Human neutrophil elastase abolishes interleukin-8 chemotactic activity.

abstract：:Alveolar macrophages from chronic obstructive pulmonary disease patients and cigarette smokers are deficient in their ability to phagocytose apoptotic bronchial epithelial cells (efferocytosis). We hypothesized that the defect is mediated via inhibition of sphingosine kinases and/or their subcellular mislocalization i...

journal_title：Journal of leukocyte biology

authors： Tran HB,Barnawi J,Ween M,Hamon R,Roscioli E,Hodge G,Reynolds PN,Pitson SM,Davies LT,Haberberger R,Hodge S

更新日期：2016-07-01 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：:Deoxycytidyl-deoxyguanosine [(CpG)3] oligodeoxynucleotides (ODNs) signal through TLR9 to induce type-I IFN (IFN-alphabeta) and IFN-alphabeta-dependent MHC-I cross-presentation of exogenous antigens by dendritic cells (DCs). A puzzle was presented by our observation that three ODN classes, CpG-A, CpG-B, and CpG-C, had ...

journal_title：Journal of leukocyte biology

authors： Gray RC,Kuchtey J,Harding CV

更新日期：2007-04-01 00:00:00

abstract：:During the development of immune responses to pathogens, self-antigens, or environmental allergens, naive CD4(+) T cells differentiate into subsets of effector cells including Th1, Th2, and Th17 cells. The differentiation into these subsets is controlled by specific transcription factors. The activity of these effecto...

journal_title：Journal of leukocyte biology

authors： Chapoval S,Dasgupta P,Dorsey NJ,Keegan AD

更新日期：2010-06-01 00:00:00

abstract：:DC maturation and functions are influenced by microbial and environmental stimuli, which could contribute to immune dysfunction. Here, we have investigated the role of enterobacteria (Escherichia coli CBL2 and Shigella CBD8) isolated from CD patients, bifidobacteria (Bifidobacterium longum CECT 7347 and Bifidobacteriu...

journal_title：Journal of leukocyte biology

authors： De Palma G,Kamanova J,Cinova J,Olivares M,Drasarova H,Tuckova L,Sanz Y

更新日期：2012-11-01 00:00:00

abstract：:Initial studies designed to measure the effect of inhibiting RNA synthesis by dactinomycin on macrophage functions revealed that the cells were uniformly killed at concentrations that have been routinely used to inhibit RNA synthesis in other cell types. We, thus, determined the dose curve for the cytotoxicity of dact...

journal_title：Journal of leukocyte biology

authors： Lewis JG,Adams DO,Fan S

更新日期：1995-04-01 00:00:00

abstract：:Human neutrophils generate oxygen reduction products as a consequence of membrane interactions with a number of stimuli. One oxygen-centered free radical (superoxide) has been unequivocally shown to result from this "respiratory burst," and some experimental evidence for another (hydroxyl radical) has been published, ...

journal_title：Journal of leukocyte biology

authors： Britigan BE,Cohen MS,Rosen GM

更新日期：1987-04-01 00:00:00

abstract：:In the present study, we investigated the expression of human CD1d antigen on activated mature T cells. Expression of this glycoprotein was found to be highly regulated and dependent on PHA stimulation. Flow cytometry studies using the NOR3.2 antibody, which recognized CD1d under denaturing conditions, showed a clear ...

journal_title：Journal of leukocyte biology

authors： Salamone MC,Rabinovich GA,Mendiguren AK,Salamone GV,Fainboim L

更新日期：2001-02-01 00:00:00

abstract：:That monocytes can differentiate into macrophages or dendritic cells (DCs) makes them an essential link between innate and adaptive immunity. However, little is known about how interactions with pathogens or T cells influence monocyte engagement toward DCs. We approached this point in cultures where granulocyte macrop...

journal_title：Journal of leukocyte biology

authors： Rosenzwajg M,Jourquin F,Tailleux L,Gluckman JC

更新日期：2002-12-01 00:00:00

abstract：:HIV is known to subvert cellular machinery to enhance its replication. Recently, HIV has been reported to enhance TC renin expression. We hypothesized that HIV induces and maintains high renin expression to promote its own replication in TCs. Renin enhanced HIV replication in TCs in a dose-dependent manner. (P)RR-defi...

