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https://www.readbyqxmd.com/read/29458163/dna-adduct-profiling-of-in-vitro-colonic-meat-digests-to-map-red-vs-white-meat-genotoxicity
#1
Lieselot Y Hemeryck, Caroline Rombouts, Ellen De Paepe, Lynn Vanhaecke
The consumption of red meat has been linked to an increased colorectal cancer (CRC) risk. One of the major hypotheses states that heme iron (present in red meat) stimulates the formation of genotoxic N-nitroso compounds (NOCs) and lipid peroxidation products (LPOs). By means of DNA adductomics, chemically induced DNA adduct formation can be mapped in relation to e.g. dietary exposures. In this study, this state-of-the-art methodology was used to investigate alkylation and (lipid per)oxidation induced DNA adduct formation in in vitro red vs...
February 16, 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29438474/lifestyle-factors-and-risk-of-sporadic-colorectal-cancer-by-microsatellite-instability-status-a-systematic-review-and-meta-analyses
#2
P R Carr, E Alwers, S Bienert, J Weberpals, M Kloor, H Brenner, M Hoffmeister
Introduction: The association of lifestyle factors with molecular pathological subtypes of colorectal cancer (CRC), such as microsatellite instability (MSI), could provide further knowledge about the colorectal carcinogenic process. The aim of this review was to evaluate possible associations between lifestyle factors and risk of sporadic CRC by MSI status. Methods: PubMed and Web of Science were searched for studies investigating the association between alcohol, body mass index (BMI), dietary fiber, hormone replacement therapy (HRT), non-steroidal anti-inflammatory drugs (NSAIDs), physical activity, red meat, smoking, or statin use, with MSI-high (MSI-H) and microsatellite stable (MSS) CRC...
February 9, 2018: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29434270/expression-and-replication-of-virus-like-circular-dna-in-human-cells
#3
Sebastian Eilebrecht, Agnes Hotz-Wagenblatt, Victor Sarachaga, Amelie Burk, Konstantina Falida, Deblina Chakraborty, Ekaterina Nikitina, Claudia Tessmer, Corinna Whitley, Charlotte Sauerland, Karin Gunst, Imke Grewe, Timo Bund
The consumption of bovine milk and meat is considered a risk factor for colon- and breast cancer formation, and milk consumption has also been implicated in an increased risk for developing Multiple Sclerosis (MS). A number of highly related virus-like DNAs have been recently isolated from bovine milk and sera and from a brain sample of a MS patient. As a genetic activity of these Acinetobacter-related bovine milk and meat factors (BMMFs) is unknown in eukaryotes, we analyzed their expression and replication potential in human HEK293TT cells...
February 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29433825/risk-factors-for-prostate-cancer-a-multifactorial-case-control-study
#4
Saima Shakil Malik, Rakshanda Batool, Nosheen Masood, Azra Yasmin
Prostate cancer is the third most commonly diagnosed cancer among Pakistani men. It is a multifactorial disease involving genetics together with environmental factors. Countries where men have greater dietary fat intake showed increased prostate cancer mortality rates. A population based case-control study was conducted to evaluate various prostate cancer risk factors. Study subjects were 896 prostate cancer cases (2010-2015) and 900 age matched controls. Odds ratio (OR) and 95% CI were used to estimate the association between different risk factors and prostate cancer...
February 9, 2018: Current Problems in Cancer
https://www.readbyqxmd.com/read/29433784/do-cancer-patients-change-their-diet-in-the-e-health-information-era-a-review-of-the-literature-and-a-survey-as-a-proposal-for-the-italian-population
#5
F Ghelfi, M Tieri, S Gori, F Nicolis, M C Petrella, A Filiberti, G Apolone, L Titta
In recent years, there has been an explosion in the amount of available information on cancer in parallel with an ever-increasing number of cancer survivors. Cancer patients and long-term survivors are known to be more sensitive to health-related information and dietary changes could represent a potential consequence of this huge availability of messages. In our review about dietary changes after cancer diagnosis, we found that this topic is particularly investigated among the breast cancer population. The literature examined show that breast cancer patients modify their eating habits after diagnosis in a percentage that varies between approximately 30% and 60%...
