The influence of erythrocyte maturity on ion transport and membrane lipid composition in the rat

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985823%3A_____%2F16%3A00458522" target="_blank" >RIV/67985823:_____/16:00458522 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/16:10333275

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

The influence of erythrocyte maturity on ion transport and membrane lipid composition in the rat

Original language description

Significant relationship between ion transport and membrane lipid composition (cholesterol, total phospholipids and sphingomyelins) were found in erythrocytes of salt hypertensive Dahl rats. In these animals mean cellular hemoglobin content correlated negatively with Na+-K+ pump activity and Na+ leak but positively with Na+-K+ cotransport activity. Immature erythrocytes exhibit lower mean cellular hemoglobin content (MCHC) than mature ones. The aim of the present study was to find a relationship between erythrocyte maturity, membrane lipid composition and ion transport activity in Wistar rats aged three months which were subjected to repeated hemorrhage (blood loss 2 ml/day for 6 days) to enrich circulating erythrocytes with immature forms. Immature and mature erythrocyte fractions in control and hemorrhaged rats were separated by repeated centrifugation. Hemorrhaged rats had increased number of reticulocytes but reduced hematocrit and MCHC compared to control rats. Immature erythrocytes of hemorrhaged rats differed from mature ones of control animals by elevated Na+-K+ pump activity, reduced Na+-K+ cotransport activity and increased Rb+ leak. These ion transport changes in immature erythrocytes were accompanied by higher concentration of total phospholipids in their cell membranes. Membrane phospholipid content correlated positively with Na+-K+ pump activity and cation leaks but negatively with Na+-K+ cotransport activity. Moreover, they were also negatively related with MCHC which correlated negatively with Na+-K+ pump activity and Rb+ leak but positively with Na+- K+ cotransport activity. Thus certain abnormalities of erythrocyte ion transport and membrane lipid composition detected in hypertensive animals might be caused by higher incidence of immature cells.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

ED - Physiology

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physiological Research

ISSN

0862-8408

e-ISSN

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Volume of the periodical

65

Issue of the periodical within the volume

1

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

9

Pages from-to

91-99

UT code for WoS article

000377529800010

EID of the result in the Scopus database

2-s2.0-84963830443