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https://www.readbyqxmd.com/read/28329272/thoracoscopic-surgery-versus-open-surgery-for-lung-metastases-of-colorectal-cancer-a-multi-institutional-retrospective-analysis-using-propensity-score-adjustment%C3%A2
#1
Tomohiro Murakawa, Hajime Sato, Sakae Okumura, Jun Nakajima, Hirotoshi Horio, Yuichi Ozeki, Hisao Asamura, Norihiko Ikeda, Hajime Otsuka, Haruhisa Matsuguma, Ichiro Yoshino, Masayuki Chida, Mitsuo Nakayama, Toshihiko Iizasa, Meinoshin Okumura, Satoshi Shiono, Ryoichi Kato, Tomohiko Iida, Noriyuki Matsutani, Masafumi Kawamura, Yukinori Sakao, Kazuhito Funai, Go Furuyashiki, Hirohiko Akiyama, Shigeki Sugiyama, Naoki Kanauchi, Yuji Shiraishi
OBJECTIVES: Thoracoscopic surgery for lung metastasectomy remains controversial. The study aimed at determining the efficacy of thoracoscopic surgery for lung metastasectomy. METHODS: This was a multi-institutional, retrospective study that included 1047 patients who underwent lung metastasectomy for colorectal cancer between 1999 and 2014. Prognostic factors of overall survival were compared between the thoracoscopic and open thoracotomy groups using the multivariate Cox proportional hazard model...
February 16, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28327965/carbon-dating-cancer-defining-the-chronology-of-metastatic-progression-in-colorectal-cancer
#2
H Lote, I Spiteri, L Ermini, A Vatsiou, A Roy, A McDonald, N Maka, M Balsitis, N Bose, M Simbolo, A Mafficini, A Lampis, J C Hahne, F Trevisani, Z Eltahir, G Mentrasti, C Findlay, Eaj Kalkman, M Punta, B Werner, S Lise, A Aktipis, C Maley, M Greaves, C Braconi, J White, M Fassan, A Scarpa, A Sottoriva, N Valeri
Background: HASH(0x41be4a0) Patients often ask oncologists how long a cancer has been present before causing symptoms or spreading to other organs. The evolutionary trajectory of cancers can be defined using phylogenetic approaches but lack of chronological references makes dating the exact onset of tumours very challenging. Patients and Methods: HASH(0x4193ff0) Here we describe the case of a colorectal cancer patient presenting with synchronous lung metastasis and metachronous thyroid, chest wall and urinary tract metastases over the course of five years...
February 23, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28327152/trim8-restores-p53-tumour-suppressor-function-by-blunting-n-myc-activity-in-chemo-resistant-tumours
#3
Francesca Mastropasqua, Flaviana Marzano, Alessio Valletti, Italia Aiello, Giuseppe Di Tullio, Annalisa Morgano, Sabino Liuni, Elena Ranieri, Luisa Guerrini, Giuseppe Gasparre, Elisabetta Sbisà, Graziano Pesole, Antonio Moschetta, Mariano Francesco Caratozzolo, Apollonia Tullo
BACKGROUND: TRIM8 plays a key role in controlling the p53 molecular switch that sustains the transcriptional activation of cell cycle arrest genes and response to chemotherapeutic drugs. The mechanisms that regulate TRIM8, especially in cancers like clear cell Renal Cell Carcinoma (ccRCC) and colorectal cancer (CRC) where it is low expressed, are still unknown. However, recent studies suggest the potential involvement of some microRNAs belonging to miR-17-92 and its paralogous clusters, which could include TRIM8 in a more complex pathway...
March 21, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/28327112/prognosis-of-ulcerative-colitis-colorectal-cancer-vs-sporadic-colorectal-cancer-propensity-score-matching-analysis
#4
Yoon Dae Han, Mahdi Hussain Al Bandar, Audrius Dulskas, Min Soo Cho, Hyuk Hur, Byung Soh Min, Kang Young Lee, Nam Kyu Kim
BACKGROUND: Ulcerative colitis (UC) harbours a high risk of UC-associated colorectal cancer (UCCC), which is important cause of morbidity and mortality in patients with inflammatory bowel disease. Overall Survival (OS) of patients with UCCC has not been addressed well in the literature. Thus, we compared oncologic outcome of UCCC and sporadic colorectal cancer (SCC) using propensity score matching analysis. METHODS: Propensity score matching was performed for 36 patients, a 1:1 matching method stratified into 18 in UCCC and 18 patients in SCC...
