Search results for "Colore"
showing 10 items of 1250 documents
Reduced expression of TLR4 is associated with the metastatic status of human colorectal cancer.
2007
Signaling mediating colorectal cancer (CRC) progression is incompletely understood. Previously, we identified lipopolysaccharide (LPS), an endotoxin of ubiquitously existing colonic bacteria, as a pivotal stimulus increasing the metastatic potential of human CRC. Since the ubiquitous colonic bacteria release large amounts of LPS this observation could be of enormous relevance for the progression of CRC. In this study we present data contributing to the elucidation of its mode of action. Since both receptors CD14 and TLR4 act as LPS mediators, we determined their expression in various CRC cell lines and in 115 non-metastatic, lymphogenous-metastatic and haematogenous-metastatic CRC specimens…
Multisciplinary management of patients with liver metastasis from colorectal cancer
2016
Abstract: Colorectal cancer (CRC) is one of the leading causes of cancer-related death. Surgery, radiotherapy and chemotherapy have been till now the main therapeutic strategies for disease control and improvement of the overall survival. Twenty-five per cent (25%) of CRC patients have clinically detectable liver metastases at the initial diagnosis and approximately 50% develop liver metastases during their disease course. Twenty-thirty per cent (20%-30%) are CRC patients with metastases confined to the liver. Some years ago various studies showed a curative potential for liver metastases resection. For this reason some authors proposed the conversion of unresectable liver metastases to res…
Colorectal cancer-derived small extracellular vesicles induce TGFβ1-mediated epithelial to mesenchymal transition of normal hepatocytes: new insights…
2023
More than 50% of patients affected by colorectal cancer (CRC) present liver metastasis, which is the most frequent cause of CRC-associated death. Numerous studies have shown that metastatic cascade is the result of complex mechanisms based on two-way interactions between invasive CRC cells and liver resident cells. In recent years, several findings have demonstrated that small extracellular vesicles (SEVs) released by cancer cells play a crucial role in the formation of pre-metastatic niche in the liver, specifically affecting the activities of non-parenchymal cells as Kupffer cells and hepatic stellate cells. However, although hepatocytes (heps) are the most conspicuous in the liver, their…
Indications for Locoregional Tumor Therapies: CRC Liver Metastases
2018
The liver represents the most affected site in patients affected by colorectal carcinoma (mCRC) [1]. More than half cases develop colorectal liver metastases (CLMs) during the evolution of the disease, and about one-quarter occur at the disease onset [1, 2]. To date, the standard treatment of CLM is represented by liver surgery, which has allowed to achieve interesting long-term survival rates (40-60%) [3] in reported series, while it is less than 25% for patients who do not undergo surgery [4]. Unfortunately, most patients (80%), however, are not immediately eligible for surgery [5, 6]. For these patients, surgical treatment may be administered in combination with chemotherapy regimens (+/…
The Southampton Consensus Guidelines for Laparoscopic Liver Surgery: From Indication to Implementation
2018
OBJECTIVE: The European Guidelines Meeting on Laparoscopic Liver Surgery was held in Southampton on February 10 and 11, 2017 with the aim of presenting and validating clinical practice guidelines for laparoscopic liver surgery.BACKGROUND: The exponential growth of laparoscopic liver surgery in recent years mandates the development of clinical practice guidelines to direct the speciality's continued safe progression and dissemination.METHODS: A unique approach to the development of clinical guidelines was adopted. Three well-validated methods were integrated: the Scottish Intercollegiate Guidelines Network methodology for the assessment of evidence and development of guideline statements; th…
Long-term Oncologic Outcome After Transanal Endoscopic Microsurgery for Rectal Carcinoma
2015
Transanal endoscopic microsurgery is superior to other methods of local excision of rectal cancer, but few studies report long-term follow-up data.This study investigated the use of transanal endoscopic microsurgery alone as curative and compromise therapy based on long-term disease recurrence and mortality.This was a retrospective review of prospectively collected data.The study was conducted at a tertiary care university medical center.The study included 133 patients treated between 1985 and 2007. There were 3 groups, including transanal endoscopic microsurgery in curative intent (low-risk rectal carcinoma, including pT1, G1/2, L0, and LX with clear margins and a minimal distance between …
Estudio de acetilación de proteínas en líneas celulares humanas de cáncer colorectal KRAS mutado y salvaje
2016
El estado mutacional de KRAS es el principal predictor negativo de respuesta a terapias anti-factor de crecimiento epidérmico (EGFR) en pacientes diagnosticados de cáncer colorectal avanzado (CRC). Sin embargo existe datos contradictorios sobre las causas de la respuesta variable a estos fármacos diana de acuerdo con la presencia de mutaciones, de hecho publicaciones recientes han presentado datos no concluyentes sobre los pacientes portadores de mutaciones en el codón 13. En nuestro trabajo, hemos estudiado el impacto de la presencia de mutaciones en KRAS en proteínas intracelulares no histónicas. Para ello hemos utilizado diferentes líneas celulares de cáncer colorectal portadoras de dife…
Signal transduction pathways of the epidermal growth factor receptor in colorectal cancer and their inhibition by small molecules.
2012
While prognostic factors can help to classify the standard risk of subpopulations of patients with the same tumor entity, it is still not possible to predict the response of individual patients to specific therapies. The reason for such wide variation in cancer therapy responses remains largely unknown. The field of chemotherapy is currently undergoing a paradigm shift from classical cytotoxic chemotherapy to targeted therapy in order to kill tumor cells more efficiently with fewer side effects on normal tissue. In the present review, we focus on colorectal carcinoma, which is one of the most frequent tumor types worldwide and represents a leading cause of cancer-related deaths. The signali…
Fish and human health: an umbrella review of observational studies
2022
Fish represents one of the most important dietary sources of omega-3 polyunsaturated fatty acids, which are known to be associated with various health benefits. This study aimed to systematically review existing meta-analyses of observational studies exploring the association between fish intake and various health outcomes. A systematic search of electronic databases was conducted to retrieve a total of 63 studies. Evidence was deemed as possible for the association between higher fish intake and decreased risk of the acute coronary syndrome, liver cancer, and depression, and limited for other outcomes (including age-related macular degeneration, Alzheimer’s disease, heart failure, all-caus…
Cancer in Elderly Onset Inflammatory Bowel Disease: A Population-Based Study.
2016
IF 10.383; International audience; OBJECTIVES: Cancer may be a complication of inflammatory bowel disease (IBD) or its treatment. In elderly onset IBD patients the risk of malignancy is of particular concern. We studied this risk in a population-based cohort of elderly onset IBD patients.METHODS: In a French population-based cohort, we identified 844 patients aged >60 years at IBD diagnosis from 1988 to 2006, including 370 Crohn's disease (CD) and 474 ulcerative colitis (UC). We compared incidence of cancer among IBD patients with that observed in the French Network of population-based Cancer Registries (FRANCIM). Confidence interval (CI) was estimated assuming a Poisson-specific law for ra…