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vitamin c cancer

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https://www.readbyqxmd.com/read/28922778/circulating-folate-vitamin-b6-and-methionine-in-relation-to-lung-cancer-risk-in-the-lung-cancer-cohort-consortium-lc3
#1
Anouar Fanidi, David C Muller, Jian-Min Yuan, Victoria L Stevens, Stephanie J Weinstein, Demetrius Albanes, Ross Prentice, Cynthia A Thomsen, Mary Pettinger, Qiuyin Cai, William J Blot, Jie Wu, Alan A Arslan, Anne Zeleniuch-Jacquotte, Marjorie L McCullough, Loic Le Marchand, Lynne R Wilkens, Christopher A Haiman, Xuehong Zhang, Jiali Han, Meir J Stampfer, Stephanie A Smith-Warner, Edward Giovannucci, Graham G Giles, Allison M Hodge, Gianluca Severi, Mikael Johansson, Kjell Grankvist, Arnulf Langhammer, Steinar Krokstad, Marit Næss, Renwei Wang, Yu-Tang Gao, Lesley M Butler, Woon-Puay Koh, Xiao-Ou Shu, Yong-Bing Xiang, Honglan Li, Wei Zheng, Qing Lan, Kala Visvanathan, Judith Hoffman Bolton, Per Magne Ueland, Øivind Midttun, Arve Ulvik, Neil E Caporaso, Mark Purdue, Regina G Ziegler, Neal D Freedman, Julie E Buring, I-Min Lee, Howard D Sesso, J Michael Gaziano, Jonas Manjer, Ulrika Ericson, Caroline Relton, Paul Brennan, Mattias Johansson
Background: Circulating concentrations of B vitamins and factors related to one-carbon metabolism have been found to be strongly inversely associated with lung cancer risk in the European Prospective Investigation into Cancer and Nutrition (EPIC) study. The extent to which these associations are present in other study populations is unknown. Methods: Within 20 prospective cohorts from the National Cancer Institute Cohort Consortium, a nested case-control study was designed including 5364 incident lung cancer case patients and 5364 control subjects who were individually matched to case patients by age, sex, cohort, and smoking status...
January 1, 2018: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/28922414/a-nonrandomized-trial-of-vitamin-d-supplementation-for-barrett-s-esophagus
#2
Linda C Cummings, Prashanthi N Thota, Joseph E Willis, Yanwen Chen, Gregory S Cooper, Nancy Furey, Beth Bednarchik, Bronia M Alashkar, John Dumot, Ashley L Faulx, Stephen P Fink, Adam M Kresak, Basel Abusneineh, Jill Barnholtz-Sloan, Patrick Leahy, Martina L Veigl, Amitabh Chak, Sanford D Markowitz
BACKGROUND: Vitamin D deficiency may increase esophageal cancer risk. Vitamin D affects genes regulating proliferation, apoptosis, and differentiation and induces the tumor suppressor 15-hydroxyprostaglandin dehydrogenase (PGDH) in other cancers. This nonrandomized interventional study assessed effects of vitamin D supplementation in Barrett's esophagus (BE). We hypothesized that vitamin D supplementation may have beneficial effects on gene expression including 15-PGDH in BE. METHODS: BE subjects with low grade or no dysplasia received vitamin D3 (cholecalciferol) 50,000 international units weekly plus a proton pump inhibitor for 12 weeks...
