Aberrant promoter methylation of p16 in colorectal adenocarcinoma in North Indian patients.

Abstract:

AIM:To investigate p16 gene methylation and its expression in 30 patients with sporadic colorectal adenocarcinoma in a North Indian population. METHODS:Methylation specific polymerase chain reaction was used to detect p16 gene methylation and immunohistochemistry was used to study the p16 expression in 30 sporadic colorectal tumors as well as adjoining and normal tissue specimens. RESULTS:Aberrant promoter methylation of p16 gene was detected in 12 (40%) tumor specimens, whereas no promoter methylation was observed in adjoining and normal tissue. Immunohistochemistry showed expression of p16 protein in 26 (86.6%) colorectal tumors whereas complete loss of expression was seen in 4 (13.3%) and reduced expression was observed in 12 (40%) tumors. In the adjoining mucosa, expression of p16 was in 11 (36.6%) whereas no clear positivity for p16 protein was seen in normal tissue. There was a significant difference in the expression of p16 protein in tumor tissue and adjoining mucosa (P < 0.001). The methylation of the p16 gene had a significant effect on the expression of p16 protein (P = 0.021). There was a significant association of methylation of p16 gene with the tumor size (P = 0.015) and of the loss/reduced expression of p16 protein with the proximal site of the tumor (P = 0.047). Promoter methylation and expression of p16 had no relation with the survival of the patients (P > 0.05). CONCLUSION:Our study demonstrated that promoter hypermethylation of the p16 gene results in loss/reduced expression of p16 protein and this loss/reduced expression may contribute to tumor enlargement.

authors

Malhotra P,Kochhar R,Vaiphei K,Wig JD,Mahmood S

doi

10.4251/wjgo.v2.i7.295

subject

Has Abstract

pub_date

2010-07-15 00:00:00

pages

295-303

issue

7

issn

1948-5204

journal_volume

2

pub_type

杂志文章
  • Epigenetic field defects in progression to cancer.

    abstract::A field defect is a field of pre-malignant tissue in which a new cancer is likely to arise. Field defects often appear to be histologically normal under the microscope. Recent research indicates that cells within a field defect characteristically have an increased frequency of epigenetic alterations and these may be f...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 杂志文章

    doi:10.4251/wjgo.v5.i3.43

    authors: Bernstein C,Nfonsam V,Prasad AR,Bernstein H

    更新日期:2013-03-15 00:00:00

  • Novel therapeutic agents in the treatment of metastatic colorectal cancer.

    abstract::Over the past couple of decades considerable progress has been made in the management of metastatic colorectal cancers (mCRC) leading to a significant improvement in five-year survival. Although part of this success has been rightly attributed to aggressive surgical management and advances in other adjunct treatments,...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 杂志文章,评审

    doi:10.4251/wjgo.v8.i1.99

    authors: Pai SG,Fuloria J

    更新日期:2016-01-15 00:00:00

  • Primary esophageal diffuse large B cell lymphoma presenting with tracheoesophageal fistula: A rare case and review.

    abstract::Primary non-Hodgkin lymphomas in the esophagus are rare. Tracheoesophageal fistulas mainly arise from solid esophageal carcinoma or mediastinal malignancies. Our patient presented with cough, dysphagia and weight loss, and upon initial computed tomography imaging and esophagogastroduodenoscopy, a malignant mass in the...

    journal_title:World journal of gastrointestinal oncology

    pub_type:

    doi:10.4251/wjgo.v9.i10.431

    authors: Teerakanok J,DeWitt JP,Juarez E,Thein KZ,Warraich I

    更新日期:2017-10-15 00:00:00

  • Carcinogenesis and chemoprevention of biliary tract cancer in pancreaticobiliary maljunction.

    abstract::Pancreaticobiliary maljunction (PBM) is a high risk factor for biliary tract cancer. In PBM, since the pancreatic duct and bile duct converge outside the duodenal wall beyond the influence of the sphincter of Oddi, pancreatic juice and bile are constantly mixed, producing a variety of harmful substances. Because of th...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 杂志文章

    doi:10.4251/wjgo.v2.i3.130

    authors: Tsuchida A,Itoi T

    更新日期:2010-03-15 00:00:00

  • Laparoscopic and endoscopic cooperative surgery for gastric tumors: Perspective for actual practice and oncological benefits.