March 21, 2017: BMC Surgery
https://www.readbyqxmd.com/read/28325252/the-role-of-perineural-invasion-in-predicting-survival-in-patients-with-primary-operable-colorectal-cancer-a-systematic-review
#5
REVIEW
H C van Wyk, James Going, Paul Horgan, Donald C McMillan
Perineural invasion is a clear route for cancer cell spread however, the role of nerves in cancer progression is relatively unknown. Recent work would suggest that nerves can actively infiltrate the tumour microenvironment and stimulate cancer cell growth. Therefore, the aim of the present study was to systematically review the identification and associations of perineural invasion and survival in patients with primary operable colorectal cancer. From initial search results of 912 articles, 38 studies were selected...
April 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28320558/can-intra-operative-fluorescence-play-a-significant-role-in-hepatobiliary-surgery
#6
REVIEW
A D Jones, J C Wilton
Liver resection remains the cornerstone of curative treatment for hepatocellular carcinoma and colorectal cancer liver metastases. Its success is dependent upon the extent of resection achieved. To this end, intra-operative imaging techniques have been experimented with to aid the surgeon. Fluorescence guided surgery (FGS) utilises the properties of near infrared light emitting molecules to identify malignant tissue, enabling the surgeon to maximise resection of diseased tissue and minimise collateral damage...
March 6, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28317047/biliary-metastasis-in-colorectal-cancer-confers-a-poor-prognosis-case-study-of-5-consecutive-patients
#7
Frederick Hong-Xiang Koh, Wang Shi, Ker-Kan Tan
The biliary duct is an extremely rare site for colon cancer metastasis. It often leads to a diagnostic dilemma, since primary cholangiocarcinoma (potentially treatable with surgery) has a similar presentation. This paper highlights our experience with 5 consecutive patients who had colon malignancy with biliary metastasis, and prognosis of their disease. Five patients, with a history of primary colon cancer since 2010, were identified to have biliary metastasis. Of these, 4 (80.0%) patients were male. The median time to diagnosis of biliary metastasis from diagnosis of colon cancer was 59...
February 2017: Ann Hepatobiliary Pancreat Surg
https://www.readbyqxmd.com/read/28315607/correcting-bias-due-to-missing-stage-data-in-the-non-parametric-estimation-of-stage-specific-net-survival-for-colorectal-cancer-using-multiple-imputation
#8
Milena Falcaro, James R Carpenter
BACKGROUND: Population-based net survival by tumour stage at diagnosis is a key measure in cancer surveillance. Unfortunately, data on tumour stage are often missing for a non-negligible proportion of patients and the mechanism giving rise to the missingness is usually anything but completely at random. In this setting, restricting analysis to the subset of complete records gives typically biased results. Multiple imputation is a promising practical approach to the issues raised by the missing data, but its use in conjunction with the Pohar-Perme method for estimating net survival has not been formally evaluated...
March 15, 2017: Cancer Epidemiology
https://www.readbyqxmd.com/read/28314739/intratumorous-heterogeneity-for-ras-mutations-in-a-treatment-na%C3%A3-ve-colorectal-tumour
#9
Sebastian Lunke, Belinda Lee, Sevastjan Kranz, Peter Gibbs, Paul Waring, Michael Christie
Activating mutations in KRAS and NRAS genes in patients with colorectal cancer (CRC) are associated with a lack of response to treatment with anti-epidermal growth factor receptor (EGFR) therapies. Mutations in these genes are thought to be mutually exclusive, however reports have described CRCs with two activating rat sarcoma (RAS) mutations. This has fuelled discussion about whether these mutations are the result of intratumorous heterogeneity, or if they are co-occurring in the same cancer cell clone. We present a case of a colorectal tumour with three RAS mutations detected during routine diagnostic testing...
March 17, 2017: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28304120/comparative-effectiveness-of-chemotherapy-versus-resection-of-the-primary-tumor-as-the-initial-treatment-in-older-patients-with-stage-iv-colorectal-cancer
#10
Hemalkumar B Mehta, Gabriela M Vargas, Deepak Adhikari, Francesca Dimou, Taylor S Riall
AIM: The objective was to determine trends in the use of chemotherapy as the initial treatment and evaluate the comparative effectiveness of initial chemotherapy versus resection of the primary tumour on survival (intention-to-treat analysis) in stage IV colorectal cancer (CRC). METHODS: This cohort study used Surveillance Epidemiology, and End Results (SEER)-Medicare (2000-2011) data, including patients ≥66 years presenting with stage IV CRC. Cox proportional hazards models and instrumental variable analysis were used to determine the association of chemotherapy versus resection of the primary tumour as the initial treatment with 2-year survival...
