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https://www.readbyqxmd.com/read/29774103/bevacizumab-exacerbates-sinusoidal-obstruction-syndrome-sos-in-the-animal-model-and-increases-mmp-9-production
#1
Azin Jafari, Hanno Matthaei, Sven Wehner, Tolga Tonguc, Jörg C Kalff, Steffen Manekeller
Background: Thanks to modern multimodal treatment the ouctome of patients with colorectal cancer has experienced significant improvements. As a downside, agent specific side effects have been observed such as sinusoidal obstruction syndrome (SOS) after oxaliplatin chemotherapy (OX). Bevazicumab targeting VEGF is nowadays comprehensively used in combination protocols with OX but its impact on hepatotoxicity is thus far elusive and focus of the present study. Results: After MCT administration 67% of animals developed SOS...
April 24, 2018: Oncotarget
https://www.readbyqxmd.com/read/29773766/impact-of-the-ser326cys-polymorphism-of-the-ogg1-gene-on-the-level-of-oxidative-dna-damage-in-patients-with-colorectal-cancer
#2
Jacek Kabzinski, Anna Walczak, Adam Dziki, Michał Mik, Ireneusz Majsterek
As a result of reactive oxygen species operation, cell damage occurs in both cellular organelles and molecules, including DNA. Oxidative damage within the genetic material can lead to accumulation of mutations and consequently to cancer transformation. OGG1 glycosylase, a component of the Base Excision Repair (BER) system, is one of the enzymes that prevents excessive accumulation of 8-oxoguanine (8-oxG), the most common compound formed by oxidative DNA damage. In case of structural changes of OGG1 resulting from polymorphic variants, we can observe a significant increase in the concentration of 8-oxG...
April 30, 2018: Polski Przeglad Chirurgiczny
https://www.readbyqxmd.com/read/29719419/emergency-treatment-of-complicated-colorectal-cancer
#3
Giovanni Domenico Tebala, Andrea Natili, Antonio Gallucci, Gioia Brachini, Abdul Qayyum Khan, Domenico Tebala, Andrea Mingoli
Aim: To find evidence to suggest the best approach in patients admitted as an emergency for complicated colorectal cancer. Methods: The medical records of 131 patients admitted as an emergency with an obstructing, perforated, or bleeding colorectal cancer to Noble's Hospital, Isle of Man, and the Umberto I University Hospital, Rome, were retrospectively evaluated. Patients were divided in 3 groups on the basis of the emergency treatment they received, namely 1) immediate resection, 2) damage control procedure and elective or semielective resection, and 3) no radical treatment...
2018: Cancer Management and Research
https://www.readbyqxmd.com/read/29682704/-anastomotic-leakage-after-rectal-cancer-surgery-classification-and-management
#4
Pan Chi, Shenghui Huang
Many studies have focused on the identification of risk factors and prevention of anastomotic leakage following rectal cancer surgery. However, there is little knowledge regarding classification and management of anastomotic leakage in clinic. Herein, we reviewed and summarized the classification and management of anastomotic leakage after rectal cancer surgery. The relevant treatments of anastomotic leakage should be chosen based on patient's manifestation, including general and local reactions, anatomical location, and nature of the leakage (contained or free, controlled or uncontrolled leakage)...
2018: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/29676606/awareness-of-mutational-artefacts-in-suboptimal-dna-samples-possible-risk-for-therapeutic-choices
#5
Sara Mariani, Luca Bertero, Vittoria Coppola, Giorgio Saracco, Alberto Arezzo, Paola Francia di Celle, Jasna Metovic, Caterina Marchiò, Paola Cassoni
BACKGROUND: Technical biases due to PCR artefacts could represent an insidious obstacle for mutational analysis and precision medicine. METHODS: The authors report a retrospective analysis by fast COLD-PCR and sequencing of 31 suboptimal tumor DNA samples obtained from FFPE tissues and liquid biopsies. RESULTS: In FFPE tumor tissues and plasma liquid biopsies of patients with lung and colorectal adenocarcinoma, we observed a significant rate of artefactual KRAS mutations, unveiled by repeated analysis following UDG pretreatment as well as by simple repetition without UDG pretreatment step, thus suggesting a DNA damage different from cytosine deamination...
