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colorectal cancer and early detection

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https://www.readbyqxmd.com/read/29786848/annual-report-to-the-nation-on-the-status-of-cancer-part-i-national-cancer-statistics
#1
Kathleen A Cronin, Andrew J Lake, Susan Scott, Recinda L Sherman, Anne-Michelle Noone, Nadia Howlader, S Jane Henley, Robert N Anderson, Albert U Firth, Jiemin Ma, Betsy A Kohler, Ahmedin Jemal
BACKGROUND: The American Cancer Society (ACS), the Centers for Disease Control and Prevention (CDC), the National Cancer Institute (NCI), and the North American Association of Central Cancer Registries (NAACCR) collaborate to provide annual updates on cancer occurrence and trends in the United States. METHODS: Incidence data were obtained from the CDC-funded and NCI-funded population-based cancer registry programs and compiled by NAACCR. Data on cancer deaths were obtained from the National Center for Health Statistics National Vital Statistics System...
May 22, 2018: Cancer
https://www.readbyqxmd.com/read/29785620/how-asymptomatic-are-early-cancer-patients-of-five-organs-based-on-registry-data-in-japan
#2
Narue Nakabayashi, Masahiro Hirose, Ritsuro Suzuki, Junji Suzumiya, Mikio Igawa
BACKGROUND: One reason for the low cancer screening rate in Japan is that people are not concerned about cancer if they do not have symptoms. METHODS: The authors retrospectively analyzed 18,405 cancer patients using hospital-based cancer registry data collected between 2007 and 2013 at the 13 hospitals of Shimane Prefecture, Japan. The symptomatic rates of five cancers (stomach, colorectal, lung, breast, and cervix) at each stage and the time of early diagnosis were investigated...
May 21, 2018: International Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29783979/lynch-syndrome-associated-endometrial-carcinoma-with-mlh1-germline-mutation-and-mlh1-promoter-hypermethylation-a-case-report-and-literature-review
#3
Takanori Yokoyama, Kazuhiro Takehara, Nao Sugimoto, Keika Kaneko, Etsuko Fujimoto, Mika Okazawa-Sakai, Shinichi Okame, Yuko Shiroyama, Takashi Yokoyama, Norihiro Teramoto, Shozo Ohsumi, Shinya Saito, Kazuho Imai, Kokichi Sugano
BACKGROUND: Lynch syndrome is an autosomal dominant inherited disease caused by germline mutations in mismatch repair genes. Analysis for microsatellite instability (MSI) and immunohistochemistry (IHC) of protein expressions of disease-associated genes is used to screen for Lynch syndrome in endometrial cancer patients. When losses of both MLH1 and PMS2 proteins are observed by IHC, MLH1 promoter methylation analysis is conducted to distinguish Lynch syndrome-associated endometrial cancer from sporadic cancer...
May 21, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29781328/characteristics-of-right-sided-colonic-neoplasia-and-colonoscopy-barriers-limiting-their-early-detection-and-prognosis-a-review-of-the-literature
#4
Wolfgang Fischbach, Rory Elsome, Bharat Amlani
Colonoscopy provides less protection from colorectal cancer in the right colon than the left. Areas Covered: This review examines patient outcomes and colonoscopy success rates to identify factors that limit the protective effect of colonoscopy in the right colon. The MEDLINE and Embase databases were searched for literature from 2000 onwards, on the long-term outcomes and differences in screening practice between the right and left colon. In total, 12 systematic reviews (including nine meta-analyses) and 44 primary data records were included...
May 21, 2018: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29780602/screening-for-colorectal-cancer-in-tianhe-guangzhou-results-of-combining-fecal-immunochemical-tests-and-risk-factors-for-selecting-patients-requiring-colonoscopy
#5
Yi Liao, Senmao Li, Chunyu Chen, Xuan He, Feng Lin, Jianping Wang, Zuli Yang, Ping Lan
Objective: To explore the performance of a protocol combining fecal immunochemical test (FIT) and a high-risk factor questionnaire (HRFQ) for selecting patients requiring colonoscopy as part of a population-based colorectal cancer (CRC) screening program in China. Methods: From 2015 to 2016, we conducted a CRC screening program for all residents aged 45 years or older in Tianhe District, Guangzhou City, China. Participants underwent an FIT and received an HRFQ as part of primary screening...
May 2018: Gastroenterology Report
https://www.readbyqxmd.com/read/29780595/early-detection-of-ulcerative-colitis-associated-colorectal-cancer
#6
REVIEW
Yu Zhen, Chengxin Luo, Hu Zhang
Colitis-associated colorectal cancer (CACC) is one of the most serious complications of inflammatory bowel disease (IBD), particularly in ulcerative colitis (UC); it accounts for approximately 15% of all-causes mortality among IBD patients. Because CACC shows a worse prognosis and higher mortality than sporadic colorectal cancer, early detection is critical. Colonoscopy is primarily recommended for surveillance and several advanced endoscopic imaging techniques are emerging. In addition, recent studies have reported on attempts to develop clinically relevant biomarkers for surveillance using various biosamples, which may become high-performance screening tools in the future, so the best approach and technique for cancer surveillance in long-standing UC patients remain under debate...
May 2018: Gastroenterology Report
https://www.readbyqxmd.com/read/29780253/a-5-serum-mirna-panel-for-the-early-detection-of-colorectal-cancer
#7
Shaohua Guo, Jiajin Zhang, Baishi Wang, Bingdong Zhang, Xuning Wang, Liang Huang, Hongyi Liu, Baoqing Jia
Objective: The study aimed to screen microRNAs (miRNAs) that can be used for the early detection of colorectal cancer (CRC) based on differential expression of miRNA in serum. Materials and methods: A three-stage study was designed with a total of 217 CRCs, 168 colorectal adenomas (CRAs), and 190 healthy controls (HCs). A quantitative reverse transcription polymerase chain reaction was performed in three stages. We screened 528 miRNA expression profiles in the sera of 40 patients (CRC n=20, CRA n=10, and HC n=10) for candidate miRNAs, then 210 serum samples (CRC n=90, CRA n=60, and HC n=60) were used for screening of candidate miRNAs...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29779016/integrated-analysis-of-colorectal-cancer-microrna-datasets-identification-of-micrornas-associated-with-tumor-development
#8
Luca Falzone, Letizia Scola, Antonino Zanghì, Antonio Biondi, Antonio Di Cataldo, Massimo Libra, Saverio Candido
Colorectal cancer (CRC) is one of the leading cause of cancer death worldwide. Currently, no effective early diagnostic biomarkers are available for colorectal carcinoma. Therefore, there is a need to discover new molecules able to identify pre-cancerous lesions. Recently, microRNAs (miRNAs) have been associated with the onset of specific pathologies, thus the identification of miRNAs associated to colorectal cancer may be used to detect this pathology at early stages. On these bases, the expression levels of miRNAs were analyzed to compare the miRNAs expression levels of colorectal cancer samples and normal tissues in several miRNA datasets...
May 18, 2018: Aging
https://www.readbyqxmd.com/read/29760052/spatial-mutation-patterns-as-markers-of-early-colorectal-tumor-cell-mobility
#9
Marc D Ryser, Byung-Hoon Min, Kimberly D Siegmund, Darryl Shibata
A growing body of evidence suggests that a subset of human cancers grows as single clonal expansions. In such a nearly neutral evolution scenario, it is possible to infer the early ancestral tree of a full-grown tumor. We hypothesized that early tree reconstruction can provide insights into the mobility phenotypes of tumor cells during their first few cell divisions. We explored this hypothesis by means of a computational multiscale model of tumor expansion incorporating the glandular structure of colorectal tumors...
May 14, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29755432/murine-endogenous-retroviruses-are-detectable-in-patient-derived-xenografts-but-not-in-patient-individual-cell-lines-of-human-colorectal-cancer
#10
Stephanie Bock, Christina S Mullins, Ernst Klar, Philippe Pérot, Claudia Maletzki, Michael Linnebacher
Endogenous retroviruses are remnants of retroviral infections. In contrast to their human counterparts, murine endogenous retroviruses (mERV) still can synthesize infectious particles and retrotranspose. Xenotransplanted human cells have occasionally been described to be mERV infected. With genetic engineered mice and patient-derived xenografts (PDXs) on the rise as eminent research tools, we here systematically investigated, if different tumor models harbor mERV infections. Relevant mERV candidates were first preselected by next generation sequencing (NGS) analysis of spontaneous lymphomas triggered by colorectal cancer (CRC) PDX tissue...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29743854/microsatellite-instability-in-colorectal-cancer
#11
REVIEW
Jafar Nouri Nojadeh, Shahin Behrouz Sharif, Ebrahim Sakhinia
Colorectal cancer (CRC) is a heterogeneous disease that is caused by the interaction of genetic and environmental factors. Although it is one of the most common cancers worldwide, CRC would be one of the most curable cancers if it is detected in the early stages. Molecular changes that occur in colorectal cancer may be categorized into three main groups: 1) Chromosomal Instability (CIN), 2) Microsatellite Instability (MSI), and 3) CpG Island Methylator phenotype (CIMP). Microsatellites, also known as Short Tandem Repeats (STRs) are small (1-6 base pairs) repeating stretches of DNA scattered throughout the entire genome and account for approximately 3 % of the human genome...
