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https://www.readbyqxmd.com/read/28105152/evaluation-by-quantitative-image-analysis-of-anticancer-drug-activity-on-multicellular-spheroids-grown-in-3d-matrices
#1
Aurélie Gomes, Adrien Russo, Guillaume Vidal, Elise Demange, Pauline Pannetier, Zied Souguir, Jean-Michel Lagarde, Bernard Ducommun, Valérie Lobjois
Pharmacological evaluation of anticancer drugs using 3D in vitro models provides invaluable information for predicting in vivo activity. Artificial matrices are currently available that scale up and increase the power of such 3D models. The aim of the present study was to propose an efficient and robust imaging and analysis pipeline to assess with quantitative parameters the efficacy of a particular cytotoxic drug. HCT116 colorectal adenocarcinoma tumor cell multispheres were grown in a 3D physiological hyaluronic acid matrix...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28068158/follow-up-after-rectal-cancer-developing-and-testing-a-novel-patient-led-follow-up-program-study-protocol
#2
Ida Hovdenak Jakobsen, Therese Juul, Inge Bernstein, Peter Christensen, Frank Svendsen Jensen, Christoffer Johansen, Susie Lindhardt Larsen, Søren Laurberg, Mogens Rørbæk Madsen, Ole Thorlacius-Ussing, Henriette Vind Thaysen
BACKGROUND: The main treatment for non-metastatic rectal cancer (RC) is surgical resection. Late adverse effects that are highly prevalent and negatively impact patients' symptom burden and quality of life are: bowel-, urological and sexual dysfunctions; psychological distress; fear of recurrence. Patients and clinicians have requested a more patient-centred follow-up, balancing the focus on detection of recurrence, and physiological and psychological late adverse effects. The current follow-up program primarily focuses on detection of recurrence, with less attention on late adverse effects...
January 9, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28067102/preoperative-modifiable-risk-factors-in-colorectal-surgery-an-observational-cohort-study-identifying-the-possible-value-of-prehabilitation
#3
Stefanus van Rooijen, Francesco Carli, Susanne O Dalton, Christoffer Johansen, Jeanne Dieleman, Rudi Roumen, Gerrit Slooter
BACKGROUND: Colorectal cancer (CRC) is the second most prevalent type of cancer in the world. Surgery is the most common therapeutic intervention, and associated with 20-40% reduction in physiological and functional capacity. Postoperative complications occur in up to 50% of patients resulting in higher mortality rates and greater hospital costs. The number and severity of complications is closely related to patients' preoperative performance status. The aim of this study was to identify the most important preoperative modifiable risk factors that could be part of a multimodal prehabilitation program...
January 9, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28062361/redox-signaling-in-the-gastrointestinal-tract
#4
REVIEW
Salvador Pérez, Raquel Taléns-Visconti, Sergio Rius-Pérez, Isabela Finamor, Juan Sastre
Redox signaling regulates physiological self-renewal, proliferation, migration and differentiation in gastrointestinal epithelium by modulating Wnt/β-catenin and Notch signaling pathways mainly through NADPH oxidases (NOXs). In the intestine, intracellular and extracellular thiol redox status modulates the proliferative potential of epithelial cells. Furthermore, commensal bacteria contribute to intestine epithelial homeostasis through NOX1- and dual oxidase 2-derived reactive oxygen species (ROS). The loss of redox homeostasis is involved in the pathogenesis and development of a wide diversity of gastrointestinal disorders, such as Barrett's esophagus, esophageal adenocarcinoma, peptic ulcer, gastric cancer, ischemic intestinal injury, celiac disease, inflammatory bowel disease and colorectal cancer...
January 3, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28052910/acupuncture-and-pc6-stimulation-for-the-prevention-of-postoperative-nausea-and-vomiting-in-patients-undergoing-elective-laparoscopic-resection-of-colorectal-cancer-a-study-protocol-for-a-three-arm-randomised-pilot-trial
#5
Kun Hyung Kim, Dae Hun Kim, Ji Min Bae, Gyung Mo Son, Kyung Hee Kim, Seung Pyo Hong, Gi Young Yang, Hee Young Kim
INTRODUCTION: This study aims to assess the feasibility of acupuncture and a Pericardium 6 (PC6) wristband as an add-on intervention of antiemetic medication for the prevention of postoperative nausea and vomiting (PONV) in patients undergoing elective laparoscopic colorectal cancer resection. METHODS AND ANALYSIS: A total of 60 participants who are scheduled to undergo elective laparoscopic resection of colorectal cancer will be recruited. An enhanced recovery after surgery protocol using standardised antiemetic medication will be provided for all participants...