April 20, 2018: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/29621129/plants-and-surgery-the-protective-effects-of-thymoquinone-on-hepatic-injury-a-systematic-review-of-in-vivo-studies
#6
REVIEW
Aysun Tekbas, Jutta Huebner, Utz Settmacher, Uta Dahmen
Multimodal treatment concepts including liver transplantation for hepatocellular carcinoma (HCC), extended resection methods and neoadjuvant chemotherapy for colorectal liver metastasis significantly improve patients’ outcome. However, surgery-induced hepatic ischemia-reperfusion injury (IRI) and chemotherapy-associated hepatotoxicity result in hepatocellular damage and compromised liver function. Activation of common key pathways in ischemic liver and hepatotoxic injury results in oxidative stress, inflammatory responses and apoptosis causing organ damage...
April 5, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29616110/overexpression-of-xeroderma-pigmentosum-group-c-decreases-the-chemotherapeutic-sensitivity-of-colorectal-carcinoma-cells-to-cisplatin
#7
Yi Zhang, Jia Cao, Yanni Meng, Chunying Qu, Feng Shen, Leiming Xu
Xeroderma pigmentosum group C (XPC) is a DNA-damage-recognition gene active at the early stage of DNA repair. XPC also participates in regulation of cell-cycle checkpoint and DNA-damage-induced apoptosis. In the present study, the expression levels of genes involved in nucleotide excision repair (NER) were assessed in human colorectal cancer (CRC) tissue. This analysis revealed that expression of XPC mRNA significantly increased in colorectal carcinoma tissues compared with matched normal controls. Expression of XPC gradually increased along with the degree of progression of CRC...
May 2018: Oncology Letters
https://www.readbyqxmd.com/read/29579325/a-phase-2-study-of-the-parp-inhibitor-veliparib-plus-temozolomide-in-patients-with-heavily-pretreated-metastatic-colorectal-cancer
#8
Michael J Pishvaian, Rebecca S Slack, Wei Jiang, A Ruth He, Jimmy J Hwang, Amy Hankin, Karen Dorsch-Vogel, Divyesh Kukadiya, Louis M Weiner, John L Marshall, Jonathan R Brody
BACKGROUND: Poly(adenosine diphosphate ribose) polymerase (PARP) inhibitors such as veliparib are potent sensitizing agents and have been safely combined with DNA-damaging agents such as temozolomide. The sensitizing effects of PARP inhibitors are magnified when cells harbor DNA repair defects. METHODS: A single-arm, open-label, phase 2 study was performed to investigate the disease control rate (DCR) after 2 cycles of veliparib plus temozolomide in patients with metastatic colorectal cancer (mCRC) refractory to all standard therapies...
March 26, 2018: Cancer
https://www.readbyqxmd.com/read/29545575/efficacy-and-safety-of-apatinib-in-patients-with-previously-treated-metastatic-colorectal-cancer-a-real-world-retrospective-study
#9
Miaomiao Gou, Haiyan Si, Yong Zhang, Niansong Qian, Zhikuan Wang, Weiwei Shi, Guanghai Dai
No definitive treatment strategy has been established for patients with metastatic colorectal cancer (mCRC) who experienced progression after three or more lines of chemotherapy. A total of 36 mCRC patients were enrolled in this retrospective study who received apatinib therapy under non-clinical trial setting after progression in People's liberation army general Hospital from March 2015 and August 2017. Progression free survival (PFS), overall survival (OS), disease control rate (DCR), objective response rate (ORR) and treatment-related adverse events (AEs) were reviewed and evaluated...
March 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29497294/polymeric-micelles-for-potentiated-antiulcer-and-anticancer-activities-of-naringin
#10
Elham Abdelmonem Mohamed, Irhan Ibrahim Abu Hashim, Rehab Mohammad Yusif, Ahmed Abdel Aziz Shaaban, Ahmed Ramadan El-Sheakh, Mohammed Fawzy Hamed, Farid Abd Elreheem Badria
Naringin is one of the most interesting phytopharmaceuticals that has been widely investigated for various biological actions. Yet, its low water solubility, limited permeability, and suboptimal bioavailability limited its use. Therefore, in this study, polymeric micelles of naringin based on pluronic F68 (PF68) were developed, fully characterized, and optimized. The optimized formula was investigated regarding in vitro release, storage stability, and in vitro cytotoxicity vs different cell lines. Also, cytoprotection against ethanol-induced ulcer in rats and antitumor activity against Ehrlich ascites carcinoma in mice were investigated...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29426373/silencing-artemis-enhances-colorectal-cancer-cell-sensitivity-to-dna-damaging-agents
#11
Hai Liu, Xuanxuan Wang, Aihua Huang, Huaping Gao, Yikan Sun, Tingting Jiang, Liming Shi, Xianjie Wu, Qinghua Dong, Xiaonan Sun
Artemis is a key protein of NHEJ (non-homologous end-joining), which is the major pathway for the repair of IR-inducedDSBs in mammalian cells. However, it has not been largely investigated about the expression of Artemis in tumor and the influence of silencing Artemis on the tumor's sensitivity to radiation. In this study, we investigated how expression levels of Artemis may affect treatment outcome of radiotherapy and chemotherapy in colorectal cancer cells. Firstly, we found that the expression of Artemis is strong in some human rectal cancer samples, even can be higher than adjacent normal tissues using immunohistochemical staining...
