Abstract:
:The profiles of actions of lipoxin A4 (LXA4) and lipoxin B4 (LXB4), two lipoxygenase-derived eicosanoids, were examined with human neutrophils. At nanomolar concentrations, LXA4 and LXB4 each stimulated the release of [1-14C]arachidonic acid from esterified sources in neutrophils. Lipoxin-induced release of [1-14C]arachidonic acid was both dose- and time-dependent and was comparable to that induced by the chemotactic peptide f-met-leu-phe. Time-course studies revealed that lipoxin A4 and lipoxin B4 each induced a biphasic release of [1-14C]arachidonic acid, which was evident within seconds (5-15 sec) in its initial phase and minutes (greater than 30 sec) in the second phase. In contrast, the all-trans isomers of LXA4 and LXB4 did not provoke [1-14C]AA release. Lipoxin-induced release of arachidonic acid was inhibited by prior treatment of the cells with pertussis toxin but not by its beta-oligomers, suggesting the involvement of guaninine nucleotide-binding regulatory proteins in this event. Dual radiolabeling of neutrophil phospholipid classes with [1-14C]arachidonic acid and [3H]palmitic acid showed that phosphatidylcholine was a major source of lipoxin-induced release of [1-14C]arachidonic acid. They also demonstrated that lipoxins rapidly stimulate both formation of phosphatidic acid as well as phospholipid remodeling. Although both LXA4 and LXB4 (10(-8)-10(-6) M) stimulated the release of [1-14C]arachidonic acid, neither compound evoked its oxygenation by either the 5- or 15-lipoxygenase pathways (including the formation of LTB4, 20-COOH-LTB4, 5-HETE, or 15-HETE). LXA4 and LXB4 (10(-7) M) each stimulated the elevation of cytosolic Ca2+ as monitored with Fura 2-loaded cells, albeit to a lesser extent than equimolar concentrations of FMLP. Neither lipoxin altered the binding of [3H]LTB4 to its receptor on neutrophils. In addition, they did not stimulate aggregation or induce adhesion of neutrophils to human endothelial cells. Results indicate that both LXA4 and LXB4 stimulate the rapid remodeling of neutrophil phospholipids to release arachidonic acid without provoking either aggregation or the formation of lipoxygenase-derived products within a similar temporal and dose range. Together they indicate that LXA4 and LXB4 display selective actions with human neutrophils and suggest that these eicosanoids possess unique profiles of action which may regulate neutrophil function during inflammation.
journal_name
J Cell Physioljournal_title
Journal of cellular physiologyauthors
Nigam S,Fiore S,Luscinskas FW,Serhan CNdoi
10.1002/jcp.1041430316subject
Has Abstractpub_date
1990-06-01 00:00:00pages
512-23issue
3eissn
0021-9541issn
1097-4652journal_volume
143pub_type
杂志文章abstract::Characteristic features like self-renewal, multilineage differentiation potential, and immune-modulatory/anti-inflammatory properties, besides the ability to mobilize and home distant tissues make stem cells (SCs) a lifeline for an individual. Stem cells (SCs) if could be harvested and expanded without any abnormal ch...
journal_title:Journal of cellular physiology
pub_type: 杂志文章,评审
doi:10.1002/jcp.27846
更新日期:2019-06-01 00:00:00
abstract::Intimal hyperplasia is an important cause of stenosis or occlusion after vascular injury. Circular RNAs (circRNAs) are known to be related to various cardiovascular diseases. However, the expression profile of circRNAs in the neointima has not been reported in detail. In this study, we established a rat common carotid...
journal_title:Journal of cellular physiology
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abstract::Reactivation of dormant chick erythrocyte (CE) nuclei was studied by fusing chick red cells with rat myoblasts, HeLa cells, and chick fibroblasts. Heterokaryons representing different stages of nuclear reactivation were fixed and examined for nuclear antigens using polyclonal patient autoantisera reacting with mammali...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041200221
更新日期:1984-08-01 00:00:00
abstract::To evaluate the effects of fatty acids on endoplasmic reticulum (ER) stress, oxidative stress, and lipid damage. We treated BRL3A rat liver cells with, linoleic (LA), linolenic, oleic (OA), palmitic (PA), palmitoleic (POA), or stearic (SA) acid for 12 hr. The characteristics of cell lipid deposition, oxidative stress ...
journal_title:Journal of cellular physiology
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doi:10.1002/jcp.29553
更新日期:2020-09-01 00:00:00
abstract::We determined whether the multi-kinase inhibitor sorafenib or its derivative regorafenib interacted with phosphodiesterase 5 (PDE5) inhibitors such as Viagra (sildenafil) to kill tumor cells. PDE5 and PDGFRα/β were over-expressed in liver tumors compared to normal liver tissue. In multiple cell types in vitro sorafeni...
journal_title:Journal of cellular physiology
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abstract::The transmembrane potential (Vm) of vascular endothelial cells (EC) is an important property that may be involved in intra- and intercellular signal transduction for various vascular functions. In this study, Vm of intact aortic and vena caval EC from hamsters were measured using conventional microelectrodes. Vascular...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041560314
更新日期:1993-09-01 00:00:00
abstract::Progesterone is an endogenous immunomodulator and can suppress T-cell activation during pregnancy. We have previously shown that the non-genomic effects of progesterone, especially acidification, are exerted via plasma membrane sites and suppress cellular genomic responses to mitogens. This study aimed to show that ac...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.20962
更新日期:2007-05-01 00:00:00
abstract::Human dental pulp stem cells (hDPSCs) show significant potential for exploitation in novel regeneration strategies, although lack of understanding of their responses to bacterial challenge constrains their application. The present study aimed to investigate whether lipopolysaccharide (LPS), the major pathogenic factor...
