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https://www.readbyqxmd.com/read/28219770/silencing-of-the-mrna-binding-protein-hur-increases-the-sensitivity-of-colorectal-cancer-cells-to-ionizing-radiation-through-upregulation-of-caspase-2
#1
Amel Badawi, Stephanie Hehlgans, Josef Pfeilschifter, Franz Rödel, Wolfgang Eberhardt
Increased abundance of the mRNA-binding protein human antigen R (HuR) is a characteristic feature of many cancers and frequently associated with a high grade malignancy and therapy resistance. HuR elicits a broad cell survival program mainly by stabilizing or increasing the translation of mRNAs coding for anti-apoptotic effector proteins. Conversally, we previously identified the pro-apoptotic caspase-2 as a novel HuR target which is mainly regulated at the level of translation. In this study, we investigated whether siRNA-mediated HuR knockdown interferes with cell survival and radiation sensitivity by monitoring apoptosis, DNA repair and three-dimensional (3D) clonogenic survival...
February 17, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28216017/usp7-inhibitor-p5091-inhibits-wnt-signaling-and-colorectal-tumor-growth
#2
An Tao, Gong Yaxiao, Li Xue, Kong Lingmei, Ma Pengcheng, Gong Liang, Zhu Huifang, Yu Chunlei, Liu Jianmei, Zhou Hongyu, Mao Bingyu, Li Yan
Aberrant activation of Wnt/β-catenin signaling is closely associated with the development of various human cancers, especially colorectal cancers (CRC). The ubiquitin proteasome system (UPS) is essential in the regulation of Wnt signaling and inhibitors targeting the UPS could have great potential in CRC therapy. Ubiquitin-specific protease 7 (USP7), a deubiquitinating enzyme, plays a significant role in neoplastic diseases due to its well-known function of regulating the MDM2-p53 complex. Inspired by our recent study identifying the positive role of USP7 in the Wnt signaling, we report here that USP7 is overexpressed in colorectal carcinoma cell lines and tissues, which is closely related with the poor prognosis...
February 16, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28214210/pathologic-features-of-colorectal-carcinomas-associated-with-crohn-s-disease-in-korean-population
#3
Jiyoon Kim, Ho-Su Lee, Sang Hyoung Park, Suk-Kyun Yang, Byong Duk Ye, Dong-Hoon Yang, Kyung-Jo Kim, Jeong-Sik Byeon, Yong Sik Yoon, Chang Sik Yu, Jihun Kim
BACKGROUND: Colorectal cancer (CRC) has been known to complicate Crohn's disease (CD). Several reports in Western population revealed that CRC in CD were characterized by much younger onset and equal distribution of tumors along the entire colon. However, clinicopathologic features of CD-associated CRC in Korean population have not been well documented yet. METHODS: Among 2968 Korean CD patients, 16 patients (0.54%) were found to develop CRC during follow up. We reviewed clinicopathologic features of the 16 CRC patients...
December 21, 2016: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28211922/applying-phasor-approach-analysis-of-multiphoton-flim-measurements-to-probe-the-metabolic-activity-of-three-dimensional-in-vitro-cell-culture-models
#4
Pirmin H Lakner, Michael G Monaghan, Yvonne Möller, Monilola A Olayioye, Katja Schenke-Layland
Fluorescence lifetime imaging microscopy (FLIM) can measure and discriminate endogenous fluorophores present in biological samples. This study seeks to identify FLIM as a suitable method to non-invasively detect a shift in cellular metabolic activity towards glycolysis or oxidative phosphorylation in 3D Caco-2 models of colorectal carcinoma. These models were treated with potassium cyanide or hydrogen peroxide as controls, and epidermal growth factor (EGF) as a physiologically-relevant influencer of cell metabolic behaviour...