    abstract::Laparoscopic and endoscopic cooperative surgery (LECS) is a surgical technique that combines laparoscopic partial gastrectomy and endoscopic submucosal dissection. LECS requires close collaboration between skilled laparoscopic surgeons and experienced endoscopists. For successful LECS, experience alone is not sufficie...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 杂志文章,评审

    doi:10.4251/wjgo.v10.i11.381

    authors: Aisu Y,Yasukawa D,Kimura Y,Hori T

    更新日期:2018-11-15 00:00:00

  • Colorectal carcinogenesis: Insights into the cell death and signal transduction pathways: A review.

    abstract::Colorectal carcinogenesis (CRC) imposes a major health burden in developing countries. It is the third major cause of cancer deaths. Despite several treatment strategies, novel drugs are warranted to reduce the severity of this disease. Adenomatous polyps in the colon are the major culprits in CRC and found in 45% of ...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 杂志文章,评审

    doi:10.4251/wjgo.v10.i9.244

    authors: Pandurangan AK,Divya T,Kumar K,Dineshbabu V,Velavan B,Sudhandiran G

    更新日期:2018-09-15 00:00:00

  • Targeted agents for second-line treatment of advanced hepatocellular carcinoma.

    abstract::Over the past ten years, sorafenib, a multikinase inhibitor, has been the standard of care for patients with unresectable hepatocellular carcinoma (HCC) and well-preserved liver function. Recently, lenvatinib, a different multikinase inhibitor, was shown to be non-inferior to sorafenib, in terms of survival, while all...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 杂志文章,评审

    doi:10.4251/wjgo.v11.i10.788

    authors: Personeni N,Pressiani T,Bozzarelli S,Rimassa L

    更新日期:2019-10-15 00:00:00

  • C-reactive protein may be a prognostic factor for the whole gastroenteropancreatic neuroendocrine tumor group.

    abstract:BACKGROUND:Long non-coding RNAs (lncRNAs) are a kind of single-stranded RNA of more than 200 nucleotides in length and have no protein-coding function. Amounting studies have indicated that lncRNAs could play a vital role in the initiation and development of cancers, including gastric cancer (GC). Considering the cruci...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 杂志文章

    doi:10.4251/wjgo.v11.i2.139

    authors: Komaç Ö,Bengi G,Sağol Ö,Akarsu M

    更新日期:2019-02-15 00:00:00

  • Outcome of curative resection for perihilar cholangiocarcinoma in Northeast Thailand.

    abstract:AIM:To examine survival outcomes of perihilar cholangiocarcinoma (PCCA) resection including mortality, morbidity and prognostic factors. METHODS:Multivariate analyses were carried out based on the survival data of all patients with histologically confirmed PCCA who underwent curative resection at Srinagarind Hospital ...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 杂志文章

    doi:10.4251/wjgo.v7.i12.503

    authors: Titapun A,Pugkhem A,Luvira V,Srisuk T,Somintara O,Saeseow OT,Sripanuskul A,Nimboriboonporn A,Thinkhamrop B,Khuntikeo N

    更新日期:2015-12-15 00:00:00

  • Gastric submucosa-invasive carcinoma associated with Epstein-Barr virus and endoscopic submucosal dissection: A case report.

    abstract:BACKGROUND:Epstein-Barr virus (EBV)-associated carcinoma is a gastric cancer subtype with a morphology characterized by gastric carcinoma with lymphoid stroma (GCLS). Clinicopathological studies have indicated a better prognosis for GCLS than for common gastric carcinomas. Some previous cases of early gastric cancer as...

    journal_title:World journal of gastrointestinal oncology

    pub_type:

    doi:10.4251/wjgo.v11.i10.925

    authors: Kobayashi Y,Kunogi T,Tanabe H,Murakami Y,Iwama T,Sasaki T,Takahashi K,Ando K,Nomura Y,Ueno N,Kashima S,Moriichi K,Takei H,Fujiya M,Okumura T

    更新日期:2019-10-15 00:00:00

  • Three novel NEIL1 promoter polymorphisms in gastric cancer patients.