2017: PloS One
https://www.readbyqxmd.com/read/28921575/ingested-nitrate-and-nitrite-disinfection-by-products-and-pancreatic-cancer-risk-in-postmenopausal-women
#3
Arbor J L Quist, Maki Inoue-Choi, Peter J Weyer, Kristin E Anderson, Kenneth P Cantor, Stuart Krasner, Laura E Beane Freeman, Mary H Ward, Rena R Jones
Nitrate and nitrite are precursors of N-nitroso compounds (NOC), probable human carcinogens that cause pancreatic tumors in animals. Disinfection by-products (DBP) exposures have also been linked with digestive system cancers, but few studies have evaluated relationships with pancreatic cancer. We investigated the association of pancreatic cancer with these drinking water contaminants and dietary nitrate/nitrite in a cohort of postmenopausal women in Iowa (1986-2011). We used historical monitoring and treatment data to estimate levels of long-term average nitrate and total trihalomethanes (TTHM; the sum of the most prevalent DBP class) and the duration exceeding one-half the maximum contaminant level (>½ MCL; nitrate-nitrogen 5mg/L, 40µg/L TTHM) among participants on public water supplies (PWS) >10 years...
September 16, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28915711/vitamin-k-and-its-analogs-potential-avenues-for-prostate-cancer-management
#4
REVIEW
Subramanyam Dasari, Syed M Ali, Guoxing Zheng, Aoshuang Chen, Venkata Satish Dontaraju, Maarten C Bosland, Andre Kajdacsy-Balla, Gnanasekar Munirathinam
Epidemiological studies have demonstrated a relationship between cancer incidence and dietary habits. Especially intake of certain essential nutrients like vitamins has been shown to be beneficial in experimental studies and some clinical trials. Vitamin K (VK) is an essential nutrient involved in the blood clotting cascade, and there are considerable experimental data demonstrating its potential anticancer activity in several cancer types including prostate cancer. Previous in vitro and in vivo studies have focused mainly on anti-oxidative effects as the underlying anticancer mechanism of VK...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28912804/assessment-of-nutritional-status-digestion-and-absorption-and-quality-of-life-in-patients-with-locally-advanced-pancreatic-cancer
#5
J E Witvliet-van Nierop, C M Lochtenberg-Potjes, N J Wierdsma, H J Scheffer, G Kazemier, K Ottens-Oussoren, M R Meijerink, M A E de van der Schueren
BACKGROUND AND AIM: To provide a comprehensive quantitative assessment of nutritional status, digestion and absorption, and quality of life (QoL) in patients with locally advanced pancreatic cancer (LAPC). METHODS: Sixteen patients with LAPC were prospectively assessed for weight loss (WL), body mass index (BMI), fat-free mass index (FFMI), handgrip strength (HGS), dietary macronutrient intake, serum vitamin levels, resting and total energy expenditure (REE and TEE, indirect calorimetry), intestinal absorption capacity and fecal losses (bomb calorimetry), exocrine pancreatic function (fecal elastase-1 (FE1)), and gastrointestinal quality of life (GIQLI)...
2017: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/28905653/induction-of-cellular-and-molecular-immunomodulatory-pathways-by-vitamin-e-and-vitamin-c
#6
Joseph J Bivona, Sapna Patel, Michael Vajdy
Vitamins E and C are well known small molecules that have been used to maintain health for decades. Recent studies of the cellular and molecular pathways leading to immunomodulation by these molecules have been of interest, as have their anti-oxidant properties and signal transduction pathways for curing or improving infectious diseases and cancer. Areas covered: Herein, the authors provide a definition and the structural classification of vitamins E and C and how these molecules influence cellular function...
September 14, 2017: Expert Opinion on Biological Therapy
https://www.readbyqxmd.com/read/28900765/serum-25-hydroxyvitamin-d-concentrations-and-lung-cancer-risk-in-never-smoking-postmenopausal-women
#7
Ting-Yuan David Cheng, Xiaoling Song, Shirley A A Beresford, Gloria Y F Ho, Karen C Johnson, Mridul Datta, Rowan T Chlebowski, Jean Wactawski-Wende, Lihong Qi, Marian L Neuhouser
PURPOSE: Vitamin D has been implicated in lowering lung cancer risk, but serological data on the association among never-smoking women are limited. We report results examining the association of serum 25-hydroxyvitamin D [25(OH)D] concentrations with lung cancer risk among female never smokers. We also examined whether the association was modified by vitamin D supplementation and serum vitamin A concentrations. METHODS: In the Women's Health Initiative, including the calcium/vitamin D (CaD) Trial, we selected 298 incident cases [191 non-small cell lung cancer (NSCLC) including 170 adenocarcinoma] and 298 matched controls of never smokers...
