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https://www.readbyqxmd.com/read/28431245/host-microbe-co-metabolism-dictates-cancer-drug-efficacy-in-c-%C3%A2-elegans
#1
Timothy A Scott, Leonor M Quintaneiro, Povilas Norvaisas, Prudence P Lui, Matthew P Wilson, Kit-Yi Leung, Lucia Herrera-Dominguez, Sonia Sudiwala, Alberto Pessia, Peter T Clayton, Kevin Bryson, Vidya Velagapudi, Philippa B Mills, Athanasios Typas, Nicholas D E Greene, Filipe Cabreiro
Fluoropyrimidines are the first-line treatment for colorectal cancer, but their efficacy is highly variable between patients. We queried whether gut microbes, a known source of inter-individual variability, impacted drug efficacy. Combining two tractable genetic models, the bacterium E. coli and the nematode C. elegans, we performed three-way high-throughput screens that unraveled the complexity underlying host-microbe-drug interactions. We report that microbes can bolster or suppress the effects of fluoropyrimidines through metabolic drug interconversion involving bacterial vitamin B6, B9, and ribonucleotide metabolism...
April 20, 2017: Cell
https://www.readbyqxmd.com/read/28424186/circulating-concentrations-of-biomarkers-and-metabolites-related-to-vitamin-status-one-carbon-and-the-kynurenine-pathways-in-us-nordic-asian-and-australian-populations
#2
Øivind Midttun, Despoina Theofylaktopoulou, Adrian McCann, Anouar Fanidi, David C Muller, Klaus Meyer, Arve Ulvik, Wei Zheng, Xiao-Ou Shu, Yong-Bing Xiang, Ross Prentice, Cynthia A Thomson, Mary Pettinger, Graham G Giles, Allison Hodge, Qiuyin Cai, William J Blot, Jie Wu, Mikael Johansson, Johan Hultdin, Kjell Grankvist, Victoria L Stevens, Marjorie L McCullough, Stephanie J Weinstein, Demetrius Albanes, Arnulf Langhammer, Kristian Hveem, Marit Næss, Howard D Sesso, J Michael Gaziano, Julie E Buring, I-Min Lee, Gianluca Severi, Xuehong Zhang, Jiali Han, Meir J Stampfer, Stephanie A Smith-Warner, Anne Zeleniuch-Jacquotte, Loic le Marchand, Jian-Min Yuan, Lesley M Butler, Woon-Puay Koh, Renwei Wang, Yu-Tang Gao, Ulrika Ericson, Emily Sonestedt, Regina G Ziegler, Neal D Freedman, Kala Visvanathan, Miranda R Jones, Caroline Relton, Paul Brennan, Mattias Johansson, Per M Ueland
Background: Circulating concentrations of biomarkers that are related to vitamin status vary by factors such as diet, fortification, and supplement use. Published biomarker concentrations have also been influenced by the variation across laboratories, which complicates a comparison of results from different studies.Objective: We robustly and comprehensively assessed differences in biomarkers that are related to vitamin status across geographic regions.Design: The trial was a cross-sectional study in which we investigated 38 biomarkers that are related to vitamin status and one-carbon and tryptophan metabolism in serum and plasma from 5314 healthy control subjects representing 20 cohorts recruited from the United States, Nordic countries, Asia, and Australia, participating in the Lung Cancer Cohort Consortium...
