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Tuesday, July 28, 2020 | History

2 edition of Mercury and cadmium binding proteins in marine mammal tissues found in the catalog.

Mercury and cadmium binding proteins in marine mammal tissues

Karl Theodor Von der Trenck

Mercury and cadmium binding proteins in marine mammal tissues

by Karl Theodor Von der Trenck

  • 318 Want to read
  • 17 Currently reading

Published .
Written in English

    Subjects:
  • Marine mammals -- Mercury content.,
  • Mercury -- Toxicology.

  • Edition Notes

    Statementby Karl Theodor Von der Trenck.
    The Physical Object
    Pagination[14], 137 leaves, bound :
    Number of Pages137
    ID Numbers
    Open LibraryOL14235709M

    The levels of mercury found in prey tissue were much lower than those in the dolphins, consistent with a number of previous studies of marine mammals, –. However mercury is strongly biomagnified in marine food chains [31] – [33], and bioaccumulates in muscle tissue, blubber and in the liver of marine mammals [29]. When binding occurs, even highly water-soluble chemicals can accumulate. This is illustrated by cobalt, which binds very tightly and specifically to sites in the liver and accumulate there despite its water solubility. Similar accumulation processes occur for mercury, copper, cadmium.

    This study aims to present records of southern sea lions (Otaria flavescens) on the coast of Arraial do Cabo, located on the east coast of Rio de Janeiro State, southeastern Brazil, and information on the levels of total mercury (THg) found in muscle tissue of a specimen collected in the study area. Between July and February , 5 occurrences of southern sea lions . In aquatic mammals, maternal transfer is the movement of contaminants from mother to offspring, typically of lipophilic contaminants while in utero or through the mother's milk. This has become important with the increase in usage of persistent organic pollutants ().POPs biomagnify due to their lipophilic nature and become accumulated in the lipid tissues of aquatic mammals.

      SIDEBARS. Mercury, Mercury Everywhere. Mercury is number three on the ATSDR hazardous metal list. 1 Yet doctors and dentists routinely assure the American public that the same mercury that is so dangerous when spilled on the floor becomes mysteriously and miraculously safe in the mouth as part of silver-colored amalgam dental fillings. (Astonishingly, . ITANO, K. and KAWAI, S.: a, Changes of mercury contents and biological half-live of mercury in the striped dolphins. In “Studies on the levels of organochlorine compounds and heavy metals in the marine organisms”, Fujiyama ed., .


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Mercury and cadmium binding proteins in marine mammal tissues by Karl Theodor Von der Trenck Download PDF EPUB FB2

Mercury and cadmium binding proteins in marine mammal tissues Public Deposited. fractions of kidney and liver from two bearded seals and three walrus were chromatographed on Sephadex G and cadmium and mercury distribution among proteins of different molecular weight was determined.

Similar results for two sea lions (Lee et al., Cited by: 1. Mercury-binding proteins isolated from gills of mussels occur as two molecular weight variants of about and kdaltons, respectively, on Sephadex G These have been designated as HgBP20 and HgBP10 following the nomenclature used for cadmium-binding proteins.

HgBP20 represents the primary mercury-binding by: Mercury and cadmium binding proteins in marine mammal tissues. Abstract. Graduation date: The subcellular fractions of liver and kidney from three bearded\ud seals (Erignathus barbatus nauticus) and three walrus (Odobenus\ud rosmarus divergens) were analyzed for cadmium and mercury content,\ud and the results were compared with the.

AN ABSTRACT OF THE THESIS OF Karl Theodor von der Trenck for the degree of Master of Science in Biochemistry and Biophysics presented on Novem Title: MERCURY. The protein was first isolated from horse kidney as a cadmium-binding protein and was later named ‘metallothionein’ because of its exceptionally high content of metals and thiol groups (Kägi and Vallee ; Margoshes and Vallee ).MTs are divided into three distinct classes in a definition based on their unique characteristic properties (Fowler et al.

This is similar to previous reports for marine mammal tissues from other localities showing a positive correlation between Hg and Se in a ratio of nearly (Wagemann et. Chemical Forms of Mercury and Cadmium Accumulated in Marine Mammals and Seabirds as Determined by XAFS Analysis Article in Environmental Science and Technology 38(24) December with.

