A highly sensitive method for the histochemical demonstration of copper in normal rat tissues

P. Szerdahelyi, P. Kása

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Abstract

Earlier, widely used histochemical methods for the demonstraton of copper are capable of detecting only extremely high tissue levels of this metal (generally only in pathological states, e.g. Wilsons's disease, or in cases of copper intoxication), because of their low sensitivity. The specificity of these methods has also proved to be unsatisfactory. We present a new method based on the release of bound (unreactive) copper by trichloroacetic acid, its primary precipitation using magnesium dithizonate, and intensification of the staining (secondary precipitation) using silver nitrate. Using this method, copper is demonstrable in various tissues of normal rats (brain, stomach, liver, small intestine, spleen, pancreas, kidneys) in the form of reddish to pink staining. This method can also be applied to locate pathologically high levels of copper.

Original languageEnglish
Pages (from-to)349-352
Number of pages4
JournalHistochemistry
Volume85
Issue number4
DOIs
Publication statusPublished - Jul 1 1986

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ASJC Scopus subject areas

  • Anatomy
  • Agricultural and Biological Sciences(all)

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