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Proteomic Analysis of Urine in Rats Chronically Exposed to Fluoride
  • Universidade de São Paulo (USP)
  • Universidade Estadual Paulista (UNESP)
  • Universidade Federal do Rio de Janeiro (UFRJ)
  • Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Sponsorship Process Number: 
  • FAPESP: 05/02744-0
  • FAPESP: 05/03273-1
  • CNPq: 307006/2006-9
Urine is an ideal source of materials to search for potential disease-related biomarkers as it is produced by the affected tissues and can be easily obtained by noninvasive methods. 2-DE-based proteomic approach was used to better understand the molecular mechanisms of injury induced by fluoride (F(-)) and define potential biomarkers of dental fluorosis. Three groups of weanling male Wistar rats were treated with drinking water containing 0 (control), 5, or 50 ppm F(-) for 60 days (n = 15/group). During the experimental period, the animals were kept individually in metabolic cages, to analyze the water and food consumption, as well as fecal and urinary F excretion. Urinary proteome profiles were examined using 2-DE and Colloidal Coomassie Brilliant Blue staining. A dose-response regarding F(-) intake and excretion was detected. Quantitative intensity analysis revealed 8, 11, and 8 significantly altered proteins between control vs. 5 ppm F(-), control vs. 50 ppm F(-) and 5 ppm F(-) vs. 50 ppm F(-) groups, respectively. Two proteins regulated by androgens (androgen-regulated 20-KDa protein and 0c-2,1-globulin) and one related to detoxification (aflatoxin-Bl-aldehyde-reductase) were identified by MALDI-TOF-TOF MS/MS. Thus, proteomic analysis can help to better understand the mechanisms underlying F(-) toxicity, even in low doses. 2010 Wiley Periodicals, Inc. J Biochem Mol Toxicol 25:8-14, 2011; View this article online at DOI 10:1002/jbt.20353
Issue Date: 
Journal of Biochemical and Molecular Toxicology. Malden: Wiley-blackwell, v. 25, n. 1, p. 8-14, 2011.
  • Proteomics
  • Mass Spectrometry
  • Two-Dimensional Electrophoresis
  • fluoride
  • Urine
  • Biomarker
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Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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