April 19, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28423553/low-vitamin-d-status-is-associated-with-inflammation-in-patients-with-prostate-cancer
#3
Dong-Dong Xie, Yuan-Hua Chen, Shen Xu, Cheng Zhang, Da-Ming Wang, Hua Wang, Lei Chen, Zhi-Hui Zhang, Mi-Zhen Xia, De-Xiang Xu, De-Xin Yu
Vitamin D deficiency has been associated with increased risks of prostate cancer. Nevertheless, the mechanisms remain unclear. The aim of this study was to analyze the association among prostate cancer, vitamin D status and inflammation. Sixty patients with newly diagnosed prostate cancer and 120 age-matched controls were recruited for this study. Vitamin D status was evaluated and serum inflammatory molecules were measured. Serum 25-(OH)D was lower in patients with prostate cancer. Moreover, serum 25(OH)D was lower in patients with severe prostate cancer than patients with mild and moderate prostate cancer...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28417914/interactions-of-the-insulin-like-growth-factor-axis-and-vitamin-d-in-prostate-cancer-risk-in-the-prostate-cancer-prevention-trial
#4
Fayth L Miles, Phyllis J Goodman, Catherine Tangen, Kathleen C Torkko, Jeannette M Schenk, Xiaoling Song, Michael Pollak, Ian M Thompson, Marian L Neuhouser
Some, but not all, epidemiologic studies report an association between vitamin D and prostate cancer risk. The inconsistent findings might be explained in the context of modification by members of the insulin-like growth factor (IGF) axis. Data and specimens for this nested case-control study (n = 1695 cases and n = 1682 controls) are from the Prostate Cancer Prevention Trial (PCPT). Baseline serum samples were assayed for 25(OH)D, IGF-1, IGF-2, IGFBP-2, IGFBP-3, and the ratio of IGF1:BP3, along with insulin-related markers c-peptide and leptin...
April 12, 2017: Nutrients
https://www.readbyqxmd.com/read/28413771/management-of-aromatase-inhibitor-associated-bone-loss-aibl-in-postmenopausal-women-with-hormone-sensitive-breast-cancer-joint-position-statement-of-the-iof-cabs-ects-ieg-esceo-ims-and-siog
#5
REVIEW
Peyman Hadji, Matti S Aapro, Jean-Jacques Body, Michael Gnant, Maria Luisa Brandi, Jean Yves Reginster, M Carola Zillikens, Claus-C Glüer, Tobie de Villiers, Rod Baber, G David Roodman, Cyrus Cooper, Bente Langdahl, Santiago Palacios, John Kanis, Nasser Al-Daghri, Xavier Nogues, Erik Fink Eriksen, Andreas Kurth, Rene Rizzoli, Robert E Coleman
BACKGROUND: Several guidelines have been reported for bone-directed treatment in women with early breast cancer (EBC) for averting fractures, particularly during aromatase inhibitor (AI) therapy. Recently, a number of studies on additional fracture related risk factors, new treatment options as well as real world studies demonstrating a much higher fracture rate than suggested by randomized clinical controlled trials (RCTs). Therefore, this updated algorithm was developed to better assess fracture risk and direct treatment as a position statement of several interdisciplinary cancer and bone societies involved in the management of AI-associated bone loss (AIBL)...
June 2017: Journal of Bone Oncology
https://www.readbyqxmd.com/read/28410599/the-role-of-vitamin-c-in-the-treatment-of-pain-new-insights
#6
REVIEW
Anitra C Carr, Cate McCall
The vitamin C deficiency disease scurvy is characterised by musculoskeletal pain and recent epidemiological evidence has indicated an association between suboptimal vitamin C status and spinal pain. Furthermore, accumulating evidence indicates that vitamin C administration can exhibit analgesic properties in some clinical conditions. The prevalence of hypovitaminosis C and vitamin C deficiency is high in various patient groups, such as surgical/trauma, infectious diseases and cancer patients. A number of recent clinical studies have shown that vitamin C administration to patients with chronic regional pain syndrome decreases their symptoms...
April 14, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28404860/vitamin-c-puts-the-pedal-to-the-metal
#7
Monica Venere
Increased iron in cancer cells drives selective sensitization of tumors to ascorbate treatment to prolong survival.
