Home 
General Physiology and Biophysics 2020 General Physiology and Biophysics Vol.39, No.6, p.505–518, 2020
General Physiology and Biophysics 2020 General Physiology and Biophysics Vol.39, No.6, p.505–518, 2020
Journal info
|
||
Select Journal
Journals
Bratislava Medical Journal Endocrine Regulations General Physiology and Biophysics 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 Neoplasma Acta Virologica Studia Psychologica Cardiology Letters Psychológia a patopsych. dieťaťa Kovove Materialy-Metallic Materials Slovenská hudbaWebshop Cart
Your Cart is currently empty.
Info: Your browser does not accept cookies. To put products into your cart and purchase them you need to enable cookies.
General Physiology and Biophysics Vol.39, No.6, p.505–518, 2020 |
||
| Title: Species-dependent variations in the dielectric activity of membrane skeleton of erythrocytes | ||
| Author: I. T. Ivanov, B. K. Paarvanova, B. B. Tacheva, T. Slavov | ||
| Abstract: Previously detected βsp and γ1sp dielectric relaxations on the spectrin-based membrane skeleton (MS) of human red blood cells (RBCs) have been shown sensitive to the attachment of MS to the lipid-protein membrane. Such relaxations were now detected on the MS of mammal (rat, horse, bovine, sheep and goat) and “unstrained” chicken RBCs. To become “unstrained” chicken RBCs were subjected consecutively to cold (4°C, >20 h) and either colchicine (15 mM) or vinblastine (30 μM) (4°C, 1 h) that led to irreversible disassembly of their marginal band and an additional portion of their cytoskeleton. With the exception of bovine RBCs, the critical frequency (fc) of either relaxation increased, although at different rates, with the decrease in the volume of RBC species. The strong increase in fc of γ1sp relaxation from 2.5 MHz (“unstrained” chicken RBCs) to 13 MHz (goat RBCs) could indicate denser state of MS in smaller RBC species. The low values of fc of γ1sp relaxation in “unstrained” chicken RBCs (2.5 MHz) and bovine RBCs (4.5 instead of 9 MHz) could be related to their extraordinary thermal stability at the temperature of spectrin denaturation. |
||
| Keywords: Chicken erythrocyte, Mammal erythrocyte, Membrane skeleton, Dielectric relaxation, Spectrin | ||
| Published online: 17-Nov-2020 | ||
| Year: 2020, Volume: 39, Issue: 6 | Page From: 505, Page To: 518 | |
| doi:10.4149/gpb_2020034 |
||
|
|
 download file |
|