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pubmed-article:8214123pubmed:dateCreated1993-11-22lld:pubmed
pubmed-article:8214123pubmed:abstractTextWe examined the effect of dietary polyunsaturated fatty acids (PUFA) on cardiac sympathetic neurotransmission. Rats were fed semisynthetic diets (18.5% fat wt/wt) high in saturated fatty acids (control diet), high in n-6 PUFA (corn oil), or enriched with n-3 PUFA (Maxepa). A perfused innervated heart model was used to examine different aspects of sympathetic neurotransmission 10 wk after the feeding. Dietary PUFA increased the content of n-6 or n-3 PUFA in myocardial phospholipids compared with animals fed control diets. Myocardial norepinephrine content, sympathetic nerve stimulation-induced norepinephrine release, neural reuptake, presynaptic alpha-adrenergic inhibition of norepinephrine release, and postsynaptic inotropic response (+/- dP/dt) to sympathetic nerve stimulation or to a beta-agonist were essentially not influenced by dietary PUFA. Neural norepinephrine release during prolonged ischemia (60 min) was also similar in hearts from rats fed n-6 PUFA and control diets. Thus a modification of sympathetic neurotransmission was not achieved by feeding PUFA-enriched diets for 10 wk.lld:pubmed
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pubmed-article:8214123pubmed:dateRevised2006-11-15lld:pubmed
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pubmed-article:8214123pubmed:year1993lld:pubmed
pubmed-article:8214123pubmed:articleTitleLack of modulation by dietary unsaturated fats on sympathetic neurotransmission in rat hearts.lld:pubmed
pubmed-article:8214123pubmed:affiliationDepartment of Medicine (Royal Infirmary of Edinburgh), University of Edinburgh, United Kingdom.lld:pubmed
pubmed-article:8214123pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:8214123pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed