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https://www.readbyqxmd.com/read/29241109/pharmacokinetic-studies-of-naproxen-amides-of-some-amino-acid-esters-with-promising-colorectal-cancer-chemopreventive-activity
#1
Tarek Aboul-Fadl, Soliman S Al-Hamad, Ehab A Fouad
Naproxen (nap) is belonging to Non-steriodal anti-inflammatory drugs (NSAIDs) group of drugs that characterized by their free carboxylic group. The therapeutic activity of nap is usually accompanied by GI untoward side effects. Recently synthesized naproxen amides of some amino acid esters prodrugs to mask the free carboxylic group were reported. Those prodrugs showed a promising colorectal cancer chemopreventive activity. The current study aims to investigate the fate and hydrolysis of the prodrugs kinetically in different pH conditions, simulated gastric and intestinal fluids with pHs of 1...
December 2, 2017: Bioorganic Chemistry
https://www.readbyqxmd.com/read/29240888/barriers-to-contacting-general-practice-with-alarm-symptoms-of-colorectal-cancer-a-population-based-study
#2
Dorte E Jarbøl, Sanne Rasmussen, Rikke P Svendsen, Kirubakaran Balasubramaniam, Peter F Haastrup, Maja S Petersen, Mojib Fallah, Sandra Elnegaard
Background: A prerequisite for general practitioners (GPs) being able to refer patients with cancer alarm symptoms for further investigations is that individuals present to the GP. Knowledge of barriers to help-seeking is, however, sparse. Objectives. The aim of this study was to analyse associations between the experience of recent-onset alarm symptom of colorectal cancer and four different barriers towards GP contact. Methods: A nationwide web-based cohort survey was conducted in 100000 individuals aged 20 years or above, randomly selected from the Danish Civil Registration System...
December 12, 2017: Family Practice
https://www.readbyqxmd.com/read/29240449/mir-19-5p-enhances-tumorigenesis-in-human-colorectal-cancer-cells-by-targeting-tspyl5
#3
Chao Huang, Hesheng Luo
The cancer suppressor gene, testis-specific protein Y-encoded-like 5 (TSPYL5), has been implicated in various cancers, including colorectal cancer (CRC). In this study, we investigated the role of TSPYL5 in the development of CRC in vitro. First, we used bioinformatics to predict the binding target of TSPYL5, and found that the microRNA, miR-19-5p, bound to the 3' untranslated region (UTR) of TSPYL5. This interaction was further validated by the dual-luciferase assay. Second, we found that overexpressed TSPYL5 enhanced apoptosis in HT29 cells and reduced cell proliferation, reduced cell migration/invasion, and most of the cells accumulated in the G0/G1 phase of the cell cycle...
December 14, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/29240249/exosomal-mir-6803-5p-as-potential-diagnostic-and-prognostic-marker-in-colorectal-cancer
#4
Shushan Yan, Ye Jiang, Caihong Liang, Chengwen Jin, Quanhong Duan, Donghua Xu, Lu Yang, Xiaoyu Zhang, Bin Ren, Peng Jin
Accumulating data have suggested exosome-delivered microRNAs (miRNAs) play critical role in carcinogenesis and cancer progression. However, little is known about the influence of exosomal miR-6803-5p on the development and prognosis of colorectal cancer (CRC). Levels of serum exosomal miR-6803-5p were determined by microarray analysis and verified by quantitative real-time PCR (qRT-PCR). Outcomes of overall survival (OS) and disease-free survival (DFS) of CRC patients were estimated by Kaplan-Meier analysis...
December 14, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29240246/hyperthermia-enhances-radiosensitivity-of-colorectal-cancer-cells-through-ros-inducing-autophagic-cell-death
#5
Ming-Chen Ba, Hui Long, Shuai Wang, Yin-Bing Wu, Bo-Huo Zhang, Zhao-Fei Yan, Fei-Hong Yu, Shu-Zhong Cui
BACKGROUND: Hyperthermia (HT) enhances the anti-cancer effects of radiotherapy (RT), but the precise biochemical mechanisms involved are unclear. This study was aim to investigate if mild HT sensitizes colorectal cancer cells to RT through reactive oxygen species (ROS)-inducing autophagic cell death in a mice model of HCT116 human colorectal cancer. METHODS: HCT116 mice model were randomly divided into five groups: mock group, hyperthermia group (HT), radiotherapy group (RT), HT + RT group, and HT + RT +N-acetyl L-cysteine (NAC) group (HT + CT + NAC)...
