General articleWithin-breath changes of airway calibre in patients with airflow obstruction by continuous measurement of respiratory impedance
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Intra-breath oscillometry for assessing respiratory outcomes
2021, Current Opinion in PhysiologyCitation Excerpt :Horowitz et al. [23•] investigated the theoretical and signal processing requirements to follow continuous changes in a time-varying impedance with forced oscillations; these studies [22•,23•] were the first to illustrate the characteristic changes in Rrs with tidal V’ and V in human subjects. The marked intra-breath fluctuations in Rrs were also documented with measurements at 10 Hz in normal subjects and in patients with airway obstruction [24,25], and in subjects after and without laryngectomy [26]. The dependences of Rrs on V’ and V were first assessed quantitatively by Peslin et al. [27] in healthy subjects with 10, 20 and 30 Hz sinusoidal oscillations and multilinear regression.
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2004, Journal of Biological ChemistryCitation Excerpt :Neurodegeneration and JNK Activation Induced by 6-OHDA—The neurotoxin 6-OHDA is a widely used experimental stimulus for the death of (dopaminergic) neurons in vivo and in vitro. Its various effects of action comprise the generation of ROS with a subsequent imbalance of redox potential regulation, lipid peroxidation, or DNA strand breaks (reviewed in Refs. 50 and 51). Independent of ROS formation, 6-OHDA interacts with and inhibits the complex I in isolated brain mitochondria (52–54), but the relevance of complex I inhibition for cell death has not yet been proven (55).
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