J. Croxtall

Publications41
h-index21
Citations3,626
Highly Influential Citations105
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Inducible isoforms of cyclooxygenase and nitric-oxide synthase in inflammation.
Cyclooxygenase (COX) converts arachidonic acid to prostaglandin H2, which is further metabolized to prostanoids. Two isoforms of COX exist: a constitutive (COX-1) and an inducible (COX-2) enzyme.… Expand
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Aberrant inflammation and resistance to glucocorticoids in Annexin 1−/− Mouse
The 37‐kDa protein annexin 1 (Anx‐1; lipocortin 1) has been implicated in the regulation of phagocytosis, cell signaling, and proliferation and is postulated to be a mediator of glucocorticoid action… Expand
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Induction of cyclo‐oxygenase‐2 by cytokines in human pulmonary epithelial cells: regulation by dexamethasone
1 Cyclo‐oxygenase metabolizes arachidonic acid to prostaglandin H2 (PGH2) and exists in at least two isoforms. Cyclo‐oxygenase‐1 (COX‐1) is expressed constitutively whereas COX‐2 is induced by… Expand
  • 320
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Glucocorticoids act within minutes to inhibit recruitment of signalling factors to activated EGF receptors through a receptor‐dependent, transcription‐independent mechanism
Recruitment to activated tyrosine kinase growth factor receptors of Grb2 and p21ras leads to downstream activation of the kinases Raf, MAPK/Erk kinase (Mek) and, subsequently, extracellular… Expand
  • 294
  • 11
A novel role for phospholipase A2 isoforms in the checkpoint control of acute inflammation
Acute inflammation can be considered in terms of a series of checkpoints where each phase of cellular influx, persistence, and clearance is controlled by endogenous stop and go signals. It is… Expand
  • 170
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Lipocortin 1 mediates dexamethasone-induced growth arrest of the A549 lung adenocarcinoma cell line.
  • J. Croxtall, R. Flower
  • Biology, Medicine
  • Proceedings of the National Academy of Sciences…
  • 15 April 1992
The synthetic glucocorticoid dexamethasone (1 microM to 1 pM) strongly (maximum greater than 80%) inhibits proliferation of the A549 human lung adenocarcinoma line (EC50 greater than 1 nM) and leads… Expand
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Different glucocorticoids vary in their genomic and non‐genomic mechanism of action in A549 cells
We have examined the effects of 12 glucocorticoids as inhibitors of A549 cell growth. Other than cortisone and prednisone, all the glucocorticoids inhibited cell growth and this was strongly… Expand
  • 130
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Mobilizing lipocortin 1 in adherent human leukocytes downregulates their transmigration
Polymorphonuclear leukocyte (PMN) migration into sites of inflammation is fundamental to the host defense response. Activation of endothelial cells and PMNs increases the expression or activation of… Expand
  • 229
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Lipocortin 1 and the control of cPLA2 activity in A549 cells. Glucocorticoids block EGF stimulation of cPLA2 phosphorylation.
Epidermal growth factor (EGF) rapidly stimulates the release of arachidonic acid in A549 cells by a mechanism that is sensitive to pertussis toxin [1]. We show that EGF treatment of A549 cells… Expand
  • 66
  • 3
Lipocortin 1 mediates the inhibition by dexamethasone of the induction by endotoxin of nitric oxide synthase in the rat.
  • C. Wu, J. Croxtall, +4 authors J. Vane
  • Chemistry, Medicine
  • Proceedings of the National Academy of Sciences…
  • 11 April 1995
Administration of Escherichia coli lipopolysaccharide (LPS; 10 mg/kg i.v.) to male Wistar rats caused within 240 min (i) a sustained fall (approximately 30 mmHg) in mean arterial blood pressure, (ii)… Expand
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