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  • Life and Medical Sciences  (3)
  • ADP-ribosylation  (1)
  • Ca^2^+ uptake  (1)
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  • 1
    Digitale Medien
    Digitale Medien
    Treatment of rabbit neutrophils with phorbol esters results in increased ADP-ribosylation catalyzed by pertussis toxin and inhibition of the GTPase stimulated by fMet-Leu-Phe
    Amsterdam : Elsevier
    FEBS Letters 198 (1986), S. 295-300 
    Details
    ISSN: 0014-5793
    Schlagwort(e): ADP-ribosylation ; Pertussis toxin ; Phorbol ester
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Biologie , Chemie und Pharmazie , Physik
    Materialart: Digitale Medien
    URL: http://linkinghub.elsevier.com/retrieve/pii/0014-5793(86)80424-0
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  • 2
    Digitale Medien
    Digitale Medien
    Phloretin is a potent inhibitor of rabbit neutrophil activation by chemotactic factors
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Biomembranes 728 (1983), S. 97-102 
    Details
    ISSN: 0005-2736
    Schlagwort(e): (Rabbit neutrophil) ; Aggregation ; Ca^2^+ uptake ; Chemotactic factor ; Degranulation ; Phloretin
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Biologie , Chemie und Pharmazie , Medizin , Physik
    Materialart: Digitale Medien
    URL: http://linkinghub.elsevier.com/retrieve/pii/0005-2736(83)90441-8
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  • 3
    Digitale Medien
    Digitale Medien
    Effect of arachidonic acid and the chemotactic factor F-Met-Leu-Phe on cation transport in rabbit neutrophils (1981)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 106 (1981), S. 215-223 
    Details
    ISSN: 0021-9541
    Schlagwort(e): Life and Medical Sciences ; Cell & Developmental Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Medizin
    Notizen: A detailed examination of the effects of exogenous arachidonate on cation metabolism in rabbit neutrophils was undertaken. Arachidonic acid stimulates the movement of 45Ca into and out of the neutrophils with a net result, in the presence of extracellular calcium, of increasing the steady-state level of 45Ca. Arachidonate also increases the uptake of 22Na. These effects of arachidonate are specific to these cations, concentration-dependent, and sensitive to lipoxygenase inhibitors. At the concentrations used in this study arachidonate does not influence the permeability of human erythrocytes to 45Ca. Furthermore, both arachidonic acid and F-Met-Leu-Phe release calcium from a previously unexchangeable intracellular pool and the effect of the two stimuli are not additive. Arachidonic acid-dependent, but not F-Met-Leu-Phe-dependent, calcium release is sensitive to lipoxygenase inhibitors. These two stimuli thus appear to release is sensitive to lipoxygenase inhibitors. These two stimuli thus appear to release calcium from the same pool(s) by separate mechanisms. The results summarized above are consistent with the hypothesis that one or more arachidonate metabolites are involved in the mechanism underlying the chemotactic factor induced permeability changes in rabbit neutrophils.
    Zusätzliches Material: 9 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jcp.1041060207
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  • 4
    Digitale Medien
    Digitale Medien
    Inhibition of chemotactic factor-induced neutrophil responsiveness by arachidonic acid (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 115 (1983), S. 243-248 
    Details
    ISSN: 0021-9541
    Schlagwort(e): Life and Medical Sciences ; Cell & Developmental Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Medizin
    Notizen: Arachidonic acid when added simultaneously with the chemotactic peptide formyl-methionyl-leucyl-phenylalanine (f-Met-Leu-Phe) inhibits the ability of the latter to initiate several but not all of its effects on rabbit peritoneal neutrophils. Stimulated neutrophil aggregation, calcium uptake, and increases in the steady state level of exchangeable calcium are all inhibited by 1-10 μM arachidonic acid. The binding of f-Met-Leu-Phe and the parameters of intracellular calcium redistribution (calcium efflux and changes in the steady state level of exchangeable calcium in the absence of extracellular calcium) and of stimulated sodium uptake are, on the other hand, unaffected by the same concentrations of arachidonic acid. Arachidic acid, the saturated analog of arachidonic acid, was found not to inhibit f-Met-Leu-Phe-stimulated aggregation and calcium uptake. Arachidonic acid, therefore, in addition to its well-described agonist properties, also possesses antagonist activities toward rabbit neutrophils. These results add a new level of complexity to the study of the role of arachidonic acid in cell activation.
    Zusätzliches Material: 7 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jcp.1041150305
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  • 5
    Digitale Medien
    Digitale Medien
    Effect of exogenous atp on sodium transport in mammalian red cells (1976)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 87 (1976), S. 297-305 
    Details
    ISSN: 0021-9541
    Schlagwort(e): Life and Medical Sciences ; Cell & Developmental Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Medizin
    Notizen: The effect of exogenous adenosine triphosphate (ATP) and other nucleotides on the transport of Na in various mammalian red cells has been studied. While they have no effect on the transport of Na in human and cat red cells, in dog red cells adenosine and its mono-, di-, and triphosphorylated forms were found to increase Na-influx. Of these, ATP has the most striking effect, causing a more than 8-fold increase at a concentration of 0.6 mM and exerting this effect at a dose range of 10-5 to 10-3 M. The effect of ATP is rapid (〉5 minutes) and can be reversed by washing or the addition of calcium or magnesium. In contrast to the adenosine series other phosphorylated nucleotides (GTP, CTP, UDP, GDP and cAMP) have no effect. The well known volume dependent Na-transport in these cells is reversed in the presence of 0.6 mM ATP. It is suggested that ATP acts on passive cation movements either by chelation of membrane charge of by a direct interaction with membrane proteins and may be involved in the volume regulation of cation transport in the dog erythrocyte.
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jcp.1040870305
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