Relationship between Plasma Fibrinolytic Activity and Serum Fibrinogen Degradation Products (FDP) Tested by Various Methods

1971 ◽  
Vol 26 (01) ◽  
pp. 083-087 ◽  
Author(s):  
B Lipiński ◽  
A Nowak ◽  
A Odrzywolska ◽  
J Dosiak
Keyword(s):  
Healthy Subjects ◽  
Fibrinolytic Activity ◽  
Degradation Products ◽  
Clot Lysis ◽  
Proteolytic Degradation ◽  
Fibrinogen Degradation Products ◽  
Lysis Time ◽  
Euglobulin Clot Lysis Time ◽  
Fibrinogen Content ◽  
Clot Lysis Time

SummaryIt was found in the present work that the level of serum fibrinogen degradation products (FDP) determined by the immunoassay method correlated well with the staphylococcal clumping titer in serum (correlation coefficient r = 0.68). The content of FDP in serum of 30 healthy subjects and patients with various diseases did not correlate, however, neither with blood fibrinolytic activity estimated by the euglobulin clot lysis time, nor with fibrinogen content and plasma anticlotting activity. It is concluded, that FDP appear in circulation as a result of local proteolytic degradation of intravascularly deposited fibrin without generalized activation of fibrinolysis.

FIBRINOLYTIC ACTION OF RESERPINE IN RATS

1964 ◽  
Vol 42 (1) ◽  
pp. 153-156 ◽  
Author(s):  
J. G. Ashwin ◽  
W. R. Coughlin
Keyword(s):  
Fibrinolytic Activity ◽  
Aminocaproic Acid ◽  
Route Of Administration ◽  
Clot Lysis ◽  
Lysis Time ◽  
Euglobulin Clot Lysis Time ◽  
Epsilon Aminocaproic Acid ◽  
Clot Lysis Time ◽  
Fibrinolytic Action

The plasma fibrinolytic activity in rats was measured by the euglobulin clot lysis time technique after injection of reserpine, serotonin, epsilon-aminocaproic acid, and UML-491. Fibrinolytic activity was increased by reserpine and serotonin, the extent depending on the dosage and route of administration. With serotonin, clot lysis time returned to normal after 6–12 hours. With reserpine, this occurred after 4 days. The antifibrinoiysin E-ACA was able to reduce fibrinolytic activity for more than 24 hours, whether given alone or with reserpine or serotonin. The antiserotonin UML-491 had a paradoxical fibrinolytic enhancing action that lasted for several hours alone, or given with serotonin it increased the fibrinolytic effect of serotonin.

The Effect of Fibrinogen Degradation Products on Plasmin Activity

1973 ◽  
Vol 29 (03) ◽  
pp. 592-597 ◽  
Author(s):  
M Myśliwiec ◽  
H Arnesen ◽  
H. C Godal
Keyword(s):  
Degradation Products ◽  
Clot Lysis ◽  
Plasmin Activity ◽  
Fibrinogen Degradation Products ◽  
Lysis Time ◽  
Clot Lysis Time

SummaryPurified fibrinogen degradation products Y, D or E were not found to exert antiplasmin activity as measured by the clot lysis time.Spontaneous inactivation of plasmin was observed during incubation at 37° C. This inactivation was partly prevented by the presence of fibrinogen degradation products, as well as by other proteins.

Influence of Moderate and Strenuous Daily Physical Activity on Fibrinolytic Activity of Blood: Possibility of Plasminogen Activator Stores Depletion

1979 ◽  
Vol 41 (04) ◽  
pp. 745-755 ◽  
Author(s):  
Dušan Keber ◽  
Mojca Stegnar ◽  
Irena Keber ◽  
Bojan Accetto
Keyword(s):  
Physical Activity ◽  
Plasminogen Activator ◽  
Fibrinolytic Activity ◽  
Regular Physical Activity ◽  
Clot Lysis ◽  
Moderate Activity ◽  
Lysis Time ◽  
Strenuous Activity ◽  
Activity Measurements ◽  
Clot Lysis Time

