Spontaneous central apneas occur in the C57BL/6J mouse strain. 2008

Georg M Stettner, and Sébastien Zanella, and Peter Huppke, and Jutta Gärtner, and Gérard Hilaire, and Mathias Dutschmann
Department of Pediatrics and Pediatric Neurology, University Medicine Göttingen, Georg August University, Robert-Koch-Str. 40, D-37075 Göttingen, Germany. georg.stettner@med.uni-goettingen.de

Despite the clinical significance of central apneas in a wide range of disorders little is known about their pathogenesis. Research in this field has been hindered by the lack of appropriate animal models. Our goal was to determine whether the C57BL/6J mouse strain, which has an inherited predisposition for dysrhythmic breathing, exhibits spontaneous apneas. In vivo plethysmography of unanesthetized, unrestrained adult C57BL/6J mice revealed a regular occurrence of spontaneous apneas. In situ recordings from respiratory outputs (phrenic, vagal, hypoglossal nerves) in the working heart-brainstem preparation (WHBP) also showed spontaneous central apneas accompanied by laryngeal closure as indicated by tonic vagal postinspiratory activity and increase in subglottal pressure. The apneas were further characterized by a hypoglossal discharge with delayed onset compared to the tonic vagal postinspiratory activity. We conclude that spontaneous central apneas with active laryngeal closure occur in C57BL/6J mice. This mouse strain is a useful animal model to study neuronal mechanisms that underlie the generation of spontaneous central apneas.

UI MeSH Term Description Entries
D007002 Hypoglossal Nerve The 12th cranial nerve. The hypoglossal nerve originates in the hypoglossal nucleus of the medulla and supplies motor innervation to all of the muscles of the tongue except the palatoglossus (which is supplied by the vagus). This nerve also contains proprioceptive afferents from the tongue muscles. Cranial Nerve XII,Twelfth Cranial Nerve,Nerve XII,Nervus Hypoglossus,Cranial Nerve XIIs,Cranial Nerve, Twelfth,Cranial Nerves, Twelfth,Hypoglossal Nerves,Hypoglossus, Nervus,Nerve XII, Cranial,Nerve XIIs,Nerve XIIs, Cranial,Nerve, Hypoglossal,Nerve, Twelfth Cranial,Nerves, Hypoglossal,Nerves, Twelfth Cranial,Twelfth Cranial Nerves,XII, Nerve,XIIs, Nerve
D007830 Larynx A tubular organ of VOICE production. It is located in the anterior neck, superior to the TRACHEA and inferior to the tongue and HYOID BONE. Anterior Commissure, Laryngeal,Anterior Commissure, Larynx,Laryngeal Anterior Commissure,Laryngeal Posterior Commissure,Posterior Commissure, Laryngeal,Posterior Commissure, Larynx,Anterior Commissures, Laryngeal,Anterior Commissures, Larynx,Commissure, Laryngeal Anterior,Commissure, Laryngeal Posterior,Commissure, Larynx Anterior,Commissure, Larynx Posterior,Commissures, Laryngeal Anterior,Commissures, Laryngeal Posterior,Commissures, Larynx Anterior,Commissures, Larynx Posterior,Laryngeal Anterior Commissures,Laryngeal Posterior Commissures,Larynx Anterior Commissure,Larynx Anterior Commissures,Larynx Posterior Commissure,Larynx Posterior Commissures,Posterior Commissures, Laryngeal,Posterior Commissures, Larynx
D008810 Mice, Inbred C57BL One of the first INBRED MOUSE STRAINS to be sequenced. This strain is commonly used as genetic background for transgenic mouse models. Refractory to many tumors, this strain is also preferred model for studying role of genetic variations in development of diseases. Mice, C57BL,Mouse, C57BL,Mouse, Inbred C57BL,C57BL Mice,C57BL Mice, Inbred,C57BL Mouse,C57BL Mouse, Inbred,Inbred C57BL Mice,Inbred C57BL Mouse
D010525 Peripheral Nerves The nerves outside of the brain and spinal cord, including the autonomic, cranial, and spinal nerves. Peripheral nerves contain non-neuronal cells and connective tissue as well as axons. The connective tissue layers include, from the outside to the inside, the epineurium, the perineurium, and the endoneurium. Endoneurium,Epineurium,Perineurium,Endoneuriums,Epineuriums,Nerve, Peripheral,Nerves, Peripheral,Perineuriums,Peripheral Nerve
D010641 Phenotype The outward appearance of the individual. It is the product of interactions between genes, and between the GENOTYPE and the environment. Phenotypes
D010791 Phrenic Nerve The motor nerve of the diaphragm. The phrenic nerve fibers originate in the cervical spinal column (mostly C4) and travel through the cervical plexus to the diaphragm. Nerve, Phrenic,Nerves, Phrenic,Phrenic Nerves
D010991 Plethysmography Recording of change in the size of a part as modified by the circulation in it. Plethysmographies
D001933 Brain Stem The part of the brain that connects the CEREBRAL HEMISPHERES with the SPINAL CORD. It consists of the MESENCEPHALON; PONS; and MEDULLA OBLONGATA. Brainstem,Truncus Cerebri,Brain Stems,Brainstems,Cerebri, Truncus,Cerebrus, Truncus,Truncus Cerebrus
D003627 Data Interpretation, Statistical Application of statistical procedures to analyze specific observed or assumed facts from a particular study. Data Analysis, Statistical,Data Interpretations, Statistical,Interpretation, Statistical Data,Statistical Data Analysis,Statistical Data Interpretation,Analyses, Statistical Data,Analysis, Statistical Data,Data Analyses, Statistical,Interpretations, Statistical Data,Statistical Data Analyses,Statistical Data Interpretations
D004594 Electrophysiology The study of the generation and behavior of electrical charges in living organisms particularly the nervous system and the effects of electricity on living organisms.

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