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- W2022505221 abstract "Exploratory work was undertaken in the anesthetized ferret to determine if it is an applicable species for use as an in vivo ischemic model and suitable for recovery surgical procedures. Experimental protocols utilizing varying combinations of left anterior descending (LAD) coronary artery occlusion (30, 60, 90 min) and reperfusion (4, 6, 18–24 hr) were evaluated. The results indicated that a 90-min/6-hr combination led to the production of an infarct equivalent, or slightly greater, in size to that observed following coronary artery occlusion either with and without reflow during an 18–24-hr recovery period prior to sacrifice. A combination of 90 min occlusion/4 hr reperfusion yielded an infarct area ca. 50% of that associated with 6 hr interval of reflow. An occlusive interval of 60 min or less combined with any reperfusion interval lack reproducibility. The administration of saline in varying volumes by different routes (IV versus left atrial) had no influence on either the absolute or, more especially, the relative (i.e., as a percent of left ventricle) tissue damage provoked by a 90-min/6-hr occlusion/reperfusion maneuver of the LAD coronary artery. When evaluated as a reference standard, Superoxide dismutase (SOD) infused via the left atrium at a dose of 5 mgkg afforded a 36% reduction in the area of ischemic damage in this model. These studies demonstrated that the ferret represents a useful species for initial, rapid, and economic—both in terms of cost and drug substance utilization—in vivo myocardial salvage screening assessments. The model permits an interpretation of potential test agent efficacy, dosage requirements, and hemodynamic actions, and it is suitable for basing a go/no-go decision that continued experimental development in more labor intense preparations is warranted." @default.
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- W2022505221 title "Use of the ferret for a myocardial ischemia/salvage model" @default.
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- W2022505221 doi "https://doi.org/10.1016/0160-5402(90)90065-s" @default.
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