2018: EXCLI journal
https://www.readbyqxmd.com/read/29740483/reduced-mir-433-expression-is-associated-with-advanced-stages-and-early-relapse-of-colorectal-cancer-and-restored-mir-433-expression-suppresses-the-migration-invasion-and-proliferation-of-tumor-cells-in-vitro-and-in-nude-mice
#12
Jian Zhang, Lei Zhang, Tong Zhang, Xin-Min Dong, Yu Zhu, Long-Hua Chen
The expression of microRNA (miR-433) is altered in various types of human cancer. The present study analyzed the prognostic and biological value of miR-433 expression in colorectal cancer using reverse transcription-quantitative polymerase chain reaction in 125 colorectal tissue specimens (including a test cohort of 40 cases of paired colorectal cancer and adjacent normal mucosae and a confirmation cohort of 85 cases of stage I-III colorectal cancer). In vitro and nude mouse xenograft experiments were subsequently used to assess the effects of miR-433 expression on the regulation of colorectal cancer cell proliferation, adhesion, migration, and invasion...
May 2018: Oncology Letters
https://www.readbyqxmd.com/read/29739748/circulating-exosomal-mir-27a-and-mir-130a-act-as-novel-diagnostic-and-prognostic-biomarkers-of-colorectal-cancer
#13
Shukui Wang, Xiangxiang Liu, Bei Pan, Li Sun, Xiaoxiang Chen, Kaixuan Zeng, Xiuxiu Hu, Tao Xu, Mu Xu
BACKGROUND: Colorectal cancer (CRC) is one of the most common cancers worldwide usually with poor prognosis due to the advanced stage when diagnosed. This study aimed to investigate whether specific circulating exosomal miRNAs could act as biomarkers for early diagnosis of CRC. METHODS: A total of 369 peripheral blood samples were included in this study. In the discovery phase, circulating exosomal miR-27a and miR-130a were selected after synthetical analysis of two GEO datasets and TCGA database...
May 8, 2018: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/29739047/identification-of-differentially-expressed-micrornas-involved-in-the-pathogenesis-of-colorectal-cancer
#14
Haiyi Feng, Ming Xu, Yunpeng Zhang, Bo Han, Jue Wang, Peng Sun
BACKGROUND: The ability to diagnose or treat colorectal cancer (CRC) at an early stage could lead to the improved survival. The purpose of this study was to identify differentially expressed microRNAs (miRNAs) involved in the pathogenesis of CRC. These miRNAs may serve as the biomarkers or potential therapeutic targets for CRC early detection or treatment. METHODS: The GSE39814 miRNA expression profile dataset was downloaded from the NCBI GEO database. MiRNAs were extracted from the exosome fractions of three normal fetal colon-derived cells and HCT116 and SW480 cell lines...
May 1, 2018: Clinical Laboratory
https://www.readbyqxmd.com/read/29737552/competing-endogenous-rna-network-crosstalk-reveals-novel-molecular-markers-in-colorectal-cancer
#15
Nehal Samir, Marwa Matboli, Hanaa El-Tayeb, Ahmed El-Tawdi, Mohmed K Hassan, Sherif El-Khamisy, Hesham A E El-Akkad, Mohamed G Ramadan, Tarek N Al-Belkini, Farid El-Asmar
The competing endogenous RNA networks play a pivotal role in cancer diagnosis and progression. Novel properstrategies for early detection of colorectal cancer (CRC) are strongly needed. We investigated a novel CRC-specific RNA-based integrated competing endogenous network composed of lethal3 malignant brain tumor like1 (L3MBTL1) gene, long non-coding intergenic RNA- (lncRNA RP11-909B2.1) and homo sapiens microRNA-595 (hsa-miRNA-595) using in silico data analysis. RT-qPCR-based validation of the network was achieved in serum of 70 patients with CRC, 40 patients with benign colorectal neoplasm, and 20 healthy controls...
