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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Dopamine Transporter Regulation during Four Nights of REM Sleep Deprivation Followed by Recovery - An in vivo Molecular Imaging Study in Humans

Texto completo
Autor(es):
Martins, R. C. S. [1] ; Andersen, M. L. [1] ; Garbuio, S. A. [1] ; Bittencourt, L. R. [1] ; Guindalini, C. [1, 2] ; Shih, M. C. [2] ; Hoexter, M. Q. [2] ; Bressan, R. A. [2] ; Castiglioni, M. L. V. [3] ; Tufik, S. [1]
Número total de Autores: 10
Afiliação do(s) autor(es):
[1] Univ Fed Sao Paulo, Dept Psychobiol, Escola Paulista Med, BR-04021002 Sao Paulo - Brazil
[2] Univ Fed Sao Paulo, Dept Psiquiatria, Escola Paulista Med, LiNC, BR-04021002 Sao Paulo - Brazil
[3] Univ Fed Sao Paulo, Dept Radiol, Escola Paulista Med, BR-04021002 Sao Paulo - Brazil
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: Sleep; v. 33, n. 2, p. 243-251, FEB 1 2010.
Citações Web of Science: 19
Assunto(s):Sono   Privação de sono
Resumo

Objectives: To assess the influence of total or selective REM sleep deprivation on the dopamine transporter (DAT) densities and sleep patterns of healthy volunteers. Design: Prospective study. Setting: Evaluation of polysomnography recordings and DAT density after 4 nights of selective REM sleep deprivation followed by 3 nights of sleep recovery compared to a control group and a group that was subjected to 2 nights of total sleep deprivation. Single positron emission computed tomography and {[}(99m)Tc]TRODAT-1 were used to assess the cerebral DAT density in the striatum at baseline, after REM sleep deprivation and total sleep deprivation as well as after sleep recovery. Blood was collected daily to examine prolactin and estradiol levels, which were correlated with dopaminergic activity. Patients or Participants: Thirty healthy male volunteers ranging from 19 to 29 years of age were randomly assigned to one of three experimental groups after giving written informed consent (10 non-sleep deprived, 10 total sleep deprived, and 10 REM sleep deprived). Measurements and Results: Four nights of REM sleep deprivation and 2 nights of total sleep deprivation induced distinct and heterogeneous patterns of sleep recovery. No significant modulation of DAT availability was observed within groups. In the recovery nights, changes in cortisol, prolactin and estradiol concentrations were significantly correlated with specific sleep stages in the total and REM sleep deprived groups. In addition, DAT density was positively correlated with estradiol concentration and inversely associated with SWS latency only after total sleep deprivation. Conclusion: Our study demonstrates that although sleep deprivation did not promote significant alterations in DAT density within the striatum, there were significant correlations among transporter availability, hormonal concentrations and sleep parameters. (AU)

Processo FAPESP: 98/14303-3 - Center for Sleep Studies
Beneficiário:Sergio Tufik
Linha de fomento: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs
Processo FAPESP: 06/58276-8 - Avaliação da densidade do transportador dopaminérgico utilizando [99mtc]-trodat e SPECT após privação de sono
Beneficiário:Raquel Cristina Martins da Silva
Linha de fomento: Bolsas no Brasil - Mestrado