April 12, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28399564/interactions-between-genome-wide-significant-genetic-variants-and-circulating-concentrations-of-25-hydroxyvitamin-d-in-relation-to-prostate-cancer-risk-in-the-national-cancer-institute-bpc3
#8
Vasiliki I Dimitrakopoulou, Ruth C Travis, Irene M Shui, Alison Mondul, Demetrius Albanes, Jarmo Virtamo, Antonio Agudo, Heiner Boeing, H Bas Bueno-de-Mesquita, Marc J Gunter, Mattias Johansson, Kay-Tee Khaw, Kim Overvad, Domenico Palli, Antonia Trichopoulou, Edward Giovannucci, David J Hunter, Sara Lindström, Walter Willett, J Michael Gaziano, Meir Stampfer, Christine Berg, Sonja I Berndt, Amanda Black, Robert N Hoover, Peter Kraft, Timothy J Key, Konstantinos K Tsilidis
Genome-wide association studies (GWAS) have identified over 100 single nucleotide polymorphisms (SNPs) associated with prostate cancer. However, information on the mechanistic basis for some associations is limited. Recent research has been directed towards the potential association of vitamin D concentrations and prostate cancer, but little is known about whether the aforementioned genetic associations are modified by vitamin D. We investigated the associations of 46 GWAS-identified SNPs, circulating concentrations of 25-hydroxyvitamin D (25(OH)D), and prostate cancer (3,811 cases, 511 of whom died from the disease, compared with 2,980 controls-from 5 cohort studies that recruited participants over several periods beginning in the 1980s)...
March 15, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28385602/svct-2-determines-the-sensitivity-to-ascorbate-induced-cell-death-in-cholangiocarcinoma-cell-lines-and-patient-derived-xenografts
#9
Changzheng Wang, Hongwei Lv, Wen Yang, Ting Li, Tian Fang, Guishuai Lv, Qin Han, Liwei Dong, Tianyi Jiang, Beige Jiang, Guangshun Yang, Hongyang Wang
Cholangiocarcinoma (CC) is a devastating malignancy with late diagnosis and poor response to conventional chemotherapy. Recent studies have revealed anti-cancer effect of vitamin C (l-ascorbic acid, ascorbate) in several types of cancer. However, the effect of l-ascorbic acid (AA) in CC remains elusive. Herein, we demonstrated that AA induced cytotoxicity in CC cells by generating intracellular reactive oxygen species (ROS), and subsequently DNA damage, ATP depletion, mTOR pathway inhibition. Moreover, AA worked synergistically with chemotherapeutic agent cisplatin to impair CC cells growth both in vitro and in vivo...
April 4, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28384249/a-systematically-structured-review-of-biomarkers-of-dying-in-cancer-patients-in-the-last-months-of-life-an-exploration-of-the-biology-of-dying
#10
Victoria Louise Reid, Rachael McDonald, Amara Callistus Nwosu, Stephen R Mason, Chris Probert, John E Ellershaw, Séamus Coyle
BACKGROUND: The Neuberger review made a number of recommendations to improve end of life care, including research into the biology of dying. An important aspect of the biology of dying is the identification of biomarkers as indices of disease processes. Biomarkers have the potential to inform the current, limited understanding of the dying process and assist clinicians in recognising dying, in particular how to distinguish dying from reversible acute deterioration. OBJECTIVES: To critically appraise the literature on biological factors that may be used as prognostic indicators in advanced cancer patients and to identify candidate biomarkers of the dying process that can be measured serially in cancer patients' bodily fluids...
2017: PloS One
https://www.readbyqxmd.com/read/28375948/higher-meat-intake-is-positively-associated-with-higher-risk-of-developing-pancreatic-cancer-in-an-age-dependent-manner-and-are-modified-by-plasma-antioxidants-a-prospective-cohort-study-epic-norfolk-using-data-from-food-diaries
#11
Alec J Beaney, Paul J R Banim, Robert Luben, Marleen A H Lentjes, Kay-Tee Khaw, Andrew R Hart
OBJECTIVE: Carcinogens in meat may be involved in pancreatic carcinogenesis. Meat intake was investigated using 7-day food diaries and according to factors potentially influencing carcinogenesis: age, cooking method, and antioxidants. METHODS: Twenty-three thousand one hundred thirty-three participants in the European Prospective Investigation of Cancer-Norfolk cohort study completed 7-day food diaries and were followed up. Meat intakes were compared with controls and hazard ratios (HRs) calculated...
