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Friday, April 15, 2016

All About #CurableVitamins: The effects of Vitamin C On Endometrial Cancer

Kyle J. Norton(Scholar, Master of Nutrients), all right reserved.
Health article writer and researcher; Over 10.000 articles and research papers have been written and published on line, including world wide health, ezine articles, article base, healthblogs, selfgrowth, best before it's news, the karate GB daily, etc.,.
Named TOP 50 MEDICAL ESSAYS FOR ARTISTS & AUTHORS TO READ by Named 50 of the best health Tweeters Canada - Huffington Post
Nominated for shorty award over last 4 years
Some articles have been used as references in medical research, such as international journal Pharma and Bio science, ISSN 0975-6299.
Vitamins are organic compounds and vital nutrients needed by your body to grow and develop in a profound way.

Vitamin C
Vitamin C, also known as L-ascorbate is a water soluble vitamin with a chemical structure formula of C6H6O6 and cannot be stored in the body for more than 24 hours. It is also best known for it's antioxidant property in strengthening the immune system.

      The Effect of Vitamin C on Endometrial Cancer

Epidemiological studies, linking vitamin C in reduced risk and treatment of endometrial cancer have been inclusive(1)(2).
Vitamin C, also known as L-ascorbic acid, is a water-soluble vitamin, found in fresh fruits, berries and green vegetables. It is best known for its free radical scavengers activity and regenerating oxidized vitamin E for immune support.
The incidence of endometrial cancer among white women are higher in comparison of black. According to the statistic, the risk of endometrial cancer among women is 1 in 7000. Every year, about 40,000 women in US are diagnosed with the disease. Women who carry certain mutation genes, such as BRCA1 or the BRCA2 are associated to increased risk of endometrial cancer.

The University of Otago, may have found a link of low ascorbate levels and increased activation of the HIF-1 pathway to endometrial cancer. Women who were diagnosed with endometrial cancer with low levels of ascorbate were found to have a elevated VEGF(a signal protein produced by cells that stimulates vasculogenesis and angiogenesis), GLUT-1(Expression levels of GLUT1 in cell membranes are increased by reduced glucose levels and decreased by increased glucose levels), and BNIP3(a potent inducer of autophagy in many cells) protein levels and with increased tumor size(3). Reactive oxygen species(ROS) are responsible for proteasome inhibitor-induced cell killing, vitamin C is found to inhibit cell death through blocking the triggering proteasome inhibition(4). A combination including riboflavin, niacin and ascorbic acid, caused a significant decrease in the activity of glycolytic enzymes and a significant increase in the activities of gluconeogenic enzymes to near normal levels in experimental animals and may be considered as potential agent against tamoxifen mediated secondary endometrial carcinoma(5) and intake of vitamin C is associated to reduced risk of
endometrial cancer(6).
In secondary endometrial carcinoma bearing rat, the combination of riboflavin, niacin and ascorbic acid exhibited their effects against tamoxifen mediatedendometrial carcinoma, through a significant decrease in the activity of glycolytic enzymes(promoting continuous transport of glucose into the cell)(7). In a cultured human endometrial adenocarcinoma (AN3CA) cells, another combination of application of sodium ascorbate (Vitamin C) and 2-methyl-1,4-naphthoquinone (Vitamin K3) stimulated cytotoxicity through the formation of reactive oxygen radicals, possibly accentuated by less defined secondary mechanisms(8). the study of the composition of ascorbic acid, pyruvic acid and the activity of malate dehydrogenase decarboxylizing (MDHD), also showed the increased reduced form of ascorbic and pyruvic acid in malignant growth(9).

Taking altogether, the combination of vitamin C and others may be associated to reduced risk and treatment of endometrial cancer through inhibition of cell cycle, and other mechanisms. Daily ingestion of high-dose vitamin C may be considered safe, but in rare incidence, overdoses in a prolonged period of time, may cause intra-renal oxalate crystal deposition, a fatal nephrotoxicity(10)(11).

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(1) Risk of endometrial cancer in relation to individual nutrients from diet and supplements by Biel RK1, Csizmadi I, Cook LS, Courneya KS, Magliocco AM, Friedenreich CM.(PubMed)
(2) Nutritional factors in relation to endometrial cancer: a report from a population-based case-control study in Shanghai, China by Xu WH1, Dai Q, Xiang YB, Zhao GM, Ruan ZX, Cheng JR, Zheng W, Shu XO.(PubMed)
(3) Low ascorbate levels are associated with increased hypoxia-inducible factor-1 activity and an aggressive tumor phenotype in endometrial cancer by Kuiper C1, Molenaar IG, Dachs GU, Currie MJ, Sykes PH, Vissers MC(PubMed))
(4) Antioxidants block proteasome inhibitor function in endometrial carcinoma cells by Llobet D1, Eritja N, Encinas M, Sorolla A, Yeramian A, Schoenenberger JA, Llombart-Cussac A, Marti RM, Matias-Guiu X, Dolcet X.(PubMed)
(5) Therapeutic potential of riboflavin, niacin and ascorbic acid on carbohydrate metabolizing enzymes in secondary endometrial carcinoma bearing rats by Sundravel S1, Shanthi P, Sachdanandam P.(PubMed)
(6) Antioxidant vitamins and the risk of endometrial cancer: a dose-response meta-analysis.

Bandera EV1, Gifkins DM, Moore DF, McCullough ML, Kushi LH(PubMed)
(7) Therapeutic potential of riboflavin, niacin and ascorbic acid on carbohydrate metabolizing enzymes in secondary endometrial carcinoma bearing rats by Sundravel S1, Shanthi P, Sachdanandam P.(PubMed)
(8) Effects of sodium ascorbate (vitamin C) and 2-methyl-1,4-naphthoquinone (vitamin K3) treatment on human tumor cell growth in vitro. II. Synergism with combined chemotherapy action by De Loecker W1, Janssens J, Bonte J, Taper HS.(PubMed)
(9) [Ascorbic, keto and hydroxy acid metabolism in the cell nuclei of certain tumors].[Article in Russian] by Romanovich EA, Basieva FI.(PubMed)
(10) Fatal vitamin C-associated acute renal failure by McHugh GJ, Graber ML, Freebairn RC.(PubMed)

(11) Ascorbic acid overdosing: a risk factor for calcium oxalate nephrolithiasis by Urivetzky M, Kessaris D, Smith AD.(PubMed)

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