journal_title：Journal of leukocyte biology

authors： Chandel N,Ayasolla K,Lan X,Rai P,Mikulak J,Husain M,Malhotra A,McGowan J,Singhal PC

更新日期：2014-10-01 00:00:00

abstract：:It has been shown recently that MCs are required for differential regulation of the immune response by granulocytic versus monocytic MDSCs. Granulocytic MDSCs promoted parasite clearance, whereas monocytic MDSCs enhanced tumor progression; both activities were abrogated in MC-deficient mice. Herein, we demonstrate tha...

journal_title：Journal of leukocyte biology

authors： Martin RK,Saleem SJ,Folgosa L,Zellner HB,Damle SR,Nguyen GK,Ryan JJ,Bear HD,Irani AM,Conrad DH

更新日期：2014-07-01 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：:In a DNA immunization against Herpes simplex virus (HSV), we examined the ability of plasmid-encoded interleukin-15 (pIL-15) to induce and maintain the mucosal B and T cell immune response. pIL-15 generated memory CD8(+) T cell responses that were threefold higher and mainly maintained in the spleen, but high levels o...

journal_title：Journal of leukocyte biology

authors： Toka FN,Rouse BT

更新日期：2005-07-01 00:00:00

abstract：:Stimulation of the respiratory burst in phagocytes induces the formation of mixed disulfides between sulfhydryl groups of proteins and low-molecular-weight thiols. We hypothesized that this process (S-thiolation) might be involved in turning off the respiratory burst. However, induction of S-thiolation by pretreatment...

journal_title：Journal of leukocyte biology

authors： Moriguchi T,Seres T,Ravichandran V,Sasada M,Johnston RB Jr

更新日期：1996-08-01 00:00:00

abstract：:To determine whether monocytes can be generated from CD34+ hematopoietic progenitors in large numbers, cord blood CD34+ cells were first expanded for 3-10 days in X-VIVO 10 medium supplemented with FCS, stem cell factor (SCF), thrombopoietin (TPO), and Flt-3 Ligand (Flt-3L), and then differentiated in IMDM medium supp...

journal_title：Journal of leukocyte biology

authors： Stec M,Weglarczyk K,Baran J,Zuba E,Mytar B,Pryjma J,Zembala M

更新日期：2007-09-01 00:00:00

abstract：:IL-32 is a proinflammatory cytokine associated with infections, autoimmune diseases, and allergic asthma. In the present study, we elucidated the synergistic effect of IL-32γ and NOD ligand on the activation of human eosinophils, principal effector cells for allergic inflammation, and the underlying mechanisms. Specif...

journal_title：Journal of leukocyte biology

authors： Wong CK,Dong J,Lam CW

更新日期：2014-04-01 00:00:00

abstract：:Macrophages activated for tumor cell killing by bacterial lipopolysaccharide (LPS) were shown to lose their cytolytic activity if exposed to physiological levels of prostaglandin E2 (PGE2). Increasing the LPS stimulus more than 100-fold over the amount needed to activate the cells did not substantially increase their ...

journal_title：Journal of leukocyte biology

authors： Russell SW,Pace JL

更新日期：1984-03-01 00:00:00

abstract：:CXCR4 is a key co-receptor required for the infection of T-tropic HIV-1 strain of CD4+ T lymphocytes. The regulation of this chemokine receptor was therefore studied. Th2 polarized cells expressed more CXCR4 than Th1 cells. Among a panel of cytokines and stimulants, a Th2 type cytokine interleukin-4 (IL-4) selectively...

journal_title：Journal of leukocyte biology

authors： Wang J,Harada A,Matsushita S,Matsumi S,Zhang Y,Shioda T,Nagai Y,Matsushima K

更新日期：1998-11-01 00:00:00

abstract：:Bone destruction in inflammatory osteolytic diseases including periodontitis is related to excessive activity of osteoclasts (OC), which originate from precursor cells of the myeloid lineage, termed osteoclast precursors (OCP). In contrast to ample knowledge that we currently have on mature OC, little is known about O...

journal_title：Journal of leukocyte biology

authors： Zhao Y,Li Z,Su L,Ballesteros-Tato A,Katz J,Michalek SM,Feng X,Zhang P

更新日期：2020-10-01 00:00:00

abstract：:The activation of collagenase released by polymorphonuclear leukocytes (PMNs) has been extensively studied in vitro, but the activation of the enzyme in vivo is not fully understood. For further evaluation of the relative role of oxidative and proteolytic mechanisms in the activation of collagenase, PMNs were stimulat...

