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https://www.readbyqxmd.com/read/29783781/nutraceuticals-in-periodontal-health-a-systematic-review-on-the-role-of-vitamins-in-periodontal-health-maintenance
#1
REVIEW
Alfonso Varela-López, María D Navarro-Hortal, Francesca Giampieri, Pedro Bullón, Maurizio Battino, José L Quiles
Periodontal disease, a relevant public health problem worldwide, is generally considered a common pathology of elderly people. In this respect, there is agreement about that nutritional status may be a modifying factor in the progression and healing of the periodontal tissues. Vitamins have been recommended as nutraceuticals for prevention and treatment of some pathological conditions, such as cardiovascular diseases, obesity or cancer. Thus, a systematic approach to determining how the different vitamin type could ameliorate periodontal risks or improve periodontal health is necessary to further the understanding of the potential benefits and risks of vitamins supplementation use...
May 20, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29773172/seleno-l-methionine-and-l-ascorbic-acid-differentiate-the-biological-activity-of-doxorubicin-and-its-metal-complexes-as-a-new-anticancer-drugs-candidate
#2
Marzena Matejczyk, Grzegorz Świderski, Renata Świsłocka, Stanisław Józef Rosochacki, Włodzimierz Lewandowski
The most important problems of anti-cancer therapy include the toxicity of the drugs applied to healthy cells and the multi-drug cells resistance to chemotherapeutics. One of the most commonly used anticancer drugs is doxorubicin (DOX) used to treat certain leukemias and non-Hodgkin's lymphomas, as well as bladder, breast, stomach, lung, ovarian, thyroid, multiple myeloma and other cancers. Preliminary studies showed that metal complex with DOX improve its cytostatic activity with changes in their molecular structure and distribution of electrons, resulting in a substantial change of its biological activity (including antitumor activity)...
July 2018: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/29770585/exploring-the-effect-of-vitamin-e-in-cancer-chemotherapy-a-biochemical-and-biophysical-insight
#3
Mustansir Bhori, Kanchanlata Singh, Thankamani Marar, C MuraliKrishna
Many oncologists contend that patient undergoing chemotherapy must avoid antioxidant supplementation as it may interfere with the activity of the drug. In the present investigation, we have explored the influence of vitamin E, a well known antioxidant on Camptothecin (CPT), a potent anti-cancer drug induced cell apoptosis and death of cervical cancer cells. HeLa cells were treated with different concentrations of CPT in presence and absence of 100μm vitamin E. Treated cells were subjected to cytotoxicity studies, catalase assay, DNA fragmentation assay, clonogenic assay and flow cytometry based apoptosis detection...
May 16, 2018: Journal of Biophotonics
https://www.readbyqxmd.com/read/29738492/anthropometric-and-dietary-factors-as-predictors-of-dna-damage-in-obese-women
#4
Marta Włodarczyk, Beata Jabłonowska-Lietz, Wioletta Olejarz, Grażyna Nowicka
Enhanced DNA damage and disturbances in DNA repair mechanisms are reported to be involved in the pathogenesis of chronic diseases like obesity, atherosclerosis, metabolic syndrome, diabetes, and cancer. The aim of the present study was to evaluate whether anthropometric factors and dietary habits are related to endogenous DNA damage. One hundred and fourteen premenopausal, apparently healthy women were included in the study: 88 obese individuals and 26 controls. The comet assay was used to measure basal DNA damage...
May 8, 2018: Nutrients
https://www.readbyqxmd.com/read/29736388/aqueous-extract-of-carica-papaya-linn-roots-potentially-attenuates-arsenic-induced-biochemical-and-genotoxic-effects-in-wistar-rats
#5
Oluwafemi Adeleke Ojo, Adebola Busola Ojo, Olayinka Awoyinka, Basiru Olaitan Ajiboye, Babatunji Emmanuel Oyinloye, Olukemi Adetutu Osukoya, Israel Idowu Olayide, Adejoke Ibitayo
In Africa, the fruit, leaf, seed and roots of Carica papaya Linn. are generally used to treat a variety of diseases such as malaria, cancer, and cardiovascular diseases. In this study, we evaluated the protective potentials of aqueous extract of C. papaya roots on arsenic-induced biochemical and genotoxic effects in Wistar rats. Rats were induced intraperitoneal with sodium arsenate (dissolved in distilled water at 3 mg/kg body weight) for 21 days and the animals were administered simultaneously with 200 mg/kg body weight vitamin C, 100 and 150 mg/kg body weight of the C...
