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Author |
Vandeputte, D.F.; Ameloot, P.C.; Cleymaet, R.; Coomans, D.; Van Grieken, R.E. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Localization of lead and fluoride in cultured tooth germs by laser microprobe mass analysis |
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A1 Journal article |
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Year |
1990 |
Publication |
Biological trace element research |
Abbreviated Journal |
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Volume |
23 |
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Pages |
133-144 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
Trace elements can influence dental health, possibly by altering tooth resistance during preeruptive development. Therefore, it was investigated whether lead and fluoride would be incorporated into the calcifying matrices or the cellular parts of tooth germs in vitro. Using laser microprobe mass analysis, the localization of lead and fluoride was studied in the different layers or tooth germs that had been cultured in a medium to which PbCl2 of NaF had been added in different concentrations. Both elements could only be detected in the dentine layer. Hence, the enamel organ in the secretory stage of tooth development excludes lead and fluoride from the enamel, even when enamel formation by the ameloblasts is visibly disturbed. Furthermore, there seemed to be a process of saturation in the accumulation of lead and fluoride in the dentine. |
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Publication Date |
2008-06-13 |
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ISSN |
0163-4984 |
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Call Number |
UA @ admin @ c:irua:116797 |
Serial |
8182 |
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Author |
Ameloot, P.C.; Vandeputte, D.F.; Van Grieken, R.E.; Coomans, D. |
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Title |
Localization of lead in cultured tooth germs by laser microprobe micro-analysis |
Type |
A3 Journal article |
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Year |
1987 |
Publication |
Proceedings of the Finnish Dental Society |
Abbreviated Journal |
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Volume |
83 |
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Pages |
225-236 |
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Keywords |
A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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0039-551x |
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Call Number |
UA @ admin @ c:irua:116799 |
Serial |
8183 |
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Author |
Vandeputte, D.F.; Jacob, W.A.; Van Grieken, R.E. |
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Title |
Phosphorus, calcium and lead distribution in collagen in lead induced soft tissue calcification : an ultrastructural and X-ray microanalytical study |
Type |
A1 Journal article |
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Year |
1990 |
Publication |
Matrix |
Abbreviated Journal |
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Volume |
10 |
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1 |
Pages |
33-37 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
Repeated intraperitoneal injections of lead acetate in rats caused a calcification of the skin of the abdomen near the site of the injections. In the lead-induced calcifications, electron dense collagen bundles could be observed. On the surface of the collagen fibrils, needle-like crystals were visible. With energy-dispersive X-ray analysis, phosphorus, calcium and lead were detected in the electron dense collagen bundles. X-ray maps of the P-Kα, Ca-Kα, and Pb-Lα plus Pb-Lβ lines showed an equivalent distribution along the collagen fibrils for phosphorus and calcium. The occurrence of the most electron dense areas in the STEM-image was comparable to the lead distribution. A good correlation existed between the structural and the elemental images of the same area. Although the medicinal use of preparations containing lead is no longer recommended, some are still prescribed. From our results we can conclude that they should not be applied to injured or inflamed skin. |
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2012-04-16 |
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ISSN |
0934-8832 |
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Call Number |
UA @ admin @ c:irua:116930 |
Serial |
8377 |
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Author |
Vandeputte, D.F.; Jacob, W.A.; Van Grieken, R.E. |
![goto web page (via DOI) doi](http://nano.uantwerpen.be/nanorefs/img/doi.gif)
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Title |
Influence of fixation procedures on the microanalysis of lead-induced intranuclear inclusions in rat kidney |
Type |
A1 Journal article |
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Year |
1990 |
Publication |
The journal of histochemistry and cytochemistry |
Abbreviated Journal |
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Volume |
38 |
Issue ![sorted by Issue field, ascending order (up)](img/sort_asc.gif) |
3 |
Pages |
331-337 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
Using Laser Microprobe Mass Analysis (LAMMA), we studied the chemical composition of lead-induced intranuclear inclusions in rat kidney tissue prepared by three different wet chemical fixation procedures for transmission electron microscopy. Fixation with glutaraldehyde-Na2S gave the same results as fixation with glutaraldehyde only: a high lead concentration could be detected. Therefore, for lead strongly bound to proteins, precipitation procedures are not essential. Post-fixation with osmium tetroxide drastically changed the composition of the inclusions: the lead concentration decreased substantially, while sodium, calcium, and barium were introduced. The osmium tetroxide fixative was found to be the source of the contamination. It also contained aluminum, and we suggest that other proteins (e.g., in neurofibrillary tangles) might be able to take up Al out of solution and that care must be exercised in interpreting the microanalytical results of osmium-fixed material. For the microanalysis of the lead inclusions, fixation with glutaraldehyde only provides a good compromise between preservation of the ultrastructure and maintenance of the element distribution. |
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Publication Date |
2011-04-01 |
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0022-1554 |
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Call Number |
UA @ admin @ c:irua:116831 |
Serial |
8091 |
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Author |
Vandeputte, D.F.; Van Grieken, R.E.; Foets, B.J.J.; Misotten, L. |
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Title |
Characterization of the spheroliths present in primary atypical bandkeratopathy using laser microprobe mass analysis |
Type |
A1 Journal article |
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Year |
1989 |
Publication |
Biomedical and environmental mass spectrometry |
Abbreviated Journal |
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Volume |
18 |
Issue ![sorted by Issue field, ascending order (up)](img/sort_asc.gif) |
9 |
Pages |
753-756 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
Laser microprobe mass analysis was applied to study the chemical composition of spheroliths in the Bowman's membrane of patients suffering from primary atypical bandkeratopathy. The inclusions appear to consist mainly of calcium phosphate. |
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Publication Date |
2005-05-29 |
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ISSN |
0887-6134 |
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Call Number |
UA @ admin @ c:irua:116824 |
Serial |
7635 |
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Author |
Vandeputte, D.F.; Verbueken, A.H.; Jacob, W.A.; Van Grieken, R.E. |
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Title |
Laser microprobe mass analysis (LAMMA) to study lead intoxication at the subcellular level |
Type |
A3 Journal article |
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Year |
1986 |
Publication |
Acta pharmacologica et toxicologica |
Abbreviated Journal |
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Volume |
59 |
Issue ![sorted by Issue field, ascending order (up)](img/sort_asc.gif) |
S:7 |
Pages |
617-619 |
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Keywords |
A3 Journal article; Pharmacology. Therapy; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Publication Date |
2010-07-29 |
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ISSN |
0001-6683 |
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Call Number |
UA @ admin @ c:irua:116771 |
Serial |
8158 |
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Permanent link to this record |