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https://www.readbyqxmd.com/read/27914159/-molecular-mechanisms-for-adhesion-and-colonization-of-human-gastric-mucosa-by-helicobacter-pylori-and-its-clinical-implications
#1
REVIEW
Elisabete Coelho, Ana Magalhães, Mário Dinis-Ribeiro, Celso A Reis
INTRODUCTION: Helicobacter pylori infection is very prevalent worldwide and is associated with the progression of the gastric carcinogenesis cascade, being one of the main risk factors for the development of gastric carcinoma. Several factors are determinant for the infection and for the development of gastric disease, including environmental factors, host genetic factors and virulence factors of the bacteria. MATERIAL AND METHODS: In this review, we present an overview of the current knowledge on the determinants of the infection and on the recently described molecular mechanisms of Helicobacter pylori adhesion to the gastric mucosa, as well as its possible future therapeutic application...
August 2016: Acta Médica Portuguesa
https://www.readbyqxmd.com/read/27913437/surface-expression-of-tgf%C3%AE-docking-receptor-garp-promotes-oncogenesis-and-immune-tolerance-in-breast-cancer
#2
Alessandra Metelli, Bill X Wu, Caroline W Fugle, Saleh Rachidi, Shaoli Sun, Yongliang Zhang, Jennifer Wu, Stephen Tomlinson, Philip H Howe, Yi Yang, Elizabeth Garrett-Mayer, Bei Liu, Zihai Li
GARP encoded by the Lrrc32 gene is the cell surface docking receptor for latent TGFβ, which is expressed naturally by platelets and regulatory T cells (Treg). Although Lrrc32 is amplified frequently in breast cancer, the expression and relevant functions of GARP in cancer have not been explored. Here, we report that GARP exerts oncogenic effects, promoting immune tolerance by enriching and activating latent TGFβ in the tumor microenvironment. We found that human breast, lung, and colon cancers expressed GARP aberrantly...
October 20, 2016: Cancer Research
https://www.readbyqxmd.com/read/27911711/diaphanous-related-formin-1-as-a-target-for-tumor-therapy
#3
REVIEW
Yuan-Na Lin, Sabine Windhorst
Formins nucleate actin and stabilize microtubules (MTs). Expression of the formin Diaphanous homolog 1 (DIAPH1) is increased in malignant colon carcinoma cells, while expression of DIAPH3 is up-regulated in breast and prostate carcinoma cells. Both DIAPH1 isoforms are required to stabilize interphase MTs of cancer cells, and it has been shown that loss of this function decreases the metastatic potential of these cells. Moreover, depletion of DIAPH3 increases the sensitivity of breast and prostate carcinoma cells to taxanes...
October 15, 2016: Biochemical Society Transactions
https://www.readbyqxmd.com/read/27904307/hybrid-transvaginal-notes-and-mini-laparoscopic-colectomy-benefit-through-synergy
#4
Jayson M Moloney, Philip S L Gan
BACKGROUND AND OBJECTIVES: Hybrid-natural orifice surgery combines the advantages of traditional transabdominal laparoscopic surgery, while limiting surgical trauma to the abdominal wall. Among various routes of intra-abdominal access, the transvaginal method is most appealing because of its utility and proven safety. We describe a series of 4 colonic resections performed with this approach, combined with minilaparoscopy and needlescopic approaches, and discuss the technical aspects, efficacy, and applicability of this technique...
October 2016: JSLS: Journal of the Society of Laparoendoscopic Surgeons
https://www.readbyqxmd.com/read/27904130/solitary-metastasis-to-a-distant-lymph-node-in-the-descending-mesocolon-after-primary-resection-for-hepatocellular-carcinoma-is-surgical-resection-valid
#5
Yuki Aisu, Hiroaki Furuyama, Tomohide Hori, Takafumi Machimoto, Toshiyuki Hata, Yoshio Kadokawa, Shigeru Kato, Yasuhisa Ando, Yuichiro Uchida, Daiki Yasukawa, Yusuke Kimura, Maho Sasaki, Yuichiro Takamatsu, Tunehiro Yoshimura
BACKGROUND Lymph node metastasis of hepatocellular carcinoma is rare, and lymph nodes located on hepatic hilar and hepatoduodenal ligaments are primary targets. Metastasis to a mesocolic lymph node has not been reported previously. CASE REPORT A 65-year-old woman with liver cirrhosis underwent primary resection of hepatocellular carcinoma. Two and a half years later, tumor marker levels increased remarkably and imaging revealed a mesocolic mass. The tumor measured 27 mm in diameter and showed characteristic findings consistent with hepatocellular carcinoma in dynamic computed tomographic images, although the tumor was negative in fluorine-18-fluorodeoxyglucose positron emission tomographic images...