March 17, 2017: Colorectal Disease: the Official Journal of the Association of Coloproctology of Great Britain and Ireland
https://www.readbyqxmd.com/read/28302330/precision-surgery-for-colorectal-liver-metastases-opportunities-and-challenges-of-omics-based-decision-making
#11
REVIEW
R P Jones, K W Brudvik, J M Franklin, G J Poston
Precision surgery involves improving patient selection to ensure that surgical intervention that is proven to benefit on a population level is the optimal treatment for each individual patient. For patients with colorectal liver metastases (CRLM), existing prognostic scoring systems rely on well-recognised histopathological features such as size and number of lesions. Advances in preoperative imaging algorithms mean that increasingly low volume disease can be detected, improving assessment of these factors...
March 6, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28302009/expression-and-single-nucleotide-polymorphism-of-poly-adp-ribose-polymerase-1-in-gastrointestinal-tumours-clinical-involvement
#12
Sandra María Martín-Guerreroa, Josefa Leóna, Rosa Quiles-Pereza, Laura Belmontee, David Martin-Olivaa, Ángeles Ruiz-Extremeraa, Javier Salmeróna, José Antonio Muñoz-Gámez
Poly(ADP-ribose) polymerase-1 (PARP-1) is a nuclear enzyme that plays a critical role in diverse cellular functions, such as DNA damage detection and repair, transcriptional regulation and cell death. Furthermore, PARP-1 has emerged as a key player in the pathogenesis of multiple inflammatory diseases and has become a promising target for the treatment of cardiovascular disorders, neurodegenerative diseases and cancer. An increasing body of evidence has linked alterations in the expression levels of PARP-1, enzymatic activity and presence of polymorphism to gastrointestinal malignancies, including oesophageal, gastric, pancreas, liver and colorectal cancers...
March 16, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28300841/induction-of-intestinal-stemness-and-tumorigenicity-by-aberrant-internalization-of-commensal-non-pathogenic-e-coli
#13
Upasana Sahu, Arnab Choudhury, Suhel Parvez, Subhrajit Biswas, Sudeshna Kar
Commensal Escherichia coli has been identified as a major protagonist of microbe-induced colorectal oncogenesis. Its tumour-promoting attribute is linked to the expression of DNA-damaging genotoxins. Using a constitutively invasive variant of non-pathogenic E. coli, we demonstrate that chronic presence of internalized E. coli leads to enhanced oncogenicity in colon cancer cells. Instead of genomic damage, the tumorigenic effect is mediated through an expansion of the cancer stem cell (CSC) population, likely through dedifferentiation of lineage-committed intestinal epithelial cells...
March 16, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28299802/bmp-and-notch-interaction-in-crc-subtypes
#14
Shazia Irshad, Mukesh Bansal, Paolo Guarnieri, Hayley Davis, Ayman Al Haj Zen, Brygida Baran, Claudia Maria Assunta Pinna, Haseeb Rahman, Sujata Biswas, Chiara Bardella, Rosemary Jeffery, Lai Mun Wang, James Edward East, Annabelle Lewis, Ian Tomlinson, Simon John Leedham
The functional role of Bone Morphogenetic Protein (BMP) signalling in colorectal cancer (CRC) is poorly defined, with contradictory results in cancer cell line models reflecting the inherent difficulties of assessing a signalling pathway that is context dependent and subject to genetic constraints. By assessing the transcriptional response of a diploid human colonic epithelial cell line to BMP ligand stimulation we generated a prognostic BMP signalling signature, which was applied to multiple CRC datasets to investigate BMP heterogeneity across CRC molecular subtypes...
March 15, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28295255/systematic-review-of-the-role-of-biomarkers-in-diagnosing-anastomotic-leakage-following-colorectal-surgery
#15
REVIEW
B U Su'a, H L Mikaere, J L Rahiri, I B Bissett, A G Hill
BACKGROUND: Anastomotic leakage (AL) following colorectal surgery can be difficult to diagnose owing to varying clinical presentations. This systematic review aimed to assess biomarkers as potential diagnostic tests for preclinical detection of AL. METHODS: A comprehensive literature review was conducted according to PRISMA guidelines. All published studies evaluating biomarkers, both systemic and peritoneal, in the context of AL following colorectal surgery were included...
