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Abstract:
We treated four anesthetized dogs (Canis familiaris) with the platelet activating factor (PAF) receptor antagonist kadsurenone prior to 60 min of multifocal ischemia induced by air embolism, and measured neuronal recovery, blood flow and autologous Indium III labeled platelet accumulation for 4 h after ischemia. Four anesthetized animals with identical ischemia served as controls. Kadsurenone (3 mg/kg) administered 5 min prior to ischemia and continuously (1 mg/kg/hr) throughout ischemia and recovery significantly enhanced recovery of cortical somatosensory evoked response (CSER) amplitude (% of baseline) when compared to controls (27-36% vs 9-14%, p < 0.05). We estimated platelet accumulation as Indium III activity (cmp/g tissue) in the injured hemisphere minus that in the non-injured hemisphere. Kadsurenone treated animals did not exhibit significantly altered Indium III platelet accumulation when compared to controls (6158 + or - 2386 vs 9979 + or - 3852, mean + or - SEM). Beneficial effects of PAF receptor blockade other than those on platelet accumulation may be involved. Reprints.
| Limitations: |
 APPROVED FOR PUBLIC RELEASE |
| Description: |
Rept. no. 5, 1984-1986 |
| Pages: |
7 |
| Report Date: |
19 OCT 1987 |
| Report Number: |
A362791 |
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