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The toxic and accumulative effects of short-term exposure to cadmium in rainbow trout (Oncorhynchus mykiss).
Vet Hum Toxicol. 1997 Apr; 39(2):79-83.VH

Abstract

Groups of 20 trout (Oncorynchus mykiss) were exposed for 3-w periods to different subacute oral doses of Cl2Cd (0.01, 0.025 or 0.05 microgram Cd/mL). Cadmium toxicity and accumulation were studied in kidney, liver, gills, muscle and brain weekly. Cadmium determination was carried out using atomic absorption spectrocopy (AAS) with graphite furnace. After 21 d exposure, cadmium concentrations increased significantly. In all tissues studied except muscle and brain. Cadmium storage presented the following sequence: kidney > liver > gills. At the beginning, cadmium accumulation was linearly dose dependent (r = 0.999). Then, at the highest dose (0.05 microgram Cd/mL) accumulation increased rapidly during the second week of exposure until equilibrium was reached. In contrast, liver did not accumulate cadmium selectively, suggesting that liver is able to eliminate cadmium, perhaps through metallothionein formation. Cadmium levels in gills were higher than controls (P < 0.05) and showed signs of equilibrium after the first week. According to organ weight/body weight ratios, there was similar accumulation behavior. Liver and kidney ratios increased dose dependently, but gills and brain did not have significant differences.

Authors+Show Affiliations

Department of Toxicology, Faculty of Veterinary Medicine, University of Santiago de Compostela, Lugo, Spain.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

9080631

Citation

Melgar, M J., et al. "The Toxic and Accumulative Effects of Short-term Exposure to Cadmium in Rainbow Trout (Oncorhynchus Mykiss)." Veterinary and Human Toxicology, vol. 39, no. 2, 1997, pp. 79-83.
Melgar MJ, Perez M, Garcia MA, et al. The toxic and accumulative effects of short-term exposure to cadmium in rainbow trout (Oncorhynchus mykiss). Vet Hum Toxicol. 1997;39(2):79-83.
Melgar, M. J., Perez, M., Garcia, M. A., Alonso, J., & Miguez, B. (1997). The toxic and accumulative effects of short-term exposure to cadmium in rainbow trout (Oncorhynchus mykiss). Veterinary and Human Toxicology, 39(2), 79-83.
Melgar MJ, et al. The Toxic and Accumulative Effects of Short-term Exposure to Cadmium in Rainbow Trout (Oncorhynchus Mykiss). Vet Hum Toxicol. 1997;39(2):79-83. PubMed PMID: 9080631.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The toxic and accumulative effects of short-term exposure to cadmium in rainbow trout (Oncorhynchus mykiss). AU - Melgar,M J, AU - Perez,M, AU - Garcia,M A, AU - Alonso,J, AU - Miguez,B, PY - 1997/4/1/pubmed PY - 1997/4/1/medline PY - 1997/4/1/entrez SP - 79 EP - 83 JF - Veterinary and human toxicology JO - Vet Hum Toxicol VL - 39 IS - 2 N2 - Groups of 20 trout (Oncorynchus mykiss) were exposed for 3-w periods to different subacute oral doses of Cl2Cd (0.01, 0.025 or 0.05 microgram Cd/mL). Cadmium toxicity and accumulation were studied in kidney, liver, gills, muscle and brain weekly. Cadmium determination was carried out using atomic absorption spectrocopy (AAS) with graphite furnace. After 21 d exposure, cadmium concentrations increased significantly. In all tissues studied except muscle and brain. Cadmium storage presented the following sequence: kidney > liver > gills. At the beginning, cadmium accumulation was linearly dose dependent (r = 0.999). Then, at the highest dose (0.05 microgram Cd/mL) accumulation increased rapidly during the second week of exposure until equilibrium was reached. In contrast, liver did not accumulate cadmium selectively, suggesting that liver is able to eliminate cadmium, perhaps through metallothionein formation. Cadmium levels in gills were higher than controls (P < 0.05) and showed signs of equilibrium after the first week. According to organ weight/body weight ratios, there was similar accumulation behavior. Liver and kidney ratios increased dose dependently, but gills and brain did not have significant differences. SN - 0145-6296 UR - https://www.unboundmedicine.com/medline/citation/9080631/The_toxic_and_accumulative_effects_of_short_term_exposure_to_cadmium_in_rainbow_trout__Oncorhynchus_mykiss__ L2 - https://antibodies.cancer.gov/detail/CPTC-CTLA4-1 DB - PRIME DP - Unbound Medicine ER -