February 2018: Food Research International
https://www.readbyqxmd.com/read/29433780/nutritional-enhancement-of-sheep-meat-fatty-acid-profile-for-human-health-and-wellbeing
#6
Obert C Chikwanha, Payam Vahmani, Voster Muchenje, Michael E R Dugan, Cletos Mapiye
Dietary fatty acids (FA) consumed by sheep, like other ruminants, can undergo biohydrogenation resulting in high proportions of saturated FA (SFA) in meat. Biohydrogenation is typically less extensive in sheep than cattle, and consequently, sheep meat can contain higher proportions of omega (n)-3 polyunsaturated FA (PUFA), and PUFA biohydrogenation intermediates (PUFA-BHI) including conjugated linoleic acid (CLA) and trans-monounsaturated FAs (t-MUFA). Sheep meat is also noted for having characteristically higher contents of branched chain FA (BCFA)...
February 2018: Food Research International
https://www.readbyqxmd.com/read/29421751/veterinary-drug-17%C3%AE-trenbolone-promotes-the-proliferation-of-human-prostate-cancer-cell-line-through-the-akt-ar-signaling-pathway
#7
Hee-Seok Lee, Da-Woon Jung, Songyi Han, Hui-Seung Kang, Jin-Hyang Suh, Hyun-Suk Oh, Myung-Sil Hwang, Guiim Moon, Yooheon Park, Jin-Hwan Hong, Yong Eui Koo
Trenbolone acetate (TBA) is a synthetic anabolic steroidal growth factor that is used for rapid muscle development in cattle. The absorbed TBA is hydrolyzed to the active form, 17β-trenbolone (17 TB; 17β-hydroxy-estra-4,9,11-trien-3-one) in meat and milk products, which can cause adverse health effects in humans. Similar to 5α-dihydrotestosterone (DHT), 17 TB was reported to exhibit endocrine disrupting effects on animals and humans due to its androgenic effect via binding to the androgen receptor. The purpose of this study is to investigate the molecular mechanism of cell proliferation in prostate cancer (PCa) cells treated with 17 TB...
February 3, 2018: Chemosphere
https://www.readbyqxmd.com/read/29399003/dietary-patterns-and-colorectal-cancer-risk-a-review-of-17-years-of-evidence-2000-2016
#8
Fred K Tabung, Lisa S Brown, Teresa T Fung
Purpose of review: Colorectal cancer (CRC) is a global public health problem, with an estimated 1.4 million cases diagnosed worldwide in 2012. Evidence suggests that diet may be important for primary prevention. Recent findings: The 2017 WCRF/AICR Continuous Update Project on colorectal cancer concluded that there is convincing evidence linking several individual dietary factors with CRC risk but the evidence for dietary patterns was limited and inconclusive. Also, previous reviews and meta-analyses have not critically synthesized various dietary patterns...
December 2017: Current Colorectal Cancer Reports
https://www.readbyqxmd.com/read/29397007/commentary-iarc-monographs-program-and-public-health-under-siege-by-corporate-interests
#9
Peter F Infante, Ronald Melnick, Harri Vainio, James Huff
The International Agency for Research on Cancer (IARC) evaluates causes of cancer with help from independent international experts in an open and transparent manner. Countries, research and regulatory agencies, and other organizations adopt IARC evaluations for communication of human cancer hazards, and for strategies to prevent cancer. Scientists worldwide endorse IARC cancer evaluations and process. Those with economic interests, however, challenge IARC's cancer evaluations, most recently for glyphosate and red and processed meats, and are conducting a campaign including intervention from US Congressional Representatives to discredit IARC's review process and to undermine financial support-a campaign intimidating to IARC and Working Group members...
February 3, 2018: American Journal of Industrial Medicine
https://www.readbyqxmd.com/read/29378243/alterations-in-the-nigrostriatal-dopamine-system-after-acute-systemic-phip-exposure
#10
Zeynep Sena Agim, Jason R Cannon
Heterocyclic amines (HCAs) are primarily formed during cooking of meat at high temperature. HCAs have been extensively studied as mutagens and possible carcinogens. Emerging data suggest that HCAs are neurotoxic and may be relevant to Parkinson's disease (PD) etiology. However, the majority of HCAs have not been evaluated for in vivo neurotoxicity. Here, we investigated acute in vivo neurotoxicity of 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP). PhIP is the most prevalent genotoxin in many meats. Adult, male Sprague-Dawley rats were subjected to acute, systemic PhIP at doses and time-points that have been extensively utilized in cancer studies (100 and 200 mg/kg for 8, 24 h) and evaluated for changes in dopaminergic, serotoninergic, GABAergic, and glutamatergic neurotransmission...
