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P2RX7: Expression Responds to Sleep Deprivation and Associates with Rapid Cycling in Bipolar Disorder Type 1

Backlund, Lena (författare)
Lavebratt, Catharina (författare)
Frisen, Louise (författare)
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Nikamo, Pernilla (författare)
Sudic, Dzana Hukic (författare)
Träskman Bendz, Lil, (författare)
Lunds universitet, Lund University, Medicinska fakulteten, Faculty of Medicine, Institutionen för kliniska vetenskaper, Lund, Department of Clinical Sciences, Lund, Sektion IV, Section IV, Psykiatri, Lund, Psychiatry (Lund)
Landen, Mikael (författare)
Edman, Gunnar (författare)
Vawter, Marquis P. (författare)
Osby, Urban (författare)
Schalling, Martin (författare)
Traskman-Bendz, L. (författare)
Landén, Mikael, 1966- (författare)
Göteborgs universitet, Institutionen för neurovetenskap och fysiologi, Gothenburg University, Institute of Neuroscience and Physiology
Landen, M, (författare)
Karolinska Institutet
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Göteborgs universitet Sahlgrenska akademin. Institutionen för neurovetenskap och fysiologi. 
2012
Engelska.
Ingår i: Plos One. - 1932-6203. ; 7:8
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  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • Context: Rapid cycling is a severe form of bipolar disorder with an increased rate of episodes that is particularly treatment-responsive to chronotherapy and stable sleep-wake cycles. We hypothesized that the P2RX7 gene would be affected by sleep deprivation and be implicated in rapid cycling. Objectives: To assess whether P2RX7 expression is affected by total sleep deprivation and if variation in P2RX7 is associated with rapid cycling in bipolar patients. Design: Gene expression analysis in peripheral blood mononuclear cells (PBMCs) from healthy volunteers and case-case and case-control SNP/haplotype association analyses in patients. Participants: Healthy volunteers at the sleep research center, University of California, Irvine Medical Center (UCIMC), USA (n = 8) and Swedish outpatients recruited from specialized psychiatric clinics for bipolar disorder, diagnosed with bipolar disorder type 1 (n = 569; rapid cycling: n = 121) and anonymous blood donor controls (n = 1,044). Results: P2RX7 RNA levels were significantly increased during sleep deprivation in PBMCs from healthy volunteers (p = 2.3*10(-9)). The P2RX7 rs2230912_A allele was more common (OR = 2.2, p = 0.002) and the ACGTTT haplotype in P2RX7 (rs1718119 to rs1621388) containing the protective rs2230912_G allele (OR = 0.45-0.49, p = 0.003-0.005) was less common, among rapid cycling cases compared to non-rapid cycling bipolar patients and blood donor controls. Conclusions: Sleep deprivation increased P2RX7 expression in healthy persons and the putatively low-activity P2RX7 rs2230912 allele A variant was associated with rapid cycling in bipolar disorder. This supports earlier findings of P2RX7 associations to affective disorder and is in agreement with that particularly rapid cycling patients have a more vulnerable diurnal system.

Ämnesord

MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin -- Psykiatri (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine -- Psychiatry (hsv//eng)
MEDICIN OCH HÄLSOVETENSKAP  -- Medicinska grundvetenskaper -- Neurovetenskaper (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Basic Medicine -- Neurosciences (hsv//eng)

Nyckelord

single-nucleotide polymorphisms
neurotrophic factor bdnf
linkage
disequilibrium
synthase kinase-3
p2x(7) receptors
circadian clock
mood disorders
protein-kinase
phase-shifts
gene
netics
v150b
p1063
netics
v153b
p847
netics
v150b
p295
netics
v141b
p374

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