December 14, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29239679/primary-care-variability-in-patients-at-higher-risk-for-colorectal-cancer-evaluation-of-screening-and-preventive-care-practices
#6
John Peabody, Juan-Sebastien Salvidar, Eric Swagel, Steven Fugaro, David Paculdo, Mary Tran
OBJECTIVE: Sub-optimal colorectal cancer (CRC) evaluations have been attributed to both physician and patient factors. The primary objective of this study was to evaluate physician practice variation in patients with a higher risk of CRC. We wanted to identify the physician characteristics and the types of patient that were associated with missed screening opportunities; we also explored whether screening for CRC served as a proxy for better preventive care practices. METHODS: 213 board-certified family and internal medicine physicians participated in the study, conducted between September and December 2016...
December 14, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/29239195/-immunotherapy-of-colorectal-and-anal-carcinoma
#7
J Tomášek, I Kiss
BACKGROUND: The lower part of the digestive tract includes the large intestine, rectum and anus. Treatment algorithms of cancers in these localities have significant differences in both early and advanced stages. The vast majority of metastatic cases are incurable. A few years ago, it was generally accepted that gastrointestinal tumors are poorly immunogenic and modern immunotherapy would not work in gastrointestinal cancers. The breakthrough has become the recognition of the mismatch repair system (MMR) that affects the microsatellite instability (MSI) and its role in the development of colorectal carcinoma (CRC)...
2017: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
https://www.readbyqxmd.com/read/29238914/clinical-and-genetic-implications-of-dna-mismatch-repair-deficiency-in-biliary-tract-cancers-associated-with-lynch-syndrome
#8
Jordan M Cloyd, Yun Shin Chun, Naruhiko Ikoma, Jean Nicolas Vauthey, Tlhomas A Aloia, Amanda Cuddy, Miguel A Rodriguez-Bigas, Y Nancy You
PURPOSE: Patients with Lynch syndrome (LS) have a significantly elevated lifetime risk of developing biliary tract cancers (BTCs) compared to the general population. However, few studies have characterized the clinical characteristics, genetic features, or long-term outcomes of mismatch-repair deficient (dMMR) cholangiocarcinomas associated with LS. METHODS: A retrospective review of a prospectively maintained Familial High-Risk GI Cancer Clinic database identified all patients with BTCs evaluated from 2006 to 2016 who carried germline mutations in MLH1, MSH2, MSH6, or PMS2...
December 14, 2017: Journal of Gastrointestinal Cancer
https://www.readbyqxmd.com/read/29238715/chemopreventive-potential-of-2-3-5-4-tetrahydroxystilbene-2-o-%C3%AE-d-glucoside-on-the-formation-of-aberrant-crypt-foci-in-azoxymethane-induced-colorectal-cancer-in-rats
#9
Chien-Liang Lin, Jiiang-Huei Jeng, Chih-Chung Wu, Shu-Ling Hsieh, Guan-Cheng Huang, Wan Leung, Chining-Ting Lee, Chung-Yi Chen, Chien-Hsing Lee
2,3,5,4'-Tetrahydroxystilbene-2-O-β-D-glucoside (THSG) has been shown to have antioxidative and anti-inflammatory effects. Oxidative and inflammatory reactions are related to the development of colorectal carcinoma (CRC). In the present study, we characterized the preventive activities of THSG on colon carcinogenesis using the azoxymethane- (AOM-) mediated rat colon carcinogenesis model. F344 male rats were randomly divided into 5 groups (untreated and AOM model rats treated with or without THSG at 30, 150, or 250 mg/kg) after which the numbers of aberrant crypt foci (ACF) were assessed in the colon tissues of all rats...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29238466/antimalarial-and-cytotoxic-activities-of-roots-and-fruits-fractions-of-astrodaucus-persicus-extract
#10
Saied Goodarzi, Mehdi Nateghpour, Parina Asgharian, Abbas Hadjiakhoondi, Narguess Yassa, Saeed Tavakoli, Jalal Mirzaei, Leila Farivar, Afsaneh Motevalli Haghi, Zahra Tofighi
Objectives: Astrodaucus persicus (Apiaceae) is one of the two species of this genus which grows in different parts of Iran. Roots of this plant were rich in benzodioxoles and used as food additive or salad in Iran and near countries. The aim of present study was evaluation of antimalarial and cytotoxic effects of different fractions of A. persicus fruits and roots extracts. Materials and Methods: Ripe fruits and roots of A. persicus were extracted and fractionated by hexane, chloroform, ethyl acetate and methanol, separately...
