Effect of the amino acid histidine on the uptake of cadmium from the digestive system of the blue crab, Callinectes sapidus

Journal Article · Wed Jul 01 00:00:00 EDT 1981 · Bull. Environ. Contam. Toxicol.; (United States)

DOI:https://doi.org/10.1007/BF01610983· OSTI ID:6060047

Pecon, J; Powell, E N

The digestive tract functions in the storage, metabolism, and excretion of heavy metals in invertebrates. The importance of the digestive tract and the processes governing digestion and absorption of nutrients in heavy metal uptake is becoming increasingly clear. The results of this study suggest that in order to understand the processes controlling heavy metal uptake in invertebrates, it will be necessary to investigate the role that digestion and absorption play in determining the transport rate of metals across the gut wall into the blood. For example, some amino acids increase metal absorption rates, whereas other compounds, such as phytate, decrease metal absorption rates. The results also suggest that experimental designs to investigate metal absorption must include an appreciation of the significant role that the feeding state of the animal (e.g. fed or starved) and the role chelators, particularly those produced by the organisms themselves during digestion, may play in the observed uptake rates of metal ions.

• Research Organization: Texas A and M Univ., College Station
• OSTI ID: 6060047
• Journal Information: Bull. Environ. Contam. Toxicol.; (United States), Vol. 27:1
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
CADMIUM
INTESTINAL ABSORPTION
HISTIDINE
BIOLOGICAL EFFECTS
BLOOD
CHELATING AGENTS
CRUSTACEANS
DIGESTION
DOSE-RESPONSE RELATIONSHIPS
EXCRETION
EXPERIMENTAL DATA
METABOLISM
QUANTITY RATIO
RESPONSE MODIFYING FACTORS
TIME DEPENDENCE
UPTAKE
ABSORPTION
AMINO ACIDS
ANIMALS
AQUATIC ORGANISMS
ARTHROPODS
AZOLES
BIOLOGICAL MATERIALS
BODY FLUIDS
CARBOXYLIC ACIDS
CLEARANCE
DATA
ELEMENTS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
IMIDAZOLES
INFORMATION
INVERTEBRATES
MATERIALS
METALS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
560304* - Chemicals Metabolism & Toxicology- Invertebrates- (-1987)