April 2018: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/29733645/aromatic-based-design-of-highly-active-and-noncalcemic-vitamin-d-receptor-agonists
#6
Pranjal Gogoi, Samuel Seoane, Rita Sigueiro, Thierry Guiberteau, Miguel A Maestro, Roman Perez-Fernandez, Natacha Rochel, Antonio Mouriño
1We report the design, synthesis, biological evaluation and structural analysis of a new class of vitamin D analogs that possess an aromatic m-phenylene D-ring and an alkyl chain replacing the C-ring. A key feature of the synthetic strategy is a stereoselective Pd-catalyzed construction of the triene system in aqueous medium that allows the rapid preparation of small amounts of VDR ligands for biological screening. Analogs with the shorter (2a) and longer (2d, 2e) side chains attached to the triene system have no calcemic activity...
May 7, 2018: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29726119/inverse-association-of-vitamin-d-3-levels-with-lung-cancer-mediated-by-genetic-variation
#7
Majda Haznadar, Kristopher W Krausz, Ezra Margono, Christopher M Diehl, Elise D Bowman, Soumen Kanti Manna, Ana I Robles, Bríd M Ryan, Frank J Gonzalez, Curtis C Harris
Vitamin D is an essential micronutrient required for normal physiological function and recognized for its role regulating calcium metabolism. Recent work is beginning to emerge demonstrating a role for vitamin D in chronic illnesses, such as cancer. Circulating serum levels of 25(OH)D2/3 were quantitatively measured using sensitive ultraperformance liquid chromatography coupled to tandem mass spectrometry (UPLC-MS/MS) in 406 lung cancer cases and 437 population controls, while 1,25(OH)2 D2/3 levels were measured in a subset of 90 cases and 104 controls using the same method, from the NCI-MD case-control cohort...
May 3, 2018: Cancer Medicine
https://www.readbyqxmd.com/read/29724526/vitamin-c-in-stem-cell-reprogramming-and-cancer
#8
REVIEW
Luisa Cimmino, Benjamin G Neel, Iannis Aifantis
Vitamin C is an essential dietary requirement for humans. In addition to its known role as an antioxidant, vitamin C is a cofactor for Fe2+ - and α-ketoglutarate-dependent dioxygenases (Fe2+ /α-KGDDs) which comprise a large number of diverse enzymes, including collagen prolyl hydroxylases and epigenetic regulators of histone and DNA methylation. Vitamin C can modulate embryonic stem cell (ESC) function, enhance reprogramming of fibroblasts to induced pluripotent stem cells (iPSCs), and hinder the aberrant self-renewal of hematopoietic stem cells (HSCs) through its ability to enhance the activity of either Jumonji C (JmjC) domain-containing histone demethylases or ten-eleven translocation (TET) DNA hydroxylases...
April 30, 2018: Trends in Cell Biology
https://www.readbyqxmd.com/read/29722878/global-dna-methylation-synergistically-regulates-the-nuclear-and-mitochondrial-genomes-in-glioblastoma-cells
#9
Xin Sun, Jacqueline Johnson, Justin C St John
Replication of mitochondrial DNA is strictly regulated during differentiation and development allowing each cell type to acquire its required mtDNA copy number to meet its specific needs for energy. Undifferentiated cells establish the mtDNA set point, which provides low numbers of mtDNA copy but sufficient template for replication once cells commit to specific lineages. However, cancer cells, such as those from the human glioblastoma multiforme cell line, HSR-GBM1, cannot complete differentiation as they fail to enforce the mtDNA set point and are trapped in a 'pseudo-differentiated' state...
May 2, 2018: Nucleic Acids Research
https://www.readbyqxmd.com/read/29720370/association-of-25-hydroxyvitamin-d-with-liver-cancer-incidence-and-chronic-liver-disease-mortality-in-finnish-male-smokers-of-the-atbc-study
#10
Gabriel Y Lai, Jian-Bing Wang, Stephanie J Weinstein, Dominick Parisi, Ronald L Horst, Katherine A McGlynn, Satu Männistö, Demetrius Albanes, Neal D Freedman
BACKGROUND: Although circulating 25-hydroxyvitamin D [25(OH)D] concentrations were linked to liver cancer and chronic liver disease (CLD) in laboratory studies, few epidemiologic studies have addressed the associations. METHODS: Within the ATBC Study, we measured 25(OH)D in baseline serum of 202 incident liver cancer cases and 225 CLD deaths that occurred during nearly 25 years of follow-up, and 427 controls. Odds ratios (ORs) and 95% confidence intervals (CIs) were estimated using unconditional logistic regression...
