Priming effects of lipopolysaccharide and inflammatory cytokines on canine granulocytes

Granulocytes play a pivotal role in natural immunity. Under inflammatory conditions, granulocytes are universally primed by several agents, such as endotoxins and inflammatory cytokines. Primed granulocytes exert potent adhesiveness, chemotaxis, phagocytosis and reactive oxygen species (ROS) product...

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Veröffentlicht in:Journal of Veterinary Medical Science 2010, Vol.72(1), pp.55-60
Hauptverfasser: Maeda, K., Kitasato Univ., Towada, Aomori (Japan). School of Veterinary Medicine, Sakonju, I, Kanda, A, Suzuki, T, Kakuta, T, Shimamura, S, Okano, S, Takase, K
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container_title Journal of Veterinary Medical Science
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creator Maeda, K., Kitasato Univ., Towada, Aomori (Japan). School of Veterinary Medicine
Sakonju, I
Kanda, A
Suzuki, T
Kakuta, T
Shimamura, S
Okano, S
Takase, K
description Granulocytes play a pivotal role in natural immunity. Under inflammatory conditions, granulocytes are universally primed by several agents, such as endotoxins and inflammatory cytokines. Primed granulocytes exert potent adhesiveness, chemotaxis, phagocytosis and reactive oxygen species (ROS) production, effectively eliminating invading agents. Reactivity against priming agents is known to vary with species; however, there have been few reports on the effects of priming agents on canine granulocytes. In the present study, we assayed the priming effects of lipopolysaccharide (LPS), recombinant canine tumor necrosis factor-alpha (rcTNF-alpha) and recombinant canine granulocyte macrophage colony-stimulating factor (rcGM-CSF) on canine granulocyte function in vitro. Isolated recombinant canine were primed with various concentrations of LPS, rcTNF-alpha and rcGM-CSF, and CD11b expression was assayed. Furthermore, actin polymerization, phagocytosis and ROS production were then assayed at primer concentrations where enhancement of CD11b expression was observed. LPS did not enhance canine granulocyte function. Phagocytosis and actin polymerization were not enhanced by priming agents; however, rcTNF-alpha and rcGM-CSF enhanced CD11b expression and ROS production in canine granulocytes. These results suggest that priming effects are mainly reflected in CD11b expression and ROS production, with rcGM-CSF and rcTNF-alpha having a priming effect similar to that observed in humans.
doi_str_mv 10.1292/jvms.08-0494
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In the present study, we assayed the priming effects of lipopolysaccharide (LPS), recombinant canine tumor necrosis factor-alpha (rcTNF-alpha) and recombinant canine granulocyte macrophage colony-stimulating factor (rcGM-CSF) on canine granulocyte function in vitro. Isolated recombinant canine were primed with various concentrations of LPS, rcTNF-alpha and rcGM-CSF, and CD11b expression was assayed. Furthermore, actin polymerization, phagocytosis and ROS production were then assayed at primer concentrations where enhancement of CD11b expression was observed. LPS did not enhance canine granulocyte function. Phagocytosis and actin polymerization were not enhanced by priming agents; however, rcTNF-alpha and rcGM-CSF enhanced CD11b expression and ROS production in canine granulocytes. 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School of Veterinary Medicine</creatorcontrib><creatorcontrib>Sakonju, I</creatorcontrib><creatorcontrib>Kanda, A</creatorcontrib><creatorcontrib>Suzuki, T</creatorcontrib><creatorcontrib>Kakuta, T</creatorcontrib><creatorcontrib>Shimamura, S</creatorcontrib><creatorcontrib>Okano, S</creatorcontrib><creatorcontrib>Takase, K</creatorcontrib><title>Priming effects of lipopolysaccharide and inflammatory cytokines on canine granulocytes</title><title>Journal of Veterinary Medical Science</title><addtitle>J. Vet. Med. Sci.