Dose-response of rt-PA and its combination with aspirin in a rat embolic stroke model.

Abstract:

:The efficacy and safety of thrombolysis with different dose regimens of recombinant tissue plasminogen activator (rt-PA) and its combination with aspirin was tested in an embolic stroke model. In rats the carotid territory was embolized with a single clot formed in a polyethylene tube and washed with saline. Fifteen minutes after embolization 10 animals were treated with rt-PA 10 mg kg-1; 11 with 15 mg kg-1; 12 with 20 mg kg-1 and 9 with 10 mg kg-1 + 20 mg kg-1 aspirin and 34 animals with saline. Rt-PA 10 mg kg-1 reduced median infarct volume (in percent of the ipsilateral hemisphere volume) from 19.5 to 4.8; rt-PA 15 mg kg-1 to 2.0; rt-PA 20 mg kg-1 to 0.0, while rt-PA 10 mg kg-1 + aspirin resulted in a median infarct volume of 9.5%. Thrombolytic therapy significantly and dose dependently (p = 0.001) reduced the infarct volume, improved the presacrifice clinical score and increased (p = 0.02) angiographically verified reperfusion. There was no additional benefit of coadministration of aspirin.

journal_name

Neuroreport

journal_title

Neuroreport

authors

Overgaard K,Sereghy T,Pedersen H,Boysen G

doi

10.1097/00001756-199210000-00027

subject

Has Abstract

pub_date

1992-10-01 00:00:00

pages

925-8

issue

10

eissn

0959-4965

issn

1473-558X

journal_volume

3

pub_type

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