{"id":58113,"date":"1999-12-01T00:00:00","date_gmt":"2018-12-04T06:49:55","guid":{"rendered":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/effect-of-vegetable-and-carotenoid-consumption-on-aberrant\/"},"modified":"2018-12-04T07:49:55","modified_gmt":"2018-12-04T06:49:55","slug":"effect-of-vegetable-and-carotenoid-consumption-on-aberrant","status":"publish","type":"resume","link":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/effect-of-vegetable-and-carotenoid-consumption-on-aberrant\/","title":{"rendered":"Effect of vegetable and carotenoid consumption on aberrant crypt multiplicity, a surrogate end-point marker for colorectal cancer in azoxymethane-induced rats"},"content":{"rendered":"<p>Epidemiological studies indicate that increased vegetable consumption reduces the risk of colorectal cancer mortality. In the present study we have investigated the effect of consumption of standard diets supplemented with freeze-dried vegetables (peas, spinach, sprouts and broccoli) and carotenoids (all-trans beta-carotene and palm oil carotenoid extract) on surrogate end-point markers for colorectal cancer in an azoxymethane-induced rat model. Mean aberrant crypt multiplicity was reduced (19%) by the pea-supplemented diet only (P &lt; 0.05).<\/p>\n<p>The vegetable-induced effect was more apparent in aberrant crypt foci with higher multiplicity. Intervention with diets supplemented with peas, spinach, sprouts and a mix of all vegetables reduced the number of foci with &gt;2 aberrant crypts\/focus by 37, 26, 23 and 26%, respectively (P &lt; 0.05).<\/p>\n<p>Even more pronounced effects were observed in foci with &gt;3 aberrant crypts\/focus, with reductions of similar to 50% in the pea and spinach intervention groups. All-trans beta-carotene and palm oil-derived carotenoids, supplied at similar doses to those expected in the vegetable diets, inhibited ACM only marginally. Aberrant crypt foci formation in groups fed a sprout-supplemented diet prior to or following azoxymethane treatment was similar, indicating that this effect is due to inhibition of promotion rather than initiation of colorectal carcinogenesis. Vegetable and carotenoid consumption did not affect in situ proliferation of colonic crypt cells, as assessed by semi-automated image analysis of bromodeoxyuridine (BrdU)-positive nuclei. BrdU-negative nuclei of colonic crypt cells were reduced slightly in the combined vegetable groups, as compared with the control (P &lt; 0.05).<\/p>\n<p>These data: (i) are in line with epidemiological evidence regarding beneficial effects of vegetable consumption on colorectal carcinogenesis; (ii) indicate that consumption of several types of vegetables inhibits early post-initiation events in colorectal carcinogenesis; (iii) suggest that the vegetable-induced effect is more pronounced in advanced lesions; (iv) indicate that the carotenoid content of the vegetables (alpha- and beta-carotene) contributes only marginally to the vegetable-induced effects.<\/p>\n","protected":false},"template":"","mots_cles":[],"class_list":["post-58113","resume","type-resume","status-publish","hentry"],"acf":{"adresse":"\"RIJKEN PJ,UNILEVER RES LABS VLAARDINGEN;POB 114;NL-3130 AC VLAARDINGEN, NETHERLANDS.philip.rijken@unilever.com\"","annee":"1999","mois":"12","numero":"20:12","page":"2267-2272","auteurs":[{"ID":58107,"post_author":"0","post_date":"2018-12-04 07:49:51","post_date_gmt":"2018-12-04 06:49:51","post_content":"","post_title":"Meijers","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"meijers","to_ping":"","pinged":"","post_modified":"2018-12-04 07:49:51","post_modified_gmt":"2018-12-04 06:49:51","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/auteur\/meijers\/","menu_order":0,"post_type":"auteur_resume","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":58108,"post_author":"0","post_date":"2018-12-04 07:49:52","post_date_gmt":"2018-12-04 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Benschop","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"van-benschop","to_ping":"","pinged":"","post_modified":"2018-12-04 07:49:53","post_modified_gmt":"2018-12-04 06:49:53","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/auteur\/van-benschop\/","menu_order":0,"post_type":"auteur_resume","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":58111,"post_author":"0","post_date":"2018-12-04 07:49:54","post_date_gmt":"2018-12-04 06:49:54","post_content":"","post_title":"Van De Kooij","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"van-de-kooij","to_ping":"","pinged":"","post_modified":"2018-12-04 07:49:54","post_modified_gmt":"2018-12-04 06:49:54","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/auteur\/van-de-kooij\/","menu_order":0,"post_type":"auteur_resume","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":58112,"post_author":"0","post_date":"2018-12-04 07:49:55","post_date_gmt":"2018-12-04 06:49:55","post_content":"","post_title":"Wiseman","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"wiseman-2","to_ping":"","pinged":"","post_modified":"2018-12-04 07:49:55","post_modified_gmt":"2018-12-04 06:49:55","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/auteur\/wiseman-2\/","menu_order":0,"post_type":"auteur_resume","post_mime_type":"","comment_count":"0","filter":"raw"}],"sources":[{"ID":21778,"post_author":"0","post_date":"2018-12-03 20:54:22","post_date_gmt":"2018-12-03 19:54:22","post_content":"","post_title":"CARCINOGENESIS","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"carcinogenesis","to_ping":"","pinged":"","post_modified":"2018-12-03 20:54:22","post_modified_gmt":"2018-12-03 19:54:22","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/source\/carcinogenesis\/","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) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Effect of vegetable and carotenoid consumption on aberrant crypt multiplicity, a surrogate end-point marker for colorectal cancer in azoxymethane-induced rats - Aprifel<\/title>\n<meta name=\"description\" content=\"Effect of vegetable and carotenoid consumption on aberrant crypt multiplicity, a surrogate end-point marker 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