Dual function of human IgA antibodies: inhibition of phagocytosis in circulating neutrophils and enhancement of responses in IL-8-stimulated cells.

abstract：:An important mediator of inflammation is prostaglandin E2 (PGE2 ), whose levels are determined by the activity of the enzyme cyclooxygenase (COX). Of the two isoforms of the enzyme, COX-2 has been shown to be induced in macrophages during inflammation. Although general COX inhibitors, belonging to the class of nonster...

journal_title：Journal of leukocyte biology

authors： Akter S,Sharma RK,Sharma S,Rastogi S,Fiebich BL,Akundi RS

更新日期：2021-01-13 00:00:00

abstract：:Human peritoneal macrophages (HPM) obtained via laparoscopy were examined for the presence and functional capacity of complement and Fc receptors. Between 5 and 20 ml of peritoneal fluid containing 1-2 X 10(6) macrophages/ml was available for each study. Macrophages made up 80-95% of the cells in the fluid. Fc and C3 ...

journal_title：Journal of leukocyte biology

authors： Newman SL,Becker S,Halme J

更新日期：1985-08-01 00:00:00

abstract：:The oxidative metabolic burst of stimulated human polymorphonuclear leukocytes (PMNs) has been evaluated by the measurement of oxygen consumption, chemiluminescence, and oxygen radicals (O2-, H2O2, OH-) derived from activation of the hexose monophosphate shunt (HMPS). PMNs from patients with chronic granulomatous dise...

journal_title：Journal of leukocyte biology

authors： Hassan NF,Campbell DE,Douglas SD

更新日期：1988-04-01 00:00:00

abstract：:CD4(+)/CD8(+) DP thymocytes are a well-described T cell developmental stage within the thymus. However, once differentiated, the CD4(+) lineage or the CD8(+) lineage is generally considered to be fixed. Nevertheless, mature CD4(+)/CD8(+) DP T cells have been described in the blood and peripheral lymphoid tissues of nu...

journal_title：Journal of leukocyte biology

authors： Overgaard NH,Jung JW,Steptoe RJ,Wells JW

更新日期：2015-01-01 00:00:00

abstract：:Radiation-induced chimeric mice were used to study the origin of pulmonary alveolar macrophages. Unlike in other studies, these radiation chimeras were prepared by using a special fractionated irradiation regimen to minimize the killing of alveolar macrophage colony-forming cells, putative local stem cells. For this s...

journal_title：Journal of leukocyte biology

authors： Tarling JD,Lin HS,Hsu S

更新日期：1987-11-01 00:00:00

abstract：:Dendritic cells (DCs) are specialized APCs present in all tissues, including tumors. They play a major role in orchestrating immune responses and were shown to occur in various functional states in tumors. In this respect, immunogenic tumor-associated DCs (TADCs) are required to initiate and sustain T cell-dependent a...

journal_title：Journal of leukocyte biology

authors： Keirsse J,Van Damme H,Van Ginderachter JA,Laoui D

更新日期：2017-08-01 00:00:00

abstract：:4-1BB is a member of the TNFR superfamily, which contributes to the activation of signaling pathways required for the survival of activated and memory T cells. We have shown previously that TRAF1, an adaptor protein recruited to 4-1BB, is required for 4-1BB-mediated CD8 T cell survival in vivo. With the use of a prote...

journal_title：Journal of leukocyte biology

authors： Sabbagh L,Andreeva D,Laramée GD,Oussa NA,Lew D,Bisson N,Soumounou Y,Pawson T,Watts TH

更新日期：2013-05-01 00:00:00

abstract：:We have previously reported that human neutrophils can be permeabilized with the cholesterol-complexing agent digitonin. These permeabilized cells can be induced to secrete lysosomal constituents when exposed to micromolar levels of free Ca2+, a process that is enhanced by certain guanine nucleotides. We examined the ...

journal_title：Journal of leukocyte biology

authors： Smolen JE,Stoehr SJ,Traynor AE,Sklar LA

更新日期：1987-01-01 00:00:00

abstract：:Macrophage activation by IFN-gamma results in a cascade of gene expression. To identify genes activated in mouse peritoneal macrophages by IFN-gamma, we created a cDNA subtraction library of IFN-gamma-induced genes. We have isolated from this subtraction library a novel cDNA clone, called Mg21, whose mRNA is absent in...

journal_title：Journal of leukocyte biology

authors： Lafuse WP,Brown D,Castle L,Zwilling BS

更新日期：1995-03-01 00:00:00

abstract：:Recent studies have revealed that aloe emodin (AE), a natural compound from the root and rhizome of Rheum palmatum L., exhibits significant pharmacologic activities. However, the pharmacologic relevance of the compound, particularly for cardiovascular disease, remains largely unknown. Here, we hypothesized that AE cou...

journal_title：Journal of leukocyte biology

authors： Zhang Y,Song Z,Huang S,Zhu L,Liu T,Shu H,Wang L,Huang Y,Chen Y

更新日期：2020-12-01 00:00:00

abstract：:Neutrophils kill invading pathogens by AMPs, including cathelicidins, ROS, and NETs. The human pathogen Staphylococcus aureus exhibits enhanced resistance to neutrophil AMPs, including the murine cathelicidin CRAMP, in part, as a result of alanylation of teichoic acids by the dlt operon. In this study, we took advanta...

journal_title：Journal of leukocyte biology

authors： Jann NJ,Schmaler M,Kristian SA,Radek KA,Gallo RL,Nizet V,Peschel A,Landmann R

更新日期：2009-11-01 00:00:00

abstract：:The agent(s) and mechanism(s) responsible for suppression of neutrophil chemotaxis in association with major thermal injury have not been identified. We have proposed that the reduced random motility characterizing patients' cells may contribute to their generalized chemotactic dysfunction. Here we report that actin p...

journal_title：Journal of leukocyte biology

authors： Hasslen SR,Ahrenholz DH,Solem LD,Nelson RD

更新日期：1992-11-01 00:00:00

abstract：:Alpha-defensins are antimicrobial peptides that contribute to innate-immune functions of neutrophils and intestinal Paneth cells. Transcription of alpha-defensin genes occurs early in neutrophilic myelopoeisis. To examine the mechanisms that regulate alpha-defensin gene expression, we analyzed transcription of rat neu...

journal_title：Journal of leukocyte biology

authors： Yamamoto CM,Banaiee N,Yount NY,Patel B,Selsted ME

更新日期：2004-02-01 00:00:00

abstract：:Dendritic cells (DC) obtained by culturing myeloid precursors in GM-CSF undergo maturation and induce an efficient T cell response when stimulated with microbial products. DC precursors themselves also recognize microbial products, and it remains unclear how these stimulated DC precursors modulate the immune response....

journal_title：Journal of leukocyte biology

authors： Kwan WH,Boix C,Gougelet N,Fridman WH,Mueller CG

更新日期：2007-07-01 00:00:00

abstract：:Human neutrophils isolated from the blood were incubated in vitro for 30 min with 25 ng/ml of phorbol 12-myristate 13-acetate (PMA), a protein kinase C activator, to study its effect on the fine structure of granulocytes and on the subcellular distribution of lactoferrin (Lf). Flow cytometry analysis of the human neut...

journal_title：Journal of leukocyte biology

authors： Esaguy N,Aguas AP,Vilanova M,Silva MT

更新日期：1991-11-01 00:00:00

abstract：:Myeloid-derived suppressor cells (MDSCs) increase in tuberculosis (TB) and may be targets for host-directed therapy (HDT). In this study, we use flow cytometry to analyze the effects of cyclooxygenase-2 inhibitors (COX-2i) on monocytic (M)-MDSCs in blood from TB patients attending a clinical trial of COX-2i. The effec...

journal_title：Journal of leukocyte biology

authors： Jøntvedt Jørgensen M,Jenum S,Tonby K,Mortensen R,Walzl G,Du Plessis N,Dyrhol-Riise AM

更新日期：2020-11-06 00:00:00

abstract：:Galectin-3 (gal-3), a beta-galactoside-binding animal lectin, plays a role in cell-cell and cell-extracellular matrix interactions. Extracellular gal-3 modulates cell migration and adhesion in several physiological and pathological processes. Gal-3 is highly expressed in activated macrophages. Schistosoma mansoni eggs...

journal_title：Journal of leukocyte biology

authors： Oliveira FL,Frazão P,Chammas R,Hsu DK,Liu FT,Borojevic R,Takiya CM,El-Cheikh MC

更新日期：2007-08-01 00:00:00

abstract：:There is currently no real treatment for blinding disorders that stem from the degeneration of cells in the retina and affect at least 50 million individuals worldwide. The excitement that accompanied the first studies showing the potential of retinal cell transplantation to alleviate the progress of blindness in such...

journal_title：Journal of leukocyte biology

authors： Lund RD,Ono SJ,Keegan DJ,Lawrence JM

更新日期：2003-08-01 00:00:00

abstract：:Leukocyte adhesion is a key factor in the pathogenesis of organ injury following a variety of stimuli. In this study we have addressed the role of leukocyte adhesion in hypertensives as a risk factor for organ injury. In the spontaneously hypertensive rat (SHR), the number of circulating leukocytes and their level of ...

journal_title：Journal of leukocyte biology

authors： Suzuki H,Zweifach BW,Forrest MJ,Schmid-Schönbein GW

更新日期：1995-01-01 00:00:00

abstract：:Neutrophil extracellular traps (NETs), web-like DNA structures, provide efficient means of eliminating invading microorganisms but can also present a potential threat to its host because it is a likely source of autoantigens or by promoting bystander tissue damage. Therefore, it is important to identify mechanisms tha...

journal_title：Journal of leukocyte biology

authors： Zabieglo K,Majewski P,Majchrzak-Gorecka M,Wlodarczyk A,Grygier B,Zegar A,Kapinska-Mrowiecka M,Naskalska A,Pyrc K,Dubin A,Wahl SM,Cichy J

更新日期：2015-07-01 00:00:00

abstract：:Several in vitro functions of neonatal neutrophils (N-PMN) have been reported to be deficient and may be functionally related to the increased susceptibility of the newborn to infection. To evaluate an in vitro event corresponding to one of the early steps in the sequence of inflammation, we used zymosan-activated pla...

journal_title：Journal of leukocyte biology

authors： Zwahlen RD,Slauson DO,Neilsen NR,Clifford CB

更新日期：1987-06-01 00:00:00

abstract：:Mucosa represents the main site of pathogen/cell interactions. The two main types of cells forming the epithelial structure [epithelial cells and Langerhans cells (LC)] coordinate the first defense responses to avoid infection. To evaluate the involvement of epithelial cells in the early steps leading to a specific ad...

journal_title：Journal of leukocyte biology

authors： Cremel M,Berlier W,Hamzeh H,Cognasse F,Lawrence P,Genin C,Bernengo JC,Lambert C,Dieu-Nosjean MC,Delézay O

更新日期：2005-07-01 00:00:00

abstract：:Inbred mouse strains have been known for many years to vary in their degree of susceptibility to different types of infectious diseases. The genetic basis of these interstrain differences is sometimes simple but often complex. In a few cases, positional cloning has been used successfully to identify single gene effect...

journal_title：Journal of leukocyte biology

authors： Fortier A,Min-Oo G,Forbes J,Lam-Yuk-Tseung S,Gros P

更新日期：2005-06-01 00:00:00

abstract：:Regulation of macrophage PCD plays an important role in pathogenesis of leishmaniasis. However, the precise involvement of any parasite molecule in this process remains uncertain. In the current study, in silico wide analysis demonstrated that genes in the Leishmania donovani genome are highly enriched for CpG motifs,...

journal_title：Journal of leukocyte biology

authors： Das S,Ghosh AK,Singh S,Saha B,Ganguly A,Das P

更新日期：2015-02-01 00:00:00

abstract：:CXC chemokines, which induce angiogenesis, have glutamine-leucine-arginine amino acid residues (ELR motif) in the amino terminus and bind CXCR2 and the Duffy antigen chemokine-binding protein. Duffy, a seven transmembrane protein that binds CXC and CC chemokines, has not been shown to couple to trimeric G proteins or ...

journal_title：Journal of leukocyte biology

authors： Du J,Luan J,Liu H,Daniel TO,Peiper S,Chen TS,Yu Y,Horton LW,Nanney LB,Strieter RM,Richmond A

更新日期：2002-01-01 00:00:00

abstract：:A point mutation in the mouse Ncf1(m1J) gene decreases production of ROS by the phagocytic NOX2 complex. Three mRNA splice variants are expressed, but only one is expressed as a protein, although at lower levels than the WT NCF1 (also known as p47phox). Our aim was to investigate whether the mutant p47phox, lacking 8 ...

journal_title：Journal of leukocyte biology

authors： Sareila O,Jaakkola N,Olofsson P,Kelkka T,Holmdahl R

更新日期：2013-03-01 00:00:00

abstract：:Monocytes and macrophages differentiate from progenitor cells under the influence of colony-stimulating factors. Genome-scale data have enabled the identification of the set of genes that distinguishes macrophages from other cell types and the ways in which thousands of genes are regulated in response to pathogen chal...

journal_title：Journal of leukocyte biology

authors： Hume DA

更新日期：2012-09-01 00:00:00

abstract：:ICAM-1 is a cell surface glycoprotein and an adhesion receptor that is best known for regulating leukocyte recruitment from circulation to sites of inflammation. However, in addition to vascular endothelial cells, ICAM-1 expression is also robustly induced on epithelial and immune cells in response to inflammatory sti...

journal_title：Journal of leukocyte biology

authors： Bui TM,Wiesolek HL,Sumagin R

更新日期：2020-09-01 00:00:00

abstract：:Interleukin-8 (IL-8), a neutrophil-activating cytokine, also activates certain T cell functions such as chemotaxis. We additionally find (n = 6) that recombinant (rIL-8; 1-100 ng/ml), when added to 24 h culture of human CD4+ T cells, suppressed the spontaneous production of IL-4 (50-85%). Steady state production of Il...

journal_title：Journal of leukocyte biology

authors： Gesser B,Lund M,Lohse N,Vestergaad C,Matsushima K,Sindet-Pedersen S,Jensen SL,Thestrup-Pedersen K,Larsen CG

更新日期：1996-03-01 00:00:00

abstract：:Primitive macrophages emerged in the sinusoidal lumen of the fetal mouse liver at 10 days of gestation before the initiation of hepatic hematopoiesis and matured into fetal macrophages. In the culture of cell suspensions from the fetal liver with LP3-conditioned medium, monocyte colonies were formed, but monocytopoies...

journal_title：Journal of leukocyte biology

authors： Naito M,Takahashi K,Nishikawa S

更新日期：1990-07-01 00:00:00