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J Trace Elem Med Biol. 2017 Dec;44:71-75. doi: 10.1016/j.jtemb.2017.06.002. Epub 2017 Jun 15.

Investigating the influence of standard staining procedures on the copper distribution and concentration in Wilson's disease liver samples by laser ablation-inductively coupled plasma-mass spectrometry.

Author information

1
Westfälische Wilhelms-Universität Münster, Institut für Anorganische und Analytische Chemie, Corrensstraße 30, 48149 Münster, Germany.
2
Helmholtz Zentrum München, Institut für Pathologie - Abteilung Analytische Pathologie, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany.
3
Technische Universität München, Institut für Allgemeine Pathologie und Pathologische Anatomie, Trogerstraße 18, 81675 München, Germany.
4
Universitätsklinikum Freiburg, Institut für Klinische Pathologie, Breisacher Straße 115a, 79106 Freiburg, Germany.
5
Westfälische Wilhelms-Universität Münster, Institut für Anorganische und Analytische Chemie, Corrensstraße 30, 48149 Münster, Germany; European Virtual Institute for Speciation Analysis (EVISA), Mendelstraße 11, 48149 Münster, Germany.
6
Westfälische Wilhelms-Universität Münster, Institut für Anorganische und Analytische Chemie, Corrensstraße 30, 48149 Münster, Germany. Electronic address: uk@uni-muenster.de.

Abstract

The influence of rhodanine and haematoxylin and eosin (HE) staining on the copper distribution and concentration in liver needle biopsy samples originating from patients with Wilson's disease (WD), a rare autosomal recessive inherited disorder of the copper metabolism, is investigated. In contemporary diagnostic of WD, rhodanine staining is used for histopathology, since rhodanine and copper are forming a red to orange-red complex, which can be recognized in the liver tissue using a microscope. In this paper, a laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) method is applied for the analysis of eight different WD liver samples. Apart from a spatially resolved elemental detection as qualitative information, this LA-ICP-MS method offers also quantitative information by external calibration with matrix-matched gelatine standards. The sample set of this work included an unstained and a rhodanine stained section of each WD liver sample. While unstained sections of WD liver samples showed very distinct structures of the copper distribution with high copper concentrations, rhodanine stained sections revealed a blurred copper distribution with significant decreased concentrations in a range from 20 to more than 90%. This implies a copper removal from the liver tissue by complexation during the rhodanine staining. In contrast to this, a further HE stained sample of one WD liver sample did not show a significant decrease in the copper concentration and influence on the copper distribution in comparison to the unstained section. Therefore, HE staining can be combined with the analysis by means of LA-ICP-MS in two successive steps from one thin section of a biopsy specimen. This allows further information to be gained on the elemental distribution by LA-ICP-MS additional to results obtained by histological staining.

KEYWORDS:

Copper; Elemental bioimaging; Haematoxylin and eosin staining; Laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS); Rhodanine staining; Wilson’s disease

PMID:
28965603
DOI:
10.1016/j.jtemb.2017.06.002
[Indexed for MEDLINE]

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