Search for ion-cyclotron resonance in an Na+-transport system

✍ Scribed by Abraham R. Liboff; W. C. Parkinson

• Publisher: John Wiley and Sons
• Year: 1991
• Tongue: English
• Weight: 433 KB
• Volume: 12
• Category: Article
• ISSN: 0197-8462
• DOI: 10.1002/bem.2250120203

✦ Synopsis

Colonic tissue from the turtle (Psrudemys scriptu) was exposed in a Ussing chamber to simultaneously applied static and time-varying magnetic fields. Transepithelial differences of potential were monitored as frequency of the AC field was varied continuously or in discrete steps from 3 to 770 Hz. Density of the DC field was varied from 10 to 220 pT and that of the AC field from 1 to 20 pT. Short-circuit currents through tissue were monitored for changes that might have been observed under ion-cyclotron resonance (ICR) conditions for each of several ions: H i , L i + , Na+, K + , Ca2+, and C1-. N o discernible changes of transepithelial current were observed. The negative findings are discussed in relation to positive and negative findings that have appeared in the literature.