journal_title：Journal of leukocyte biology

authors： Claesson R,Karlsson M,Zhang Y,Carlsson J

更新日期：1996-11-01 00:00:00

abstract：:TLRs act as sentinels in professional immune cells to detect and initiate the innate immune response to pathogen challenge. TLR4 is a widely expressed TLR, responsible for initiating potent immune responses to LPS. TRAM acts to bridge TLR4 with TRIF, orchestrating the inflammatory response to pathogen challenge. We ha...

journal_title：Journal of leukocyte biology

authors： Verstak B,Stack J,Ve T,Mangan M,Hjerrild K,Jeon J,Stahl R,Latz E,Gay N,Kobe B,Bowie AG,Mansell A

更新日期：2014-09-01 00:00:00

abstract：:Breaking the long-held paradigm that primary B cells are not phagocytic, several studies have demonstrated recently that B cells from fish, amphibians, and reptilians have a significant phagocytic capacity. Whether such capacity has remained conserved in certain mammalian B cell subsets is presently an enigma. Here, w...

journal_title：Journal of leukocyte biology

authors： Parra D,Rieger AM,Li J,Zhang YA,Randall LM,Hunter CA,Barreda DR,Sunyer JO

更新日期：2012-04-01 00:00:00

abstract：:IL-31, a newly identified member of the IL-6 cytokine family, is involved in many pathological conditions, including atopic dermatitis and pruritis. In this study, we investigated how expression of IL-31 is regulated in T cells and mast cells. We observed that expression of IL-31 required a calcium signal and was depe...

journal_title：Journal of leukocyte biology

authors： Park K,Park JH,Yang WJ,Lee JJ,Song MJ,Kim HP

更新日期：2012-02-01 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：:Chemotactic factors and phorbol esters may act synergistically to evoke neutrophil responses, but the mechanism of such interaction is not entirely clear. We investigated the combined effects of the chemotactic peptide n-formyl-methionyl-leucyl-phenylalanine (FMLP) and phorbol myristate acetate (PMA) on protein kinase...

journal_title：Journal of leukocyte biology

authors： Gay JC,Stitt ES

更新日期：1990-01-01 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：:Flagellin, as a TLR5 agonist, is an established mucosal adjuvant for enhancing mucosal IgA responses by i.n. immunization. Nasal epithelial cells (NECs) are the first sentinel cells to be exposed to antigen and adjuvant in i.n. immunization, and it is suggested that they play an important role in the mucosal adjuvant ...

journal_title：Journal of leukocyte biology

authors： Cao Y,Zhang E,Yang J,Yang Y,Yu J,Xiao Y,Li W,Zhou D,Li Y,Zhao B,Yan H,Lu M,Zhong M,Yan H

更新日期：2017-09-01 00:00:00

abstract：:The last 18 months have witnessed the characterization of several new members of the tumor necrosis factor (TNF) receptor family. Among these are five receptors for the cytotoxic ligand TRAIL (TNF-related apoptosis-inducing ligand). Two of these receptors, TRAIL-R1 and TRAIL-R2, contain classical cytoplasmic death dom...

journal_title：Journal of leukocyte biology

authors： Degli-Esposti M

更新日期：1999-05-01 00:00:00

abstract：:In this study, we test the hypothesis that cAMP, acting as an extracellular mediator, affects the physiology and function of human myeloid cells. The cAMP is a second messenger recognized as a universal regulator of several cellular functions in different organisms. Many studies have shown that extracellular cAMP exer...

journal_title：Journal of leukocyte biology

authors： Sciaraffia E,Riccomi A,Lindstedt R,Gesa V,Cirelli E,Patrizio M,De Magistris MT,Vendetti S

更新日期：2014-07-01 00:00:00

abstract：:MRL/fas(lpr) mice, which undergo a systemic autoimmune disease with similarities to systemic lupus erythematosus (SLE), display reduced pathology and prolonged survival if rendered deficient in ICAM-1. However, it remains unclear whether this is a result of the ability of ICAM-1 to promote the immune response or media...

journal_title：Journal of leukocyte biology

authors： Norman MU,James WG,Hickey MJ

更新日期：2008-07-01 00:00:00