CONCEPTO DE AVITAMINOSIS PDF

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Neural tube defects and folic acid: a historical overview of a highly successful preventive intervention. This article gives a broad overview of part of the historical evolution of medical knowledge about neural tube defects NTD and the discovery of vitamin B9 or folic acid, as well as some relevant research events that, over the course of several centuries, defined the relationships between the understanding of central nervous system embryology, the discovery of the vitamin, the correlation between folic acid and cell proliferation and lastly the development of preventive measures for this type of defects.

This narrative allows us to examine historically relevant concepts underlying clinical actions with a populational impact that prevent NTDs via folic acid consumption prior to conception.

Estos factores accesorios fueron por primera vez llamados de vitaminas por Funk en En , Day indujo experimentalmente anemia y leucopenia en monos Rhesus, luego de alimentarlos con dietas carentes de vitamina B Day, Langston, Shukers, El factor de Wills fue posteriormente denominado folato, luego de ser aislado por Mitchell de las hojas de la espinaca en Clair et al.

Las mujeres aceptaron iniciar el consumo del suplemento o el placebo desde el momento en que ellas suspendieran las medidas anticonceptivas y continuar su consumo durante las primeras semanas del embarazo. En el grupo A: dos de y en el grupo B: cuatro de En el adulto es un marcador de tumores del saco vitelino, y carcinoma hepatocelular, entre otros. ABEL, Josef. Neural tube defects: British vitamin trial starts slowly. Nature, v. Synthesis of pteroylglutamic acid.

Journal of the American Chemical Society, v. Caspar Friedrich Wolff and his "Theoria generationis", Journal of the History of Medicine and Allied Sciences, v. Sailors' scurvy before and after James Lind-a reassessment. Nutrition Reviews, v. James Lind's Treatise of the scurvy Postgraduate Medical Journal, v. Emblematic monsters: unnatural conceptions and deformed births in early modern Europe. Amsterdam: Rodopi. Spina bifida: MRC folate trials to start at last.

Studies on normal and leukemic leukocytes. Tetrahydrofolate-dependent enzyme systems and dihydrofolic reductase. Journal of Clinical Investigation, v. Promotion of folate for the prevention of neural tube defects: who benefits? Paediatric and perinatal epidemiology, v. Accessory food factors: understanding the catalytic function. Journal of the History of Biology, v. Folic acid supplementation in pregnancy: are there devils in the detail?

The British Journal of Nutrition, v. Folic acid awareness and use among women with a history of a neural tube defect pregnancy: Texas, RR, p. Eijkman's contribution to the discovery of vitamins. Journal of Nutrition, v. Centers for Disease Control. Effectiveness in disease and injury prevention use of folic acid for prevention of spina bifida and other neural tube defects: MMWR Weekly, v.

Folate status and requirement in pregnancy. British Medical Journal, v. Teratology of the neural tube: history and paleopathology. Antropo, n. Etienne Geoffrey Saint-Hilaire and anencephaly: contribution of one naturalist to medical knowledge.

The contributions of J. Meckel, the Younger, to the science of teratology. The incorporation and degradation of pyrimidine DNA precursors by human leucocytes. British Journal of Cancer, v. Prevention of the first occurrence of neural-tube defects by periconceptional vitamin supplementation.

The New England Journal of Medicine, v. DAY, Paul L. Leukopenia and anemia in the monkey resulting from vitamin deficiency. Effects and safety of periconceptional folate supplementation for preventing birth defects. Cochrane database of systematic reviews, v. Methotrexate for inflammatory bowel disease: pharmacology and preliminary results. Mayo Clinic Proceedings, v. Wolff and Muller: fundamental eponyms of embryology, nephrology and urology.

Journal of Urology, v. Maternal and infant gene-folate interactions and the risk of neural tube defects. American Journal of Medical Genetics, part A, v. Temporary remissions in acute leukemia in children produced by folic acid antagonist, 4-aminopteroyl-glutamic acid. The action of pteroylglutamic conjugates on man. Science, v. GOH, Ingrid et al. Prenatal multivitamin supplementation and rates of congenital anomalies: a meta-analysis.

Canadian Journal of Obstetrics and Gynecology, v. Mechanics in embryogenesis and embryonics: prime mover or epiphenomenon? International Journal of Developmental Biology, v. Studies on the mechanism of action of chemotherapeutic agents in cancer. Influence of the citrovorum factor and folic acid on the toxic manifestations of aminopterin in mice.

Cancer, v. Requirements for the prevention of aminopterin toxicity by folic acid in mice. Concordia discords: duality in the origin of the vertebrate tail. Journal of Anatomy, v. A palatable diet for producing experimental folate deficiency in man.

American Journal of Clinical Nutrition, v. Experimental nutritional folate deficiency in man. Transactions of the Association of American Physicians, v.

The role of folic acid in pregnancy; with particular reference to anemia, abruption and abortion. Journal of Obstetrics and Gynecology of the British Commonwealth, v. Folic acid metabolism and human embryopathy. The Lancet, v. The history of folic acid. British Journal of Haematology, v.

History of developmental biology. Folic acid supplement; synthesis of pteroylglutamic acid liver L. Casei factor and pteroic acid. Annals of the New York Academy of Sciences, v. American Journal of Medical Genetics, v. Will increasing folic acid in fortified grain products further reduce neural tube defects without causing harm? Consideration of the evidence. Pediatric Research, v. Use of folic acid supplements and risk of cleft lip and palate in infants: a population-based cohort study.

The British Journal of General Practice, v. Amethopterin methotrexate in connective tissue disease-psoriasis and polyarthritis. Effect of deoxyuridine on incorporation of tritiated thymidine: difference between normoblasts and megaloblasts. Acta Medica Scandinavica, v. Chapter historical aspects of the major neurological vitamin deficiency disorders: overview and fat-soluble vitamin A.

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This article is only available in the PDF format. Download the PDF to view the article, as well as its associated figures and tables. The author of this book is professor of pediatrics of the University of Chile. It is his conception that individual physiologic conditions existing in the germ plasm may affect the offspring.

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