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Histochemical demonstration of two mercury pools in trout tissues: mercury in kidney and liver after mercuric chloride exposure.

Abstract：

:Juvenile rainbow trout (Salmo gairdneri) were exposed to 100 ppb mercury (as HgCl2) in the water for 14 days. Concentrations of mercury in water and fish organs were monitored using radiolabeled mercury. Tissues from kidney and liver were fixed, and sections were developed by autometallography, a method whereby accumulations of mercury sulfides and/or mercury selenides are silver amplified. In the kidney, mercury was found within lysosomes and extracellularly in the basal lamina of proximal tubules. In the liver, mercury was found within lysosomes of the hepatocytes. Additional groups of mercury-exposed trout were subjected to selenium (as Na2SeO3), administered intraperitoneally 2 hr before fixation. Following this treatment, additional mercury could be visualized in the kidney circulatory system, including glomeruli, and in the nucleus and endoplasmic reticulum of liver cells. It is suggested that the mercury visualized prior to selenium treatment represents inorganic mercury, while additional mercury visualized after selenium administration represents an organic form.

journal_name

Ecotoxicol Environ Saf

journal_title

Ecotoxicology and environmental safety

authors

Baatrup E,Nielsen MG,Danscher G

doi

10.1016/0147-6513(86)90018-7

subject

Has Abstract

pub_date

1986-12-01 00:00:00

pages

267-82

issue

3

eissn

0147-6513

issn

1090-2414

pii

0147-6513(86)90018-7

journal_volume

12

pub_type

杂志文章

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