May 2, 2018: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/29719430/intravenous-vitamin-c-in-the-supportive-care-of-cancer-patients-a-review-and-rational-approach
#11
REVIEW
E Klimant, H Wright, D Rubin, D Seely, M Markman
This article reviews intravenous vitamin C (IV C) in cancer care and offers a rational approach to enable medical oncologists and integrative practitioners to safely provide IV C combined with oral vitamin C to patients. The use of IV C is a safe supportive intervention to decrease inflammation in the patient and to improve symptoms related to antioxidant deficiency, disease processes, and side effects of standard cancer treatments. A proposed rationale, together with relevant clinical safety considerations for the application of IV C in oncologic supportive care, is provided...
April 2018: Current Oncology
https://www.readbyqxmd.com/read/29716928/dairy-consumption-in-adolescence-and-early-adulthood-and-risk-of-breast-cancer
#12
Maryam S Farvid, A Heather Eliassen, Eunyoung Cho, Wendy Y Chen, Walter C Willett
Background: Carcinogenic exposure in early life may be critical for subsequent breast cancer risk. Dairy consumption was examined during adolescence and early adulthood in relation to incident breast cancer in the Nurses' Health Study II cohort. Methods: For the analyses of early adulthood dairy consumption, we included 90,503 premenopausal women ages 27 to 44 years in 1991 who reported dairy consumption using a validated food-frequency questionnaire. From 1991 to 2013, 3,191 invasive breast cancer cases were identified...
May 2018: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/29716592/pollution-and-respiratory-disease-can-diet-or-supplements-help-a-review
#13
REVIEW
T Whyand, J R Hurst, M Beckles, M E Caplin
Pollution is known to cause and exacerbate a number of chronic respiratory diseases. The World Health Organisation has placed air pollution as the world's largest environmental health risk factor. There has been recent publicity about the role for diet and anti-oxidants in mitigating the effects of pollution, and this review assesses the evidence for alterations in diet, including vitamin supplementation in abrogating the effects of pollution on asthma and other chronic respiratory diseases. We found evidence to suggest that carotenoids, vitamin D and vitamin E help protect against pollution damage which can trigger asthma, COPD and lung cancer initiation...
May 2, 2018: Respiratory Research
https://www.readbyqxmd.com/read/29707142/-pik3ca-mutation-reduced-akt-serine-473-phosphorylation-and-increased-er%C3%AE-serine-167-phosphorylation-are-positive-prognostic-indicators-in-postmenopausal-estrogen-receptor-positive-early-breast-cancer
#14
Naoko Ishida, Motoi Baba, Yutaka Hatanaka, Kanako Hagio, Hiromi Okada, Kanako C Hatanaka, Kenichi Togashi, Yoshihiro Matsuno, Hiroko Yamashita
Although endocrine therapy is the most important treatment option in estrogen receptor (ER)-positive breast cancer, new strategies, such as molecular targeted agents together with endocrine therapy are required to improve survival. PIK3CA is the most frequent mutated gene in ER-positive early breast cancers, and PIK3CA mutation status is reported to affect activation of AKT and ERα. Moreover, recent studies demonstrate that patients had a better prognosis when tumors expressed ER, androgen receptor (AR), and vitamin D receptor (VDR)...
April 3, 2018: Oncotarget
https://www.readbyqxmd.com/read/29696360/randomized-phase-2-study-of-gemcitabine-and-cisplatin-with-or-without-vitamin-supplementation-in-patients-with-advanced-esophagogastric-cancer
#15
A A van Zweeden, C J van Groeningen, R J Honeywell, E Giovannetti, R Ruijter, C H Smorenburg, G Giaccone, H M W Verheul, G J Peters, Hans J van der Vliet
PURPOSE: Preclinical research and prior clinical observations demonstrated reduced toxicity and suggested enhanced efficacy of cisplatin due to folic acid and vitamin B12 suppletion. In this randomized phase 2 trial, we evaluated the addition of folic acid and vitamin B12 to first-line palliative cisplatin and gemcitabine in patients with advanced esophagogastric cancer (AEGC). METHODS: Patients with AEGC were randomized to gemcitabine 1250 mg/m2 (i.v. days 1, 8) and cisplatin 80 mg/m2 (i...
