Kron, Miriam

[["dc.bibliographiccitation.firstpage","315"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","The Journal of Physiology"],["dc.bibliographiccitation.lastpage","327"],["dc.bibliographiccitation.volume","583"],["dc.contributor.author","Kron, Miriam"],["dc.contributor.author","Moerschel, Michael"],["dc.contributor.author","Reuter, Julia"],["dc.contributor.author","Zhang, W."],["dc.contributor.author","Dutschmann, Mathias"],["dc.date.accessioned","2018-11-07T10:59:36Z"],["dc.date.available","2018-11-07T10:59:36Z"],["dc.date.issued","2007"],["dc.description.abstract","The Kolliker-Fuse nucleus (KF), part of the respiratory network, is involved in the modulation of respiratory phase durations in response to peripheral and central afferent inputs. The KF is immature at birth. Developmental changes in its physiological and anatomical properties have yet to be investigated. Since brain-derived neurotrophic factor (BDNF) is of major importance for the maturation of neuronal networks, we investigated its effects on developmental changes in the KF on different postnatal days (neonatal, P1-5; intermediate, P6-13;juvenile, P14-21) by analysing single neurones in the in vitro slice preparation and network activities in the perfased brainstem preparation in situ. The BDNF had only weak effects on the frequency of mixed excitatory and inhibitory spontaneous postsynaptic currents (sPSCs) in neonatal slice preparations. Postnatally, in the intermediate and juvenile age groups, a significant augmentation of the sPSC frequency was observed in the presence of 100 pm BDNF (+23.5 +/- 12.6 and +76.7 +/- 28.4%, respectively). Subsequent analyses of BDNF effects on evoked excitatory postsynaptic currents (eEPSCs) revealed significant enhancement of eEPSC amplitude of +20.8 +/- 7.0% only in juvenile stages (intermediates, -13.2 +/- 4.8%). On the network level, significant modulation of phrenic nerve activity following BDNF microinjection into the KF was also observed only in juveniles. The data suggest that KF neurones are subject to BDNF-mediated fast synaptic modulation after completion of postnatal maturation. After maturation, BDNF contributes to modulation of fast excitatory neurotransmission in respiratory-related KF neurones. This may be important for network plasticity associated with the processing of afferent information."],["dc.identifier.doi","10.1113/jphysiol.2007.134726"],["dc.identifier.isi","000249178600024"],["dc.identifier.pmid","17569735"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/50744"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Blackwell Publishing"],["dc.relation.issn","0022-3751"],["dc.title","Developmental changes in brain-derived neurotrophic factor-mediated modulations of synaptic activities in the pontine Kolliker-Fuse nucleus of the rat"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","72"],["dc.bibliographiccitation.issue","1-2"],["dc.bibliographiccitation.journal","Respiratory Physiology & Neurobiology"],["dc.bibliographiccitation.lastpage","79"],["dc.bibliographiccitation.volume","164"],["dc.contributor.author","Dutschmann, Mathias"],["dc.contributor.author","Moerschel, Michael"],["dc.contributor.author","Reuter, Julia"],["dc.contributor.author","Zhang, W."],["dc.contributor.author","Gestreau, Christian"],["dc.contributor.author","Stettner, Georg M."],["dc.contributor.author","Kron, Miriam"],["dc.date.accessioned","2018-11-07T11:08:02Z"],["dc.date.available","2018-11-07T11:08:02Z"],["dc.date.issued","2008"],["dc.description.abstract","The shape of the three-phase respiratory motor pattern (inspiration, postinspiration, late expiration) is controlled by a central pattern generator (CPG) located in the ponto-medullary brainstem. Synaptic interactions between and within specific sub-compartments of the CPG are subject of intensive research. This review addresses the neural control of postinspiratory activity as the essential determinant of inspiratory/expiratory phase duration. The generation of the postinspiratory phase depends on synaptic interaction between neurones of the nucleus tractus solitarii (NTS), which relay afferent inputs from pulmonary stretch receptors, and the pontine Kolliker-Fuse nucleus (KF) as integral parts of the CPG. Both regions undergo significant changes during the first three postnatal weeks in rodents. Developmental changes in glutamatergic synaptic functions and its modulation by brain-derived neurotrophic factor may have implications in synaptic plasticity within the NTS/KF axis. We propose that dependent on these developmental changes, the CPG becomes permissive for short- and long-term plasticity associated with environmental, metabolic and behavioural adaptation of the breathing pattern. (C) 2008 Elsevier B.V. All rights reserved."],["dc.identifier.doi","10.1016/j.resp.2008.06.013"],["dc.identifier.isi","000261248700010"],["dc.identifier.pmid","18620081"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/52701"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.relation.issn","1569-9048"],["dc.title","Postnatal emergence of synaptic plasticity associated with dynamic adaptation of the respiratory motor pattern"],["dc.type","review"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","232"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Respiratory Physiology & Neurobiology"],["dc.bibliographiccitation.lastpage","235"],["dc.bibliographiccitation.volume","159"],["dc.contributor.author","Dutschmann, Mathias"],["dc.contributor.author","Kron, Miriam"],["dc.contributor.author","Moerschel, Michael"],["dc.contributor.author","Gestreau, Christian"],["dc.date.accessioned","2018-11-07T10:53:45Z"],["dc.date.available","2018-11-07T10:53:45Z"],["dc.date.issued","2007"],["dc.description.abstract","Orexins (splice variants A and B) are hypothalamic neuropeptides that have essential functions in control of arousal and nutrition. Lack of Orexins is strongly associated with narcolepsy and sleep disordered breathing. However, the role of Orexins and particularly that of Orexin-B (OXB), in respiratory centres controlling upper-airway patency are less defined. In the present study we performed microinjections of OXB into the pontine Kolliker-Fuse nucleus (KF) of the dorsolateral pons, since this nucleus is particularly involved in the pre-motor control of upper airway muscles. The OXB mediated effects on heart, phrenic (PNA) and hypoglossal (XII-A) nerve activities were analysed in an in situ perfused brainstem preparation. Injection Of OXB into the KF evoked significant augmentation of the respiratory frequency. Importantly, OXB provoked particularly prolonged pre-inspiratory discharge of the XII nerve, while no cardiovascular response was observed after KF microinjections. In summary, OXB in the KF exerts an excitatory effect on XII pre-motoneurones. Since pre-inspiratory activity of the XII is important for the decrease in upper airway resistance during inspiration, we conclude that OXB release in the KF has strong implications in the state-dependent control of upper airway patency under physiological and pathophysiological conditions. (C) 2007 Elsevier B.V. All rights reserved."],["dc.identifier.doi","10.1016/j.resp.2007.06.004"],["dc.identifier.isi","000251070900017"],["dc.identifier.pmid","17652033"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/49412"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.relation.issn","1569-9048"],["dc.title","Activation of Orexin B receptors in the pontine Kolliker-Fuse nucleus modulates pre-inspiratory hypoglossal motor activity in rat"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]