Abstract:
:Reduced glutamatergic activity and energy metabolism in the dorsolateral prefrontal cortex (DLPFC) have been described in schizophrenia. Glycogenolysis in astrocytes is responsible for providing neurons with lactate as a transient energy supply helping to couple glutamatergic neurotransmission and glucose utilization in the brain. This mechanism could be disrupted in schizophrenia. The aim of this study was to explore whether the protein levels of the astrocyte isoform of glycogen phosphorylase (PYGM), key enzyme of glycogenolysis, and the isoform A of Ras-related C3 botulinum toxin substrate 1 (RAC1), a kinase that regulates PYGM activity, are altered in the postmortem DLPFC of chronic schizophrenia patients (n=23) and matched controls (n=23). We also aimed to test NMDAR blockade effect on these proteins in the mouse cortex and cortical astrocytes and antipsychotic treatments in rats. Here we report a reduction in PYGM and RAC1 protein levels in the DLPFC in schizophrenia. We found that treatment with the NMDAR antagonist dizocilpine in mice as a model of psychosis increased PYGM and reduced RAC1 protein levels. The same result was observed in rat cortical astroglial-enriched cultures. 21-day haloperidol treatment increased PYGM levels in rats. These results show that PYGM and RAC1 are altered in the DLPFC in chronic schizophrenia and are controlled by NMDA signalling in the rodent cortex and cortical astrocytes suggesting an altered NMDA-dependent glycogenolysis in astrocytes in schizophrenia. Together, this study provides evidence of a NMDA-dependent transient local energy deficit in neuron-glia crosstalk in schizophrenia, contributing to energy deficits of the disorder.
journal_name
Schizophr Resjournal_title
Schizophrenia researchauthors
Pinacho R,Vila E,Prades R,Tarragó T,Castro E,Ferrer I,Ramos Bdoi
10.1016/j.schres.2016.04.024subject
Has Abstractpub_date
2016-11-01 00:00:00pages
37-43issue
1-3eissn
0920-9964issn
1573-2509pii
S0920-9964(16)30169-4journal_volume
177pub_type
杂志文章abstract:OBJECTIVE:While "dual diagnosis" involving both psychiatric and substance use disorders has long been a focus of schizophrenia research, recent studies have advocated for a shift of focus to multimorbidity, addressing comorbidity from both additional psychiatric disorders and substance use disorders. We hypothesized th...
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pub_type: 杂志文章,随机对照试验
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更新日期:2018-11-01 00:00:00
abstract::Psychotic experiences are far more common in the population than psychotic disorder. They are associated with a number of adverse outcomes but there has been little research on associations with functioning and distress. We wished to investigate functioning and distress in a community sample of adolescents with psycho...
journal_title:Schizophrenia research
pub_type: 杂志文章
doi:10.1016/j.schres.2015.03.020
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abstract::Patients with schizophrenia exhibit impairments in prepulse inhibition (PPI) of the startle response. Available data suggest that atypical antipsychotics may be more effective than typical antipsychotics in improving PPI deficits in schizophrenia. However, previous studies have used between-subjects rather than longit...
journal_title:Schizophrenia research
pub_type: 杂志文章
doi:10.1016/j.schres.2009.09.035
更新日期:2009-12-01 00:00:00
abstract::Although factor scores are commonly used to interpret the Weschsler Adult Intelligence Scale--Revised (WAIS-R), the WAIS-R factor structure has not been investigated in patients with schizophrenia. We used confirmatory factor analysis (CFA) to examine five latent construct models in 169 males with schizophrenia. The W...
journal_title:Schizophrenia research
pub_type: 杂志文章
doi:10.1016/s0920-9964(98)00090-5
更新日期:1998-11-09 00:00:00
abstract:BACKGROUND:The intrusion of associations into the utterances of schizophrenic individuals typically disrupts the coherence of the patient's utterances. Recent theoretical formulations of these phenomena have emphasized the hyperactivity) of associational networks in such language disturbance (e.g., Maher, B.A. 2003 Sch...
