promotes the rapid development of human HCCs and produces hemorrhage within tumors in nude mice. These results suggest a role for angiopoietin-2 in the neovascularization of HCC. In vitro expression of a dominant-negative construct, containing a soluble Tie2 ectodomain (sTie2), led to Angiopoietin protein interaction, inhibition of endogenous Tie2 phosphorylation in vascular endothelial cells. Tumorigenicity with angiogenesis was suppressed by in vivo gene transfer and sTie2 expression in a murine HCC model, suggesting a possible role for angiopoietin/Tie2 signaling in the induction of HCC neovascularization and disease progression. More important, inhibition of the angiopoietin/Tie2 signal transduction cascade is a promising approach for HCC treatment.
journal_name
J Gastroenteroljournal_title
Journal of gastroenterologyauthors
Tanaka S,Sugimachi K,Yamashita Y,Shirabe K,Shimada M,Wands JR,Sugimachi Ksubject
Has Abstractpub_date
2003-03-01 00:00:00pages
93-7eissn
0944-1174issn
1435-5922journal_volume
38 Suppl 15pub_type
杂志文章,评审abstract:BACKGROUND:In the respiratory mucosa, interleukin (IL)-33, has been shown to enhance T helper 2 (TH2)-type responses through the master regulatory gene GATA-3. IL-33 is upregulated in ulcerative colitis (UC), and the aim was to assess if IL-33 holds a similar key position in the shaping of the immune response in experi...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-014-0982-7
更新日期:2015-02-01 00:00:00
abstract::Adult midgut rotational anomalies are difficult to diagnose. Any symptoms present in adults may be the result of intermittent volvulus of the midgut. Successful outcome of this clinical condition depends on prompt diagnosis and timely surgical intervention. Computed tomography (CT) is useful in early identification of...
journal_title:Journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.1007/s005350050052
更新日期:1998-02-01 00:00:00
abstract:BACKGROUND:Helicobacter pylori induces chronic inflammation and intestinal metaplasia (IM) through genetic and epigenetic changes and activation of intracellular signaling pathways that contribute to gastric carcinogenesis. However, the precise mechanism of IM in gastric carcinogenesis has not been fully elucidated. We...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-016-1176-2
更新日期:2016-10-01 00:00:00
abstract:BACKGROUND:Primary biliary cirrhosis (PBC) is histopathologically characterized by chronic nonsuppurative destructive cholangitis and ductopenia of interlobular bile ducts. Bile duct injury is also often encountered in chronic viral hepatitis (CVH) and in autoimmune hepatitis (AIH). METHODS:In this study, we performed...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-004-1514-7
更新日期:2005-02-01 00:00:00
abstract::A retrospective long-term endoscopic follow-up study was designed to examine atrophic changes in the gastric mucosa over time in Helicobacter pylori-positive patients. Over a period of 8-17 years (mean, 13.4 years) 22 subjects (5 men, 17 women, mean age, 55 years) without localized gastroduodenal lesions underwent ser...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/BF01213291
更新日期:1997-02-01 00:00:00
abstract::Nonrotation of the midgut in adults and appendiceal mucocele are both rare pathological conditions. We report here the first case of nonrotation of the midgut associated with appendiceal mucocele. The patient was a 51-year-old man admitted to hospital with ileus. An upper gastrointestinal series and a barium enema rev...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s005350170153
更新日期:2001-01-01 00:00:00
abstract::Aberrant methylation of CpG islands in promoter regions can permanently inactivate tumor-suppressor genes, as mutations and chromosomal abnormalities do. In gastric cancers, CDKN2A, CDH1, and MLH1 are inactivated more frequently by aberrant methylation than by mutations, and novel tumor-suppressor genes inactivated by...
journal_title:Journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.1007/s00535-006-1846-6
更新日期:2006-05-01 00:00:00
abstract::An association between Crohn's disease and gastric cancer has not been clearly defined. A 34-year-old man was referred to our hospital for the evaluation of a gastric lesion and treatment of small-bowel Crohn's disease. We diagnosed the gastric lesion as adenocarcinoma, using endoscopy and histological studies. The pa...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s535-002-8132-6
更新日期:2002-01-01 00:00:00
abstract:BACKGROUND:Combination therapy of intravenous hepatitis B immunoglobulin (ivHBIG) and nucleos(t)ide (NA) analogues is the best post-liver transplantation (LT) prophylactic measure for hepatitis B virus (HBV). However, to reduce the long-term drawbacks of ivHBIG, we evaluated the efficacy of sequential entecavir (ETV) m...
