Related Experiment Videos
Thrombolysis with tissue plasminogen activator (tPA) is temperature dependent
M A Yenari1, J T Palmer, P M Bracci
1Dept. of Neurology, Stanford University Medical Center, CA 94305, USA.
Thrombosis Research
|March 1, 1995
Summary
Investigating tissue plasminogen activator (tPA) and hypothermia for stroke treatment revealed a gap in understanding tPA
Area of Science:
- Neuroscience
- Biochemistry
Background:
- Acute ischemic stroke treatment involves thrombolysis with tissue plasminogen activator (tPA) and hypothermia.
- Combined therapy is of interest, but hypothermia can affect coagulation.
- Hypothermia-induced coagulopathy involves platelet dysfunction, clotting factor inhibition, and altered fibrinolysis.
Purpose of the Study:
- To investigate the fibrinolytic activity of tissue plasminogen activator (tPA) at clinically relevant temperatures (25-37°C).
- To address the lack of data on tPA's efficacy within this specific temperature range.
Main Methods:
- Review of existing literature on hypothermia and coagulation.
- Analysis of studies on fibrinolysis and temperature, including streptokinase and tPA at extreme temperatures.
- Identification of the research gap concerning tPA activity between 25-37°C.
Main Results:
- Previous studies show hypothermia affects coagulation, platelet function, and fibrinolysis.
- Some studies indicate altered fibrinolytic activity with temperature changes for certain agents.
- No data exists on tissue plasminogen activator (tPA) fibrinolytic activity between 25-37°C.
Conclusions:
- Further research is needed to understand tissue plasminogen activator (tPA) activity within the clinically relevant hypothermia range (25-37°C).
- This knowledge is crucial for evaluating combined thrombolysis and hypothermia therapies for acute ischemic stroke.