Involvement of the Autonomic Nervous System in Diurnal Variation of Corrected QT Intervals in Common Marmosets
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- Honda Masaki
- Research Division, Chugai Pharmaceutical Co., Ltd., Japan Department of Pharmacology, School of Pharmaceutical Sciences, University of Shizuoka, Japan
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- Komatsu Ryuichi
- Research Division, Chugai Pharmaceutical Co., Ltd., Japan
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- Isobe Takehito
- Research Division, Chugai Pharmaceutical Co., Ltd., Japan
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- Tabo Mitsuyasu
- Research Division, Chugai Pharmaceutical Co., Ltd., Japan
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- Ishikawa Tomohisa
- Department of Pharmacology, School of Pharmaceutical Sciences, University of Shizuoka, Japan
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Our previous study has shown that the corrected QT (QTc) interval of the electrocardiogram is longer during the dark period than during the light period in telemetered common marmosets. In the present study, we investigated the involvement of sympathetic and parasympathetic nervous activities in the changes of QTc interval associated with the light–dark cycle.Telemetry transmitters were implanted in six common marmosets to continuously record the electrocardiogram. The QT intervals obtained were corrected for the RR interval by applying individual probabilistic QT-rate correction formulae. Power spectral analysis of heart rate variability was performed to quantify each autonomic nervous function. Changes in QTc intervals and autonomic nervous tones were associated with the light–dark cycle. Parasympathetic nervous activity and QTc intervals significantly increased by approximately 10 ms during the dark period.Atropine, a muscarinic receptor antagonist, suppressed the increased parasympathetic tone and QTc prolongation during the dark period. In contrast, propranolol, a β-adrenoceptor antagonist, decreased the sympathetic activity and increased QTc intervals during the light period. These results suggest that the parasympathetic nerve functions prolong QTc intervals during the dark period, while the sympathetic nerve functions shorten them during the light period in common marmosets.
収録刊行物
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- Journal of Pharmacological Sciences
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Journal of Pharmacological Sciences 121 (2), 131-137, 2013
公益社団法人 日本薬理学会
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詳細情報 詳細情報について
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- CRID
- 1390282680157708672
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- NII論文ID
- 10031156942
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- NII書誌ID
- AA11806667
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- COI
- 1:CAS:528:DC%2BC3sXjvVyju7Y%3D
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- ISSN
- 13478648
- 13478613
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- NDL書誌ID
- 024275031
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- PubMed
- 23363785
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- PubMed
- CiNii Articles
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