The effects of early insulin treatment combined with thrombolysis in rat embolic stroke.

Abstract:

:The therapeutic effect of insulin alone or insulin combined with 30 min delayed thrombolytic therapy was investigated in rats embolized in the right hemisphere with a fibrin clot made from autologous blood. Animals were killed seven days after embolization and the infarct volumes were measured in % of the affected hemisphere. Mortality was calculated as the number of animals dying spontaneously before the scheduled euthanasia. The median infarct volume in control animals (n = 12) was 24%. Insulin (3 IU kg(-1)) was given subcutaneously 15 min, 3 h, and 24 h after embolization (n = 12) and reduced median infarct volume to 11%. Human recombinant tissue plasminogen activator, 8 mg kg(-1), was infused intravenously during 45 min starting 30 min after embolization (n = 14), and the median infarct volume was 18% in this group. When the two treatments were combined, the median infarct volume was reduced to 11% (n = 14). The infarct volumes in the treatment groups were not significantly different from controls (p = 0.62, Kruskal Wallis test). Mortality rates increased from 0% among controls to 47% (p = 0.01) in the insulin alone and 38% (p = 0.02) in the combination therapy group. In conclusion, insulin treatment aiming at blood glucose levels around 2-4 mmol l(-1) was detrimental to clinical outcome causing significantly increased mortality.

journal_name

Neurol Res

journal_title

Neurological research

authors

Meden P,Andersen M,Overgaard K,Rasmussen RS,Boysen G

doi

10.1179/016164102101200096

subject

Has Abstract

pub_date

2002-06-01 00:00:00

pages

399-404

issue

4

eissn

0161-6412

issn

1743-1328

journal_volume

24

pub_type

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