journal_title:Journal of gastroenterology
pub_type: 临床试验,杂志文章
doi:10.1007/s00535-013-0761-x
更新日期:2013-12-01 00:00:00
abstract:BACKGROUND:The transcription factor nuclear factor-E2-related factor-2 (Nrf2) inhibits lipid accumulation and oxidative stress in the liver by interfering with lipogenic pathways and inducing antioxidative stress genes. METHODS:The involvement of Nrf2 in defense against the development of steatohepatitis was studied i...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-012-0659-z
更新日期:2013-05-01 00:00:00
abstract::A 69-year-old woman was admitted to our hospital with fever and abdominal pain in the epigastric region. Abdominal ultrasonography demonstrated a well-defined hypoechoic mass in the epigastric region with encasement of the left hepatic lobe and stomach. Computed tomography confirmed a low-density mass, 20 cm in diamet...
journal_title:Journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.1007/s00535-003-1203-y
更新日期:2003-01-01 00:00:00
abstract:BACKGROUND:There have only been a few prospective studies investigating risk factors associated with the development of hepatocellular carcinoma (HCC) among chronic hepatitis B patients all over the world, and no study has been conducted in Japanese population. METHODS:A population-based cohort consisting of 19393 sub...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-010-0307-4
更新日期:2011-01-01 00:00:00
abstract:BACKGROUND:Hepatitis C virus (HCV) core protein is known to cause oxidative stress and alter apoptosis pathways. However, the apoptosis results are inconsistent, and the real significance of oxidative stress is not well known. The aim of this study was twofold. First, we wanted to confirm whether core-induced oxidative...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-005-1738-1
更新日期:2006-03-01 00:00:00
abstract:BACKGROUND:To further clarify the clinico-epidemiological features of autoimmune pancreatitis (AIP) in Japan, we conducted the fourth nationwide epidemiological survey. METHODS:This study consisted of two stage surveys; the number of AIP patients was estimated by the first survey and their clinical features were asses...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-019-01658-7
更新日期:2020-04-01 00:00:00
abstract:BACKGROUND:Nocturnal administration of branched-chain amino acid (BCAA) granules improves serum albumin levels in patients with cirrhosis. However, it is unclear whether or not this administration method can improve the patients' quality of life (QOL). In this study, we aimed to investigate the efficacy of BCAA granule...
journal_title:Journal of gastroenterology
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1007/s00535-012-0632-x
更新日期:2013-02-01 00:00:00
abstract::Pyogenic granulomas represent the aquisition of vasodilative granulation tissue in the skin or mucosa. They are extremely rare in the alimentary tract, other than in the oral cavity. Here, we report a case of pyogenic granuloma arising from the gastric mucosa. An 82-year-old man was admitted to our hospital because of...
journal_title:Journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.1007/s00535-004-1579-3
更新日期:2005-05-01 00:00:00
abstract::The clinical significance of the measurement of c-erbB-2 oncogene product was evaluated. The subjects consisted of 404 patients, including 248 with cancer of the digestive organs and 128 with benign digestive diseases. Serum c-erbB-2 protein levels were measured by sandwich immunoenzyme assay. The positive rates of c-...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/BF02365445
更新日期:1994-10-01 00:00:00
abstract:BACKGROUND:Because of the wide overlap between the groups, patients with reflux esophagitis (RE) cannot be distinguished from healthy subjects by basal lower esophageal sphincter (LES) pressure. The LES has radial asymmetry, with maximum pressure on the left side. It has been noted that one directional LES pressure, de...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-003-1355-9
更新日期:2004-07-01 00:00:00
abstract:BACKGROUND AND AIMS:Insulin-like growth factor (IGF)-I receptor (IGF-IR) signaling plays important parts in both the tumorigenicity and progression of digestive/gastrointestinal malignancies. In this study, we sought to test the effectiveness of a practical approach to blocking IGF-IR signaling using RNA interference d...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-009-0151-6
更新日期:2010-02-01 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:BACKGROUND:Efficacy and safety of interferon induction therapy alone or in combination with ribavirin or ribavirin plus amantadine were evaluated in chronic hepatitis C patients who were nonresponders to primary antiviral treatment. METHODS:The study was designed to have 225 HCV nonresponder patients, but at an interi...