Wagemann R, Trebacz E, Boila G, Lockhart WL. Methyl-mercury and total mercury in tissues of Arctic marine mammals. Sci Total Environ. ; 18 (1)– [Google Scholar] Weihe P, Grandjean P, Jørgensen PJ. Application of hair-mercury analysis to determine the impact of a seafood advisory.

Environ Res. ; – [Google Scholar]. 2. In contrast, most of the mercury is concentrated in the nuclear fractions of kidney (35M7{'o) and liver (~%) of this species.

Two mercury (cadmium)-binding proteins with properties similar to metallothionein from other species have been isolated from sea lion kidney and liver and partially characterized. Removal of two major plasma proteins to enhance the detection of more cadmium-binding proteins.

Due to the complex nature of human plasma and the low cadmium levels in the normal human population, a pre-fractionation method was used to remove the two most abundant plasma proteins (albumin & IgG) from the plasma samples, in order to recover and identify as many cadmium-binding proteins.

The freshwater painted turtle, Chrysemys picta, was used to investigate (a) the distribution of an injected dose of Cd in tissues over a period of h (8 days) and (b) the effect of non-isotopic cadmium injection on tissue metal-binding protein levels.

Cadmium is cleared from the blood with 9% remaining in the circulation at h. Cd is found in all tissues. Distribution of Cd and As in organs and tissues of four marine mammal species stranded along the Italian coasts binding proteins from marine vertebrates, Mar Mercury (Hg), cadmium.

Arctic marine mammals, toxaphene. and heavy metals mercury, selenium, cadmium, lead. in tissues of marine mammal and sea birds is relatively complete.

Trace Metal-Binding Proteins. Cadmium was efficiently accumulated in nature to a mean concentration of33, and 50 micrograms/g wet tissue in the hepatopancreas of three species of molluscs, and 30%, 11%, and 43% of the element in each tissue of whelk, turbo, and squid was extracted to the soluble fraction, respectively.

Higher contents of cadmium have been reported in renal tissue in marine mammals due to its visceral distribution pattern, nevertheless, the liver has a.

Cadmium binding proteins have been isolated from liver homogenates of marine vertebrates by ultracentri fugation and gel filtration.

Liver samples of the Atlantic grey seal Halichoerus grypus and the Pacific fur seal Callorhinus ursinus contain measurable quantities of cadmium binding protein. The copper rock fish Sebastodes caurinus showed an increase in hepatic cadmium binding protein.

Mercury and coal-fired power plants. Burning coal can release mercury, lead and cadmium among other metals.

Iranian and Venezuelan oil are high in vanadium. Coal plants should have scrubbers, as they do in the United States. However, India and China, in particular, often do not have scrubbers on their power plants. Selenium binding protein 1. Selenium binding protein 1 (SBP1) was identified in QC03LH3 pygmy sperm whale liver and selenium-binding proteins may actin sensing reactive xenobiotics in the cytoplasm.

Pygmy sperm whales are exposed to PCBs and high concentrations of PCBs have been measured in many other marine mammal species. Glutathione (GSH) is an antioxidant in plants, animals, fungi, and some bacteria and hione is capable of preventing damage to important cellular components caused by reactive oxygen species such as free radicals, peroxides, lipid peroxides, and heavy metals.

It is a tripeptide with a gamma peptide linkage between the carboxyl group of the glutamate side. 2 1 Abstract 2 Tissue and subcellular accumulation of cadmium were studied in different tissues of three 3 marine invertebrates (blue mussel Mytilus edulis, the tunicate Ciona intestinalis and the sea 4 star Asterias rubens) using radioactive Cd as a tracer.

The organisms were exposed to5 2 and 50 g Cd L-1 for 21 days. Quantitative data were obtained by dissecting, weighing. CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): The marine mussel, Mytilus edulis, possesses low molecular weight, metal-binding proteins which can be induced by and, in turn, bind mercury when individuals are exposed to low, but elevated concentrations of mercury as HgCl2.

Induction of the proteins by exposure of mussels to copper, cadmium, or mercury .Scientists found mercury at levels high enough to cause severe neurological damage in humans and demonstrated for the first time that the toxic element cadmium can cross the .kidneys of marine mammals (Wagemann and Muir, ; Dietz et al., ).

In fact, potential toxic effects of Cd are mitigated by the binding to metallothioneins (MTs) in the liver and the kidneys (Klaassen and Liu, ; Teigen et al., 9).

MT is a low molecular weight protein.