May 8, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29731918/mir-211-regulates-the-expression-of-rrm2-in-tumoral-metastasis-and-recurrence-in-colorectal-cancer-patients-with-a-k-ras-gene-mutation
#16
Chiu-Chun Chang, Chun-Che Lin, Chia-Hung Wang, Chi-Chou Huang, Tao-Wei Ke, Po-Li Wei, Ken-Tu Yeh, Kai-Cheng Hsu, Nan-Yung Hsu, Ya-Wen Cheng
Colorectal cancer (CRC) ranks as the third-leading cause of cancer-associated mortalities in Taiwan. The expression of ribonucleotide reductase M2 ( RRM2 ) and p53R2 is associated with tumoral malignancy and progression in several types of cancer. The aim of the present study was to determine the association of p53R2/RRM2 with the upstream expression of microRNA ( miR)-211 and the association of expression levels of p53, APC and k-ras with clinical outcomes in patients with CRC. The study consisted of 192 tumor tissue samples obtained from patients with CRC...
May 2018: Oncology Letters
https://www.readbyqxmd.com/read/29730903/analysis-of-syndecan-2-methylation-in-bowel-lavage-fluid-for-detection-of-colorectal-neoplasm
#17
Young Sook Park, Dong Shin Kim, Sang Woo Cho, Jong Won Park, Sang Jin Jeon, Tae Ju Moon, Seong Hwan Kim, Byoung Kwan Son, TaeJeong Oh, Sungwhan An, Jeong HwanKim, Jeong Don Chae
Background/Aims: Syndecan-2 ( SDC2 ) methylation was previously reported as a sensitive serologic biomarker for the early detection of colorectal cancer (CRC). The purpose of this study was to investigate whether SDC2 methylation is detectable in precancerous lesions and to determine the feasibility of using SDC2 methylation for the detection of CRC and precancerous lesions in bowel lavage fluid (BLF). Methods: A total of 190 BLF samples were collected from the rectum at the beginning of colonoscopy from patients with colorectal neoplasm and healthy normal individuals...
May 4, 2018: Gut and Liver
https://www.readbyqxmd.com/read/29725466/downregulation-of-sm22%C3%AE-protein-by-hypermethylation-of-its-promoter-in-colorectal-cancer
#18
Yabin Liu, Erqiang Wei, Jian Zhao, Dexian Kong, Binghui Li
Silencing of tumor suppressor genes by hypermethylation in gene promoter regions is a crucial mechanism in carcinogenesis. Gene methylation may be reversible and evaluated easily, thus providing a promising substrate for the development of biomarkers for the detection and prevention of cancer, including colorectal cancer (CRC). In the present study, the protein expression and methylation status of smooth muscle protein 22α (SM22α) was investigated in 78 cases of CRC and adjacent normal tissue. The aim of the study was to investigate the function of SM22α in the pathogenesis of CRC and to identify a candidate biomarker for the early detection of CRC...
May 2018: Oncology Letters
https://www.readbyqxmd.com/read/29720901/updates-on-translational-research-on-prevention-of-polyps-and-colorectal-cancer
#19
REVIEW
Elena M Stoffel
Morbidity and mortality from colorectal cancer (CRC) can be effectively reduced through early detection and prevention. To date, strategies for managing CRC risk have focused primarily on secondary prevention, through screening asymptomatic individuals for colorectal neoplasia. In the United States, implementation of screening among individuals age ≥50 has led to not only decreased CRC-related mortality but also reduced CRC incidence through colonoscopic removal of precancerous polyps. In contrast to screening's endpoint of early detection, the goal of primary prevention of CRC is to arrest and/or reverse colorectal carcinogenesis...
May 2018: Clinics in Colon and Rectal Surgery
https://www.readbyqxmd.com/read/29717372/combined-repeat-laparoscopy-and-transanal-endolumenal-repair-hybrid-approach-in-the-early-management-of-postoperative-colorectal-anastomotic-leaks-technique-and-outcomes
#20
William Tzu-Liang Chen, Saurabh Bansal, Tao-Wei Ke, Sheng-Chi Chang, Yu-Chun Huang, Takashi Kato, Hwei-Ming Wang, Abe Fingerhut
BACKGROUND: Few clear recommendations exist for the management of colorectal anastomotic leaks, often based on surgeon preferences or institutional protocols. The primary goal was to evaluate the feasibility and safety of the combined laparoscopic and transanal (hybrid) approach to treat postoperative colorectal anastomotic leaks. The secondary goals included comparison of outcomes following early (< 5 days after initial resection) versus late (≥ 5 days) detection of leaks...
May 1, 2018: Surgical Endoscopy
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