Whole blood flow cytometric analysis of Ureaplasma-stimulated monocytes from pregnant women

2015 ◽  
Vol 109 ◽  
pp. 84-88 ◽  
Author(s):  
Yael D. Friedland ◽  
Tracey F. Lee-Pullen ◽  
Elizabeth Nathan ◽  
Rory Watts ◽  
Jeffrey A. Keelan ◽  
...  
PLoS ONE ◽  
2011 ◽  
Vol 6 (3) ◽  
pp. e17813 ◽  
Author(s):  
Urban Sester ◽  
Mathias Fousse ◽  
Jan Dirks ◽  
Ulrich Mack ◽  
Antje Prasse ◽  
...  

1998 ◽  
Vol 117 (1) ◽  
pp. 77-80 ◽  
Author(s):  
Tomoe Kuwasaki ◽  
Junichi Chihara ◽  
Hiroyuki Kayaba ◽  
Yumiko Kamata ◽  
Hazime Oyamada ◽  
...  

1999 ◽  
Vol 120 (1) ◽  
pp. 27-29 ◽  
Author(s):  
Norihiro Saito ◽  
Hiroyuki Kayaba ◽  
Kohei Honda ◽  
Yoshiyuki Yamada ◽  
Chang-Hao Cui ◽  
...  

1995 ◽  
Vol 74 (04) ◽  
pp. 1059-1063 ◽  
Author(s):  
Sarah L Janes ◽  
Phillipa M Kyle ◽  
Christopher Redman ◽  
Alison H Goodall

SummaryPre-eclampsia is a common complication of pregnancy, in which platelets may have an early pathogenetic role. In this prospective study a whole blood flow cytometric method has been used to detect circulating activated platelets in pregnant women prior to the development of pre-eclampsia. Activated platelets were identified by bound fibrinogen or by CD63 antigen expression. Of 121 healthy primiparous women studied at 28 weeks of pregnancy, 18 (15%) developed clinical pre-eclampsia six to thirteen weeks later. The platelets of these women showed increased fibrinogen binding ex vivo (5.1% platelets positive, compared with 3.4% in those who completed a normal pregnancy, p <0.02), and increased CD63 antigen expression (0.73% positive compared to 0.45%, p = 0.01). In contrast, no differences between the women with different outcomes were detected at 28 weeks in platelet counts, or plasma ß-thromboglobulin levels. These findings confirm that whole blood flow cytometry is a sensitive technique for investigating platelet activation in a clinical setting and support the hypothesis that platelets have a critical role in the pathogenesis of pre-eclampsia


1993 ◽  
Vol 70 (04) ◽  
pp. 659-666 ◽  
Author(s):  
Sarah L Janes ◽  
Darren J Wilson ◽  
Nicolas Chronos ◽  
Alison H Goodall

SummaryActivated platelets can be detected by measuring platelet-bound fibrinogen in a whole blood, flow cytometric assay, using a fluorescently-conjugated polyclonal antibody.Fibrinogen binding to unstimulated platelets from normal subjects was low in this assay, as was expression of the CD63 antigen. Single cell counting of samples prepared for flow cytometric analysis showed platelet aggregates do not form during the assay procedure. Immune complexes were not seen, and fibrinogen binding to the platelets was unaffected by the CD32 MAb, IV.3. Artefactual activation of the unfixed samples could be minimised by control of phlebotomy, time and temperature of incubation. Variations in platelet count in the range 140–430 × 109 1-1 and in plasma fibrinogen in the range 2–6 g 1-1 did not affect the assay results.Comparison of fibrinogen binding with expression of CD63 antigen on normal platelets, stimulated with agonists in vitro, demonstrated that fibrinogen binding detects an earlier stage of platelet activation.Platelet bound fibrinogen was shown to be sensitive in detecting small numbers of activated platelets in clinical samples in twelve patients on intensive care, four undergoing haemofiltration. The patients had a significantly higher median percentage of circulating platelets with bound fibrinogen (p <0.005), but fibrinogen binding was significantly lower (p <0.02) in response to 10-5 M ADP, compared to twelve age-matched normal Controls.


1996 ◽  
Vol 47 (1-2) ◽  
pp. 110
Author(s):  
G. Paterakis ◽  
A. Germenis ◽  
D. Skoumi ◽  
N. Koutsodimas ◽  
C. Stavropoulos-Giokas

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