journal_title:Journal of gastroenterology
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1007/s00535-007-2006-3
更新日期:2007-05-01 00:00:00
abstract::Magnetic resonance imaging (MRI) findings in three patients with primary anorectal malignant melanoma are described. Two patients had melanotic and one had amelanotic anorectal melanoma. The findings of MRI with a pelvic coil and an endorectal coil were consistent with pathologic findings. MRI with a pelvic coil demon...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-005-1638-4
更新日期:2005-08-01 00:00:00
abstract:BACKGROUND:We evaluated the sensitivity and specificity of post-vascular phase (Kupffer imaging) by contrast-enhanced ultrasonography (CEUS) using perflubutane microbubbles (Sonazoid) in comparison with conventional B-mode ultrasonography (US) for the detection of hepatocellular carcinoma (HCC) nodules. METHODS:A tota...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-011-0512-9
更新日期:2012-04-01 00:00:00
abstract::An extremely rare case of malignant schwannoma of the esophagus with lymph node metastasis is reported. A 49-year-old woman was found to have an abnormal shadow on a chest X-ray film taken during an annual checkup. Upper gastrointestinal series showed extrinsic pressure on the middle thoracic esophagus, without a muco...
journal_title:Journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.1007/s005350170020
更新日期:2001-11-01 00:00:00
abstract:BACKGROUND:Previous studies investigating the impact of tumor location on colorectal cancer prognosis only compared two groups by location, e.g., 'right-sided colon vs. left-sided colon,' 'colon vs. rectum,' and 'right-sided (right-sided colon) vs. left-sided (left-sided colon and rectum).' This nationwide multicenter ...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-020-01706-7
更新日期:2020-10-01 00:00:00
abstract::A case of life-threatening lower gastrointestinal hemorrhage from Crohn's disease is reported. Several promising studies have recently been published that describe superselective embolization for the treatment of massive lower gastrointestinal hemorrhage in patients with bleeding colonic diverticular disease and angio...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s00535-005-1714-9
更新日期:2005-12-01 00:00:00
abstract::The clinical significance of small intestinal damage caused by nonsteroidal anti-inflammatory drugs (NSAIDs) remains under-appreciated. It occurs with greater frequency than the damage caused by these drugs in the upper gastrointestinal tract, but is much more difficult to diagnose and treat. Although the pathogenesis...
journal_title:Journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.1007/s00535-014-1032-1
更新日期:2015-04-01 00:00:00
abstract::In this study, we used magnetic resonance (MR) imaging to measure portal blood flow in 12 healthy controls and 17 cirrhotics while they were breath-holding after inspiration and after expiration. We then compared the results with measurements made during normal respiration in the healthy controls and cirrhotics. Blood...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/s005350050381
更新日期:1999-10-01 00:00:00
abstract::Small bowel transit time (SBTT) in 15 young and 13 elderly women was assessed by measuring breath hydrogen concentrations after they had consumed a solid test meal. The meal consisted of 200 g cooked rice, 50 ml miso (made from fermented soy bean curd) soup, a boiled egg, and 95.5 g of cooked soy beans with mixed vege...
journal_title:Journal of gastroenterology
pub_type: 杂志文章
doi:10.1007/BF02934082
更新日期:1997-08-01 00:00:00
abstract:BACKGROUND:It is suggested that nonalcoholic fatty liver disease (NAFLD), including nonalcoholic fatty liver (NAFL) and nonalcoholic steatohepatitis (NASH), can be associated with insomnia and gastro-esophageal reflux disease (GERD). The relationship between GERD and insomnia in subjects with biopsy-proven NAFLD was in...
journal_title:Journal of gastroenterology
pub_type: 杂志文章,多中心研究
doi:10.1007/s00535-013-0871-5
更新日期:2014-07-01 00:00:00