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Neuropsychological dysfunction related to earlier occupational exposure to mercury vapor

E.C Zachi Dora Selma Fix Ventura; M.A.M Faria; A Taub

Brazilian Journal of Medical and Biological Research Ribeirão Preto, SP v. 40, n. 3, p. 425-433, 2007

Ribeirão Preto, SP 2007

Localização: IP - Instituto de Psicologia    (Peridico (AM=VDo/166) )(Acessar)

  • Título:
    Neuropsychological dysfunction related to earlier occupational exposure to mercury vapor
  • Autor: E.C Zachi
  • Dora Selma Fix Ventura; M.A.M Faria; A Taub
  • Assuntos: MERCÚRIO (ELEMENTO QUÍMICO); AVALIAÇÃO NEUROPSICOLÓGICA; EXPOSIÇÃO OCUPACIONAL; DOENÇAS OCUPACIONAIS
  • É parte de: Brazilian Journal of Medical and Biological Research Ribeirão Preto, SP v. 40, n. 3, p. 425-433, 2007
  • Notas: Indexado na LILACS - Literatura Latino-Americana e do Caribe em Ciências da Saúde;Indexado na Medline;Indexado no Web of Science
  • Descrição: We assessed the neuropsychological test performances of 26 patients (mean age = 41.5 ± 6.1 years; mean years of education = 9.8 ± 1.8; 20 males) diagnosed with chronic occupational mercurialism who were former workers at a fluorescent lamp factory. They had been exposed to elemental mercury for an average of 10.2 ± 3.8 years and had been away from this work for 6 ± 4.7 years. Mean urinary mercury concentrations 1 year after cessation of work were 1.8 ± 0.9 µg/g creatinine. Twenty control subjects matched for age, gender, and education (18 males) were used for comparison. Neuropsychological assessment included attention, inhibitory control, verbal and visual memory, verbal fluency, manual dexterity, visual-spatial function, executive function, and semantic knowledge tests. The Beck Depression Inventory and the State and Trait Inventory were used to assess depression and anxiety symptoms, respectively. The raw score for the group exposed to mercury indicated slower information processing speed, inferior performance in psychomotor speed, verbal spontaneous recall memory, and manual dexterity of the dominant hand and non-dominant hand (P < 0.05). In addition, the patients showed increased depression and anxiety symptoms (P < 0.001). A statistically significant correlation (Pearson) was demonstrable between mean urinary mercury and anxiety trait (r = 0.75, P = 0.03). The neuropsychological performances of the former workers suggest that occupational exposure
    to elemental mercury has long-term effects on information processing and psychomotor function, with increased depression and anxiety also possibly reflecting the psychosocial context.
  • Editor: Ribeirão Preto, SP
  • Data de criação/publicação: 2007
  • Formato: p. 425-433.
  • Idioma: Inglês
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