Bibliotheca nutritio et dieta最新文献

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Vitamins in the maintenance of optimum immune functions and in the prevention of phagocyte-mediated tissue damage and carcinogenesis. 维生素在维持最佳免疫功能和预防吞噬细胞介导的组织损伤和致癌作用。
Bibliotheca nutritio et dieta Pub Date : 1995-01-01 DOI: 10.1159/000424736
R Anderson, V L van Antwerpen
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引用次数: 2
Micronutrients, antioxidants and risk of cancer. 微量营养素,抗氧化剂和癌症风险。
Bibliotheca nutritio et dieta Pub Date : 1995-01-01 DOI: 10.1159/000424738
C J Schorah
{"title":"Micronutrients, antioxidants and risk of cancer.","authors":"C J Schorah","doi":"10.1159/000424738","DOIUrl":"https://doi.org/10.1159/000424738","url":null,"abstract":"<p><p>Currently there is little evidence that vitamins of any type are able to greatly modify the progression of established malignancy with the exception of promyelocytic leukaemia. In contrast, there is considerable laboratory evidence from chemical, cell culture and animal studies that antioxidant vitamins and related micronutrients are able to slow, or possibly prevent the carcinogenic process. There is a good theoretical basis for these findings. Current theories for the mechanism of tumourigenesis suggest that reactive species and prooxidants promote and encourage the process whilst antioxidants are inhibitory and protective. Retinoids and folate with limited or no antioxidant activity may protect DNA in other ways. In man there is support for this role from the extraordinarily high concentrations of ascorbate and possibly alpha-tocopherol at sites where oxidant stress is likely to be most intense, with loss of such antioxidant protection in some conditions which predispose to malignancy. There is also impressive epidemiological agreement, particularly from observational studies, where the lowest fruit and vegetable intake has been consistently associated with increased risk of cancer, especially of the lung and gastrointestinal tract, but much less evidence that such low intakes can encourage the development of cancers which are under hormonal control. Where individual micronutrients have been considered, beta-carotene appears to have the strongest protective effect followed by vitamin C and vitamin E. Whilst the experimental studies have suggested a role for retinoids, this has not been confirmed by the observational studies. Unfortunately, with the exception of oral leukoplakia, studies investigating reversal of premalignant conditions have been disappointing, and two intervention studies aimed at prevention in large populations have produced conflicting results. All this begs the question as to what dietary advice or intervention, if any, should be provided prior to the publication of the many randomized intervention studies that are presently investigating the role of micronutrients in cancer prevention. Gey [73] has produced recommendations for minimum blood concentrations and intakes of antioxidant micronutrients. (ABSTRACT TRUNCATED AT 250 WORDS)</p>","PeriodicalId":75591,"journal":{"name":"Bibliotheca nutritio et dieta","volume":" 52","pages":"92-107"},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1159/000424738","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19751215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
Do we need new concepts for establishing recommended dietary allowances? 我们是否需要新的概念来建立推荐膳食摄入量?
Bibliotheca nutritio et dieta Pub Date : 1995-01-01 DOI: 10.1159/000424729
P Walter
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引用次数: 2
Nitrosamines and vitamins. 亚硝胺和维生素。
Bibliotheca nutritio et dieta Pub Date : 1995-01-01 DOI: 10.1159/000424733
P I Reed
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引用次数: 0
Discussions in the United States about recommended daily dietary allowances in the future. 美国关于未来每日推荐膳食摄入量的讨论。
Bibliotheca nutritio et dieta Pub Date : 1995-01-01 DOI: 10.1159/000424744
P A Lachance
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引用次数: 1
Discussions in working groups. 工作组讨论。
Bibliotheca nutritio et dieta Pub Date : 1995-01-01 DOI: 10.1159/000424745
P Walter
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引用次数: 0
Folic acid and the prevention of neural tube defects: the need for public health action. 叶酸与神经管缺陷的预防:公共卫生行动的必要性。
Bibliotheca nutritio et dieta Pub Date : 1995-01-01 DOI: 10.1159/000424735
N J Wald
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引用次数: 6
Vitamin intake in Great Britain: association with mortality rates for coronary heart disease. 英国的维生素摄入量:与冠心病死亡率的关系。
Bibliotheca nutritio et dieta Pub Date : 1995-01-01 DOI: 10.1159/000424741
M Ashwell, D Buss
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引用次数: 1
Macronutrient intake in rural Zaïre: measurement by an alternative direct weighing method and food analysis. 农村宏量营养素摄入量Zaïre:替代直接称重法测量和食品分析。
Bibliotheca nutritio et dieta Pub Date : 1994-01-01 DOI: 10.1159/000423776
J Mauron, D Barclay, A Blondel, C Cavadini, H Dirren
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引用次数: 1
Nutrition policy in Europe: design or improvisation? 欧洲的营养政策:设计还是即兴?
Bibliotheca nutritio et dieta Pub Date : 1994-01-01 DOI: 10.1159/000423772
J R Lupien
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引用次数: 0
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