Distribution of mercury in the soft tissues of the blue tilapia Oreochromis aureus (Steindachner) after acute exposure to mercury (II) chloride

Allen, Patrick

doi:10.1007/bf00196939

Cited by 14 publications

(7 citation statements)

References 7 publications

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“…Our study also reveal that mercury accumulates in the lysosomes of the proximal tubules of the frog exactly as observed in the kidney of mammals (Norgaad et al 1989;Norgaad et al 1991) and fish (Allen 1994). Mercuric chloride, in small to moderate doses is primarily nephrotoxic to humans and animals (Zalups and Lash 1994).…”

Section: Discussionmentioning

confidence: 50%

“…In mammals the accumulation of mercury in the kidneys is very rapid, with as much as 50% of a dose appearing there within a few hours after exposure. Similarly, Allen (1994) found that the kidney of the fish Oreochromis aureus also appeared to be the target tissue for mercury during acute exposures, since the kidney accumulated the highest concentrations of the mercury after 12 h of exposure.…”

Section: Discussionmentioning

confidence: 93%

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Autometallographic tracing of Hg–S quantum dots in frogs exposed to inorganic mercury

Loumbourdis

Danscher

2007

Biometals

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The histochemical distribution of mercury in the kidneys and gut of frogs (Rana ridibunda) exposed to inorganic mercury was analyzed with autometallography (AMG). It was found that most mercury in the kidneys accumulated in the proximal convoluted tubules as Hg-S nanocrystal, while control animals were totally void of AMG grains. In the gut the highest concentration of mercury was observed in the large intestine. The AMG grains were primarily located in the apical part of the absorptive cells, although rather high concentrations of silver enhanced mercury quantum dots were also detected in a special cell type of gut epithelium and the glycocalyx. A certain amount of AMG grains were detected in the lumen of the gut. We hypothesize that this pool of quantum dots results from sloughed off epithelial cells and macrophages. Such still intact cells and red blood cells containing AMG grains were also found in the lumen of the gut.

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Section: Discussionmentioning

confidence: 50%

Section: Discussionmentioning

confidence: 93%

Autometallographic tracing of Hg–S quantum dots in frogs exposed to inorganic mercury

Loumbourdis

Danscher

2007

Biometals

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“…The induction of low molecular weight metal -binding proteins, such as metallothionein is closely related to heavy metal exposure and metals acquired from the environment can be detoxified by binding to these proteins [15]. Therefore, tissues like liver which is a major producer of metalbinding proteins showed higher concentrations of most of the heavy metals [16,17,18]. Copper persisted more in liver even after 30 days of exposure (1.25 g/g) in the present investigation.…”

Section: Use Of Dilution Water For Conducting Experimentssupporting

confidence: 47%

Untitled

2019

RJLBPCS

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The excessive occurrence of heavy metals in natural loads has now-a-days become a matter of concern for the health of aquatic ecosystem. Heavy metals like Copper, Lead, Mercury, Cadmium, Nickel and Chromium are mainly responsible for water pollution. Metal pollution is a global problem growing at an alarming rate and aquatic organisms are continuously exposed to elevated levels of metals seriously threatening the whole ecosystem. The current experimental study of bioaccumulation of Copper, Lead and Cadmium in fish Clarias batrachus (Linn.) was conducted on 10 th , 20 th and 30 th days of exposure. The physico-chemical characterization of water was done as per standard methods (APHA, 2012). The tissues samples were analyzed using Inductively Coupled Plasma Atomic Emission Spectrophotometer (ICP-AES) and the results were expressed as g/gm.Enhanced bioaccumulation of all the heavy metals was observed with increased time duration. Experimental tissues of kidney and liver were found to accumulate highest amounts of heavy metals in comparison to the control tissues of respective organs. Accelerated release of heavy metals into the aquatic environment leads to serious water pollution problems, persistence and bioaccumulation. Therefore, it is important to know the various sources of discharge of heavy metals into aquatic ecosystems throughout the world. The present study was undertaken to assess bioaccumulation of some heavy metals in the fish, Clarias batrachus (Linn.) and to address its correlative impacts.

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“…The anatomical and physiological particularities of the species studied and the type of prey ingested can heavily in#uence bioaccumulation processes at the level of the di!erent internal compartments of the "sh. See, for example, the results obtained on the blue Tilapia (Oreochromis aureus) after 1 week of exposure to 100 ) g L\ Hg(II): the order of Hg concentrations in the tissues was kidneys'gill "laments'intestine'liver' brain'caudal muscle (Allen, 1994).…”

Section: Simon and Boudoumentioning

confidence: 97%

“…The intestinal barrier is highly irrigated, in line with its role in the absorption of nutrients; it can therefore accumulate contaminants transported by the circulatory system. Similarly, bile appears to play an important role in the contamination of "sh intestine by heavy metals; Hg conjugates in the liver, with cysteine, reduced glutathion or other thiol ligands, are excreted into the bile, enter the intestine, and accumulated at the gut wall interface (Allen, 1994).…”

Section: Simon and Boudoumentioning

confidence: 99%

Direct and Trophic Contamination of the Herbivorous Carp Ctenopharyngodon idella by Inorganic Mercury and Methylmercury

Simon

Boudou

2001

Ecotoxicology and Environmental Safety

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Distribution of mercury in the soft tissues of the blue tilapia Oreochromis aureus (Steindachner) after acute exposure to mercury (II) chloride

Cited by 14 publications

References 7 publications

Autometallographic tracing of Hg–S quantum dots in frogs exposed to inorganic mercury

Autometallographic tracing of Hg–S quantum dots in frogs exposed to inorganic mercury

Untitled

Direct and Trophic Contamination of the Herbivorous Carp Ctenopharyngodon idella by Inorganic Mercury and Methylmercury

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