April 2017: British Journal of Surgery
https://www.readbyqxmd.com/read/28293327/the-dynamic-dna-methylation-landscape-of-the-mutl-homolog-1-shore-is-altered-by-mlh1-93g-a-polymorphism-in-normal-tissues-and-colorectal-cancer
#16
Andrea J Savio, Miralem Mrkonjic, Mathieu Lemire, Steven Gallinger, Julia A Knight, Bharat Bapat
BACKGROUND: Colorectal cancers (CRCs) undergo distinct genetic and epigenetic alterations. Expression of mutL homolog 1 (MLH1), a mismatch repair gene that corrects DNA replication errors, is lost in up to 15% of sporadic tumours due to mutation or, more commonly, due to DNA methylation of its promoter CpG island. A single nucleotide polymorphism (SNP) in the CpG island of MLH1 (MLH1-93G>A or rs1800734) is associated with CpG island hypermethylation and decreased MLH1 expression in CRC tumours...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/28284171/molecular-subtypes-of-metastatic-colorectal-cancer-are-associated-with-patient-response-to-irinotecan-based-therapies
#17
M Del Rio, C Mollevi, F Bibeau, N Vie, J Selves, J-F Emile, P Roger, C Gongora, J Robert, N Tubiana-Mathieu, M Ychou, P Martineau
BACKGROUND: Currently, metastatic colorectal cancer is treated as a homogeneous disease and only RAS mutational status has been approved as a negative predictive factor in patients treated with cetuximab. The aim of this study was to evaluate if recently identified molecular subtypes of colon cancer are associated with response of metastatic patients to first-line therapy. PATIENTS AND METHODS: We collected and analysed 143 samples of human colorectal tumours with complete clinical annotations, including the response to treatment...
March 8, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28282860/strategies-for-overcoming-resistance-in-tumours-harboring-braf-mutations
#18
REVIEW
Nourah Mohammad Obaid, Karen Bedard, Weei-Yuarn Huang
The development of resistance to previously effective treatments has been a challenge for health care providers and a fear for patients undergoing cancer therapy. This is an unfortunately frequent occurrence for patients undergoing targeted therapy for tumours harboring the activating V600E mutation of the BRAF gene. Since the initial identification of the BRAF mutation in 2002, a series of small molecular inhibitors that target the BRAFV600E have been developed, but intrinsic and acquired resistance to these drugs has presented an ongoing challenge...
March 8, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28279018/correlation-of-ultrasound-shear-wave-elastography-with-pathological-analysis-in-a-xenografic-tumour-model
#19
Eli Elyas, Efthymia Papaevangelou, Erwin J Alles, Janine T Erler, Thomas R Cox, Simon P Robinson, Jeffrey C Bamber
The objective of this study was to evaluate the potential value of ultrasound (US) shear wave elastography (SWE) in assessing the relative change in elastic modulus in colorectal adenocarcinoma xenograft models in vivo and investigate any correlation with histological analysis. We sought to test whether non-invasive evaluation of tissue stiffness is indicative of pathological tumour changes and can be used to monitor therapeutic efficacy. US-SWE was performed in tumour xenografts in 15 NCr nude immunodeficient mice, which were treated with either the cytotoxic drug, Irinotecan, or saline as control...
December 2017: Scientific Reports
https://www.readbyqxmd.com/read/28276469/engineering-a-vascularised-3d-in-vitro-model-of-cancer-progression
#20
Tarig Magdeldin, Víctor López-Dávila, Judith Pape, Grant W W Cameron, Mark Emberton, Marilena Loizidou, Umber Cheema
The hallmark of tumours is the ability of cancerous cells to promote vascular growth, to disseminate and invade to distant organs. The metastatic process is heavily influenced by the extracellular matrix (ECM) density and composition of the surrounding tumour microenvironment. These microenvironmental cues, which include hypoxia, also regulate the angiogenic processes within a tumour, facilitating the spread of cancer cells. We engineered compartmentalized biomimetic colorectal tumouroids with stromal surrounds that comprised a range of ECM densities, composition and stromal cell populations...
March 9, 2017: Scientific Reports
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