Acute waterborne cadmium uptake in rainbow trout is reduced by dietary calcium carbonate

Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP
B BaldisserottoC M Wood

Abstract

The effects of elevated dietary calcium (as CaCO3) and acute waterborne Cd exposure (50 microg/l) on whole body uptake, tissue uptake, and internal distribution of newly accumulated Cd, Ca2+, and Na+ in juvenile rainbow trout were examined. Fish were fed with three diets (mg Ca2+/g food): 20 (control), 30 and 60 for 7 days before fluxes were measured with radiotracers. The highest dietary Ca2+ elevation reduced waterborne whole body Ca2+ uptake, but did not protect against inhibition of waterborne Ca2+ uptake by waterborne Cd. Both Ca2+-supplemented diets reduced newly accumulated Ca2+ in the gills in relation to the control treatment, but did not prevent the Cd-inhibiting effect against accumulation of new Ca2+ in most compartments. Fish fed with Ca2+-supplemented diets showed markedly lower rates of whole body uptake and internalization (in some tissues) of waterborne Cd, illustrating that, while dietary Ca2+ supplementation did not protect against the impact of waterborne Cd on waterborne Ca2+ uptake, it did protect against the uptake of Cd. Waterborne Cd had no effect on Na+ fluxes, total Cl-, and in most body compartments, newly accumulated Na+ and total Na+ were also not affected. Dietary supplementation with CaCO3 had th...Continue Reading

References

May 1, 1988·The Journal of Membrane Biology·P M VerbostS E Wendelaar Bonga
Aug 17, 1999·Toxicology and Applied Pharmacology·N R BuryC M Wood
Mar 20, 2001·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·D J Randall, C Brauner
Nov 10, 2001·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·M A ZohouriC M Wood
Dec 28, 2002·The Journal of Experimental Biology·G G PyleC M Wood

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Citations

Nov 11, 2015·Environmental Pollution·Zhiqiang GuoIain Green
Feb 7, 2006·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·S Niyogi, C M Wood
Apr 9, 2011·Environment International·Benjamin J Shaw, Richard D Handy
Jan 28, 2020·Critical Reviews in Food Science and Nutrition·Karolina KwasekMichael Phillips

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