Abstract:
:The contribution of four transport pathways to Li+ influx in human, chicken and eel erythrocytes was studied. All pathways were measured simultaneously in each kind of blood sample to avoid possible temporal variations in transport parameters. We found that: 1) Li+ influx via Na(+)-K+ pump increased 2-3 fold in the order human < eel < chicken; 2) by the countertransport exchange system lithium influx increases its variance between 15% and 35% when saline medium is replaced by choline Cl; 3) the anion exchange system (band 3 protein) shows very little interindividual variability on the lithium influx; 4) the lithium leak pathway, for human and eel red blood cells, is the major contribution, whereas it is negligible for chicken erythrocytes. It is concluded that a similar transport system exists in the red cell membranes of the three species which can transport lithium. However, the exchange system does not exhibit identical transport characteristics in the three species and shows a marked inter- and intra-species variability in maximum transport capacity and some differences in susceptibility towards the inhibitors.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Romano L,Battaglia M,Cordì R,Rinaldi C,Leucci S,Amato Adoi
10.1006/bbrc.1995.1635subject
Has Abstractpub_date
1995-05-05 00:00:00pages
119-25issue
1eissn
0006-291Xissn
1090-2104pii
S0006-291X(85)71635-Xjournal_volume
210pub_type
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