journal_title:Schizophrenia research
pub_type: 杂志文章
doi:10.1016/j.schres.2005.05.017
更新日期:2005-10-15 00:00:00
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journal_title:Schizophrenia research
pub_type: 杂志文章
doi:10.1016/j.schres.2004.02.002
更新日期:2004-11-01 00:00:00
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journal_title:Schizophrenia research
pub_type: 杂志文章
doi:10.1016/0920-9964(92)90049-b
更新日期:1992-07-01 00:00:00
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journal_title:Schizophrenia research
pub_type: 杂志文章
doi:10.1016/j.schres.2018.12.005
更新日期:2019-04-01 00:00:00
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journal_title:Schizophrenia research
pub_type: 临床试验,杂志文章,多中心研究
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更新日期:2011-08-01 00:00:00
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journal_title:Schizophrenia research
pub_type: 杂志文章
doi:10.1016/j.schres.2015.08.027
更新日期:2015-12-01 00:00:00
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journal_title:Schizophrenia research
pub_type: 杂志文章
doi:10.1016/j.schres.2018.11.028
更新日期:2019-04-01 00:00:00
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pub_type: 杂志文章
doi:10.1016/s0920-9964(01)00175-x
更新日期:2001-10-01 00:00:00
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journal_title:Schizophrenia research
pub_type: 杂志文章
doi:10.1016/j.schres.2008.07.007
更新日期:2008-10-01 00:00:00
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pub_type: 杂志文章
doi:10.1016/j.schres.2020.09.025
更新日期:2020-10-01 00:00:00
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pub_type: 杂志文章
doi:10.1016/0920-9964(94)00034-6
更新日期:1995-01-01 00:00:00
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pub_type: 杂志文章
doi:10.1016/j.schres.2020.05.056
更新日期:2020-08-01 00:00:00
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journal_title:Schizophrenia research
pub_type: 杂志文章
doi:10.1016/j.schres.2016.03.022
更新日期:2016-11-01 00:00:00
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journal_title:Schizophrenia research
pub_type: 杂志文章
doi:10.1016/j.schres.2007.09.021
更新日期:2008-03-01 00:00:00
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journal_title:Schizophrenia research
pub_type: 杂志文章,meta分析
doi:10.1016/j.schres.2007.04.022
更新日期:2008-03-01 00:00:00
abstract::Mitochondria have been linked to the etiology of schizophrenia (SZ). However, studies of mitochondria in SZ might be confounded by the effects of pharmacological treatment with antipsychotic drugs (APDs) and other common medications. This review summarizes findings on relevant mitochondria mechanisms underlying SZ, an...
journal_title:Schizophrenia research
pub_type: 杂志文章
doi:10.1016/j.schres.2019.09.007
更新日期:2020-03-01 00:00:00
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journal_title:Schizophrenia research
pub_type: 杂志文章
doi:10.1016/s0920-9964(00)00014-1
更新日期:2000-12-15 00:00:00
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pub_type: 杂志文章
doi:10.1016/j.schres.2019.11.024
更新日期:2020-01-01 00:00:00
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journal_title:Schizophrenia research
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.schres.2004.06.009
更新日期:2005-06-15 00:00:00
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journal_title:Schizophrenia research
pub_type: 杂志文章
doi:10.1016/j.schres.2013.07.044
更新日期:2013-10-01 00:00:00
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pub_type: 杂志文章
doi:10.1016/s0920-9964(00)00036-0
更新日期:2000-12-15 00:00:00
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journal_title:Schizophrenia research
pub_type: 杂志文章,评审
doi:10.1016/j.schres.2015.04.006
更新日期:2015-07-01 00:00:00
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journal_title:Schizophrenia research
pub_type: 杂志文章
doi:10.1016/j.schres.2012.09.007
更新日期:2012-12-01 00:00:00
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journal_title:Schizophrenia research
pub_type: 杂志文章
doi:10.1016/j.schres.2017.07.021
更新日期:2018-03-01 00:00:00
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pub_type: 杂志文章
doi:10.1016/0920-9964(92)90028-4
更新日期:1992-12-01 00:00:00
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journal_title:Schizophrenia research
pub_type: 杂志文章,评审
doi:10.1016/s0920-9964(00)00022-0
更新日期:2001-01-15 00:00:00