SummaryFibrinolysis was studied in 10 alpinists during regular physical activity of different intensity. Blood was sampled at rest and after exposure to submaximal workload on the treadmill on three occasions: before and after 6 months physical conditioning (moderate physical activity), and after 6 weeks of an alpinistic expedition (strenuous physical activity). Measurements included submaximal working capacity, fibrinogen, euglobulin clot lysis time (ELT), whole plasma clot lysis time, and estimations derived from ELT - percent increase in fibrinolytic activity after exercise (RFS), and absolute increase in fibrinolytic activity after exercise (PAR).Regular moderate activity increased the resting level of ELT, but strenuous activity decreased is. After each treadmill testing, a marked increase in fibrinolytic activity was observed. RFS was unaltered at all three testings. PAR increased after moderate activity, but decreased after strenuous activity.The results indicate that regular physical activity can lead from enhanced to decreased resting activity of plasminogen activator in blood. It is presumed that increased release of activator during prolonged stress causes partial depletion of endothelial stores with the consequence of decreased activator activity in the blood.

PHYSICAL ACTIVITY RELEASES TISSUE PLASMINOGEN ACTIVATOR FROM EXERCISING PARTS OF BODY

1987 ◽  
Author(s):  
I Keber ◽  
K Potisk ◽  
D Keber ◽  
M Stegnar ◽  
N Vene
Keyword(s):  
Physical Activity ◽  
Plasminogen Activator ◽  
Tissue Plasminogen Activator ◽  
Fibrinolytic Activity ◽  
Venous Occlusion ◽  
Clot Lysis ◽  
Lysis Time ◽  
Tissue Plasminogen ◽  
Euglobulin Clot Lysis Time ◽  
The Difference

To determine the origin of tissue plasminogen activator (t-PA) release during physical activity, we studied the separate and combined effects of venous occlusion and acute physical activity on t-PA release in arm and leg. In 15 healthy volunteers 20 min venous occlusions of arm and leg were performed simultaneously before physical activity ( maximal stress testing on treadmill)(occlusion I), immediately after physical activity and 45 min later (occlusion II). Blood samples were drawn from unoccluded arm before occlusion and after physical activity, and from occluded arm and leg after occlusion. Fibrinolytic activity was measured by euglobulin clot lysis time (ECLT) and t-PA activity assay. The amount of released t-PA during different stimuli (fibrinolytic potential) was calculated as the difference between post- and prestimulation fibrinolytic activity. Before physical activity there was a great increase in fibrinolytic activity due to t-PA in the occluded arm but no increase in the occluded leg. Physical activity itself caused a similar increase of systemic fibrinolytic activity as arm occlusion locally. After physical activity arm occlusion evoked equally good response than before it. Fibrinolytic activity during leg occlusion behaved differently: there was an increase in t-PA activity in the occluded leg which persisted one hour after physical activity, when systemic fibrinolytic activity already fell to initial level.These results demonstrated that walking and running triggered t-PA release from the leg vessels. Since leg occlusion was not a stimulus for t-PA release, it served only as a method to demonstrate the effect of physical activity.

The Anatomical Distribution of Plasma Fibrinolytic Activity in Man During Cardiac Catheterisation

1992 ◽  
Vol 68 (04) ◽  
pp. 442-447 ◽  
Author(s):  
S C L Gough ◽  
J Smyllie ◽  
T Sheldon ◽  
P J S Rice ◽  
P J Grant
Keyword(s):  
Fibrinolytic Activity ◽  
Vena Cava ◽  
Cardiac Catheterisation ◽  
Clot Lysis ◽  
Inhibitor Activity ◽  
Arterial Circulation ◽  
Venous Circulation ◽  
Lysis Time ◽  
Euglobulin Clot Lysis Time ◽  
Venous Sample

SummaryRegional circulating plasma levels of fibrinolytic activity were assessed in 15 patients undergoing cardiac catheterisation. The euglobulin clot lysis time (ECLT) was longer in the abdominal aorta (AA) than the inferior vena cava (IVC), (median difference – 17.5 min, p = 0.008). This was associated with higher inhibition of plasminogen activator activity (PAI) in the AA than IVC, – 1.75 IU/ml, p = 0.002. In the venous circulation the ECLT was higher in the peripheral venous sample than in the IVC, –25.5 min, p = 0.003, with higher PAI peripherally than in the IVC, -1.9 IU/ml, p = 0.001. There were no differences in ECLT, PAI, PAI-l:Ag or t-PA:Ag throughout the arterial circulation. These results demonstrate higher fibrinolytic activity with lower inhibitor activity in the venous compared to the arterial circulation. Within the venous circulation fibrinolytic activity is lower peripherally with increased inhibitor activity.

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