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28208928/pulsatile-clavicular-swelling-as-the-sole-presentation-of-asymptomatic-renal-cell-carcinoma-with-an-isolated-metastasis-to-the-clavicle-a-case-report
#5
Ashwani Kumar, Nitish Arora, Paras Kumar Pandove, Garima Anand, Bharti Arora
Renal Cell Carcinoma (RCC) is notorious for its unpredictable dissemination patterns involving both lymphatic and haematogenous route without a clear-cut preponderance for any. Unlike other intra-abdominal malignancies like colorectal carcinoma, renal cell carcinoma is often known to metastasize to distant sites even after a confident and unsuspecting curative resection or often as the primary presentation constantly adding and agitating our presentation patterns for this sneaky tumour. Presented below is a case of such an unsuspecting female patient...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208862/correlation-of-p53-overexpression-with-the-clinicopathological-prognostic-factors-in-colorectal-adenocarcinoma
#6
Akshatha C, Vijaya Mysorekar, Arundhathi S, Arul P, Adithi Raj, Smitha Shetty
INTRODUCTION: Mutation in p53 gene and accumulation of p53 protein is a common genetic event in colorectal carcinomas. p53 mutation can be detected by various techniques such as DNA sequencing, polymerase chain reaction and immunohistochemistry (IHC). However, IHC is simple and is consistent with other techniques. AIM: To establish a correlation between overexpression of p53 with the clinical features, tumour histopathology and stage of Colorectal Carcinoma (CRC)...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208156/oncogenic-role-of-pdk4-in-human-colon-cancer-cells
#7
D Leclerc, D N T Pham, N Lévesque, M Truongcao, W D Foulkes, C Sapienza, R Rozen
BACKGROUND: Cancer cells maintain high rates of glycolysis. Pyruvate dehydrogenase kinases (PDK) contribute to this phenomenon, which favours apoptosis resistance and cellular transformation. We previously reported upregulation of PDK4 in normal mucosa of colorectal cancer (CRC) patients compared with controls and in preneoplastic intestine of our mouse model. Decreased methylation of four consecutive PDK4 CpGs was observed in normal mucosa of patients. Although other members of the PDK family have been investigated for transformation potential, PDK4 has not been extensively studied...
February 16, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28199067/human-epididymis-protein-4-immunostaining-of-malignant-ascites-differentiates-cancer-of-m%C3%A3-llerian-origin-from-gastrointestinal-cancer
#8
Anna Stiekema, Koen K Van de Vijver, Henk Boot, Annegien Broeks, Catharina M Korse, Willemien J van Driel, Gemma G Kenter, Christianne A R Lok
BACKGROUND: An accurate diagnosis of cancer of Müllerian origin is required before the initiation of treatment. An overlap in clinical presentation and cytological, histological, or imaging studies with other nongynecological tumors does occur. Therefore, immunocytochemistry markers are used to determine tumor origin. Human epididymis protein 4 (HE4) is overexpressed in tissue of epithelial ovarian cancer (EOC). It has shown to be a sensitive and specific serum marker for EOC and to be of value for the differentiation between EOC and ovarian metastases of gastrointestinal origin...
February 15, 2017: Cancer
https://www.readbyqxmd.com/read/28197686/pre-therapeutic-factors-for-predicting-survival-after-radioembolization-a-single-center-experience-in-389-patients
#9
K J Paprottka, F Schoeppe, M Ingrisch, J Rübenthaler, N N Sommer, E De Toni, H Ilhan, M Zacherl, A Todica, P M Paprottka
PURPOSE: To determine pre-therapeutic predictive factors for overall survival (OS) after yttrium (Y)-90 radioembolization (RE). METHODS: We retrospectively analyzed the pre-therapeutic characteristics (sex, age, tumor entity, hepatic tumor burden, extrahepatic disease [EHD] and liver function [with focus on bilirubin and cholinesterase level]) of 389 consecutive patients with various refractory liver-dominant tumors (hepatocellular carcinoma [HCC], cholangiocarcinoma [CCC], neuroendocrine tumor [NET], colorectal cancer [CRC] and metastatic breast cancer [MBC]), who received Y-90 radioembolization for predicting survival...
February 14, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28197382/s100a8-stroma-cells-predict-a-good-prognosis-and-inhibit-aggressiveness-in-colorectal-carcinoma
#10
Si Li, Fangying Xu, Hui Li, Jing Zhang, Anjing Zhong, Bin Huang, Maode Lai
Gene microarray and bioinformatic analysis showed that S100A8 was more abundant in the stroma surrounding tumor buddings (TBs) than in the stroma surrounding primary tumor cells in colorectal carcinomas. Here, S100A8(+) cells in 419 colorectal carcinoma samples were stained by immunohistochemistry and counted using Image-pro plus 6.0. TBs were also counted and biomarkers associated with the epithelial-mesenchymal transition and apoptosis were assessed by immunohistochemistry. We evaluated the association between S100A8(+) cells and clinico-pathological variables as well as survival...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28196074/clinical-applicability-and-cost-of-a-46-gene-panel-for-genomic-analysis-of-solid-tumours-retrospective-validation-and-prospective-audit-in-the-uk-national-health-service
#11
Angela Hamblin, Sarah Wordsworth, Jilles M Fermont, Suzanne Page, Kulvinder Kaur, Carme Camps, Pamela Kaisaki, Avinash Gupta, Denis Talbot, Mark Middleton, Shirley Henderson, Anthony Cutts, Dimitrios V Vavoulis, Nick Housby, Ian Tomlinson, Jenny C Taylor, Anna Schuh
BACKGROUND: Single gene tests to predict whether cancers respond to specific targeted therapies are performed increasingly often. Advances in sequencing technology, collectively referred to as next generation sequencing (NGS), mean the entire cancer genome or parts of it can now be sequenced at speed with increased depth and sensitivity. However, translation of NGS into routine cancer care has been slow. Healthcare stakeholders are unclear about the clinical utility of NGS and are concerned it could be an expensive addition to cancer diagnostics, rather than an affordable alternative to single gene testing...