January 4, 2017: BMJ Open
https://www.readbyqxmd.com/read/28041630/the-analgesic-effect-of-orexin-a-in-a-murine-model-of-chemotherapy-induced-neuropathic-pain
#6
Satoshi Toyama, Naohito Shimoyama, Megumi Shimoyama
Orexins are neuropeptides that are localized to neurons in the lateral and dorsal hypothalamus but its receptors are distributed to many different regions of the central nervous system. Orexins are implicated in a variety of physiological functions including sleep regulation, energy homeostats, and stress reactions. Furthermore, orexins administered exogenously have been shown to have analgesic effects in animal models. A type of intractable pain in patients is pain due to chemotherapy-induced peripheral neuropathy (CIPN)...
December 24, 2016: Neuropeptides
https://www.readbyqxmd.com/read/28018759/could-the-use-of-an-enhanced-recovery-protocol-in-laparoscopic-donor-nephrectomy-be-an-incentive-for-live-kidney-donation
#7
Aparna Rege, Harold Leraas, Deepak Vikraman, Kadiyala Ravindra, Todd Brennan, Tim Miller, Julie Thacker, Debra Sudan
INTRODUCTION AND BACKGROUND: Gastrointestinal (GI) recovery after major abdominal surgery can be delayed from an ongoing need for narcotic analgesia thereby prolonging hospitalization. Enhanced recovery after surgery (ERAS) is a multimodal perioperative care pathway designed to facilitate early recovery after major surgery by maintaining preoperative body composition and physiological organ function and modifying the stress response induced by surgical exposure. Enhanced recovery programs (ERPs) in colorectal surgery have decreased the duration of postoperative ileus and the hospital stay while showing equivalent morbidity, mortality, and readmission rates in comparison to the traditional standard of care...
November 22, 2016: Curēus
https://www.readbyqxmd.com/read/28013338/colon-cancer-cell-derived-12-s-hete-induces-the-retraction-of-cancer-associated-fibroblast-via-mlc2-rho-rock-and-ca-2-signalling
#8
Serena Stadler, Chi Huu Nguyen, Helga Schachner, Daniela Milovanovic, Silvio Holzner, Stefan Brenner, Julia Eichsteininger, Mira Stadler, Daniel Senfter, Liselotte Krenn, Wolfgang M Schmidt, Nicole Huttary, Sigurd Krieger, Oskar Koperek, Zsuzsanna Bago-Horvath, Konstantin Alexander Brendel, Brigitte Marian, Oliver de Wever, Robert M Mader, Benedikt Giessrigl, Walter Jäger, Helmut Dolznig, Georg Krupitza
Retraction of mesenchymal stromal cells supports the invasion of colorectal cancer cells (CRC) into the adjacent compartment. CRC-secreted 12(S)-HETE enhances the retraction of cancer-associated fibroblasts (CAFs) and therefore, 12(S)-HETE may enforce invasivity of CRC. Understanding the mechanisms of metastatic CRC is crucial for successful intervention. Therefore, we studied pro-invasive contributions of stromal cells in physiologically relevant three-dimensional in vitro assays consisting of CRC spheroids, CAFs, extracellular matrix and endothelial cells, as well as in reductionist models...
December 24, 2016: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/27994577/metabiotics-one-step-ahead-of-probiotics-an-insight-into-mechanisms-involved-in-anticancerous-effect-in-colorectal-cancer
#9
REVIEW
Mridul Sharma, Geeta Shukla
Colorectal cancer is closely associated with environment, diet and lifestyle. Normally it is treated with surgery, radiotherapy or chemotherapy but increasing systemic toxicity, resistance and recurrence is prompting scientists to devise new potent and safer alternate prophylactic or therapeutic strategies. Among these, probiotics, prebiotics, synbiotics, and metabiotics are being considered as the promising candidates. Metabiotics or probiotic derived factors can optimize various physiological functions of the host and offer an additional advantage to be utilized even in immunosuppressed individuals...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27959944/bemer-electromagnetic-field-therapy-reduces-cancer-cell-radioresistance-by-enhanced-ros-formation-and-induced-dna-damage
#10
Katja Storch, Ellen Dickreuter, Anna Artati, Jerzy Adamski, Nils Cordes
Each year more than 450,000 Germans are expected to be diagnosed with cancer subsequently receiving standard multimodal therapies including surgery, chemotherapy and radiotherapy. On top, molecular-targeted agents are increasingly administered. Owing to intrinsic and acquired resistance to these therapeutic approaches, both the better molecular understanding of tumor biology and the consideration of alternative and complementary therapeutic support are warranted and open up broader and novel possibilities for therapy personalization...