February 9, 2018: Oncology Research
https://www.readbyqxmd.com/read/29414050/dna-damage-in-blood-cells-in-relation-to-chemotherapy-and-nutritional-status-in-colorectal-cancer-patients-a-pilot-study
#12
Ane Sørlie Kværner, Jun Minaguchi, Naouale El Yamani, Christine Henriksen, Hanna Ræder, Ingvild Paur, Hege Berg Henriksen, Gro Wiedswang, Sigbjørn Smeland, Rune Blomhoff, Andrew Richard Collins, Siv Kjølsrud Bøhn
DNA damage can be considered as a biomarker for toxicity and response to chemotherapy. It is not known whether the chemotherapy-induced genotoxicity is associated with malnutrition. In this pilot study, we assess genotoxicity by means of DNA damage in patients with lymph-node positive colorectal cancer (CRC) and explore associations with chemotherapy treatment and nutritional status. DNA damage was compared between patients receiving chemotherapy (n = 24) and those not receiving chemotherapy (n = 20)...
March 2018: DNA Repair
https://www.readbyqxmd.com/read/29379406/management-of-destructive-colon-injuries-after-damage-control-surgery
#13
REVIEW
Jad Chamieh, Priya Prakash, William J Symons
After the World War II, fecal diversion became the standard of care for colon injuries, although medical, logistic, and technical advancements have challenged this approach. Damage control surgery serves to temporize immediately life-threatening conditions, and definitive management of destructive colon injuries is delayed until after appropriate resuscitation. The bowel can be left in discontinuity for up to 3 days before edema ensues, but the optimal repair window remains within 12 to 48 hours. Delayed anastomosis performed at the take-back operation or stoma formation has been reported with variable results...
January 2018: Clinics in Colon and Rectal Surgery
https://www.readbyqxmd.com/read/29372689/dpyd-genotype-and-haplotype-analysis-and-colorectal-cancer-susceptibility-in-a-case-control-study-from-slovakia
#14
Tatiana Matáková, Erika Halašová, Henrieta Škovierová, Anton Dzian, Dušan Dobrota, Mária Škereňová
Dihydropyrimidine dehydrogenase (DPD) acts as the first-step enzyme catabolizing pyrimidines in vivo. DPYD gene mutations interfere with the breakdown of uracil and thymine. Genetic variations of DPYD can cause an enzyme deficiency state, which results in severe toxicity or other adverse side effects such as DNA damage or RNA damage caused by imbalance of the nucleotide pool. Our case-control study investigates the possible association between seven DPYD gene polymophisms (rs1801267, rs72547602, rs1801160, rs3918290, rs1801159, rs1801158, rs1801265) and risk of colorectal cancer (CRC)...
December 2017: General Physiology and Biophysics
https://www.readbyqxmd.com/read/29317577/-therapeutic-effect-of-anti-cxcl1-neutralizing-antibody-on-acute-ulcerative-colitis-in-mice
#15
Linglong Luo, Xuemei Zhang, Jing Wang, Xiayu Li, Jian Ma, Shourong Shen
To evaluate the therapeutic effect of CXCL1 monoclonal antibody on dextra sulfate sodium (DSS)-induced acute ulcerative colitis (UC) in mice, and to elucidate its effect on the expressions of TNF-α, IFN-γ, IL-17 and IL-10 as well as neutrophil infiltration.
 Methods: Female BALB/c mice were randomly divided into a normal group (DSS-), a disease group (DSS+saline), an anti-CXCL1 antibody group (DSS+anti-CXCL1 Ab) and a treatment control group (DSS+IgG Ab). The DSS+saline, DSS+anti-CXCL1 Ab and DSS+anti-CXCL1 Ab groups were given 3...
December 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/29290768/modulated-electro-hyperthermia-induced-loco-regional-and-systemic-tumor-destruction-in-colorectal-cancer-allografts
#16
Tamas Vancsik, Csaba Kovago, Eva Kiss, Edina Papp, Gertrud Forika, Zoltan Benyo, Nora Meggyeshazi, Tibor Krenacs
Background: Modulated electro-hyperthermia (mEHT), a non-invasive intervention using 13.56 MHz radiofrequency, can selectively target cancers due to their elevated glycolysis (Warburg-effect), extracellular ion concentration and conductivity compared to normal tissues. We showed earlier that mEHT alone can provoke apoptosis and damage associated molecular pattern (DAMP) signals in human HT29 colorectal cancer xenografts of immunocompromised mice. Materials: Here we tested the mEHT induced stress and immune responses in C26 colorectal cancer allografts of immunocompetent (BALB/c) mice between 12-72 h post-treatment...
2018: Journal of Cancer
https://www.readbyqxmd.com/read/29285066/hyperthermia-exposure-induces-apoptosis-and-inhibits-proliferation-in-hct116-cells-by-upregulating-mir-34a-and-causing-transcriptional-activation-of-p53
#17
Zan Luo, Kangxia Zheng, Qi Fan, Xinyao Jiang, Dehai Xiong
Hyperthermia, as an anticancer therapeutic strategy, presents notable advantages in conjunction with irradiation and/or chemotherapy in the treatment of cancer by promoting apoptosis and inhibiting proliferation. A number of studies have documented that hyperthermia inhibits cancer progression through transcriptional activation of p53, which promotes cell cycle arrest and apoptosis. However, the underlying molecular mechanisms of hyperthermia-regulated apoptosis and proliferation dependent on p53 remain largely unknown...
December 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29246227/statin-consumption-as-a-risk-factor-for-developing-colorectal-cancer-a-retrospective-case-study
#18
David Renman, Erik Lundberg, Ulf Gunnarsson, Karin Strigård
BACKGROUND: Statins are the backbone of lipid-lowering therapy and are among the most commonly prescribed drugs in the elderly population in Sweden today. Colorectal cancer is the second most common cancer in men and women, after prostate and breast cancer, respectively, with a median age of 72 years at diagnosis. Statins induce mitochondrial damage leading to accumulation of reactive oxygen species in the cell. Reactive oxygen species can cause mutations in mitochondrial as well as nuclear DNA leading to the development of cancer...
December 16, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29235008/oncological-assessment-of-stent-placement-for-obstructive-colorectal-cancer-from-circulating-cell-free-dna-and-circulating-tumor-dna-dynamics
#19
Goro Takahashi, Takeshi Yamada, Takuma Iwai, Kohki Takeda, Michihiro Koizumi, Seiichi Shinji, Eiji Uchida
BACKGROUND: The self-expanding metallic stent (SEMS) provides effective decompression for patients with malignant large bowel obstruction (MLBO); however, mechanical damage to malignant cells from insertion may negatively affect prognosis, similar to surgical manipulation, and its oncological safety is unclear. We examined mechanical damage from SEMS placement using circulating cell-free DNA (cfDNA) and circulating tumor DNA (ctDNA). METHODS: Between 1 November 2014 and 30 June 2017, 35 MLBO patients were analyzed, comprising 25 SEMS patients and 10 transanal decompression tube (TDT) patients (control)...
March 2018: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/29214422/emu-oil-improves-clinical-indicators-of-disease-in-a-mouse-model-of-colitis-associated-colorectal-cancer
#20
Lauren C Chartier, Gordon S Howarth, Ian C Lawrance, Debbie Trinder, Scott J Barker, Suzanne Mashtoub
BACKGROUND/AIMS: Ulcerative colitis is a remitting and relapsing inflammatory bowel disorder. Current treatments are limited, and if poorly controlled, colitis may progress to colorectal cancer. Previously, Emu Oil protected the intestine in experimental models of gut damage. We aimed to determine whether Emu Oil could reduce the severity of chronic colitis and prevent the onset of neoplasia in a mouse model of colitis-associated colorectal cancer. METHODS: Female C57BL/6 mice were injected (day 0) with azoxymethane, followed by ad libitum access to three dextran sulfate sodium/water cycles (7 days of dextran sulfate sodium and 14 days of water)...
January 2018: Digestive Diseases and Sciences
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