Trace metal quantification in bladder biopsies from tumoral lesions of Tunisian cancer and controls subjects.
Identifieur interne : 000060 ( Main/Exploration ); précédent : 000059; suivant : 000061Trace metal quantification in bladder biopsies from tumoral lesions of Tunisian cancer and controls subjects.
Auteurs : Molka Feki-Tounsi [France] ; Pablo Olmedo ; Fernando Gil ; Mohamed-Nabil Mhiri ; Ahmed Rebai ; Amel Hamza-ChaffaiSource :
- Environmental science and pollution research international [ 1614-7499 ] ; 2014.
Descripteurs français
- Wicri :
- geographic : Tunisie.
English descriptors
- KwdEn :
- Aged, Arsenic (analysis), Biopsy, Cadmium (analysis), Case-Control Studies, Chromium (analysis), Environmental Monitoring, Environmental Pollutants (analysis), Female, Humans, Middle Aged, Nickel (analysis), Spectrophotometry, Atomic, Tunisia (epidemiology), Urinary Bladder (chemistry), Urinary Bladder (pathology), Urinary Bladder Neoplasms (chemistry), Urinary Bladder Neoplasms (pathology).
- MESH :
- chemical , analysis : Arsenic, Cadmium, Chromium, Environmental Pollutants, Nickel.
- geographic , epidemiology : Tunisia.
- chemistry : Urinary Bladder, Urinary Bladder Neoplasms.
- pathology : Urinary Bladder, Urinary Bladder Neoplasms.
- Aged, Biopsy, Case-Control Studies, Environmental Monitoring, Female, Humans, Middle Aged, Spectrophotometry, Atomic.
Abstract
The incidence of bladder tumors has been dramatically increasing since the 1970s, possibly as a consequence of ongoing environmental pollution. Previous studies have provided some evidence of an association between cancer and exposure to carcinogenic metals. In order to examine the association between levels of toxic metals in patients with bladder tumors and controls, the amounts of arsenic, cadmium, chromium, and nickel were measured in tumoral lesions and adjacent normal part of the bladder mucosa excised for carcinoma and compared with those in the bladder mucosa of volunteer subjects operated for non-neoplastic diseases. The quantification of metals in tissue was assessed by atomic absorption spectroscopy. In tumoral tissues of the excised bladder mucosa, content of Cr and Ni was significantly low compared to that of adjacent normal tissues and control tissues while that of As and Cd in normal tissues adjacent to the tumor were significantly elevated compared to controls. Though the sample size was small, the present study shows that concentrations of metals such as Cd, Cr, As, and Ni in bladder tissue may be used as a biomarker of exposure. On the basis of the results obtained in this study, high amounts of As and Cd in adjacent normal parts of the bladders with carcinomas compared to controls would strongly suggest possible, individual or synergistic, effects of these pollutants on enzymatic systems, priming an oncogenic pathway.
DOI: 10.1007/s11356-014-3099-x
PubMed: 24903250
Affiliations:
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Le document en format XML
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<author><name sortKey="Gil, Fernando" sort="Gil, Fernando" uniqKey="Gil F" first="Fernando" last="Gil">Fernando Gil</name>
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<author><name sortKey="Mhiri, Mohamed Nabil" sort="Mhiri, Mohamed Nabil" uniqKey="Mhiri M" first="Mohamed-Nabil" last="Mhiri">Mohamed-Nabil Mhiri</name>
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<author><name sortKey="Hamza Chaffai, Amel" sort="Hamza Chaffai, Amel" uniqKey="Hamza Chaffai A" first="Amel" last="Hamza-Chaffai">Amel Hamza-Chaffai</name>
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<term>Chromium (analysis)</term>
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<term>Environmental Pollutants (analysis)</term>
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<term>Middle Aged</term>
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<term>Urinary Bladder (pathology)</term>
<term>Urinary Bladder Neoplasms (chemistry)</term>
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<term>Humans</term>
<term>Middle Aged</term>
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<front><div type="abstract" xml:lang="en">The incidence of bladder tumors has been dramatically increasing since the 1970s, possibly as a consequence of ongoing environmental pollution. Previous studies have provided some evidence of an association between cancer and exposure to carcinogenic metals. In order to examine the association between levels of toxic metals in patients with bladder tumors and controls, the amounts of arsenic, cadmium, chromium, and nickel were measured in tumoral lesions and adjacent normal part of the bladder mucosa excised for carcinoma and compared with those in the bladder mucosa of volunteer subjects operated for non-neoplastic diseases. The quantification of metals in tissue was assessed by atomic absorption spectroscopy. In tumoral tissues of the excised bladder mucosa, content of Cr and Ni was significantly low compared to that of adjacent normal tissues and control tissues while that of As and Cd in normal tissues adjacent to the tumor were significantly elevated compared to controls. Though the sample size was small, the present study shows that concentrations of metals such as Cd, Cr, As, and Ni in bladder tissue may be used as a biomarker of exposure. On the basis of the results obtained in this study, high amounts of As and Cd in adjacent normal parts of the bladders with carcinomas compared to controls would strongly suggest possible, individual or synergistic, effects of these pollutants on enzymatic systems, priming an oncogenic pathway.</div>
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<name sortKey="Mhiri, Mohamed Nabil" sort="Mhiri, Mohamed Nabil" uniqKey="Mhiri M" first="Mohamed-Nabil" last="Mhiri">Mohamed-Nabil Mhiri</name>
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<name sortKey="Rebai, Ahmed" sort="Rebai, Ahmed" uniqKey="Rebai A" first="Ahmed" last="Rebai">Ahmed Rebai</name>
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