December 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29238436/idiopathic-isolated-colonic-varices-an-extremely-rare-condition
#11
Tagore Sunkara, Megan E Caughey, Andrea Culliford, Vinaya Gaduputi
Colonic varices are an incredibly rare phenomenon to begin with; however, they are even more unusual when isolated and occurring in the absence of common comorbidities, like portal hypertension or portal vein thrombosis. We present a case of a 71-year-old female, who was asymptomatic and referred to gastroenterology for a routine colorectal cancer screening. The patient was ultimately found to have this anomalous condition when colonic varices were first identified on colonoscopy. Since these varices did not result from any obvious etiology, they were determined to be idiopathic colonic varices, an especially unusual presentation...
January 2018: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/29238109/present-and-future-roles-of-fdg-pet-ct-imaging-in-the-management-of-gastrointestinal-cancer-an-update
#12
REVIEW
Kazuhiro Kitajima, Masatoyo Nakajo, Hayato Kaida, Ryogo Minamimoto, Kenji Hirata, Masakatsu Tsurusaki, Hiroshi Doi, Yoshiko Ueno, Keitaro Sofue, Yukihisa Tamaki, Koichiro Yamakado
Positron emission tomography/computed tomography (PET/CT) integrated with 2-[18F]fluoro-2-deoxy-D-glucose (FDG) is a useful tool for acquisition of both glucose metabolism and anatomic imaging data, as only a single device and one diagnostic session is required, thus opening a new field in clinical oncologic imaging. FDG-PET/CT has been successfully used for initial staging, restaging, assessment of early treatment response, evaluation of metastatic disease response, and prognostication of intestinal cancer as well as various malignant tumors...
November 2017: Nagoya Journal of Medical Science
https://www.readbyqxmd.com/read/29238068/microrna-105-is-involved-in-tnf-%C3%AE-related-tumor-microenvironment-enhanced-colorectal-cancer-progression
#13
Zetao Shen, Rui Zhou, Chen Liu, Yaofeng Wang, Wanqi Zhan, Ziyun Shao, Jian Liu, Feifei Zhang, Lijun Xu, Xinying Zhou, Lu Qi, Feng Bo, Yanqing Ding, Liang Zhao
TNF-α is a central proinflammatory cytokine contributing to malignant tumor progression in tumor microenvironment. In this study, we found the upregulation of miR-105 in colorectal cancer was associated with aggressive phenotype, and the enhanced expression of miR-105 was required for TNF-α-induced epithelial-mesenchymal transition (EMT). The expression of miR-105 was remarkably stimulated by TNF-α in a time-dependent manner using real-time qPCR analysis. Inhibition of miR-105 remarkably weakened the aggressive effects of TNF-α through preventing the activation of NF-κB signaling and the initiation of EMT...
December 13, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/29237953/quantitative-determination-of-tumor-platinum-concentration-of-patients-with-advanced-breast-lung-prostate-or-colorectal-cancers-undergone-platinum-based-chemotherapy
#14
Hesameddin Mostaghimi, Ali Reza Mehdizadeh, Mohammad Jahanbakhsh, Amir Reza Dehghanian, Ramin Askari
CONTEXT: Previous studies have reported direct relationship between tumor reduction and its platinum concentration following platinum-based (Pt-based) chemotherapy. However, quantitative data of tumor platinum concentration have not yet been reported for the most common cancers. AIMS: Determination of tumor platinum concentration of breast, lung, prostate, and colorectal cancers after Pt-based chemotherapy; and evaluation of the influence of chemo drug type, chemotherapy regimen, and time lapse from last chemotherapy on tumor platinum concentration...
October 2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/29237919/efficacy-and-safety-of-bevacizumab-in-elderly-patients-with-advanced-colorectal-cancer-a-meta-analysis
#15
Xiuxing Chen, Yanfeng Chen, Xiuyu Cai, Dongsheng Zhang, Lei Fan, Huijuan Qiu, Bei Zhang, Guifang Guo
AIMS: Bevacizumab plus chemotherapy (CT) has been the standard treatment for advanced colorectal cancer (ACRC) in the last decade. However, whether geriatric patients treated with this combination achieved more benefits or suffered severer toxicities than CT alone remained controversial. This meta-analysis was aimed to provide more convincing evidence. SUBJECTS AND METHODS: Randomized control trials (RCTs) and retrospective comparative studies on the comparison between bevacizumab plus CT and CT for geriatric ACRC patients were retrieved in PubMed, Web of Science, EMBASE, and Ovid until June 2016...