September 12, 2017: Cancer Causes & Control: CCC
https://www.readbyqxmd.com/read/28894047/the-role-of-vitamin-c-in-epigenetic-regulation
#8
Jolanta Guz, Ryszard Oliński
Vitamin C (L-ascorbic acid) is a micronutrient best known for its anti-scurvy activity in humans. Vitamin C is involved in many biological processes involving enzymatic reactions that are catalyzed by members of dioxygenases which use Fe(II) and 2-oxoglutarate as a co-substrate.The article reviews recent data that suggest the involvement of ascorbate in dioxygenases catalyzed chromatin and DNA modifications which thereby contribute to epigenetic regulation. Concerning chromatin modification, the dioxygenases are involved in distinct demethylation reactions with varying specificity for the position of the lysine on the target histone...
August 24, 2017: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/28886484/augmentation-of-intracellular-iron-using-iron-sucrose-enhances-the-toxicity-of-pharmacological-ascorbate-in-colon-cancer-cells
#9
Kristin E Brandt, Kelly C Falls, Joshua D Schoenfeld, Samuel N Rodman, Zhimin Gu, Fenghuang Zhan, Joseph J Cullen, Brett A Wagner, Garry R Buettner, Bryan G Allen, Daniel J Berg, Douglas R Spitz, Melissa A Fath
Pharmacological doses (> 1mM) of ascorbate (a.k.a., vitamin C) have been shown to selectively kill cancer cells through a mechanism that is dependent on the generation of H2O2 at doses that are safely achievable in humans using intravenous administration. The process by which ascorbate oxidizes to form H2O2 is thought to be mediated catalytically by redox active metal ions such as iron (Fe). Because intravenous iron sucrose is often administered to colon cancer patients to help mitigate anemia, the current study assessed the ability of pharmacological ascorbate to kill colon cancer cells in the presence and absence of iron sucrose...
August 26, 2017: Redox Biology
https://www.readbyqxmd.com/read/28874504/proteome-analysis-of-hypoxic-glioblastoma-cells-reveals-sequential-metabolic-adaptation-nbsp-of-one-carbon-metabolic-pathways
#10
Kangling Zhang, Pei Xu, James L Sowers, Daniel F Machuca, Barsam Mirfattah, Jason Herring, Hui Tang, Yan Chen, Bing Tian, Allan R Brasier, Lawrence C Sowers
Rapidly proliferating tumors are exposed to a hypoxic microenvironment due to their density, high metabolic consumption, and interruptions in blood flow due to immature angiogenesis. Cellular responses to hypoxia promote highly malignant and metastatic behavior, as well as a chemotherapy-resistant state. In order to better understand the complex relationships between hypoxic adaptations and cancer progression, we studied the dynamic proteome responses of glioblastoma cells exposed to hypoxia via an innovative approach: quantification of newly synthesized proteins using heavy stable-isotope arginine labeling combined with accurate assessment of cell replication by quantification of the light/heavy arginine ratio of peptides in histone H4...
September 5, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28869971/leukaemia-vitamin-c-regulates-stem-cells-and-cancer
#11
Peter G Miller, Benjamin L Ebert
No abstract text is available yet for this article.
September 6, 2017: Nature
https://www.readbyqxmd.com/read/28856937/ascorbyl-palmitate-incorporated-paclitaxel-loaded-composite-nanoparticles-for-synergistic-anti-tumoral-therapy
#12
Min Zhou, Xin Li, Yuanyuan Li, Qiu'e Yao, Yue Ming, Ziwei Li, Laichun Lu, Sanjun Shi
A co-loaded drug delivery system based on ascorbyl palmitate that can transport various functional drugs to their targets within a tumor represents an attractive strategy for increasing the efficiency of anticancer treatment. In this study, we developed a dual drug delivery system to encapsulate ascorbyl palmitate (AP) and paclitaxel (PTX) for synergistic cancer therapy. AP, which is a vitamin C derivative, and PTX were incorporated into solid lipid nanoparticles (AP/PTX-SLNs), which were used to treat murine B16F10 melanoma that had metastasized to the lungs of mice...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/28846983/indian-propolis-ameliorates-the-mitomycin-c-induced-testicular-toxicity-by-reducing-dna-damage-and-elevating-the-antioxidant-activity
#13
Sandhya Kumari, Guruprasad Nayak, Sonu T Lukose, Sneha Guruprasad Kalthur, Nandini Bhat, Aswathi R Hegde, Srinivas Mutalik, Guruprasad Kalthur, Satish Kumar Adiga
Development of excellent curative therapy for most of the malignancies has resulted in a growing population of cancer survivors who are at increased risk for a variety of health problems including infertility. Therefore, fertility preservation has become an important issue during cancer treatment in recent years. Combination therapy with natural agents such as vitamins, antioxidants, dietary supplements, and plant products are considered as an attractive option to mitigate normal tissue toxicity imparted by chemotherapy...
August 25, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28837210/derivation-and-validation-of-a-novel-bleeding-risk-score-for-elderly-patients-with-venous-thromboembolism-on-extended-anticoagulation
#14
Eva Seiler, Andreas Limacher, Marie Mean, Hans-Jürg Beer, Joseph Osterwalder, Beat Frauchiger, Marc Righini, Markus Aschwanden, Christian M Matter, Martin Banyai, Nils Kucher, Daniel Staub, Bernhard Lämmle, Nicolas Rodondi, Alessandro Squizzato, Drahomir Aujesky
Existing clinical scores do not perform well in predicting bleeding in elderly patients with acute venous thromboembolism (VTE). We sought to derive an easy-to-use clinical score to help physicians identify elderly patients with VTE who are at high-risk of bleeding during extended anticoagulation (>3 months). Our derivation sample included 743 patients aged ≥65 years with VTE who were enrolled in a prospective multicenter cohort study. All patients received extended anticoagulation with vitamin K antagonists...
August 24, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28835450/the-differential-role-of-reactive-oxygen-species-in-early-and-late-stages-of-cancer
#15
Mohamad Assi
The large doses of vitamin C and E and β-carotene used to reduce reactive oxygen species (ROS) production and oxidative damages in cancerous tissue, have produced disappointing and contradictory results. This therapeutic conundrum was attributed to the double-faced role of ROS, notably, their ability to induce either proliferation or apoptosis of cancer cells. However, for a ROS-inhibitory approach to be effective, it must targets ROS when they induce proliferation rather than apoptosis. Based on recent advances in redox biology, this review underlined a differential regulation of pro- and antioxidant system, respective to the stage of cancer...
August 23, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28835228/vitamin-d-supplementation-in-cutaneous-malignant-melanoma-outcome-vidme-a-randomized-controlled-trial
#16
J De Smedt, S Van Kelst, V Boecxstaens, M Stas, K Bogaerts, D Vanderschueren, C Aura, K Vandenberghe, D Lambrechts, P Wolter, O Bechter, A Nikkels, T Strobbe, G Emri, V Marasigan, M Garmyn
BACKGROUND: Previous studies have investigated the protective effect of vitamin D serum levels, at diagnosis and during the follow-up period after treatment, on melanoma outcome. In the present study we assess whether vitamin D supplementation, in the follow-up period after diagnosis and surgical resection of the primary tumor, has a protective effect on relapse of cutaneous malignant melanoma and whether this protective effect correlates with vitamin D levels in serum and Vitamin D Receptor immunoreactivity in the primary tumor...