February 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28195261/immunohistochemical-evaluation-of-mismatch-repair-proteins-in-colorectal-carcinoma-the-aifeg-gipad-proposal
#12
A Remo, M Fassan, G Lanza
Microsatellite instability (MSI) is a hypermutable phenotype that usually arises from either a germline mutation in components of the mismatch repair (MMR) machinery (i.e. hMLH1, MSH2, MSH6 and PMS2) in patients with Lynch syndrome (LS) or somatic hypermethylation of the hMLH1 promoter in sporadic carcinomas. In all colorectal cancers (CRC) is possible to identify the MMR deficiency through protein expression by immunoistochemistry (IHC). Recently, the predictive role of MMR deficiency in reduced chemotherapy benefit and the introduction of universal screening for Lynch syndrome suggest to include MMR testing into routine clinical practice...
September 2016: Pathologica
https://www.readbyqxmd.com/read/28194774/outcome-after-laparoscopic-and-open-resections-of-posterosuperior-segments-of-the-liver
#13
V Scuderi, L Barkhatov, R Montalti, F Ratti, F Cipriani, F Pardo, H Tranchart, I Dagher, F Rotellar, M Abu Hilal, B Edwin, M Vivarelli, L Aldrighetti, R I Troisi
BACKGROUND: Laparoscopic resection of posterosuperior (PS) segments of the liver is hindered by limited visualization and curvilinear resection planes. The aim of this study was to compare outcomes after open and laparoscopic liver resections of PS segments. METHODS: Patients who underwent minor open liver resection (OLR) and laparoscopic liver resection (LLR) between 2006 and 2014 were identified from the institutional databases of seven tertiary referral European hepatobiliary surgical units...
February 13, 2017: British Journal of Surgery
https://www.readbyqxmd.com/read/28194526/long-term-outcomes-after-treatment-for-t1-colorectal-carcinoma-a-multicenter-retrospective-cohort-study-of-hiroshima-gi-endoscopy-research-group
#14
Yuzuru Tamaru, Shiro Oka, Shinji Tanaka, Shinji Nagata, Yuko Hiraga, Toshio Kuwai, Akira Furudoi, Tadamasa Tamura, Masaki Kunihiro, Hideharu Okanobu, Koichi Nakadoi, Hiroyuki Kanao, Makoto Higashiyama, Koji Arihiro, Kazuya Kuraoka, Fumio Shimamoto, Kazuaki Chayama
BACKGROUND: We aimed to clarify the long-term outcomes of patients with T1 colorectal carcinoma (CRC) after endoscopic resection (ER) and surgical resection. METHODS: We examined T1 CRC patients treated during 1992-2008 and who had ≥5 years of follow-up. Patients who did not meet the curative criteria after ER according to the Japanese Society for Cancer of the Colon and Rectum (JSCCR) guidelines were defined as "non-endoscopically curable" and classified into three groups: ER alone (Group A: 121 patients), additional surgery after ER (Group B: 238 patients), and surgical resection alone (Group C: 342 patients)...
February 13, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28193644/tumour-thrombus-of-the-inferior-vena-cava-extending-into-the-right-atrium-in-the-setting-of-colon-cancer
#15
Daniel Meyers, Nancy A Nixon, Angela Franko, Danny Ng, Vincent C Tam
Tumour thrombus is seen in renal cell and hepatocellular carcinoma, but is rarely reported in colorectal cancer. A woman aged 46 years, with metastatic colonic adenocarcinoma, was found to have a large mass in the inferior vena cava (IVC) extending into the right atrium. Although this lesion was initially thought to be bland thrombus, imaging with contrast-enhanced CT scan and contrast-enhanced ultrasound supported the diagnosis of tumour thrombus. Despite the large size of the lesion, the patient was asymptomatic...