January 26, 2018: Toxicology Letters
https://www.readbyqxmd.com/read/29374412/lack-of-association-between-red-meat-consumption-and-a-positive-fecal-immunochemical-colorectal-cancer-screening-test-in-khon-kaen-thailand-a-population-based-randomized-controlled-trial
#11
Putthikrai Pramual, Pongdech Sarakarn, Siriporn Kamsa-ard, Chananya Jirapornkul, Naowarat Maneenin, Prasert Thavondunstid, Prachak Juntarach, Supannee Promthet
Background: There is convincing evidence from epidemiological studies that meat consumption increases colorectal cancer (CRC) risk. However, assessment of any association with a positive fecal immunochemical test (FIT) in CRC screening has been limited. If a link could be shown this might be helpful for establishing a risk group for colonoscopy. Objective: This study aimed to assess any association between meat consumption and other lifestyle factors and a positive FIT result in a Thai population. Methods: A cross-sectional analytical study was conducted with 1,167 participants in a population-based randomized controlled trial...
January 27, 2018: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/29371880/dissecting-the-mechanisms-and-molecules-underlying-the-potential-carcinogenicity-of-red-and-processed-meat-in-colorectal-cancer-crc-an-overview-on-the-current-state-of-knowledge
#12
REVIEW
Marco Cascella, Sabrina Bimonte, Antonio Barbieri, Vitale Del Vecchio, Domenico Caliendo, Vincenzo Schiavone, Roberta Fusco, Vincenza Granata, Claudio Arra, Arturo Cuomo
Meat is a crucial nutrient for human health since it represents a giant supply of proteins, minerals, and vitamins. On the opposite hand, the intake of red and processed meat is taken into account dangerous due to its potential of carcinogenesis and cancer risk improvement, particularly for colorectal cancer (CRC), although it has been reported that also the contaminations of beef infected by oncogenic bovine viruses could increase colorectal cancer's risk. Regarding the mechanisms underlying the potential carcinogenicity of red and processed meat, different hypotheses have been proposed...
2018: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/29362861/ethanol-potentiates-the-genotoxicity-of-the-food-derived-mammary-carcinogen-phip-in-human-estrogen-receptor-positive-mammary-cells-mechanistic-support-for-lifestyle-factors-cooked-red-meat-and-ethanol-associated-with-mammary-cancer
#13
Durr-E-Shahwar Malik, Rhiannon M David, Nigel J Gooderham
Consumption of cooked/processed meat and ethanol are lifestyle risk factors in the aetiology of breast cancer. Cooking meat generates heterocyclic amines such as 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP). Epidemiology, mechanistic and animal studies indicate that PhIP is a mammary carcinogen that could be causally linked to breast cancer incidence; PhIP is DNA damaging, mutagenic and oestrogenic. PhIP toxicity involves cytochrome P450 (CYP1 family)-mediated metabolic activation to DNA-damaging species, and transcriptional responses through Aryl hydrocarbon receptor (AhR) and estrogen-receptor-α (ER-α)...
January 23, 2018: Archives of Toxicology
https://www.readbyqxmd.com/read/29360624/association-of-processed-food-synergistic-effect-of-alcohol-and-hbv-with-hepatocellular-carcinoma-in-a-high-incidence-region-of-india
#14
Rup Kumar Phukan, Biswa Jyoti Borkakoty, Sanjib Kumar Phukan, Kumar Bhandari, Jagdish Mahanta, Sopai Tawsik, Sangita Bhandari, Ashish Rai, Kanwar Narain
BACKGROUND: Dietary factors, tobacco, and alcohol use have been identified as important factors of rising various cancer incidence in several northeastern states of India. However, little is known about the factors associated with hepatocellular carcinoma (HCC) in this region. The aim of the paper was to identify the factors associated with HCC in the northeast region. METHODS: A case-control study was conducted in Arunachal Pradesh and Sikkim, two northeastern states of India, including 104 histologically-confirmed cases of HCC and same number (104) of age and sex matched control enrolled...