August 23, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28830473/survival-outcomes-of-hepatectomy-for-stage-b-hepatocellular-carcinoma-in-the-bclc-classification
#17
Toshiya Kamiyama, Tatsuya Orimo, Kenji Wakayama, Shingo Shimada, Akihisa Nagatsu, Hideki Yokoo, Hirofumi Kamachi, Kenichiro Yamashita, Tsuyoshi Shimamura, Akinobu Taketomi
BACKGROUND: Because hepatectomy is not recommended in patients with stage B hepatocellular carcinoma (HCC) of the Barcelona Clinic Liver Cancer (BCLC) staging, we evaluated the survival outcomes of hepatectomy for stage B in the BCLC system. METHODS: Data were collected from 297 consecutive adult stage B patients who underwent curative hepatectomy for HCC between 1996 and 2014 in Hokkaido University Hospital. Overall survival (OS), disease-free survival (DFS), and risk factors were analyzed using the Kaplan-Meier method...
August 22, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28826845/association-between-dietary-energy-density-and-obesity-associated-cancer-results-from-the-women-s-health-initiative
#18
Cynthia A Thomson, Tracy E Crane, David O Garcia, Betsy C Wertheim, Melanie Hingle, Linda Snetselaar, Mridul Datta, Thomas Rohan, Erin LeBlanc, Rowan T Chlebowski, Lihong Qi
BACKGROUND: Dietary energy density (DED) is the ratio of energy (kilocalories or kilojoules) intake to food weight (grams) and is a measure of diet quality. Consumption of foods high in DED has been associated with weight gain in adults. OBJECTIVE: To investigate the association between baseline DED and incident obesity-associated cancers in the Women's Health Initiative. DESIGN: Prospective cohort study of clinical trial and observational study participants...
August 8, 2017: Journal of the Academy of Nutrition and Dietetics
https://www.readbyqxmd.com/read/28821981/modifiable-factors-and-esophageal-cancer-a-systematic-review-of-published-meta-analyses
#19
REVIEW
Clara Castro, Bárbara Peleteiro, Nuno Lunet
There are marked differences in the etiology of the major histological types of esophageal cancer (EC)-squamous cell carcinomas (ESCC) and adenocarcinomas (EAC). This study aimed to summarize the current scientific knowledge on modifiable risk factors for EC, by histological type, through a systematic review of meta-analyses referenced in PubMed and ISI Web of Knowledge. We identified 100 meta-analyses on risk factors for ESCC (n = 54), EAC (n = 43), or EC (n = 51). ESCC risk significantly increased with alcohol and maté drinking, smoking, red and processed meat consumption and human papillomavirus infection, while it was negatively associated with body mass index and consumption of fruit, vegetables, white meat, folate, and some carotenoids...
August 18, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28821819/dietary-factors-and-polymorphisms-in-vitamin-d-metabolism-genes-the-risk-and-prognosis-of-colorectal-cancer-in-northeast-china
#20
Chen Gong, Zhiping Long, Yanming Yu, Lin Zhu, Jingshen Tian, Shuo Li, Jing Li, Hongyuan Yu, Qiang Chi, Daxun Piao, Fan Wang, Yashuang Zhao, Binbin Cui
CYP24A1 and CYP27B1 are critical genes determining 1α,25(OH)2D3 concentration and impacting on carcinogenesis. A case-control study including 528 colorectal cancer (CRC) patients and 605 cancer-free controls and a follow-up study with 317 cases were conducted in northeast China. Genotypes were tested by TaqMan Genotyping Assays. Individuals carrying the GG genotype of CYP27B1 G > T (rs10877012) exhibited decreased CRC risk compared with those with the TT genotype (ORadjusted (ORadj) = 0.57, 95% Confidence Interval (CI) = 0...
August 18, 2017: Scientific Reports
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