Hemodialysis-activated granulocytes at the site of interstitial inflammation

American Journal of Kidney Diseases : the Official Journal of the National Kidney Foundation
S H JacobsonJ Lundahl

Abstract

It is not known to what extent intravascular phenotypic alterations in adhesion molecule expression induced by hemodialysis influence the recruitment of granulocytes and their ability to up-regulate CD11b at the local site of inflammation in the interstitium. We used a skin suction chamber technique to address this issue. Two skin blisters were raised on the forearm of eight hemodialysis patients and eight healthy subjects, and blister exudate was collected (time 0). The two blisters were stimulated with buffer (intermediate inflammation) or autologous serum (intense inflammation). Then the patients underwent cuprophane hemodialysis for 4 hours. Ten hours after start of dialysis, the exudate was aspirated from each chamber. Granulocyte count and surface expression of CD11b and CD62L were analyzed in samples from peripheral blood and blister exudate by flow cytometry. Granulocytes from healthy blood donors were incubated in blister fluid from patients and healthy subjects to determine the local chemotactic activity in terms of CD11b up-regulation. The expression of CD11b increased fourfold and CD62L decreased simultaneously in patients and healthy subjects when cells transmigrated to the unstimulated blister at time 0. At the si...Continue Reading

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Adhesion Molecules in Health and Disease

Cell adhesion molecules are a subset of cell adhesion proteins located on the cell surface involved in binding with other cells or with the extracellular matrix in the process called cell adhesion. In essence, cell adhesion molecules help cells stick to each other and to their surroundings. Cell adhesion is a crucial component in maintaining tissue structure and function. Discover the latest research on adhesion molecule and their role in health and disease here.

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