February 13, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28193047/accurate-direct-and-high-throughput-analyses-of-a-broad-spectrum-of-endogenously-generated-dna-base-modifications-with-isotope-dilution-two-dimensional-ultraperformance-liquid-chromatography-with-tandem-mass-spectrometry-possible-clinical-implication
#16
Daniel Gackowski, Marta Starczak, Ewelina Zarakowska, Martyna Modrzejewska, Anna Szpila, Zbigniew Banaszkiewicz, Ryszard Olinski
Our hereby presented methodology is suitable for reliable assessment of the most common unavoidable DNA modifications which arise as a product of fundamental metabolic processes. 8-Oxoguanine, one of the oxidatively modified DNA bases, is a typical biomarker of oxidative stress. A noncanonical base, uracil, may be also present in small quantities in DNA. A set of ten-eleven translocation (TET) proteins are involved in oxidation of 5-methylcytosine to 5-hydroxymethylcytosine which can be further oxidized to 5-formylcytosine and 5-carboxycytosine...
December 20, 2016: Analytical Chemistry
https://www.readbyqxmd.com/read/28192653/double-network-structured-graphene-oxide-containing-nanogels-as-photothermal-agents-for-the-treatment-of-colorectal-cancer
#17
Calogero Fiorica, Nicolò Mauro, Giovanna Pitarresi, Cinzia Scialabba, Fabio S Palumbo, Gaetano Giammona
Here, we reported the production of hyaluronic acid/polyaspartamide-based double-network nanogels for the potential treatment of colorectal carcinoma. Graphene oxide, thanks to the huge aromatic surface area, allows to easily load high amount of irinotecan (33.0% w/w) and confers to the system hyperthermic properties when irradiated with a near-infrared (NIR) laser beam. We demonstrate that the release of antitumor drug is influenced both by the pH of the external medium and the NIR irradiation process. In vitro biological studies, conducted on human colon cancer cells (HCT 116), revealed that nanogels are uptaken by the cancer cells and, in the presence of the antitumor drug, can produce a synergistic hyperthermic/cytotoxic effect...
February 20, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28192155/modality-of-tumor-endothelial-vegfr2-silencing-mediated-improvement-in-intratumoral-distribution-of-lipid-nanoparticles
#18
Shoshiro Yamamoto, Akari Kato, Yu Sakurai, Tomoya Hada, Hideyoshi Harashima
The vascular endothelial growth factor (VEGF)-mediated enhancement in vascular permeability is considered to be a major factor in tumor-targeting delivery via the enhanced permeability and retention (EPR) effect. We previously reported that the silencing of the endothelial VEGF receptor (VEGFR2) by a liposomal siRNA system (RGD-MEND) resulted in an enhanced intratumoral distribution of polyethylene glycol (PEG)-modified liposomes (LPs) in a renal cell carcinoma, a type of hypervascularized cancer, although the inhibition of VEGF signaling would be expected to decrease the permeability of the tumor vasculature...
February 10, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28191373/capecitabine-associated-loss-of-fingerprints-report-of-capecitabine-induced-adermatoglyphia-in-two-women-with-breast-cancer-and-review-of-acquired-dermatoglyphic-absence-in-oncology-patients-treated-with-capecitabine
#19
Philip R Cohen
Capecitabine, an oral 5-fluorouracil prodrug, is currently used in the treatment of metastatic colorectal carcinoma and breast cancer. Fingerprints, also referred to as dermatoglyphics and characterized by the pattern of ridges and furrows on the fingertips, are used for identification by government agencies and personal electronic devices. Two women with breast cancer who were treated with capecitabine and developed drug-associated loss of their fingerprints are described. PubMed was used to search the following terms separately and in combination: absence, adermatoglyphia, breast, cancer, capecitabine, carcinoma, colon, colorectal, dermatoglyphics, fingerprint, fluorouracil, foot, hand, loss, malignancy, nasopharyngeal, oncology, reaction, rectal, skin, syndrome, tumor, and xeloda...
January 9, 2017: Curēus
https://www.readbyqxmd.com/read/28188963/high-risk-epithelial-ovarian-cancer-patients-for-hereditary-ovarian-cancer
#20
Seksit Chirasophon, Tarinee Manchana, Chinachote Teerapakpinyo
AIM: Risk assessment to identify patients at risk for hereditary ovarian cancer is important. The objectives of this study were to evaluate the frequency of high-risk epithelial ovarian cancer (EOC) patients and the frequency of germline mutation in these patients. METHODS: A total of 335 patients with histologically confirmed non-mucinous EOC were included. High-risk patients were defined as patients who had: (i) significant family history of breast/ovarian/colorectal/endometrial cancers; (ii) synchronous breast/endometrial/colorectal cancer; or (iii) high-grade serous carcinoma...
February 11, 2017: Journal of Obstetrics and Gynaecology Research
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