| Freeze-dried ham promotes azoxymethane-induced mucin-depleted foci and aberrant crypt foci in rat colon. | |
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MedLine Citation:
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PMID: 20574917 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Processed and red meat consumption is associated with the risk of colorectal cancer. Meta-analyses have suggested that the risk associated with processed meat is higher. Most processed meats are cured and cooked, which leads to formation of free nitrosyl heme. We speculated that free nitrosyl heme is more toxic than native myoglobin. The promoting effect of a freeze-dried, cooked, cured ham diet was looked for in a 100-day study. Colon carcinogenesis endpoints were aberrant crypt foci and mucin depleted foci (MDF). A second study (14 days) was designed 1) to compare the effect of ham, hemoglobin, and hemin; and 2) to test the effect of sodium chloride, nitrite, and phosphate in diet on early biomarkers associated with heme-induced promotion. In the 100-day study, control and ham-fed rats had 3.5 and 8.5 MDF/colon, respectively (P < 0.0001). Promotion was associated with cytotoxicity and lipid peroxidation. In the short-term study, cytotoxicity and lipid peroxidation of fecal water, and the urinary marker of lipid peroxidation, increased dramatically in ham- and hemin-fed rat. In contrast, the hemoglobin diet, sodium chloride, nitrite, phosphate diet had no effect. Freeze-dried cooked ham can promote colon carcinogenesis in a rodent model. Hemin, but not hemoglobin, mimicked ham effect on early biochemical markers associated with carcinogenesis. |
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Authors:
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Fabrice H F Pierre; Raphaëlle L Santarelli; Ossama Allam; Sylviane Tache; Nathalie Naud; Francoise Gueraud; Denis E Corpet |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Nutrition and cancer Volume: 62 ISSN: 1532-7914 ISO Abbreviation: Nutr Cancer Publication Date: 2010 |
Date Detail:
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Created Date: 2010-06-24 Completed Date: 2010-10-04 Revised Date: 2011-08-01 |
Medline Journal Info:
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Nlm Unique ID: 7905040 Medline TA: Nutr Cancer Country: England |
Other Details:
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Languages: eng Pagination: 567-73 Citation Subset: IM |
Affiliation:
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Universite de Toulouse, INRA/ENVT, Toulouse, France. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Azoxymethane Colonic Neoplasms / etiology* Female Freeze Drying Hemin / toxicity Lipid Peroxidation Meat Products / adverse effects* Mucins / analysis* Precancerous Conditions / etiology* Rats Rats, Inbred F344 Swine |
| Chemical | |
Reg. No./Substance:
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0/Mucins; 16009-13-5/Hemin; 25843-45-2/Azoxymethane |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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