Cardiac catecholamines in rats fed copper deficient or copper adequate diets containing fructose or starch

Journal Article · Thu Feb 09 00:00:00 EST 1989 · FASEB Journal (Federation of American Societies for Experimental Biology); (USA)

OSTI ID:7190436

Scholfield, D J; Fields, M; Beal, T; Lewis, C G; Behall, K M ^[1]

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1. Dept. og Agriculture, Beltsville, MD (USA)

The symptoms of copper (Cu) deficiency are known to be more severe when rats are fed a diet with fructose (F) as the principal carbohydrate. Mortality, in males, due to cardiac abnormalities usually occurs after five weeks of a 62% F, 0.6 ppm Cu deficient diet. These effects are not observed if cornstarch (CS) is the carbohydrate (CHO) source. Studies with F containing diets have shown increased catecholamine (C) turnover rates while diets deficient in Cu result in decreased norepinephrine (N) levels in tissues. Dopamine B-hydroxylase (EC 1.14.17.1) is a Cu dependent enzyme which catalyzes the conversion of dopamine (D) to N. An experiment was designed to investigate the effects of CHO and dietary Cu on levels of three C in cardiac tissue. Thirty-two male and female Sprague-Dawley rats were fed Cu deficient or adequate diets with 60% of calories from F or CS for 6 weeks. N, epinephrine (E) and D were measured by HPLC. Statistical analysis indicates that Cu deficiency tends to decrease N levels, while having the reverse effect on E. D did not appear to change. These findings indicate that Cu deficiency but not dietary CHO can affect the concentration of N and E in rat cardiac tissue.

• OSTI ID: 7190436
• Journal Information: FASEB Journal (Federation of American Societies for Experimental Biology); (USA), Vol. 3:3; ISSN 0892-6638
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ADRENALINE
BIOCHEMICAL REACTION KINETICS
COPPER
BIOLOGICAL EFFECTS
FRUCTOSE
NORADRENALINE
STARCH
ANIMAL TISSUES
HEART
MORTALITY
NUTRITIONAL DEFICIENCY
RATS
ADRENAL HORMONES
ANIMALS
AUTONOMIC NERVOUS SYSTEM AGENTS
BODY
CARBOHYDRATES
CARDIOTONICS
CARDIOVASCULAR AGENTS
CARDIOVASCULAR SYSTEM
DRUGS
ELEMENTS
HEXOSES
KETONES
KINETICS
MAMMALS
METALS
MONOSACCHARIDES
NEUROREGULATORS
ORGANIC COMPOUNDS
ORGANS
POLYSACCHARIDES
REACTION KINETICS
REAGENTS
RODENTS
SACCHARIDES
SYMPATHOMIMETICS
TISSUES
TRANSITION ELEMENTS
VERTEBRATES
560300* - Chemicals Metabolism & Toxicology