Powered by OpenAIRE graph
Found an issue? Give us feedback
addClaim

Erythrocyte aging and malaria.

Authors: I W, Sherman; S, Eda; E, Winograd;

Erythrocyte aging and malaria.

Abstract

The human malaria parasite, Plasmodium falciparum, ages the red blood cell during its intracellular development. During this process of erythrocyte senescence the parasitized cell becomes less dense and deformable, its biconcave disc shape becomes more spherical and is covered with microscopic protuberances (knobs); the amounts of membrane cholesterol and phospholipids are altered and phosphatidylserine (PS) is externalized. The malaria-infected cell is osmotically fragile, more permeable to a wide variety of molecules via new permeation pathways (NPP), and there is surface deposition of immunoglobulins and complement. There are declines in sialic acid, reduced glutathione, tocopherol and ATP. Hemichromes are deposited on the inner surface of the red cell membrane and there is clustering of the anion transporter, band 3 protein, as well as exposure of neoantigens which contribute to antigenic variation and adhesivity of the parasitized erythrocyte. These time-dependent changes result from oxidative assault and a combination of factors, including a decline in levels of anti-oxidants and ATP coupled with an enhanced flux of ions especially calcium. Despite these parasite-induced age effects P. falciparum is able to avoid destruction by splenic removal through microvessel sequestration in the deep tissues via PS, clustered band 3 protein and adhesive neoantigens.

Related Organizations
Keywords

Osmotic Fragility, Erythrocytes, Erythrocyte Membrane, Humans, Erythrocyte Aging, Malaria, Falciparum

  • BIP!
    Impact byBIP!
    selected citations
    These citations are derived from selected sources.
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    27
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Top 10%
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Top 10%
Powered by OpenAIRE graph
Found an issue? Give us feedback
selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
27
Average
Top 10%
Top 10%
Upload OA version
Are you the author of this publication? Upload your Open Access version to Zenodo!
It’s fast and easy, just two clicks!