Impairments of cerebral blood flow microcirculation in rats brought on by cardiac cessation and respiratory arrest.
Autor: | Piavchenko G; Department of Histology, Cytology and Embryology, I.M. Sechenov First Moscow State Medical University, Moscow, Russia.; V.A. Negovsky Scientific Research Institute of General Reanimatology, Federal Research and Clinical Centre of Intensive Care Medicine and Rehabilitology, Moscow, Russia.; Cell Physiology and Pathology Laboratory, Orel State University, Orel, Russia., Kozlov I; R&D Center of Biomedical Photonics, Orel State University, Orel, Russia., Dremin V; Cell Physiology and Pathology Laboratory, Orel State University, Orel, Russia.; R&D Center of Biomedical Photonics, