Document Detail

Iron utilization and liver mineral concentrations in rats fed safflower oil, flaxseed oil, olive oil, or beef tallow in combination with different concentrations of dietary iron.
MedLine Citation:
PMID:  14997026     Owner:  NLM     Status:  MEDLINE    
Diets with a higher proportion of polyunsaturated fatty acids (i.e., linoleic acid) have decreased iron absorption and utilization compared with diets containing a higher proportion of the saturated fatty acid stearic acid (e.g., beef tallow). However, less is known regarding the influence of other polyunsaturated or monounsaturated fatty acids, along with higher dietary iron, on iron absorption and utilization. The present study was conducted to compare the effects of dietary fat sources known to vary in (n-3), (n-6), and (n-9) fatty acids on iron utilization and liver mineral concentrations. Male weanling rats were fed a diet containing 10, 35, or 100 microg/g iron in combination with safflower oil, flaxseed oil, olive oil, or beef tallow for 8 wk. Indicators of iron status, iron utilization, and liver iron concentrations were unaffected by an interaction between the fat source and iron concentration. Plasma copper was the only variable affected by an interaction between the fat source and dietary iron. Findings of this study demonstrate that flaxseed oil and olive oil may alter tissue minerals and affect iron utilization. Further studies should be conducted to establish the effect of varying (n-3), (n-6), and (n-9) fatty acids on trace mineral status and iron utilization.
Andrea D Shotton; Elizabeth A Droke
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Biological trace element research     Volume:  97     ISSN:  0163-4984     ISO Abbreviation:  Biol Trace Elem Res     Publication Date:  2004 Mar 
Date Detail:
Created Date:  2004-03-03     Completed Date:  2004-11-16     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7911509     Medline TA:  Biol Trace Elem Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  265-78     Citation Subset:  IM    
Nutritional Sciences Department, Oklahoma State University, Stillwater, OK 74078, USA.
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MeSH Terms
Dietary Fats / pharmacology*
Fats / pharmacology
Iron, Dietary / administration & dosage*,  metabolism*
Linseed Oil / pharmacology
Liver / chemistry,  drug effects*,  metabolism*
Minerals / analysis*
Organ Size / drug effects
Plant Oils / pharmacology*
Rats, Sprague-Dawley
Safflower Oil / pharmacology
Trace Elements / analysis
Weight Gain / drug effects
Reg. No./Substance:
0/Dietary Fats; 0/Fats; 0/Iron, Dietary; 0/Minerals; 0/Plant Oils; 0/Trace Elements; 61789-97-7/tallow; 8001-23-8/Safflower Oil; 8001-25-0/olive oil; 8001-26-1/Linseed Oil

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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