January 19, 2018: Cancer Epidemiology
https://www.readbyqxmd.com/read/29337342/polysaccharides-reduce-absorption-and-mutagenicity-of-3-amino-1-4-dimethyl-5h-pyrido-4-3-b-indole-in-vitro-and-in-vivo
#15
Lingying Luo, Yun Bai, Guanghong Zhou
3-Amino-1,4-dimethyl-5H-pyrido[4,3-b]indole (Trp-P-1) is a group 2B carcinogen characterized by the International Agency for Research on Cancer (IARC) and great efforts have been taken to reduce Trp-P-1 mutagenicity to humans. In this study, the effect of a reduction of Trp-P-1 on intestinal absorption as a promising strategy was investigated. The data showed that when 20 mM Trp-P-1 cotransported with 10 mM of sodium carboxymethyl cellulose (CMC), xanthan gum, or carrageenan, the absorption rate of Trp-P-1 was reduced by 31...
January 16, 2018: Journal of Food Science
https://www.readbyqxmd.com/read/29333614/the-effect-of-risk-factor-misclassification-on-the-partial-population-attributable-risk
#16
Benedict H W Wong, Sarah B Peskoe, Donna Spiegelman
The partial population attributable risk (pPAR) is used to quantify the population-level impact of preventive interventions in a multifactorial disease setting. In this paper, we consider the effect of nondifferential risk factor misclassification on the direction and magnitude of bias of pPAR estimands and related quantities. We found that the bias in the uncorrected pPAR depends nonlinearly and nonmonotonically on the sensitivities, specificities, relative risks, and joint prevalence of the exposure of interest and background risk factors, as well as the associations between these factors...
January 15, 2018: Statistics in Medicine
https://www.readbyqxmd.com/read/29333111/diet-gut-microbiota-and-colorectal-cancer-prevention-a-review-of-potential-mechanisms-and-promising-targets-for-future-research
#17
Mingyang Song, Andrew T Chan
Diet plays an important role in the development of colorectal cancer. Emerging data have implicated the gut microbiota in colorectal cancer. Diet is a major determinant for the gut microbial structure and function. Therefore, it has been hypothesized that alterations in gut microbes and their metabolites may contribute to the influence of diet on the development of colorectal cancer. We review several major dietary factors that have been linked to gut microbiota and colorectal cancer, including major dietary patterns, fiber, red meat and sulfur, and obesity...
December 2017: Current Colorectal Cancer Reports
https://www.readbyqxmd.com/read/29324583/an-explanatory-and-predictive-model-of-the-variation-in-esophageal-cancer-incidence-on-the-basis-of-changes-in-the-exposure-to-risk-factors
#18
Clara Castro, Bárbara Peleteiro, Samantha Morais, Milton Severo, Maria José Bento, Nuno Lunet
Variations in the exposure to risk factors may be used to explain past cancer trends and to predict its future burden. This study aimed to develop a model to describe and predict the variation of esophageal cancer incidence in 1995-2005, taking into account changes in exposures to risk factors. We adapted an existing model to calculate the expected variation in the number of esophageal cancer cases, between 1995 and 2005, in Australia, Japan, Italy, Portugal, the UK, and the USA, because of changes in exposures to risk factors, taking into account the corresponding lag times...
January 10, 2018: European Journal of Cancer Prevention
https://www.readbyqxmd.com/read/29321531/biopsy-needle-integrated-with-electrical-impedance-sensing-microelectrode-array-towards-real-time-needle-guidance-and-tissue-discrimination
#19
Jaeho Park, Won-Mook Choi, Kyuyoung Kim, Won-Il Jeong, Joon-Beom Seo, Inkyu Park
A biopsy needle with electrical impedance sensor array based on stainless steel microelectrodes (EIS needle) was developed for real-time four electrode measurement and multi-spot sensing of tissues during the biopsy process. The sensor performance was characterized by using saline solutions with various concentrations, which proved accurate, stable and reliable electrical impedance measurement. The capability of impedance-based tissue sensing was verified by the conductivity measurement of agarose hydrogel based phantom mimicking cancer tissue...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29304763/attributable-causes-of-colorectal-cancer-in-china
#20
Meng-Jia Gu, Qiu-Chi Huang, Cheng-Zhen Bao, Ying-Jun Li, Xiao-Qin Li, Ding Ye, Zhen-Hua Ye, Kun Chen, Jian-Bing Wang
BACKGROUND: Colorectal cancer is the 4th common cancer in China. Most colorectal cancers are due to modifiable lifestyle factors, but few studies have provided a systematic evidence-based assessment of the burden of colorectal cancer incidence and mortality attributable to the known risk factors in China. METHODS: We estimated the population attributable faction (PAF) for each selected risk factor in China, based on the prevalence of exposure around 2000 and relative risks from cohort studies and meta-analyses...
January 5, 2018: BMC Cancer
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