The Wellcome Trust Lecture: Mechanisms of molecular trafficking in malaria
Identifieur interne : 003234 ( Main/Exploration ); précédent : 003233; suivant : 003235The Wellcome Trust Lecture: Mechanisms of molecular trafficking in malaria
Auteurs : I. W. ShermanSource :
- Parasitology [ 0031-1820 ] ; 1988-01.
Abstract
The asexual stages of Plasmodium living within the erythrocyte result in growth-related changes in the permeability properties of the red cell for substances such as glucose, amino acids, purine nucleosides, sodium, potassium, calcium, zinc, iron and several antimalarial drugs such as chloroquine, amodiaquine and mefloquine. In most cases such changes do not appear to be due to a modification in the affinity or specificity of red cell transporters; indeed, for most substances the membrane-associated transporters are either unaffected or are partially inactivated. In malaria-infected erythrocytes, where a striking increase in influx has been observed, it has been attributed to the insertion of parasite-encoded transporters into the red cell membrane or the formation of aqueous leaks and/or pores. Leak formation, in the vast majority of cases, does not appear to be dependent on the insertion of plasmodial proteins into the red cell membrane. However, since the data presently available are less than satisfactory for discriminating amongst the various possible transport mechanisms future studies will require painstaking efforts and carefully controlled conditions to discriminate amongst the various transport systems which are operational in the malaria-infected red cell and the parasite.
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DOI: 10.1017/S003118200008598X
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