December 1, 2016: American Journal of Case Reports
https://www.readbyqxmd.com/read/27904083/novel-sulfonamide-derivatives-carrying-a-biologically-active-3-4-dimethoxyphenyl-moiety-as-vegfr-2-inhibitors
#6
Mostafa Mohammed Ghorab, Mansour Sulaiman Alsaid, Yassin Mohammed Nissan, Abdelkader Elbadawy Ashour, Abdullah Abdulalrahman Al-Mishari, Ashok Kumar, Sheikh Fayaz Ahmed
Novel sulfonamides 3-19 with a biologically active 3,4-dimethoxyphenyl moiety were designed and synthesized. The structures of the synthesized compounds were established using elemental analyses, IR, (1)H-NMR, (13)C-NMR spectral data and mass spectroscopy. All the synthesized compounds were evaluated for their in vitro anticancer activity against four cancer cell lines, namely human hepatocellular carcinoma (HepG2), human medulloblastoma (Daoy), human cervical cancer (HeLa), and human colon cancer (HT-29), by using a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and dasatinib as the reference drug...
2016: Chemical & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/27902402/pathogenic-properties-of-a-corynebacterium-diphtheriae-strain-isolated-from-a-case-of-osteomyelitis
#7
Renata Stavracakis Peixoto, Elena Hacker, Camila Azevedo Antunes, Dulanthi Weerasekera, Alexandre Alves de Souza de Oliveira Dias, Carlos Alberto Martins, Raphael Hirata, Kátia Regina Netto Dos Santos, Andreas Burkovski, Ana Luíza Mattos-Guaraldi
Corynebacterium diphtheriae is typically recognized as a colonizer of the upper respiratory tract (respiratory diphtheria) and the skin (cutaneous diphtheria). However, different strains of Corynebacteriumdiphtheriae can also cause invasive infections. In this study, the characterization of a non-toxigenic Corynebacteriumdiphtheriae strain (designated BR-INCA5015) isolated from osteomyelitis in the frontal bone of a patient with adenoid cystic carcinoma was performed. Pathogenic properties of the strain BR-INCA5015 were tested in a Caenorhabditis elegans survival assay showing strong colonization and killing by this strain...
November 2016: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27902314/newcastle-disease-virus-degrades-hif-1%C3%AE-through-proteasomal-pathways-independent-of-vhl-and-p53
#8
Noraini Abd-Aziz, Eric Stanbridge, Norazizah Shafee
Newcastle disease virus (NDV) is a candidate agent for oncolytic virotherapy. Despite its potential, the exact mechanism of its oncolysis is still not known. Recently, we reported that NDV exhibited an increased oncolytic activity in hypoxic cancer cells. These types of cells negatively affect therapeutic outcome by overexpressing pro-survival genes under the control of the hypoxia-inducible factor (HIF). HIF-1 is a heterodimeric transcriptional factor consisting of a regulated alpha (HIF-1α) and a constitutive beta subunit (HIF-1β)...
October 6, 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27901355/folic-acid-conjugated-and-ag-carrying-organoclay-nanoparticles-and-their-response-to-l929-fibroblast-and-dld-1-cancer-cells
#9
Zakir M O Rzayev, Sevda Khalilova, Kouroush Salimi
This work presents the synthesis and characterization of intercalated nanocomposites (NCs) from dispersed water solution blends of octadecyl amine-montmorillonite (ODA-MMT) (NC-0), folic acid (FA) conjugated ODA-MMT (NC-1) and Ag-MMT clay as a stable silver carrying agent (NC-2). The composition, chemical/physical and morphology of NCs with in situ intercalating nanostructures were investigated. Effect of organoclay, FA and Ag-MMT on L929 fibroblast (control), human colon carcinoma (DLD-1) cell lines, and the cytotoxicity, apoptosis and necrosis degree were estimated via WST-1/hemocytometric, double staining (as a ribonuclease A enzyme based method) and fluorescence microscopy methods in dose-dependent manner...