April 25, 2018: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/29691848/children-sustain-high-levels-of-skin-dna-photodamage-with-a-modest-increase-of-serum-25-oh-d-3-after-a-summer-holiday-in-northern-europe
#16
J Narbutt, P A Philipsen, A Lesiak, T Sandberg Liljendahl, D Segerbäck, J Heydenreich, D Chlebna-Sokol, P Olsen, G I Harrison, A Pearson, K Baczynska, M Rogowski-Tylman, H C Wulf, A R Young
BACKGROUND: Childhood solar ultraviolet radiation (UVR) exposure increases the risk of skin cancer in adulthood, which is associated with mutations caused by UVR-induced cyclobutane pyrimidine dimers (CPD). Solar UVR is also the main source of vitamin D, essential for healthy bone development in children. OBJECTIVES: The impact of a 12-day Baltic Sea (54o N) beach holiday on serum 25-dihydroxyvitamin D (25(OH)D3 ) and CPD was assessed in 32 healthy Polish children (skin types I-IV)...
April 24, 2018: British Journal of Dermatology
https://www.readbyqxmd.com/read/29683475/pharmacological-interventions-for-the-prevention-of-insufficiency-fractures-and-avascular-necrosis-associated-with-pelvic-radiotherapy-in-adults
#17
REVIEW
Qurrat U van den Blink, Kate Garcez, Caroline C Henson, Susan E Davidson, Claire E Higham
BACKGROUND: Pelvic radiotherapy is a treatment delivered to an estimated 150,000 to 300,000 people annually across high-income countries. Fractures due to normal stresses on weakened bone due to radiotherapy are termed insufficiency fractures. Pelvic radiotherapy-related interruption of the blood supply to the hip is termed avascular necrosis and is another recognised complication. The reported incidences of insufficiency fractures are 2.7% to 89% and risk of developing avascular necrosis is 0...
April 23, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29677308/vitamin-d-calcium-or-combined-supplementation-for-the-primary-prevention-of-fractures-in-community-dwelling-adults-evidence-report-and-systematic-review-for-the-us-preventive-services-task-force
#18
REVIEW
Leila C Kahwati, Rachel Palmieri Weber, Huiling Pan, Margaret Gourlay, Erin LeBlanc, Manny Coker-Schwimmer, Meera Viswanathan
Importance: Osteoporotic fractures result in significant morbidity and mortality. Objective: To update the evidence for benefits and harms of vitamin D, calcium, or combined supplementation for the primary prevention of fractures in community-dwelling adults to inform the US Preventive Services Task Force. Data Sources: PubMed, EMBASE, Cochrane Library, and trial registries through March 21, 2017; references; and experts. Surveillance continued through February 28, 2018...
April 17, 2018: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/29656218/improved-hypocrellin-a-production-in-shiraia-bambusicola-by-light-dark-shift
#19
Chun Xiao Sun, Yan Jun Ma, Jian Wen Wang
Hypocrellin A (HA) is a major bioactive perylenequinone from the fruiting body of Shiraia bambusicola used for the treatment of skin diseases and developed as a photodynamic therapy (PDT) agent against cancers and viruses. The mycelial culture of S. bambusicola under dark is a biotechnological alternative for HA production but with low yield. In this study, light and dark conditions were investigated to develop effective elicitation on HA production in the cultures. Our results showed the constant light at 200 lx stimulated HA production without any growth retardation of mycelia...
April 9, 2018: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29629026/effect-of-vitamin-c-on-azoxymethane-aom-dextran-sulfate-sodium-dss-induced-colitis-associated-early-colon-cancer-in-mice
#20
Hee-Jin Jeon, Yiseul Yeom, Yoo-Sun Kim, Eunju Kim, Jae-Ho Shin, Pu Reum Seok, Moon Jea Woo, Yuri Kim
BACKGROUND/OBJECTIVES: The objective of this study was to investigate the effects of vitamin C on inflammation, tumor development, and dysbiosis of intestinal microbiota in an azoxymethane (AOM)/dextran sulfate sodium (DSS)-induced inflammation-associated early colon cancer mouse model. MATERIALS/METHODS: Male BALB/c mice were injected intraperitoneally with AOM [10 mg/kg body weight (b.w)] and given two 7-d cycles of 2% DSS drinking water with a 14 d inter-cycle interval...
April 2018: Nutrition Research and Practice
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