Increased Disease Activity is Associated with Altered Sleep Architecture in an Experimental Model of Systemic Lupus Erythematosus

Increased Disease Activity is Associated with Altered Sleep Architecture in an Experimental Model of Systemic Lupus Erythematosus

Author Palma, Beatriz Duarte Autor UNIFESP Google Scholar
Tufik, Sergio Autor UNIFESP Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Abstract Study Objectives: The aim of this study was to evaluate sleep patterns during the course of the disease in (NZB/NZW)F(1) mice, an experimental model of systemic lupus erythematosus (SLE).Design: Female mice were implanted with electrodes for chronic recording of sleep-wake cycles during the entire experimental phase (9, 19, and 29 weeks of age). The disease course was also assessed. At each time-point, blood samples were collected from the orbital plexus to evaluate serum antinuclear antibodies (ANA), which are important serologic parameters of disease evolution. Pain perception was also evaluated.Measurements and Results: During the dark phase, (NZB/NZW)F(1) mice aged 19 weeks spent more time in sleep, and, as a consequence, the total waking time was lower when compared with earlier periods. An augmented number of sleep-stage transitions and microarousals were observed at the 29(th) week of life in both light and dark phases. At this same time-point, the mice showed lower pain thresholds than they had at 9 weeks of life. The disease status was confirmed; the entire group of mice at 29 weeks of life showed positive ANA with high titer levels.Conclusions: The sleep-recording data showed that, during the progress and severe phases of the disease (19 and 29 wks of age, respectively), sleep architecture is altered. According to these results, increased sleep fragmentation, disease activity, and pain sensitivity are features observed in these mice, similar to symptoms of SLE.
Keywords Antinuclear antibody
lupus
(NZB/NZW)F(1) mice
pain
sleep recording
Language English
Sponsor Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
AFIP
Grant number FAPESP: 06/57158-1
FAPESP: 98/14303-3
Date 2010-09-01
Published in Sleep. Westchester: Amer Acad Sleep Medicine, v. 33, n. 9, p. 1244-1248, 2010.
ISSN 0161-8105 (Sherpa/Romeo, impact factor)
Publisher Amer Acad Sleep Medicine
Extent 1244-1248
Origin https://doi.org/10.1093/sleep/33.9.1244
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000281473600017
URI http://repositorio.unifesp.br/11600/45610

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