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Vieira JCS, Cavecci B, Queiroz JV, Braga CP, Padilha CCF, Leite AL, Figueiredo WS, Buzalaf MAR, Zara LF, Padilha PM. Determination of the Mercury Fraction Linked to Protein of Muscle and Liver Tissue of Tucunaré (Cichla spp.) from the Amazon Region of Brazil. Arch Environ Contam Toxicol 2015; 69:422-430. [PMID: 25981407 DOI: 10.1007/s00244-015-0160-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 05/02/2015] [Indexed: 06/04/2023]
Abstract
This study used metalloproteomic techniques to characterize mercury (Hg)-bound proteins in the muscle and liver tissue of Tucunaré (Cichla spp.) collected at the Jirau Hydroelectric Power Plant in Madeira River Basin, Brazil. The proteome of the muscle and liver tissue was obtained after two steps of fractional precipitation and separating the proteins by 2-D polyacrylamide gel electrophoresis. Hg was identified and quantified in the protein spots by graphite furnace atomic absorption spectrometry after acid mineralization in an ultrasound bath. Hg with a molecular weight <20 kDa and a concentration between 13.30 and 33.40 mg g(-1) was found in the protein spots. These protein spots were characterized by electrospray ionization tandem mass spectrometry after trypsin digestion. From a total of 12 analyzed spots, seven proteins showing Hg biomarker characteristics were identified: parvalbumin and its isoforms, ubiquitin-40S ribosomal protein S27a, zinc (Zn) finger and BTB domain-containing protein 24, and dual-specificity protein phosphatase 22-B.
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Affiliation(s)
- José C S Vieira
- Department of Chemistry and Biochemistry, Bioscience Institute - UNESP, São Paulo State University, Rubião Júnior, Botucatu, São Paulo, 18618-970, Brazil
| | - Bruna Cavecci
- Department of Chemistry and Biochemistry, Bioscience Institute - UNESP, São Paulo State University, Rubião Júnior, Botucatu, São Paulo, 18618-970, Brazil.
| | - João V Queiroz
- College of Veterinary and Animal Science, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Camila P Braga
- Department of Chemistry and Biochemistry, Bioscience Institute - UNESP, São Paulo State University, Rubião Júnior, Botucatu, São Paulo, 18618-970, Brazil
| | - Cilene C F Padilha
- Department of Chemistry and Biochemistry, Bioscience Institute - UNESP, São Paulo State University, Rubião Júnior, Botucatu, São Paulo, 18618-970, Brazil
| | - Aline L Leite
- Department of Biological Science, University of São Paulo, Bauru, São Paulo, Brazil
| | - Wllyane S Figueiredo
- College of Planaltina, University of Brasília, Brasília, Distrito Federal, Brazil
| | - Marília A R Buzalaf
- Department of Biological Science, University of São Paulo, Bauru, São Paulo, Brazil
| | - Luiz F Zara
- College of Planaltina, University of Brasília, Brasília, Distrito Federal, Brazil
| | - Pedro M Padilha
- Department of Chemistry and Biochemistry, Bioscience Institute - UNESP, São Paulo State University, Rubião Júnior, Botucatu, São Paulo, 18618-970, Brazil
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de Lima PM, Cavecci B, Roldan PDS, Braga CP, Padilha CDCF, Pezzato LE, Padilha PDM. Zinc determination in samples fish by GFAAS using acid digestion in an ultrasound bath. Food Measure 2015. [DOI: 10.1007/s11694-015-9283-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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dos Santos FA, Cavecci B, Vieira JCS, Franzini VP, Santos A, de Lima Leite A, Buzalaf MAR, Zara LF, de Magalhães Padilha P. A Metalloproteomics Study on the Association of Mercury With Breast Milk in Samples From Lactating Women in the Amazon Region of Brazil. Arch Environ Contam Toxicol 2015; 69:223-229. [PMID: 25981408 DOI: 10.1007/s00244-015-0161-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Accepted: 05/04/2015] [Indexed: 06/04/2023]
Abstract
This study aimed to identify metalloproteins that lose their metal ions in the presence of mercury (Hg) and bind to Hg in breast milk samples collected from the riverine population of the Madeira River, a tributary of the Amazon River. Initially, total Hg was determined from the hair of lactating women to identify individuals who were contaminated followed by a proteomic analysis of breast milk samples through two-dimensional polyacrylamide gel electrophoresis after acetone precipitation. The presence of Hg in the obtained protein spots was determined by cold vapor atomic absorption spectrometry and cold vapor atomic fluorescence spectrometry. These determinations indicated the presence of Hg in one protein spot, which was then characterized through electrospray ionization tandem mass spectrometry. Based on searches in the UniProt database, this protein spot was identified as lysozyme C.