2016: PloS One
https://www.readbyqxmd.com/read/27940058/eicosanoid-receptors-targets-for-the-treatment-of-disrupted-intestinal-epithelial-homeostasis
#11
REVIEW
Juan J Moreno
The importance of cyclooxygenase and lipoxygenase pathways and the consequent eicosanoid synthesis in the physiology and pathophysiology of the intestinal epithelium is currently being established. Each eicosanoid (prostanoid, leukotriene, hydroxyeicosatetraenoic acid) preferentially recognizes one or more receptors coupled to one or more signal-transduction processes. This overview focuses on the role of eicosanoid receptors in the maintenance of intestinal epithelium physiology through the control of proliferation/differentiation/apoptosis processes...
December 7, 2016: European Journal of Pharmacology
https://www.readbyqxmd.com/read/27929540/inflammation-and-notch-signaling-a-crosstalk-with-opposite-effects-on-tumorigenesis
#12
REVIEW
Chiara Fazio, Luigi Ricciardiello
The Notch cascade is a fundamental and highly conserved pathway able to control cell-fate. The Notch pathway arises from the interaction of one of the Notch receptors (Notch1-4) with different types of ligands; in particular, the Notch pathway can be activated canonically (through the ligands Jagged1, Jagged2, DLL1, DLL3 or DLL4) or non-canonically (through various molecules shared by other pathways). In the context of tumor biology, the deregulation of Notch signaling is found to be crucial, but it is still not clear if the activation of this pathway exerts a tumor-promoting or a tumor suppressing function in different cancer settings...
December 8, 2016: Cell Death & Disease
https://www.readbyqxmd.com/read/27913273/the-endocrine-vitamin-d-system-in-the-gut
#13
Antonio Barbáchano, Asunción Fernández-Barral, Gemma Ferrer-Mayorga, Alba Costales-Carrera, María Jesús Larriba, Alberto Muñoz
The active vitamin D metabolite 1α,25-dihydroxyvitamin D3 (1,25(OH)2D3) has important regulatory actions in the gut through endocrine and probably also intracrine, autocrine and paracrine mechanisms. By activating the vitamin D receptor (VDR), which is expressed at a high level in the small intestine and colon, 1,25(OH)2D3 regulates numerous genes that control gut physiology and homeostasis. 1,25(OH)2D3 is a major responsible for epithelial barrier function and calcium and phosphate absorption, and the host's defense against pathogens and the inflammatory response by several types of secretory and immune cells...
November 29, 2016: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/27903148/obesity-and-energy-balance-in-gi-cancer
#14
Justin C Brown, Jeffrey A Meyerhardt
The prevalence of overweight (body mass index [BMI], 25 to 29.9 kg/m(2)) and obesity (BMI ≥ 30 kg/m(2)) have increased dramatically in the United States. Because increasing BMI is associated with the development of multiple different cancer types, including most GI cancers, providers will frequently encounter patients with GI cancer who are overweight or obese. Mounting evidence associates overweight and/or obesity with worsened prognosis in multiple GI cancers, including esophageal, gastric, hepatocellular, pancreatic, and colorectal...
December 10, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/27896654/bowel-preparation-is-associated-with-reduced-morbidity-in-elderly-patients-undergoing-elective-colectomy
#15
Scott C Dolejs, Michael J Guzman, Alyssa D Fajardo, Bruce W Robb, Bryan K Holcomb, Ben L Zarzaur, Joshua A Waters
BACKGROUND: Bowel preparation in elderly patients is associated with physiologic derangements that may result in postoperative complications. The aim of this study is to determine the impact of bowel preparation on postoperative outcomes in elderly patients. METHODS: Patients age 75 years and older who underwent elective colectomy were identified from the 2012-2014 American College of National Surgical Quality Improvement Program (ACS-NSQIP database). Patients were grouped into no bowel preparation, mechanical bowel preparation (MBP), oral antibiotic preparation (OABP), or combined MBP + OABP...
November 28, 2016: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/27896510/standard-clinical-protocol-for-bidirectional-hyperthermic-intraperitoneal-chemotherapy-hipec-systemic-leucovorin-5-fluorouracil-and-heated-intraperitoneal-oxaliplatin-in-a-chloride-containing-carrier-solution
#16
Akash M Mehta, Alwin D R Huitema, Jacobus W A Burger, Alexandra R M Brandt-Kerkhof, Sander F van den Heuvel, Victor J Verwaal
BACKGROUND: Intraperitoneal chemotherapy has an established role in the treatment of selected patients with colorectal peritoneal metastases. Oxaliplatin is highly suitable as a chemotherapeutic agent for hyperthermic intraperitoneal chemotherapy (HIPEC), but its use to date has been limited because of the morbidity caused by severe electrolyte and glycemic imbalances associated with 5% glucose as its carrier solution. This report provides an overview of the development, rationale, and application of intraperitoneal chemotherapy and the use of various drugs and carrier solutions...
