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The topography of microthrombi in ischemic brain infarct
N Heye1, C Paetzold, R Steinberg
1Institute of Neuropathology, Freie Universität, Berlin, Germany.
Abstract:
Following cerebral ischemia a tendency to increased coagulation can be detected. Vascular occlusion may develop either as a result of local thrombus formation or from emboli caused by circulating platelet aggregates. We studied the localization of microthrombi and their effects on tissue in double-hemisphere sections. Fresh brain infarcts showed a large number of microthrombi limited to the ischemic region. In more advanced infarcts they were found mainly at the border of the necrosis and diffusely distributed over both hemispheres. Older, subsiding infarcts showed only isolated microthrombi limited to the area of the necrosis. This indicates that great importance must be attached to microthrombi in infarct progression.
Insights
Microthrombi are key in brain infarct progression after cerebral ischemia. Their location shifts from the ischemic core to the border and surrounding areas as infarcts develop and subside.
Area of Science:
- Neurology
- Pathology
- Vascular Biology
Background:
- Cerebral ischemia can lead to increased blood coagulation.
- Vascular occlusion in stroke may result from local thrombus formation or emboli from platelet aggregates.
Purpose of the Study:
- To investigate the localization and impact of microthrombi in brain tissue following cerebral ischemia.
Main Methods:
- Analysis of microthrombi distribution in double-hemisphere sections of fresh, advanced, and subsiding brain infarcts.
Main Results:
- Fresh infarcts showed numerous microthrombi confined to the ischemic area.
- Advanced infarcts exhibited microthrombi at the necrosis border and diffusely in both hemispheres.
- Older infarcts had isolated microthrombi within the necrotic area.
Conclusions:
- Microthrombi play a significant role in the progression of ischemic stroke.
- Understanding microthrombi localization is crucial for managing infarct development.