Frequency Spectrum of Transepithelial Potential Difference Reveals Transport-Related Oscillations
نویسندگان
چکیده
منابع مشابه
Measurement of human nasal potential difference to teach the theory of transepithelial fluid transport.
We describe a novel student course in membrane physiology in which students record their own nasal potential difference, i.e., the transepithelial potential difference of the respiratory mucosa in the nose. The nasal potential difference monitors directly, and in vivo, changes in the apical cell membrane potential of the respiratory mucosa induced by activators and inhibitors of ion channel act...
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The Malpighian tubule of Drosophila melanogaster is a useful model system for studying the regulation of epithelial ion transport. In acutely isolated tubules, the transepithelial potential (TEP) undergoes large oscillations in amplitude with a period of approximately 30s. The TEP oscillations are diminished by reductions in the peritubular chloride concentration in a manner consistent with the...
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The aim of the present study was to investigate the role of the autonomic nervous system in the regulation of airway epithelial ion transport in vivo. Rabbits were anaesthetized and mechanically-ventilated through a cannula inserted above the carina. The upper tracheal mucosa was exposed, and the electrical potential difference (PD) between the mucosal surface and the submucosal space was conti...
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The main underlying physiologic abnormality in cystic fibrosis (CF) is dysfunction of the CF transmembrane conductance regulator (CFTR), which results in abnormal transport of sodium and chloride across epithelial surfaces. CFTR function could be tested in vivo using measurements of nasal transepithelial potential difference (PD). Nasal measurements show characteristic features of CF epithelia,...
متن کاملdifference ( Nd ) event - related potential
Frontal and temporal lobe sources for electrical activity associated with auditory controlled attention (negative difference, Nd) were sought for comparison with those reported to arise from the earlier detection of stimulus-change (mismatch negativity, MMN: Jemel et al. 2002). In two sessions a month apart (T1 and T2), 14 subjects were presented with a 3-tone oddball passively, then as a discr...
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ژورنال
عنوان ژورنال: Biophysical Journal
سال: 2009
ISSN: 0006-3495
DOI: 10.1016/j.bpj.2009.05.063