November 28, 2016: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/27880939/inhibition-of-the-transcriptional-repressor-complex-bcl-6-bcor-induces-endothelial-sprouting-but-does-not-promote-tumor-growth
#17
Elisabeth Buchberger, Dietmar Payrhuber, Miriam El Harchi, Branislav Zagrapan, Katharina Scheuba, Anna Zommer, Edina Bugyik, Balazs Dome, Julia Barbara Kral, Waltraud Cornelia Schrottmaier, Gernot Schabbauer, Peter Petzelbauer, Marion Gröger, Martin Bilban, Christine Brostjan
The oncogenic potential of the transcriptional repressor Bcl-6 (B-cell lymphoma 6) was originally discovered in non-Hodgkin patients and the soluble Bcl-6 inhibitor 79-6 was developed to treat diffuse large B-cell lymphomas with aberrant Bcl-6 expression. Since we found Bcl-6 and its co-repressor BCoR (Bcl-6 interacting co-repressor) to be regulated in human microvascular endothelium by colorectal cancer cells, we investigated their function in sprouting angiogenesis which is central to tumor growth. Based on Bcl-6/BCoR gene silencing we found that the transcriptional repressor complex in fact constitutes an endogenous inhibitor of vascular sprouting by supporting the stalk cell phenotype: control of Notch target genes (HES1, HEY1, DLL4) and cell cycle regulators (cyclin A and B1)...
November 21, 2016: Oncotarget
https://www.readbyqxmd.com/read/27878243/different-functions-of-akt1-and-akt2-in-molecular-pathways-cell-migration-and-metabolism-in-colon-cancer-cells
#18
Sara Häggblad Sahlberg, Anja C Mortensen, Jakob Haglöf, Mikael K R Engskog, Torbjörn Arvidsson, Curt Pettersson, Bengt Glimelius, Bo Stenerlöw, Marika Nestor
AKT is a central protein in many cellular pathways such as cell survival, proliferation, glucose uptake, metabolism, angiogenesis, as well as radiation and drug response. The three isoforms of AKT (AKT1, AKT2 and AKT3) are proposed to have different physiological functions, properties and expression patterns in a cell type-dependent manner. As of yet, not much is known about the influence of the different AKT isoforms in the genome and their effects in the metabolism of colorectal cancer cells. In the present study, DLD-1 isogenic AKT1, AKT2 and AKT1/2 knockout colon cancer cell lines were used as a model system in conjunction with the parental cell line in order to further elucidate the differences between the AKT isoforms and how they are involved in various cellular pathways...
January 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/27874952/nox1-promotes-colon-cancer-cell-metastasis-via-activation-of-the-adam17-pathway
#19
H-P Wang, X Wang, L-F Gong, W-J Chen, Z Hao, S-W Feng, Y-B Wu, T Ye, Y-K Cai
OBJECTIVE: Reactive oxygen species (ROS) generated by endogenous metabolic enzymes are involved in a variety of pathology processes, including cancer. In particular, superoxide-generating NADPH oxidase 1 (Nox1), a member of Nox enzyme family, is highly expressed in the colon tissue and has been implicated in physiological and pathophysiological states of colon cancer. However, the underlying molecular mechanism of Nox1 in the regulation of colon cancer progression remains largely unknown...
November 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27866630/intracellular-synthesis-of-gold-nanoparticles-with-antioxidant-activity-by-probiotic-lactobacillus-kimchicus-dcy51-t-isolated-from-korean-kimchi
#20
Josua Markus, Ramya Mathiyalagan, Yeon-Ju Kim, Ragavendran Abbai, Priyanka Singh, Sungeun Ahn, Zuly Elizabeth Jimenez Perez, Joon Hurh, Deok Chun Yang
A straightforward synthesis of gold nanoparticles (AuNps) is achieved by novel probiotic Lactobacillus kimchicus DCY51(T) isolated from Korean kimchi via an intracellular membrane-bound mechanism. The bioreduction of HAuCl4 into AuNps was verified by ultraviolet-visible spectrophotometry at ∼540nm. AuNps were spherical with varying sizes of 5-30nm. AuNps maintained an average crystallite size of 13nm and demonstrated long-term stability in physiological buffer and biological media. Furthermore, the protective capping layer consisted of amino acid residues and surface-bound proteins rendered them non-toxic to murine macrophage (RAW264...
December 2016: Enzyme and Microbial Technology
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