journal_title:Journal of cellular physiology
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更新日期:2015-03-01 00:00:00
abstract::Using methods designed for isolation of mutants defective in receptor-mediated endocytosis, a novel L-cell mutant was obtained that exhibits resistance to three different protein toxins as well as alterations in secretion. This mutant, LEFIC, is resistant to modeccin, Pseudomonas exotoxin, and ricin. These toxins, whi...
journal_title:Journal of cellular physiology
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doi:10.1002/jcp.1041470205
更新日期:1991-05-01 00:00:00
abstract::With the long-range goals of elucidating the biochemical genetics and the phenotypic expression, both in vitro and in vivo, of mutator strains of mammalian cells, we have isolated and partially characterized a series of drug-resistant mutants from a subline a feeder-dependent parental mouse teratocarcinoma line (PSA-1...
journal_title:Journal of cellular physiology
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更新日期:1983-04-01 00:00:00
abstract::The percentage of T and B lymphocytes expressing a distinct cytoplasmic aggregate enriched in spectrin, ankyrin, and in several other proteins including protein kinase C greatly increases following various activation protocols. Members of the 70 kDa family of heat shock proteins (hsp70) temporarily bind to and stabili...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041650203
更新日期:1995-11-01 00:00:00
abstract::We have studied the transcriptional activity, steady-state mRNA levels, and steady-state protein levels of the c-myc and transferrin receptor (TfR) genes in murine M1 myeloid leukemia cells arrested in G1 phase of the cell cycle by different methods. When cells are growth-arrested by density inhibition, a technique th...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041350223
更新日期:1988-05-01 00:00:00
abstract::CRM197 is a naturally nontoxic diphtheria toxin mutant that binds and inhibits heparin-binding epidermal growth factor-like growth factor. CRM197 serves as carrier protein for vaccine and other therapeutic agents. CRM197 also inhibits the growth, migration, invasion, and induces apoptosis in various tumors. Vascular c...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.24798
更新日期:2015-08-01 00:00:00
abstract::Clinicians have observed that keloids preferentially form in body areas subject to increased skin tension. We hypothesized a difference exists in the transcriptional response of keloid fibroblasts to mechanical strain compared with normal fibroblasts. Normal and keloid fibroblasts were seeded in a device calibrated to...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.20486
更新日期:2006-02-01 00:00:00
abstract::The regulation of hexose transport under glucose-starvation conditions was studied in cultured human skin fibroblasts. Glucose starvation enhanced the transport of 2-DG and 3-0-methyl-D-glucose (3-OMG) but not of L-glucose. Glucose-starvation enhanced transport was inhibited by cytochalasin B (10 microM). The starvati...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
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更新日期:1982-09-01 00:00:00
abstract::Polycystin-1 regulates a number of cellular processes through the formation of complexes with the polycystin-2 ion channel or with other signal transduction proteins. Polycystin-1 is expressed in many tissues but other members of this gene family are distributed in a more restricted fashion. PKDREJ expression has been...
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更新日期:2006-11-01 00:00:00
abstract::This study examines the regulation of Swarm rat chondrosarcoma (SRC) cell proliferation in vitro. In serum-free cultures, SRC cells showed only transient DNA synthesis and this was increased by serum. Transforming growth factor-beta (TGF-beta) was identified as an essential serum component, since the mitogenic effect ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041490115
更新日期:1991-10-01 00:00:00
abstract::To study the role of noncollagenous proteins in bone formation, the synthesis and tissue distribution of BSP (bone sialoprotein), OPN (osteopontin) and SPARC (secreted protein acidic and rich in cysteine) were analyzed using pulse-chase and continuous labeling protocols during bone formation by cultures of rat calvari...
journal_title:Journal of cellular physiology
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更新日期:1992-09-01 00:00:00
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abstract::Previous studies from our laboratory have shown that Chinese hamster V79 cells mutated to high level resistance to amphotericin B have a lower cellular level of cholesterol, the target molecule for the polyene antibiotic. Two amphotericin B-resistant (AMBR) mutants were each hybridized to their parental amphotericin B...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
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journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041330320
更新日期:1987-12-01 00:00:00
abstract::Vascular endothelial cells (EC), communicating with one another across gap junctions, are usually made dysfunctional by hypoxia and reoxygenation (H/R); however, very limited information exists regarding the effects of H/R on the endothelial gap junctions. We investigated whether H/R interferes with endothelial gap ju...
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更新日期:1999-09-01 00:00:00
abstract::Bone tissues reportedly contain considerable amounts of activin A and follistatin, an activin A-binding protein. In the present study, we found that follistatin strongly inhibited osteoclast formation in cocultures of mouse bone marrow cells and primary osteoblasts induced by 1alpha,25 dihydroxyvitamin D(3), prostagla...
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更新日期:2001-08-01 00:00:00
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abstract::Differentiation of 3T3-L1 adipocytes, monitored by accumulation of neutral lipid and by increase in alpha-glycerophosphate dehydrogenase activity, is accelerated by incubation of confluent 3T3-L1 fibroblasts in media containing insulin, dexamethasone and isobutylmethylxantine (IBMX). IBMX inhibits cyclic nucleotide ph...
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abstract::The molecular mechanism by which thyroid hormones exert their effects on cell growth is still unknown. In this study, we used chick embryo hepatocytes at different stages of development as a model to investigate the effect of the two thyroid hormones, T3 and T4, and of their metabolite T2, on the control of cell proli...
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