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000888984 1001_ $$0P:(DE-HGF)0$$aRefisch, Alexander$$b0
000888984 245__ $$aA common variation in HCN1 is associated with heart rate variability in schizophrenia
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000888984 520__ $$aBackgroundThere is growing evidence for a shared genetic basis between schizophrenia risk and cardiovascular disease. Reduced efferent vagal activity, indexed by reduced heart rate variability (HRV), has been consistently described in patients with schizophrenia and may potentially contribute to the increased cardiovascular risk in these patients. In this study, we tested the hypothesis whether the established schizophrenia risk variant HCN1 rs16902086 (A > G) is associated with reduced HRV.MethodsWe analyzed the risk status of HCN1 rs16902086 (AG/GG vs. AA genotype) in 83 unmedicated patients with schizophrenia and 96 healthy controls and investigated genotype-related impacts on various HRV parameters.ResultsWe observed significantly increased resting heart rates and a marked decrease of vagal modulation in our patient cohort. Strikingly, HCN1 rs16902086 (A > G) was associated with reduced HRV parameters in patients only. A trend towards more pronounced HRV deviations was observed in homozygous (GG) compared to heterozygous patients (AG).ConclusionWe present first evidence for a genetic risk factor that is associated with decreased vagal modulation in unmedicated patients with schizophrenia. Moreover, our findings suggest that HCN1 might be involved in reduced vagal modulation and possibly in increased cardiac mortality in schizophrenia patients. Thus, our data indicate that reduced vagal modulation might be an endophenotype of schizophrenia.
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000888984 7001_ $$0P:(DE-HGF)0$$aChung, Ha-Yeun$$b1
000888984 7001_ $$0P:(DE-HGF)0$$aKomatsuzaki, Shoko$$b2
000888984 7001_ $$0P:(DE-HGF)0$$aSchumann, Andy$$b3
000888984 7001_ $$0P:(DE-Juel1)156419$$aMühleisen, Thomas W.$$b4
000888984 7001_ $$0P:(DE-HGF)0$$aNöthen, Markus M.$$b5
000888984 7001_ $$0P:(DE-HGF)0$$aHübner, Christian A.$$b6
000888984 7001_ $$0P:(DE-HGF)0$$aBär, Karl-Jürgen$$b7$$eCorresponding author
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000888984 8564_ $$uhttps://juser.fz-juelich.de/record/888984/files/pdf.pdf$$yPublished on 2020-11-18. Available in OpenAccess from 2021-11-18.
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