Calcium/cadmium interactions at uptake surfaces in rainbow trout: waterborne versus dietary routes of exposure.

@article{Franklin2005CalciumcadmiumIA,
  title={Calcium/cadmium interactions at uptake surfaces in rainbow trout: waterborne versus dietary routes of exposure.},
  author={Natasha M. Franklin and Chris N. Glover and James A. Nicol and Chris M. Wood},
  journal={Environmental toxicology and chemistry},
  year={2005},
  volume={24 11},
  pages={
          2954-64
        }
}
Juvenile rainbow trout (Oncorhynchus mykiss) were exposed to control, 3 microg/L waterborne Cd, or 500 mg/kg dietary Cd in combination with either a control (20 mg/g Ca2+ as CaCO3) or elevated (60 mg/g Ca2+) Ca2+ diet for 28 d. No mortality or growth effects were observed in response to either route of Cd exposure, although fish fed Ca2+-supplemented diets exhibited minor reductions in growth within the first few days of feeding. Waterborne and dietary Cd resulted in significant Cd accumulation… Expand
Interactions of waterborne and dietary cadmium on the expression of calcium transporters in the gills of rainbow trout: influence of dietary calcium supplementation.
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Evidence is provided of the importance of nutritional status on the transcriptional regulation of ion transport at the fish gill on the development of new regulatory approaches, such as the biotic ligand model, which currently do not account for the significance of diet on metal bioavailability in aquatic organisms. Expand
The chronic effects of dietary lead in freshwater juvenile rainbow trout (Oncorhynchus mykiss) fed elevated calcium diets.
TLDR
It is concluded that elevated dietary Ca(2+) levels will be protective in reducing Pb burdens in freshwater juvenile rainbow trout exposed to environments contaminated with waterborne Pb. Expand
Cadmium accumulation and in vitro analysis of calcium and cadmium transport functions in the gastro-intestinal tract of trout following chronic dietary cadmium and calcium feeding.
  • J. Klinck, T. Ng, C. Wood
  • Biology, Medicine
  • Comparative biochemistry and physiology. Toxicology & pharmacology : CBP
  • 2009
TLDR
It is indicated that elevated dietary Ca is protective against Cd uptake from an environmentally relevant diet, and that Ca andCd uptake may occur through both common and separate pathways in the GIT. Expand
Does dietary Ca protect against toxicity of a low dietborne Cd exposure to the rainbow trout?
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The results have demonstrated the need to use diets with natural compositions for dietary toxicity studies and protection against Cd accumulation was almost complete at the gills, robust in the stomach and whole body, but not significant in the liver, kidney, carcass, plasma, or red blood cells. Expand
Cadmium- and calcium-mediated toxicity in rainbow trout (Oncorhynchus mykiss) in vivo: interactions on fitness and mitochondrial endpoints.
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Overall, interactions between Cd and Ca on condition indices and mitochondrial responses were competitive or cooperative depending on exposure concentrations and duration. Expand
The simultaneous uptake of dietary and waterborne Cd in gastrointestinal tracts of marine yellowstripe goby Mugilogobius chulae.
TLDR
The simultaneous uptake of metal from two routes is far more complex than the situation of a single route of metal uptake, which should be evaluated in determining metal bioaccumulation and toxicity in both laboratory and field metal exposure scenario. Expand
Dietary Pb Accumulation in Juvenile Freshwater Rainbow Trout (Oncorhynchus mykiss)
TLDR
It is shown that Pb does accumulate internally from the diet when present at levels within the range reported in contaminated benthic invertebrates in nature, and the intestine is identified as a potential target site of chronic toxicity of Pb via the diet, and RBCs as a reservoir of dietary Pb. Expand
Interactions of waterborne and dietborne Pb in rainbow trout, Oncorhynchus mykiss: Bioaccumulation, physiological responses, and chronic toxicity.
TLDR
While physiological impacts of Pb were observed in both worms and fish, higher concentrations of dietborne Pb actually protected fish from waterborne P b bioaccumulation and these effects. Expand
Effects of dietary cadmium exposure on tissue-specific cadmium accumulation, iron status and expression of iron-handling and stress-inducible genes in rainbow trout: influence of elevated dietary iron.
TLDR
Elevated dietary Fe can reduce Cd accumulation and ameliorate Cd-induced stress responses in freshwater fish, and the effect of Cd on Fe handling in fish is indicated. Expand
Cd-Induced Responses in Plasma Ionic Regulation and Oxidative Stress in Rainbow Trout ( O. mykiss ) or Lake Whitefish ( C. clupeaformis ) During Chronic Waterborne Exposure
During chronic exposure to Cd or other metals, freshwater fish generally undergo physiological changes that results in acclimation, following a phase of damage and subsequent repair. The mechanismsExpand
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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 dietaryCa2+ supplementation did not protect against the impact of waterbourne Cd on waterborne Ca2+, it didProtect against the uptake of Cd. Expand
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