May 2017: Pancreas
https://www.readbyqxmd.com/read/28370562/vitamin-c-at-high-concentrations-induces-cytotoxicity-in-malignant-melanoma-but-promotes-tumor-growth-at-low-concentrations
#12
Guang Yang, Yao Yan, Younan Ma, Yixin Yang
Vitamin C has been used in complementary and alternative medicine for cancers regardless of its ineffectiveness in clinical trials and the paradoxical effects antioxidants have on cancer. Vitamin C was found to induce cytotoxicity against cancers. However, the mechanisms of action have not been fully elucidated, and the effects of vitamin C on human malignant melanoma have not been examined. This study revealed that vitamin C at millimolar concentrations significantly reduced the cell viability as well as invasiveness, and induced apoptosis in human malignant melanoma cells...
March 30, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28370539/rar%C3%AE-rxr-synergism-potentiates-retinoid-responsiveness-in-cutaneous-t-cell-lymphoma-cell-lines
#13
Lei Wang, Sebastian S DeMarco, Mary Stuart Peaks, Abigail L Maiorana-Boutilier, JianMing Chen, Miranda J Crouch, Brian M Shewchuk, Saame Raza Shaikh, Charles M Phillips, Lance C Bridges
Retinoids, natural and synthetic derivatives of vitamin A, induce cellular changes by activating nuclear retinoic acid receptors (RAR) and retinoid X receptors (RXR). Although the ability of retinoids to govern gene expression is exploited clinically for cancer therapeutics, the full benefit of retinoid-based strategies is unrealized due to detrimental side effects. Delineating the receptors that prompt cellular outcomes is critical to advancing retinoid-based approaches. Here we identify the receptors that evoke multiple responses in cutaneous T cell lymphoma (CTCL)...
March 31, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28362118/dietary-antioxidants-potential-anticancer-agents
#14
Xiayu Wu, Jiaoni Cheng, Xu Wang
There are several extrinsic and intrinsic factors involving reactive oxygen species that play critical roles in tumor development and progression by inducing DNA mutations, genomic instability, and aberrant pro-tumorigenic signaling. There are various essential micronutrients including minerals and vitamins in the diet, which play pivotal roles in maintaining and reinforcing antioxidant performance, affecting the complex network of genes (nutrigenomic approach) and encoding proteins for carcinogenesis. A lot of these antioxidant agents are available as dietary supplements and are predominant worldwide...
May 2017: Nutrition and Cancer
https://www.readbyqxmd.com/read/28359367/nutritional-regulation-of-coupling-factor-6-a-novel-vasoactive-and-proatherogenic-peptide
#15
REVIEW
Tomohiro Osanai, Kasumi Mikami, Maiko Kitajima, Mayumi Urushizaka, Kumiko Kawasaki, Toshiko Tomisawa, Chieko Itaki, Yuka Noto, Koji Magota, Hirofumi Tomita
High sodium, high glucose, and obesity are important risk factors for age-related diseases such as cardiovascular disease (CVDs), stroke, and cancer. Coupling factor 6 (CF6) is released from vascular endothelial cells and functions as a circulating peptide that inhibits prostacyclin and nitric oxide generation by intracellular acidosis. High glucose elevates CF6 by activation of protein kinase C and p38 mitogen-activated protein kinase, whereas CF6 causes type 2 diabetes mellitus, resulting in a high glucose vicious cycle...
May 2017: Nutrition
https://www.readbyqxmd.com/read/28333111/solanesol-biosynthesis-in-plants
#16
REVIEW
Ning Yan, Yanhua Liu, Hongbo Zhang, Yongmei Du, Xinmin Liu, Zhongfeng Zhang
Solanesol is a non-cyclic terpene alcohol composed of nine isoprene units that mainly accumulates in solanaceous plants. Solanesol plays an important role in the interactions between plants and environmental factors such as pathogen infections and moderate-to-high temperatures. Additionally, it is a key intermediate for the pharmaceutical synthesis of ubiquinone-based drugs such as coenzyme Q10 and vitamin K2, and anti-cancer agent synergizers such as N-solanesyl-N,N'-bis(3,4-dimethoxybenzyl) ethylenediamine (SDB)...
March 23, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28331996/use-of-complementary-and-integrative-medicine-among-german-breast-cancer-patients-predictors-and-implications-for-patient-care-within-the-praegnant-study-network
#17
Carlo Fremd, Carolin C Hack, Andreas Schneeweiss, Geraldine Rauch, Diethelm Wallwiener, Sara Yvonne Brucker, Florin-Andrei Taran, Andreas Hartkopf, Friedrich Overkamp, Hans Tesch, Tanja Fehm, Peyman Hadji, Wolfgang Janni, Diana Lüftner, Michael P Lux, Volkmar Müller, Johannes Ettl, Erik Belleville, Christof Sohn, Florian Schuetz, Matthias M Beckmann, Peter A Fasching, Markus Wallwiener
PURPOSE: The present study aims to analyze a cohort of advanced breast cancer patients in Germany to assess their interest in complementary and alternative medicine (CAM) and patient's use of most frequent CAM methods. PATIENTS AND METHODS: Based on the PREGNANT real-time breast cancer registry which is a multicenter study in Germany, questionnaires of 580 patients with advanced breast cancer were evaluated. The implemented questionnaire for CAM asked for general interest in CAM and for patient's use of different CAM methods at present and in the past...
March 22, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/28331419/falsely-elevated-serum-vitamin-b12-levels-were-associated-with-the-severity-and-prognosis-of-chronic-viral-liver-disease
#18
Takaaki Sugihara, Masahiko Koda, Toshiaki Okamoto, Kenichi Miyoshi, Tomomitsu Matono, Kenji Oyama, Keiko Hosho, Jun-Ichi Okano, Hajime Isomoto, Yoshikazu Murawaki
BACKGROUND: Vitamin B12 is stored primarily in the liver, and highly elevated serum vitamin B12 levels occur in acute hepatitis and severe alcoholic liver disease. We evaluated the relationship between vitamin B12 levels and liver disease severity and long term prognosis in patients with chronic viral hepatitis and cirrhosis. METHODS: We enrolled 90 patients (57 men, 33 women) with chronic viral hepatitis and cirrhosis who admitted to our hospital as a prospective cohort study...
March 2017: Yonago Acta Medica
https://www.readbyqxmd.com/read/28327908/predicted-vitamin-d-status-and-colon-cancer-recurrence-and-mortality-in-calgb-89803-alliance
#19
M A Fuchs, C Yuan, K Sato, D Niedzwiecki, X Ye, L B Saltz, R J Mayer, R B Mowat, R Whittom, A Hantel, A Benson, D Atienza, M Messino, H Kindler, A Venook, F Innocenti, R S Warren, M M Bertagnolli, S Ogino, E L Giovannucci, E Horvath, J A Meyerhardt, K Ng
Background: HASH(0x50ab298) Observational studies suggest that higher levels of 25-hydroxyvitamin D 3 (25(OH)D) are associated with a reduced risk of colorectal cancer and improved survival of colorectal cancer patients. However, the influence of vitamin D status on cancer recurrence and survival of patients with stage III colon cancer is unknown. Patients and methods: HASH(0x42029a0) We prospectively examined the influence of post-diagnosis predicted plasma 25(OH)D on outcome among 1,016 patients with stage III colon cancer who were enrolled in a National Cancer Institute-sponsored adjuvant therapy trial (CALGB 89803)...
March 15, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28327618/the-transcriptional-repressor-hic1-regulates-intestinal-immune-homeostasis
#20
K Burrows, F Antignano, M Bramhall, A Chenery, S Scheer, V Korinek, T M Underhill, C Zaph
The intestine is a unique immune environment that must respond to infectious organisms but remain tolerant to commensal microbes and food antigens. However, the molecular mechanisms that regulate immune cell function in the intestine remain unclear. Here we identify the POK/ZBTB family transcription factor hypermethylated in cancer 1 (HIC1, ZBTB29) as a central component of immunity and inflammation in the intestine. HIC1 is specifically expressed in immune cells in the intestinal lamina propria (LP) in the steady state and mice with a T-cell-specific deletion of HIC1 have reduced numbers of T cells in the LP...
March 22, 2017: Mucosal Immunology
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