November 30, 2016: Journal of Microencapsulation
https://www.readbyqxmd.com/read/27901346/capsaicin-modulates-the-immune-cross-talk-between-human-mononuclears-and-cells-from-two-colon-carcinoma-lines
#10
Hanna Bessler, Meir Djaldetti
BACKGROUND: Capsaicin, the pungent alkaloid of the chili peppers, has gained a worldwide reputation. In addition to its culinary assets, capsaicin possesses analgesic, anti-inflammatory, antimicrobial, and even carcinopreventive properties. Considering the linkage between chronic inflammation and tumorigenesis, the aim of the study was to evaluate the role of capsaicin in the immune interplay between human peripheral blood mononuclear cells (PBMCs) and HT-29 or RKO cells from human colon carcinoma lines...
November 30, 2016: Nutrition and Cancer
https://www.readbyqxmd.com/read/27901021/tmed3-promotes-hepatocellular-carcinoma-progression-via-il-11-stat3-signaling
#11
Hao Zheng, Yuan Yang, Jun Han, Wei-Hua Jiang, Cheng Chen, Meng-Chao Wang, Rong Gao, Shuai Li, Tao Tian, Jian Wang, Li-Jun Ma, Hao Ren, Wei-Ping Zhou
Transmembrane p24 trafficking protein 3(TMED3) is a metastatic suppressor in colon cancer, but its function in the progression of hepatocellular carcinoma (HCC) is unknown. Here, we report that TMED3 was up-regulated in HCC and portal vein tumor thrombus. TMED3 up-regulation in HCC was significantly correlated with aggressive characteristics and predicted poor prognosis in HCC patients. TMED3 overexpression in HCC cell lines promoted cell migration and invasion. In contrast, TMED3 knockdown suppressed HCC metastasis both in vitro and in vivo...
November 30, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27896849/cytoplasmic-msh2-immunoreactivity-in-a-patient-with-lynch-syndrome-with-an-epcam-msh2-fusion
#12
Shigeki Sekine, Reiko Ogawa, Shinya Saito, Mineko Ushiama, Dai Shida, Takeshi Nakajima, Hirokazu Taniguchi, Nobuyoshi Hiraoka, Teruhiko Yoshida, Kokichi Sugano
AIMS: Immunohistochemistry for mismatch repair (MMR) proteins is being increasingly used to examine MMR status in tumours. The aim of the present article was to report the case of a colon cancer patient with Lynch syndrome who showed unusual cytoplasmic MMR protein localization. METHODS AND RESULTS: Histologically, the colon cancer was diagnosed as medullary carcinoma associated with prominent tumour-infiltrating lymphocytes and a Crohn's-like reaction. Immunohistochemistry revealed cytoplasmic and nuclear expression of MSH2 in non-neoplastic cells, and exclusively cytoplasmic expression in tumour cells...
October 19, 2016: Histopathology
https://www.readbyqxmd.com/read/27895741/the-prognostic-significance-of-estrogen-receptor-%C3%AE-in-head-and-neck-squamous-cell-carcinoma
#13
Kresimir Grsic, Iva Ledinsky Opacic, Sanda Sitic, Marija Milkovic Perisa, Petar Suton, Bozena Sarcevic
Head and neck squamous cell carcinoma (HNSCC) is the fifth most common cancer in the world. Although multimodal and targeted therapy is now used in therapeutic procedures, the survival of patients with HNSCC has remained unchanged over the last 30 years. A number of studies have demonstrated that the increased expression of intranuclear ERβ in breast, lung and colon cancer is a favorable prognostic marker associated with higher survival rates. However, the clinical significance of sex hormone receptors in HNSCC remains unclear...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27895316/investigating-cytokinesis-failure-as-a-strategy-in-cancer-therapy
#14
Callum McKenzie, Pier Paolo D'Avino
Effective therapeutics exploit common characteristics shared amongst cancers. As many cancers present chromosomal instability (CIN), one possible approach to treat these cancers could be to increase their CIN above a threshold that would affect their viability. Here, we investigated whether causing polyploidy by cytokinesis failure could represent a useful approach. We show that cytokinesis failure caused by depletion of Citron kinase (CIT-K) dramatically decreased cell proliferation in breast, cervical and colorectal cancer cells...
November 24, 2016: Oncotarget
https://www.readbyqxmd.com/read/27894318/surgical-treatment-of-recurrent-urachal-carcinoma-with-liver-metastasis-a-case-report-and-literature-review
#15
Lukasz Paschke, Miroslaw Juszczak, Maciej Slupski
BACKGROUND: Urachal carcinoma is a rare malignancy with poor prognosis due to late presentation of the disease and its aggressiveness. Surgery remains the mainstay of therapy even in cases of disease recurrence. To the best of our knowledge, this is the first report of salvage surgery in the case of urachal carcinoma with liver metastasis. CASE PRESENTATION: The patient was a young woman who suffered from locally advanced urachal carcinoma treated with en-bloc cystectomy, hysterectomy with bilateral adnexectomy, partial resection of the sigmoid colon, and partial resection of the rectus abdominis muscle with the fascia, skin, and umbilicus...
