alexa Effect of interleukin-8 and RANTES on the Gardos channel activity in sickle human red blood cells: role of the Duffy antigen receptor for chemokines.
Immunology

Immunology

International Journal of Inflammation, Cancer and Integrative Therapy

Author(s): Durps MC, Nebor D, du Mesnil PC, Mougenel D, Decastel M,

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Abstract We investigated the effects of the chemokines IL-8 and RANTES on the activity of the Gardos channel (GC) of sickle red blood cells (SSRBCs). SSRBCs expressing the Duffy antigen receptor for chemokines (DARC) incubated under oxygenated conditions exhibit GC activation. The deoxygenation-stimulated K(+) loss via the GC is activated by the chemokines in the Duffy-positive SSRBCs. The percentage of cells with high density is 17 times higher in the Duffy-positive group. These findings are consistent with a greater susceptibility of Duffy-positive SSRBCs to inflammatory chemokines leading to GC activation and cellular dehydration and suggest a coupling, promoted by the sickling process, between DARC and the GC. This article was published in Blood Cells Mol Dis and referenced in International Journal of Inflammation, Cancer and Integrative Therapy

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