{"id":56645,"date":"2001-06-01T00:00:00","date_gmt":"2018-12-04T06:26:36","guid":{"rendered":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/invited-commentary-serum-carotenoids-and-breast-cancer\/"},"modified":"2018-12-04T07:26:36","modified_gmt":"2018-12-04T06:26:36","slug":"invited-commentary-serum-carotenoids-and-breast-cancer","status":"publish","type":"resume","link":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/invited-commentary-serum-carotenoids-and-breast-cancer\/","title":{"rendered":"Invited commentary: serum carotenoids and breast cancer"},"content":{"rendered":"<p><strong>Extract<\/strong><\/p>\n<p>A vast amount of epidemiologic evidence suggests that a relatively high fruit and vegetable intake is associated with reduced risk of cancer. Although findings for breast cancer are less consistent than those for cancers at several other anatomic sites, including the mouth and pharynx, esophagus, stomach, and lung, a recent meta-analysis suggested that women with a relatively high vegetable consumption have a 25 percent reduction in breast cancer risk, and those with a relatively high fruit consumption have approximately a 6 percent reduction in risk.<\/p>\n<p>Vegetables and fruits contain numerous bioactive and potentially anticarcinogenic substances, including carotenes, dithiolthiones, flavonoids, indoles, isothiocyanates, phenols, folic acid, and vitamins C and E. The many possible mechanisms by which these substances might inhibit carcinogenesis include antioxidant effects, increases in cell-to-cell communication, activation of enzymes involved in carcinogen detoxification, alteration of estrogen metabolism, effects on DNA methylation and repair, and antiproliferative effects.<\/p>\n<p>Much attention has been devoted to study of the association between carotenoids and cancer risk. Although more than 600 carotenoids have been identified in nature, diets in the United States typically include only about 40 carotenoids, and only about 20 carotenoids can be measured in human serum and tissues. Those carotenoids that have the highest blood concentrations in populations which have been studied in the United States are &alpha;-carotene, &beta;-carotene, &beta;-cryptoxanthin, lutein, lycopene, and zeaxanthin. The carotenoids are antioxidants and may therefore exert anticarcinogenic effects by inhibiting the ability of free radicals to induce DNA damage. However, some carotenoids might operate by other means as well. For example, &alpha;- and &beta;-carotene and &beta;-cryptoxanthin can be metabolized to retinol and thereby induce epithelial cell differentiation, and &alpha;- and &beta;-carotene can also inhibit cell proliferation.<\/p>\n<p>There have been many epidemiologic studies &hellip;<\/p>\n","protected":false},"template":"","mots_cles":[],"class_list":["post-56645","resume","type-resume","status-publish","hentry"],"acf":{"adresse":"\"ROHAN TE,ALBERT EINSTEIN COLL MED,DEPT EPIDEMIOL & SOCIAL MED;1300 MORRIS PK AVE; BRONX NY 10461, USA.rohan@aecom.yu.edu\"","annee":"2001","mois":"6","numero":"153:12","page":"1148-1150","auteurs":[{"ID":19453,"post_author":"0","post_date":"2018-12-03 20:21:24","post_date_gmt":"2018-12-03 19:21:24","post_content":"","post_title":"Thomas E Rohan","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"thomas-e-rohan","to_ping":"","pinged":"","post_modified":"2018-12-03 20:21:24","post_modified_gmt":"2018-12-03 19:21:24","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/auteur\/thomas-e-rohan\/","menu_order":0,"post_type":"auteur_resume","post_mime_type":"","comment_count":"0","filter":"raw"}],"sources":[{"ID":2252,"post_author":"0","post_date":"2018-12-03 16:53:48","post_date_gmt":"2018-12-03 15:53:48","post_content":"","post_title":"American journal of epidemiology","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"american-journal-of-epidemiology","to_ping":"","pinged":"","post_modified":"2018-12-03 16:53:48","post_modified_gmt":"2018-12-03 15:53:48","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/source\/american-journal-of-epidemiology\/","menu_order":0,"post_type":"source","post_mime_type":"","comment_count":"0","filter":"raw"}]},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.6 (Yoast SEO v23.6) - 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