    abstract:AIM:To identify genetic polymorphisms in the promoter region of the human base excision repair gene NEIL1 in gastric cancer patients. METHODS:The NEIL1 promoter region in DNA from 80 Japanese patients with gastric cancer was searched for genetic polymorphisms by polymerase chain reaction-single-strand conformation pol...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 杂志文章

    doi:10.4251/wjgo.v2.i2.117

    authors: Goto M,Shinmura K,Tao H,Tsugane S,Sugimura H

    更新日期:2010-02-15 00:00:00

  • Gallbladder cancer harboring ERBB2 mutation on the primary and metastatic site: A case report.

    abstract:BACKGROUND:Bile duct cancer constitutes gallbladder cancer (GBC), intrahepatic cholangiocarcinoma (ICA), and extrahepatic cholangiocarcinoma (ECA). These three entities show morphological and immunohistochemical resemblance so that it is difficult to differentiate between primary ICA and liver metastasis of GBC, which ...

    journal_title:World journal of gastrointestinal oncology

    pub_type:

    doi:10.4251/wjgo.v11.i9.761

    authors: Inagaki C,Maeda D,Kimura A,Otsuru T,Iwagami Y,Nishida N,Sakai D,Shitotsuki R,Yachida S,Doki Y,Satoh T

    更新日期:2019-09-15 00:00:00

  • Fibrin sealant for esophageal anastomosis: A phase II study.

    abstract:BACKGROUND:Esophagectomy is a pivotal curative modality for localized esophageal or esophagogastric junction cancer (EC or EJC). Postoperative anastomotic leakage (AL) remains problematic. The use of fibrin sealant (FS) may improve the strength of esophageal anastomosis and reduce the incidence of AL. AIM:To assess th...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 临床试验

    doi:10.4251/wjgo.v12.i6.651

    authors: Lin YB,Fu JH,Huang Y,Hu YH,Luo KJ,Wang KX,Bella AÉ,Situ DR,Chen JY,Lin T,D'Journo XB,Novoa NM,Brunelli A,Fernando HC,Cerfolio RJ,Ismail M,Yang H,AME Thoracic Surgery Collaborative Group.

    更新日期:2020-06-15 00:00:00

  • Emerging molecular targets and therapy for cholangiocarcinoma.

    abstract::Cholangiocarcinoma (CCA) is a rare cancer arising from the biliary tree with a poor prognosis and limited therapeutic options. Recent large scale molecular characterisation studies have identified recurrent genetic alterations in CCA which may be amenable to therapeutic targeting. In this review we explore the genomic...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 杂志文章,评审

    doi:10.4251/wjgo.v9.i7.268

    authors: Kayhanian H,Smyth EC,Braconi C

    更新日期:2017-07-15 00:00:00

  • Tumor stem cell, or its niche, which plays a primary role in tumorigenesis?

    abstract::Cancer research over the past decades has focused on neoplastic cells, or a fraction of them, i.e. tumor stem cells, as the ultimate causes of tumorigenesis. However, during recent years, scientists have come to realize that tumorigenesis is not a solo act of neoplastic cells, but rather a cooperative process in which...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 杂志文章

    doi:10.4251/wjgo.v2.i5.218

    authors: Zhu J,Ding J,Ding F

    更新日期:2010-05-15 00:00:00

  • Perineural invasion as a prognostic factor in patients with stage I-III rectal cancer - 5-year follow up.

    abstract:BACKGROUND:Rectal cancer (RC) is one of the most common diagnosed cancers, and one of the major causes of cancer-related death nowadays. Majority of the current guidelines rely on TNM classification regarding therapy regiments, however recent studies suggest that additional histopathological findings could affect the d...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 杂志文章

    doi:10.4251/wjgo.v12.i5.592

    authors: Stojkovic Lalosevic M,Milovanovic T,Micev M,Stojkovic M,Dragasevic S,Stulic M,Rankovic I,Dugalic V,Krivokapic Z,Pavlovic Markovic A

    更新日期:2020-05-15 00:00:00

  • Relationship between celiac artery variation and number of lymph nodes dissection in gastric cancer surgery.

