Role of the liver in regulating numbers of circulating neutrophils
J Shi, GE Gilbert, Y Kokubo… - Blood, The Journal of the …, 2001 - ashpublications.org
J Shi, GE Gilbert, Y Kokubo, T Ohashi
Blood, The Journal of the American Society of Hematology, 2001•ashpublications.orgNeutrophils (polymorphonuclear leukocytes [PMNs]) carry potent destructive enzymes that
can destroy invasive bacteria or damage normal tissue. PMNs have a half-life of only 6
hours in the blood, but the details of this homeostasis are unknown. In a rat model of
endotoxemia, P-selectin was selectively up-regulated in hepatic sinusoids and veins where
it was necessary for phagocytosis of PMNs by Kupffer cells in the liver, as opposed to the
spleen or the lungs. Apoptotic PMNs appeared in the lungs and spleen only after …
can destroy invasive bacteria or damage normal tissue. PMNs have a half-life of only 6
hours in the blood, but the details of this homeostasis are unknown. In a rat model of
endotoxemia, P-selectin was selectively up-regulated in hepatic sinusoids and veins where
it was necessary for phagocytosis of PMNs by Kupffer cells in the liver, as opposed to the
spleen or the lungs. Apoptotic PMNs appeared in the lungs and spleen only after …
Neutrophils (polymorphonuclear leukocytes [PMNs]) carry potent destructive enzymes that can destroy invasive bacteria or damage normal tissue. PMNs have a half-life of only 6 hours in the blood, but the details of this homeostasis are unknown. In a rat model of endotoxemia, P-selectin was selectively up-regulated in hepatic sinusoids and veins where it was necessary for phagocytosis of PMNs by Kupffer cells in the liver, as opposed to the spleen or the lungs. Apoptotic PMNs appeared in the lungs and spleen only after inactivation of Kupffer cells by gadolinium chloride (GdCl3). Blocking of Fas protein reduced the number of apoptotic cells in the liver; binding of annexin V to phosphatidylserine (PS) reduced the number of PMNs phagocytosed by Kupffer cells. The results support a clearance pathway in which apoptosis and phagocytosis are effected by Kupffer cells after P-selectin–mediated sequestration.
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