Reactive oxygen species generation by bovine blood neutrophils with different CXCR1 (IL8RA) genotype following Interleukin-8 incubation. 2015

Joren Verbeke, and Xanthippe Boulougouris, and Carolien Rogiers, and Christian Burvenich, and Luc Peelman, and Bart De Spiegeleer, and Sarne De Vliegher
M-team and Mastitis and Milk Quality Research Unit, Department of Reproduction, Obstetrics, and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan, 133, Merelbeke, Belgium. Joren.Verbeke@UGent.be.

BACKGROUND Associations between polymorphisms in the bovine CXCR1 gene, encoding the chemokine (C-X-C motif) receptor 1 (IL8RA), and neutrophil traits and mastitis have been described. In the present study, blood neutrophils were isolated from 20 early lactating heifers with different CXCR1 genotype at position 735 or 980. The cells were incubated with different concentrations of recombinant bovine IL-8 (rbIL-8) for 2 or 6 h and stimulated with phorbol 12-myristate 13-acetate (PMA) or opsonized zymosan particles (OZP). Potential association between CXCR1 genotype and production of reactive oxygen species (ROS) was studied. RESULTS Although on single nucleotide polymorphisms (SNPs) may potentially affect CXCR1 function, SNPs c.735C > G and c.980A > G showed no association with ROS production with or without incubation of rbIL-8. Neutrophils incubated with rbIL-8 for 2 or 6 h showed higher PMA- and lower OZP-induced ROS production compared to control without rbIL-8. CONCLUSIONS In the present study no association could be detected between superoxide production by isolated bovine neutrophils during early lactation and CXCR1 gene polymorphism. IL-8 showed to possess inhibitory effects on ROS generation in bovine neutrophils.

UI MeSH Term Description Entries
D009504 Neutrophils Granular leukocytes having a nucleus with three to five lobes connected by slender threads of chromatin, and cytoplasm containing fine inconspicuous granules and stainable by neutral dyes. LE Cells,Leukocytes, Polymorphonuclear,Polymorphonuclear Leukocytes,Polymorphonuclear Neutrophils,Neutrophil Band Cells,Band Cell, Neutrophil,Cell, LE,LE Cell,Leukocyte, Polymorphonuclear,Neutrophil,Neutrophil Band Cell,Neutrophil, Polymorphonuclear,Polymorphonuclear Leukocyte,Polymorphonuclear Neutrophil
D002417 Cattle Domesticated bovine animals of the genus Bos, usually kept on a farm or ranch and used for the production of meat or dairy products or for heavy labor. Beef Cow,Bos grunniens,Bos indicus,Bos indicus Cattle,Bos taurus,Cow,Cow, Domestic,Dairy Cow,Holstein Cow,Indicine Cattle,Taurine Cattle,Taurus Cattle,Yak,Zebu,Beef Cows,Bos indicus Cattles,Cattle, Bos indicus,Cattle, Indicine,Cattle, Taurine,Cattle, Taurus,Cattles, Bos indicus,Cattles, Indicine,Cattles, Taurine,Cattles, Taurus,Cow, Beef,Cow, Dairy,Cow, Holstein,Cows,Dairy Cows,Domestic Cow,Domestic Cows,Indicine Cattles,Taurine Cattles,Taurus Cattles,Yaks,Zebus
D002478 Cells, Cultured Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others. Cultured Cells,Cell, Cultured,Cultured Cell
D005260 Female Females
D005838 Genotype The genetic constitution of the individual, comprising the ALLELES present at each GENETIC LOCUS. Genogroup,Genogroups,Genotypes
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D016209 Interleukin-8 A member of the CXC chemokine family that plays a role in the regulation of the acute inflammatory response. It is secreted by variety of cell types and induces CHEMOTAXIS of NEUTROPHILS and other inflammatory cells. CXCL8 Chemokine,Chemokine CXCL8,Chemotactic Factor, Macrophage-Derived,Chemotactic Factor, Neutrophil, Monocyte-Derived,IL-8,Neutrophil-Activating Peptide, Lymphocyte-Derived,Neutrophil-Activating Peptide, Monocyte-Derived,AMCF-I,Alveolar Macrophage Chemotactic Factor-I,Anionic Neutrophil-Activating Peptide,Chemokines, CXCL8,Chemotactic Factor, Neutrophil,Granulocyte Chemotactic Peptide-Interleukin-8,IL8,Monocyte-Derived Neutrophil Chemotactic Factor,Neutrophil Activation Factor,Alveolar Macrophage Chemotactic Factor I,Anionic Neutrophil Activating Peptide,CXCL8 Chemokines,CXCL8, Chemokine,Chemokine, CXCL8,Chemotactic Factor, Macrophage Derived,Chemotactic Peptide-Interleukin-8, Granulocyte,Granulocyte Chemotactic Peptide Interleukin 8,Interleukin 8,Lymphocyte-Derived Neutrophil-Activating Peptide,Macrophage-Derived Chemotactic Factor,Monocyte-Derived Neutrophil-Activating Peptide,Neutrophil Activating Peptide, Lymphocyte Derived,Neutrophil Activating Peptide, Monocyte Derived,Neutrophil Chemotactic Factor,Neutrophil-Activating Peptide, Anionic,Peptide, Anionic Neutrophil-Activating
D017382 Reactive Oxygen Species Molecules or ions formed by the incomplete one-electron reduction of oxygen. These reactive oxygen intermediates include SINGLET OXYGEN; SUPEROXIDES; PEROXIDES; HYDROXYL RADICAL; and HYPOCHLOROUS ACID. They contribute to the microbicidal activity of PHAGOCYTES, regulation of SIGNAL TRANSDUCTION and GENE EXPRESSION, and the oxidative damage to NUCLEIC ACIDS; PROTEINS; and LIPIDS. Active Oxygen Species,Oxygen Radical,Oxygen Radicals,Pro-Oxidant,Reactive Oxygen Intermediates,Active Oxygen,Oxygen Species, Reactive,Pro-Oxidants,Oxygen, Active,Pro Oxidant,Pro Oxidants,Radical, Oxygen
D023062 Receptors, Interleukin-8A High-affinity G-protein-coupled receptors for INTERLEUKIN-8 present on NEUTROPHILS; MONOCYTES; and BASOPHILS. Antigens, CDw128a,CDw128a Antigens,CXC Chemokine Receptor 1,CXCR1 Receptors,IL-8A Receptors,Interleukin-8A Receptors,Receptors, CXCR1,CXCR1 Receptor,High Affinity Interleukin-8 Receptor A,IL-8A Receptor,Interleukin 8 Receptor Type A,Interleukin 8A Receptor,MDNCF Receptors,NAP-1 Receptor,High Affinity Interleukin 8 Receptor A,IL 8A Receptor,IL 8A Receptors,Interleukin 8A Receptors,NAP 1 Receptor,Receptor, CXCR1,Receptor, IL-8A,Receptor, Interleukin 8A,Receptor, NAP-1,Receptors, IL-8A,Receptors, Interleukin 8A,Receptors, MDNCF

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