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Affiliation(s)
- Felipe André dos Santos
- Institute of Chemistry, Federal University of Mato Grosso do Sul (INQUI/UFMS), Campo Grande, Mato Grosso do Sul, Brazil
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Pozzi CMC, Braga CP, Vieira JCS, Cavecci B, Vitor de Queiroz J, de Souza Barbosa H, Arruda MAZ, Gozzo FC, Padilha PDM. Metal ions bound to the human milk immunoglobulin A: metalloproteomic approach. Food Chem 2014; 166:492-497. [PMID: 25053085 DOI: 10.1016/j.foodchem.2014.06.040] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2013] [Revised: 04/04/2014] [Accepted: 06/08/2014] [Indexed: 10/25/2022]
Abstract
The presence of calcium, iron, and zinc bound to human milk secretory IgA (sIgA) was investigated. The sIgA components were first separated by two-dimensional polyacrylamide gel electrophoresis and then identified by electrospray ionization-tandem mass spectrometry (ESI MS MS). The metal ions were detected by flame atomic absorption spectrometry after acid mineralization of the spots. The results showed eight protein spots corresponding to the IgA heavy chain constant region. Another spot was identified as the transmembrane secretory component. Calcium was bound to both the transmembrane component and the heavy chain constant region, while zinc was bound to the heavy chain constant region and iron was not bound with the identified proteins. The association of a metal ion with a protein is important for a number of reasons, and therefore, the findings of the present study may lead to a better understanding of the mechanisms of action and of additional roles that sIgA and its components play in human milk.
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Affiliation(s)
| | - Camila Pereira Braga
- Institute of Biosciences, São Paulo State University-UNESP, Botucatu, SP, Brazil.
| | | | - Bruna Cavecci
- Institute of Biosciences, São Paulo State University-UNESP, Botucatu, SP, Brazil
| | | | | | | | - Fabio Cesar Gozzo
- Institute of Chemistry, University of Campinas-UNICAMP, Campinas, SP, Brazil
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Braga C, Vieira J, Moraes P, Cavecci B, Fernandes AA, Okoshi M, Padilha P. Metallomics and proteins expression of diabetic rats (778.2). FASEB J 2014. [DOI: 10.1096/fasebj.28.1_supplement.778.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Camila Braga
- Chemistry and Biochemistry UNESP‐Institute of Biosciences BotucatuBrazil
| | - José Vieira
- Chemistry and Biochemistry UNESP‐Institute of Biosciences BotucatuBrazil
| | - Paula Moraes
- Chemistry and Biochemistry UNESP‐Institute of Biosciences BotucatuBrazil
| | - Bruna Cavecci
- Chemistry and Biochemistry UNESP‐Institute of Biosciences BotucatuBrazil
| | | | - Marina Okoshi
- Medical Clinic Unesp Botucatu Medical SchoolBotucatuBrazil
| | - Pedro Padilha
- Chemistry and Biochemistry UNESP‐Institute of Biosciences BotucatuBrazil
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Cavecci B, Lima PMD, Queiroz JVD, Braga CP, Padilha CCF, Leite AL, Buzalaf MAR, Pezzato LE, Padilha PM. Metalloproteomic Profile Determination of Muscle Samples from Nile Tilapia (Oreochromis niloticus) Using AAS and ESI-MS/MS after 2D-PAGE Separation. J BRAZIL CHEM SOC 2014. [DOI: 10.5935/0103-5053.20140260] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Moraes PM, Santos FA, Cavecci B, Padilha CCF, Vieira JCS, Roldan PS, Padilha PDM. GFAAS determination of mercury in muscle samples of fish from Amazon, Brazil. Food Chem 2013; 141:2614-7. [PMID: 23871002 DOI: 10.1016/j.foodchem.2013.05.008] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Revised: 04/23/2013] [Accepted: 05/05/2013] [Indexed: 11/24/2022]
Abstract
In the present study, a simple, rapid and sensitive method was developed for the determination of mercury concentrations in the muscle tissue of fish from the Brazilian Amazon using graphite furnace atomic absorption spectrometry (GFAAS) following acid mineralization of the samples in an ultrasonic cold water bath. Using copper nitrate as a chemical modifier in solution and sodium tungstate as permanent modifier, we were able to attain thermal stabilization of the mercury up to the atomisation temperature of 1600 °C in the GFAAS assay. The calculated limits of detection (LOD) and quantification (LOQ) were 0.014 and 0.047 mg kg(-1), respectively.
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Affiliation(s)
- Paula M Moraes
- UNESP - São Paulo State University, Biosciences Institute, Botucatu, SP, Brazil
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