Colon tissue concentrations of copper, iron, selenium, and zinc in colorectal carcinoma patients
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P. Hornik
,
D. Milde
Abstract
Concentration of four trace elements (copper, zinc, iron, and selenium) was determined in colon tissue from twenty-three patients with colorectal cancer. The tissue samples were dried and dissolved using microwave-assisted digestion technique. The content of trace elements was determined using atomic absorption spectrometry. No significant differences between Zn levels in normal and cancerous tissues were observed. However, the levels of Cu, Fe, and Se were significantly higher in cancerous tissues than in the control samples.
The results obtained sing microwave-assisted technique were compared to those obtained via alkaline digestion with tetramethylammonium hydroxide. Both techniques were used for the digestion of certified reference material of pork liver. Very good agreement with the certified values of Cu, Fe, and Zn in the reference material was achieved using alkaline digestion procedure. This technique seems to be an efficient alternative to decomposition of biological samples.
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© 2006 Institute of Chemistry, Slovak Academy of Sciences
Articles in the same Issue
- Influence of medium on the kinetics of oxidation of iron(II) ion with t-butyl hydroperoxide
- Synthesis of new thiazolo[2,3-b]pyrimidine derivatives of pharmaceutical interest
- Enthalpic analysis of the CaTiSiO5 system
- Kinetic, spectrophotometric determination of nanogram levels of manganese(II) using catalytic azo dye—potassium periodate—1,10-phenanthroline system
- Application of a ternary complex of tungsten(VI) with 4-nitrocatechol and thiazolyl blue for extraction-spectrophotometric determination of tungsten
- Determination of risperidone at picogram level in human urine by luminol—H2O2 chemiluminescence
- Electrochemical dissolution of chalcopyrite studied by voltammetry of immobilized microparticles
- Colon tissue concentrations of copper, iron, selenium, and zinc in colorectal carcinoma patients
- Structure of tetrakis(pyridinioacetate) neodymium(III) tetrahydrate perchlorate
- Thermally stable oligomer—Metal complexes based on oligo-ortho-aminophenol and oligophenylazomethinephenol
- Adsorption of SO2 on alumina
- One-pot, three-component synthesis of secondary amines and trisubstituted hydrazines from ketones
- Synthesis of α,α′-bis(R-benzylidene)cycloalkanones catalyzed by potassium hydrogen sulfate under solvent-free conditions
- Electrical conductivity of the molten KF—K2TaF7 system
- New substituted mono-and bis(imidazolyl)pyridines and their application in nitroaldolisation reaction
Articles in the same Issue
- Influence of medium on the kinetics of oxidation of iron(II) ion with t-butyl hydroperoxide
- Synthesis of new thiazolo[2,3-b]pyrimidine derivatives of pharmaceutical interest
- Enthalpic analysis of the CaTiSiO5 system
- Kinetic, spectrophotometric determination of nanogram levels of manganese(II) using catalytic azo dye—potassium periodate—1,10-phenanthroline system
- Application of a ternary complex of tungsten(VI) with 4-nitrocatechol and thiazolyl blue for extraction-spectrophotometric determination of tungsten
- Determination of risperidone at picogram level in human urine by luminol—H2O2 chemiluminescence
- Electrochemical dissolution of chalcopyrite studied by voltammetry of immobilized microparticles
- Colon tissue concentrations of copper, iron, selenium, and zinc in colorectal carcinoma patients
- Structure of tetrakis(pyridinioacetate) neodymium(III) tetrahydrate perchlorate
- Thermally stable oligomer—Metal complexes based on oligo-ortho-aminophenol and oligophenylazomethinephenol
- Adsorption of SO2 on alumina
- One-pot, three-component synthesis of secondary amines and trisubstituted hydrazines from ketones
- Synthesis of α,α′-bis(R-benzylidene)cycloalkanones catalyzed by potassium hydrogen sulfate under solvent-free conditions
- Electrical conductivity of the molten KF—K2TaF7 system
- New substituted mono-and bis(imidazolyl)pyridines and their application in nitroaldolisation reaction
