Changes in Cerebral Blood Flow in the Postischemic Period
- Authors: Gorshkova O.P.1, Shuvaeva V.N.1, Lentsman M.V.1, Artem’eva A.I.2, Dvoretskii D.P.2
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Affiliations:
- Laboratory of Physiology of the Cardiovascular and Lymphatic Systems
- Laboratory of Digestion Physiology, I. P. Pavlov Institute of Physiology, Russian Academy of Sciences
- Issue: Vol 160, No 5 (2016)
- Pages: 610-613
- Section: Article
- URL: https://journals.rcsi.science/0007-4888/article/view/236836
- DOI: https://doi.org/10.1007/s10517-016-3229-1
- ID: 236836
Cite item
Abstract
Experiments on Wistar rats showed that blood flow in the cortex and subcortical brain structures was not completely restored within 21 days after transient ischemia caused by bilateral carotid artery occlusion with controlled hypotension. After 7 days of reinfusion, the end-diastolic blood flow velocity increases with simultaneous decrease in pulsation index, which indicates the decrease in peripheral vascular resistance. During the following 14 days, peripheral blood resistance increases, as was seen from the increased peak systolic blood flow velocity, mean blood flow velocity over the heart cycle, and pulsation index. These changes are likely a delayed manifestation of ischemic reperfusion injury to brain microvessels (no-reflow phenomenon) and are determined by changes in blood rheologiy and pial vessel lumen.
About the authors
O. P. Gorshkova
Laboratory of Physiology of the Cardiovascular and Lymphatic Systems
Author for correspondence.
Email: o_gorshkova@inbox.ru
Russian Federation, St. Petersburg
V. N. Shuvaeva
Laboratory of Physiology of the Cardiovascular and Lymphatic Systems
Email: o_gorshkova@inbox.ru
Russian Federation, St. Petersburg
M. V. Lentsman
Laboratory of Physiology of the Cardiovascular and Lymphatic Systems
Email: o_gorshkova@inbox.ru
Russian Federation, St. Petersburg
A. I. Artem’eva
Laboratory of Digestion Physiology, I. P. Pavlov Institute of Physiology, Russian Academy of Sciences
Email: o_gorshkova@inbox.ru
Russian Federation, St. Petersburg
D. P. Dvoretskii
Laboratory of Digestion Physiology, I. P. Pavlov Institute of Physiology, Russian Academy of Sciences
Email: o_gorshkova@inbox.ru
Russian Federation, St. Petersburg