November 28, 2016: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/27891756/motility-patterns-in-mouse-colon-gastrointestinal-dysfunction-induced-by-anticancer-chemotherapy
#16
REVIEW
N J Spencer
Colon cancer is a leading cause of cancer-related death in humans. 5-Fluorouracil (5-FU), a major chemotherapy treatment, has been used for decades to fight numerous types of cancers, including breast, colon, and head and neck carcinomas. Unfortunately, a large proportion of patients treated with 5-FU develop toxicities that include diarrhea, mucositis, neutropenia, and vomiting. While the side effects of 5-FU are well known, the mechanisms underlying the induction of these unpleasant symptoms are poorly understood...
December 2016: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/27891617/signet-ring-cell-carcinoma-of-resectable-metastatic-colorectal-cancer-has-rare-surgical-value
#17
Jianfei Fu, Lunpo Wu, Mengjie Jiang, Yinuo Tan, Dan Li, Fei Chen, Ting Jiang, Jinlin Du
BACKGROUND AND OBJECTIVES: Signet ring cell carcinoma (SRCC) is a uniquely separated subgroup in metastatic colorectal cancer (mCRC). The aims are to investigate the value of resection in patients with resectable metastatic signet ring cell colorectal cancer. METHODS: Patients with mCRC who underwent resection in Surveillance, Epidemiology, and End Results database during 1998-2010 were retrospectively analyzed. Kaplan-Meier and COX models were used to analyze the differences in the survival...
November 27, 2016: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/27890867/obesity-related-digestive-diseases-and-their-pathophysiology
#18
REVIEW
Su Youn Nam
Obesity is a growing medical and public health problem worldwide. Many digestive diseases are related to obesity. In this article, the current state of our knowledge of obesity-related digestive diseases, their pathogenesis, and the medical and metabolic consequences of weight reduction are discussed. Obesity-related digestive diseases include gastroesophageal reflux disease, Barrett's esophagus, esophageal cancer, colon polyp and cancer, nonalcoholic fatty liver disease, hepatitis C-related disease, hepatocellular carcinoma, gallstone, cholangiocarcinoma, and pancreatic cancer...
November 29, 2016: Gut and Liver
https://www.readbyqxmd.com/read/27889631/design-synthesis-and-cytotoxicity-studies-of-novel-pyrazolo-1-5-a-pyridine-derivatives
#19
Chitrakar Ravi, Arem Qayum, Darapaneni Chandra Mohan, Shashank K Singh, Subbarayappa Adimurthy
Copper-mediated synthesis of various pyrazolo[1, 5-a]pyridine-3-carboxylates has been described. The biological activities of these molecules have been evaluated against various human cancer cell lines A549 (Lung adenocarcinoma cell line), MCF-7 (Breast carcinoma cell line), HCT-116 (Colon cancer cell line), and PC-3 (Prostate cancer cell line) through SRB assay. Compound 247 led to accumulation MCF-7 cells in G1-phase and revealed its important role in mitotic cell cycle progression.
November 17, 2016: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/27889570/inhibitor-of-apoptosis-protein-1-regulates-tumor-necrosis-factor-mediated-destruction-of-intestinal-epithelial-cells
#20
Thomas Grabinger, Konstantin J Bode, Janine Demgenski, Carina Seitz, M Eugenia Delgado, Feodora Kostadinova, Cindy Reinhold, Nima Etemadi, Sabine Wilhelm, Matthias Schweinlin, Kay Hänggi, Janin Knop, Christof Hauck, Heike Walles, John Silke, Harald Wajant, Ueli Nachbur, W Wei-Lynn Wong, Thomas Brunner
BACKGROUND AND AIMS: Tumor necrosis factor (TNF) is a cytokine that promotes inflammation and contributes to pathogenesis of inflammatory bowel diseases. Unlike other cells and tissues, intestinal epithelial cells undergo rapid cell death upon exposure to TNF, by unclear mechanisms. We investigated the roles of inhibitor of apoptosis proteins (IAPs) in the regulation of TNF-induced cell death in the intestinal epithelium of mice and intestinal organoids. METHODS: RNA from cell lines and tissues and analyzed by quantitative PCR, protein levels were analyzed by immunoblot assays...
November 23, 2016: Gastroenterology
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