    abstract:BACKGROUND:Radical D2 lymphadenectomy for advanced gastric cancer as a standard procedure has gained global consensus. Mounting studies have shown that the number of lymph nodes dissection directly affects the prognosis and recurrence of gastric cancer. Our previous study showed that there was no obvious lymph node aro...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 杂志文章

    doi:10.4251/wjgo.v11.i6.499

    authors: Mu GC,Huang Y,Liu ZM,Chen ZB,Wu XH,Qin XG,Zeng YJ

    更新日期:2019-06-15 00:00:00

  • Isolated pancreatic metastasis of hepatocellular carcinoma after curative resection.

    abstract::Hepatocellular carcinoma (HCC) is a highly malignant tumor and extrahepatic metastasis is not rare. The most common organ of HCC metastasis is lung, followed by bone and adrenal gland. To the best of our knowledge, isolated pancreatic metastasis of HCC that developed after curative resection has not been described pre...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 杂志文章

    doi:10.4251/wjgo.v2.i4.209

    authors: Woo SM,Park JW,Han SS,Choi JI,Lee WJ,Park SJ,Hong EK,Kim CM

    更新日期:2010-04-15 00:00:00

  • Minimally invasive surgical approach to pancreatic malignancies.

    abstract::Pancreatic surgery for malignancy is recognized as challenging for the surgeons and risky for the patients due to consistent perioperative morbidity and mortality. Furthermore, the oncological long-term results are largely disappointing, even for those patients who experience an uneventfully hospital stay. Nevertheles...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 杂志文章,评审

    doi:10.4251/wjgo.v7.i12.411

    authors: Bencini L,Annecchiarico M,Farsi M,Bartolini I,Mirasolo V,Guerra F,Coratti A

    更新日期:2015-12-15 00:00:00

  • Optimizing outcomes for patients with gastric cancer peritoneal carcinomatosis.

    abstract::Peritoneal carcinomatosis (PC) from gastric cancer has traditionally been considered a terminal progression of the disease and is associated with poor survival outcomes. Positive peritoneal cytology similarly worsens the survival of patients with gastric cancer and treatment options for these patients have been limite...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 社论

    doi:10.4251/wjgo.v10.i10.282

    authors: Leiting JL,Grotz TE

    更新日期:2018-10-15 00:00:00

  • Parenchyma-sparing pancreatectomies for benign or border-line tumors of the pancreas.

    abstract::Standard pancreatic resections, such as pancreaticoduodenectomy, distal pancreatectomy, or total pancreatectomy, result in an important loss of normal pancreatic parenchyma and may cause impairment of exocrine and endocrine function. Whilst these procedures are mandatory for malignant tumors, they seem to be too exten...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 杂志文章

    doi:10.4251/wjgo.v2.i6.272

    authors: Sperti C,Beltrame V,Milanetto AC,Moro M,Pedrazzoli S

    更新日期:2010-06-15 00:00:00

  • Perioperative treatment options in resectable pancreatic cancer - how to improve long-term survival.

    abstract::Surgery remains the only chance of cure for pancreatic cancer, but only 15%-25% of patients present with resectable disease at the time of primary diagnosis. Important goals in clinical research must therefore be to allow early detection with suitable diagnostic procedures, to further broaden operation techniques and ...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 杂志文章,评审

    doi:10.4251/wjgo.v8.i3.248

    authors: Sinn M,Bahra M,Denecke T,Travis S,Pelzer U,Riess H

    更新日期:2016-03-15 00:00:00

  • Pneumo-CT assessing response to neoadjuvant therapy in esophageal cancer: Imaging-pathological correlation.

    abstract::Pneumo-computed tomography (PnCT) is a technique primarily developed and used to study stenotic lesions of the esophagus, gastroesophageal junction and stomach for pre-surgical planning. It helps to define both upper and lower borders of neoplasms located in the aforementioned areas. It achieves maximum lumen distensi...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 杂志文章,评审

    doi:10.4251/wjgo.v5.i12.222

    authors: Ulla M,Gentile E,Yeyati EL,Diez ML,Cavadas D,Garcia-Monaco RD,Ros PR

    更新日期:2013-12-15 00:00:00

  • Endoscopic electronic record: A new approach for improving management of colorectal cancer prevention.