2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/29237421/first-decade-patient-with-colorectal-cancer-carrying-both-germline-and-somatic-mutations-in-apc-gene
#16
Yung-Sung Yeh, Yu-Tang Chang, Cheng-Jen Ma, Ching-Wen Huang, Hsiang-Lin Tsai, Yi-Ting Chen, Jaw-Yuan Wang
BACKGROUND: Colorectal carcinoma (CRC) is one of the most common causes of cancer-related deaths. The mean age of patients with CRC ranges from 49 to 60 years. Pediatric CRC is unusual, which often escapes early diagnosis because of a lack of awareness of its occurrence in children. The association between the mutation of APC and the occurrence of CRC in the first decade of life remains unknown. CASE PRESENTATION: We report a 10-year-old child with CRC; he was diagnosed with stage IIIB advanced transverse colon cancer without distal metastases...
December 14, 2017: BMC Cancer
https://www.readbyqxmd.com/read/29237416/a-network-based-predictive-gene-expression-signature-for-adjuvant-chemotherapy-benefit-in-stage-ii-colorectal-cancer
#17
Bangrong Cao, Liping Luo, Lin Feng, Shiqi Ma, Tingqing Chen, Yuan Ren, Xiao Zha, Shujun Cheng, Kaitai Zhang, Changmin Chen
BACKGROUND: The clinical benefit of adjuvant chemotherapy for stage II colorectal cancer (CRC) is controversial. This study aimed to explore novel gene signature to predict outcome benefit of postoperative 5-Fu-based therapy in stage II CRC. METHODS: Gene-expression profiles of stage II CRCs from two datasets with 5-Fu-based adjuvant chemotherapy (training dataset, n = 212; validation dataset, n = 85) were analyzed to identify the indicator. A systemic approach by integrating gene-expression and protein-protein interaction (PPI) network was implemented to develop the predictive signature...
December 13, 2017: BMC Cancer
https://www.readbyqxmd.com/read/29237415/family-history-of-prostate-and-colorectal-cancer-and-risk-of-colorectal-cancer-in-the-women-s-health-initiative
#18
Jennifer L Beebe-Dimmer, Cecilia Yee, Electra Paskett, Ann G Schwartz, Dorothy Lane, Nynikka R A Palmer, Cathryn H Bock, Rami Nassir, Michael S Simon
BACKGROUND: Evidence suggests that risk of colorectal and prostate cancer is increased among those with a family history of the same disease, particularly among first-degree relatives. However, the aggregation of colorectal and prostate cancer within families has not been well investigated. METHODS: Analyses were conducted among participants of the Women's Health Initiative (WHI) observational cohort, free of cancer at the baseline examination. Subjects were followed for colorectal cancer through August 31st, 2009...
December 13, 2017: BMC Cancer
https://www.readbyqxmd.com/read/29237405/prevalence-and-characteristics-of-hereditary-non-polyposis-colorectal-cancer-hnpcc-syndrome-in-immigrant-asian-colorectal-cancer-patients
#19
Jasmine Lee, Yin-Yi Xiao, Yan Yu Sun, Jasminka Balderacchi, Bradley Clark, Jatin Desani, Vivek Kumar, Angela Saverimuthu, Khin Than Win, Yiwu Huang, Yiqing Xu
BACKGROUND: The prevalence of Hereditary Non-Polyposis Colorectal Cancer (HNPCC) is 2 to 5% in the Caucasian population. HNPCC is caused by genomic mutations in DNA mismatch repair genes (MMR), namely MLH1, MSH2, MSH6, PMS2, and EPCAM. A non-hereditary, acquired process of hypermethylation of the MLH1 promoter can also lead to silencing of MLH1 protein expression. Diagnosis of HNPCC in patients with colorectal and other related cancers is important in the clinical treatment and surveillance of related cancers...
December 13, 2017: BMC Cancer
https://www.readbyqxmd.com/read/29237383/the-effect-of-flubendazole-on-adhesion-and-migration-in-sw480-and-sw620-colon-cancer-cells
#20
Veronika Hanusova, Lenka Skalova, Vera Kralova, Petra Matouskovs
Colon cancer is the most common type of gastrointestinal cancer. Despite advances during the last two decades, the efficacy of colorectal cancer treatment is still insufficient and new anticancer agents are necessary. In our study, colon cancer cells derived from a primary tumor (SW480) and lymph node metastasis (SW620) from the same patient were used and compared. The effect of FLU on cell adhesion and migration was monitored using the x-CELLigence Real-Time Cell Analysis system. Expressions of molecules involved in adhesion and migration were analyzed using RT-PCR and western blot...
December 13, 2017: Anti-cancer Agents in Medicinal Chemistry
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