X-ray microprobe synchroton radiation X-ray fluorescence application on human teeth of renal insufficiency patients

Marques, Ana Filipa A.; Marques, J. J. Figueiredo; Casaca, C.; Carvalho, Luísa

doi:10.1016/j.sab.2004.07.017

Cited by 16 publications

(18 citation statements)

References 15 publications

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“…In addition, this study highlighted a strong positive correlation between Pb and Ca in muscle of O. vulgaris. This association is consistent with the results of many previous works for human bones and teeth, 19,20 considering the big chemical affinity between Ca and Pb.…”

Section: Discussionsupporting

confidence: 93%

Characterization of essential and toxic elements in cephalopod tissues by EDXRF and AAS

2007

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and Pb were measured in the muscle, digestive glands and gonads of Octopus vulgaris, Lolligo vulgaris and Sepia officinalis captured in the west and south coast of Portugal. Essential elements (K, Ca, Fe, Cu, Zn, Se, Rb and Sr) were obtained by energy dispersive x-ray fluorescence spectrometry, while toxic elements (Cr, Ni, Cd, Hg and Pb) were obtained by atomic absorption spectrometry. The latter technique was used owing to its higher sensitivity, since these elements were not detected by the first technique. The tissues of the three species present a similar pattern for essential elements. Potassium and Ca are present at the highest concentration in all the studied samples. The highest levels for toxic elements were found in the digestive glands, exceeding the maximum allowed values in the case of Se and Cd. However, in the muscle tissue these values were never reached. Comparing both coasts, we can say that the west coast presents higher levels of Pb while the south coast presents enhanced levels of Hg.

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Section: Discussionsupporting

confidence: 93%

Characterization of essential and toxic elements in cephalopod tissues by EDXRF and AAS

2007

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“…Our result showed that Pb was conspicuous in SD and had the same distribution with Zn as stated previously, which agrees well with Bellis et al's works on both goat teeth [21] and human teeth, [15] with Ide-Ektessabi et al's work [22] and with Anjos et al's work. [26] In fact, Ca and Pb compete for the binding sites in the body via isovalent replacements in hydroxyapatite (Marques et al [12] ) and dietary deficiencies of Ca and P can result in an increased Pb absorption. [21] Our results contradict the results of Guerra et al's work on primary teeth of children by using SRXRF, which stated that Pb and Ca have a similar distribution and Pb content decreases from enamel to CD, [18] and that later Pb and Cu similarly amassed in superficial enamel.…”

Section: Results and Discussion Incisormentioning

confidence: 99%

“…In fact, not only Pb but also other elements have heterogeneous distributions in different anatomical parts in tooth, which has been acknowledged by the scientific community. [9][10][11][12] It has been hypothesised that Pb levels at each point along some lines in tooth represent Pb exposure at the specific time when that part of tooth is being mineralised. [13] A typical human incisor transect is shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Microdistribution of lead in human teeth using microbeam synchrotron radiation X-ray fluorescence (μ-SRXRF)

et al. 2016

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Lead (Pb) exposure is known to be associated with adverse effects on human health, especially during the prenatal period and early childhood. The Pb content in teeth has been suggested as a useful biomarker for the evaluation of cumulative Pb exposure. This study was designed to employ the microbeam synchrotron radiation X-ray fluorescence technique to determine the microdistribution of Pb within the tooth to evaluate the reliability of the technique and the effectiveness of tooth Pb as a biomarker of Pb exposure. The results showed that in the incisor sample, Pb primarily deposited in secondary dentine region close to the pulp and secondarily at enamel exterior. In addition, Pb colocalised with Zn, indicating a positive correlation between Pb and Zn. By contrast, in the two molar samples, Pb accumulated principally in the pulp, and secondarily in the enamel. At the same time, Pb in these two molar samples colocalised with Ca instead of Zn as was observed in the incisor sample. Several batches of line scans further confirmed the conclusions. The feasibility of using microbeam synchrotron radiation X-ray fluorescence to determine the microdistribution of Pb in teeth and of using the tooth Pb, especially in dentine, as a biomarker was discussed.

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“…Current methods for the spatial analysis of teeth using element-specific detection include synchrotron microprobe Xray fluorescence (SXRF), [9][10][11] particle-induced X-ray emission (PIXE), [12][13][14][15][16] and secondary ion mass spectrometry (SIMS). 17 However, these methods are expensive, which prohibits their use in large epidemiologic studies.…”

Section: La-icp-msmentioning

confidence: 99%

Elemental bio-imaging of trace elements in teeth using laser ablation-inductively coupled plasma-mass spectrometry

Hare

Austin

Doble

et al. 2011

Journal of Dentistry

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Elemental bio-imaging employing LA-ICP-MS is a novel method for constructing μm-scale maps of trace elements in teeth. This simple imaging method displays the heterogeneity of trace elements throughout the tooth structure that correspond to specific structural and developmental features of teeth. As a preliminary study, this work demonstrates the capabilities of LA-ICP-MS imaging in dental research.

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X-ray microprobe synchroton radiation X-ray fluorescence application on human teeth of renal insufficiency patients

Cited by 16 publications

References 15 publications

Characterization of essential and toxic elements in cephalopod tissues by EDXRF and AAS

Characterization of essential and toxic elements in cephalopod tissues by EDXRF and AAS

Microdistribution of lead in human teeth using microbeam synchrotron radiation X-ray fluorescence (μ-SRXRF)

Elemental bio-imaging of trace elements in teeth using laser ablation-inductively coupled plasma-mass spectrometry

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