    abstract::Digestive endoscopy is currently the main diagnostic procedure for investigation of the digestive tract when a digestive disease is suspected. The use of computers and electronic medical records for the management of endoscopic data are an important key to improving endoscopy unit efficiency and productivity. This tec...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 杂志文章

    doi:10.4251/wjgo.v4.i4.76

    authors: Maserat E,Safdari R,Maserat E,Zali MR

    更新日期:2012-04-15 00:00:00

  • Adenocarcinoma of the small bowel in a patient with occlusive Crohn's disease.

    abstract::A 40-year-old male, diagnosed with mild Crohn's disease (CD) 11 years ago but with no prior abdominal surgeries, was diagnosed with a small bowel stricture, due to ongoing abdominal pain and intolerance of enteral diet, and referred for surgical treatment. Exploratory laparoscopy revealed a white solid mass causing a ...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 杂志文章

    doi:10.4251/wjgo.v4.i7.184

    authors: Drukker L,Edden Y,Reissman P

    更新日期:2012-07-15 00:00:00

  • Bayesian adjustment for over-estimation and under-estimation of gastric cancer incidence across Iranian provinces.

    abstract:AIM:To correct the misclassification in registered gastric cancer incidence across Iranian provinces in cancer registry data. METHODS:Gastric cancer data is extracted from Iranian annual of national cancer registration report 2008. A Bayesian method with beta prior is implemented to estimate the rate of misclassificat...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 杂志文章

    doi:10.4251/wjgo.v9.i2.87

    authors: Hajizadeh N,Pourhoseingholi MA,Baghestani AR,Abadi A,Zali MR

    更新日期:2017-02-15 00:00:00

  • Gastrointestinal neuroendocrine tumors in 2020.

    abstract::Gastrointestinal neuroendocrine tumors are rare slow-growing tumors with distinct histological, biological, and clinical characteristics that have increased in incidence and prevalence within the last few decades. They contain chromogranin A, synaptophysin and neuron-specific enolase which are necessary for making a d...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 杂志文章,评审

    doi:10.4251/wjgo.v12.i8.791

    authors: Ahmed M

    更新日期:2020-08-15 00:00:00

  • Clinical significance of SQSTM1/P62 and nuclear factor-κB expression in pancreatic carcinoma.

    abstract:BACKGROUND:Overexpression of SQSTM1 (sequestosome 1, P62) and nuclear factor-κB (NF-κB) plays an important role in the invasion and metastasis of a variety of malignant tumors. AIM:To explore the expression of P62 and NF-κB in pancreatic cancer and their relationship with clinicopathological features. METHODS:The exp...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 杂志文章

    doi:10.4251/wjgo.v12.i7.719

    authors: Zhang ZY,Guo S,Zhao R,Ji ZP,Zhuang ZN

    更新日期:2020-07-15 00:00:00

  • Gastric metastasis from primary lung adenocarcinoma mimicking primary gastric cancer.

    abstract::Gastric metastases from lung adenocarcinoma are rare. Because gastric metastasis grossly resembles advanced gastric cancer, it is difficult to diagnose gastric metastasis especially when the histology of the primary lung cancer is adenocarcinoma. We describe a case of gastric metastasis from primary lung adenocarcinom...

    journal_title:World journal of gastrointestinal oncology

    pub_type:

    doi:10.4251/wjgo.v7.i3.12

    authors: Kim MJ,Hong JH,Park ES,Byun JH

    更新日期:2015-03-15 00:00:00

  • Toll-like receptor 9 polymorphisms and Helicobacter pylori influence gene expression and risk of gastric carcinogenesis in the Brazilian population.

    abstract:BACKGROUND:Toll-like receptors (TLRs) are the first line of host defense, and are involved in Helicobacter pylori (H. pylori) recognition and activation of both inflammatory and carcinogenic processes. The presence of single nucleotide polymorphisms (SNPs) in genes that activate the immune response may modulate the ris...

    journal_title:World journal of gastrointestinal oncology

    pub_type: 杂志文章

    doi:10.4251/wjgo.v11.i11.998

    authors: Susi MD,Lourenço Caroline M,Rasmussen LT,Payão SLM,Rossi AFT,Silva AE,de Oliveira-Cucolo JG

    更新日期:2019-11-15 00:00:00