</addtitle><description>Granulocytes play a pivotal role in natural immunity. Under inflammatory conditions, granulocytes are universally primed by several agents, such as endotoxins and inflammatory cytokines. Primed granulocytes exert potent adhesiveness, chemotaxis, phagocytosis and reactive oxygen species (ROS) production, effectively eliminating invading agents. Reactivity against priming agents is known to vary with species; however, there have been few reports on the effects of priming agents on canine granulocytes. In the present study, we assayed the priming effects of lipopolysaccharide (LPS), recombinant canine tumor necrosis factor-alpha (rcTNF-alpha) and recombinant canine granulocyte macrophage colony-stimulating factor (rcGM-CSF) on canine granulocyte function in vitro. Isolated recombinant canine were primed with various concentrations of LPS, rcTNF-alpha and rcGM-CSF, and CD11b expression was assayed. Furthermore, actin polymerization, phagocytosis and ROS production were then assayed at primer concentrations where enhancement of CD11b expression was observed. LPS did not enhance canine granulocyte function. Phagocytosis and actin polymerization were not enhanced by priming agents; however, rcTNF-alpha and rcGM-CSF enhanced CD11b expression and ROS production in canine granulocytes. 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School of Veterinary Medicine</creator><creator>Sakonju, I</creator><creator>Kanda, A</creator><creator>Suzuki, T</creator><creator>Kakuta, T</creator><creator>Shimamura, S</creator><creator>Okano, S</creator><creator>Takase, K</creator><general>JAPANESE SOCIETY OF VETERINARY SCIENCE</general><general>Japan Science and Technology Agency</general><scope>FBQ</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QR</scope><scope>7U9</scope><scope>8FD</scope><scope>FR3</scope><scope>H94</scope><scope>M7N</scope><scope>P64</scope><scope>7X8</scope></search><sort><creationdate>20100101</creationdate><title>Priming effects of lipopolysaccharide and inflammatory cytokines on canine granulocytes</title><author>Maeda, K., Kitasato Univ., Towada, Aomori (Japan). 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Reactivity against priming agents is known to vary with species; however, there have been few reports on the effects of priming agents on canine granulocytes. In the present study, we assayed the priming effects of lipopolysaccharide (LPS), recombinant canine tumor necrosis factor-alpha (rcTNF-alpha) and recombinant canine granulocyte macrophage colony-stimulating factor (rcGM-CSF) on canine granulocyte function in vitro. Isolated recombinant canine were primed with various concentrations of LPS, rcTNF-alpha and rcGM-CSF, and CD11b expression was assayed. Furthermore, actin polymerization, phagocytosis and ROS production were then assayed at primer concentrations where enhancement of CD11b expression was observed. LPS did not enhance canine granulocyte function. Phagocytosis and actin polymerization were not enhanced by priming agents; however, rcTNF-alpha and rcGM-CSF enhanced CD11b expression and ROS production in canine granulocytes. 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subjects Actins - metabolism
Animals
canine
CD11b Antigen - genetics
CD11b Antigen - metabolism
Cells, Cultured
CHIEN
CITOQUINAS
CYTOKINE
CYTOKINES
Cytokines - toxicity
DOGS
Gene Expression Regulation
GRANULOCITOS
GRANULOCYTE
Granulocyte-Macrophage Colony-Stimulating Factor - toxicity
GRANULOCYTES
Granulocytes - drug effects
http://www.fao.org/aos/agrovoc#c_11258
http://www.fao.org/aos/agrovoc#c_2352
http://www.fao.org/aos/agrovoc#c_24045
http://www.fao.org/aos/agrovoc#c_35078
http://www.fao.org/aos/agrovoc#c_3802
http://www.fao.org/aos/agrovoc#c_3856
IMMUNITE
IMMUNITY
INFLAMACION
INFLAMMATION
INMUNIDAD
LIPOPOLISACARIDOS
LIPOPOLYSACCHARIDE
LIPOPOLYSACCHARIDES
Lipopolysaccharides - toxicity
LPS
nflammatory cytokine
PERRO
Phagocytosis - drug effects
priming
Respiratory Burst
Tumor Necrosis Factor-alpha - toxicity
title Priming effects of lipopolysaccharide and inflammatory cytokines on canine granulocytes
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