Abstract
The health significance of transient ischemic attacks (TIAs) is largely underestimated. Often, TIAs are not given significant importance, and in vain, because TIAs are a predictor of the development of serious cardiovascular diseases and even death. Because of this, and because of the difficulty in diagnosing the disease, TIAs and related microinfarcts are poorly investigated. Photothrombotic models of stroke and TIA allow reproducing the occlusion of small brain vessels, even single ones. When dosing the concentration of photosensitizer, intensity and irradiation time, it is possible to achieve occlusion of well-defined small vessels with high reproducibility, and with the help of modern methods of blood flow assessment it is possible to achieve spontaneous restoration of blood flow without vessel rupture. In this review, we discuss the features of microinfarcts and the contemporary experimental approaches used to model TIA and microinfarcts, with an emphasis on models using the principle of photothrombosis of brain vessels. We review modern techniques for in vivo detection of blood flow in small brain vessels, as well as biomarkers of microinfarcts.
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This work was supported by the Russian Science Foundation (Grant no. 21-15-00188).
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Kalyuzhnaya, Y., Khaitin, A. & Demyanenko, S. Modeling transient ischemic attack via photothrombosis. Biophys Rev 15, 1279–1286 (2023). https://doi.org/10.1007/s12551-023-01121-1
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DOI: https://doi.org/10.1007/s12551-023-01121-1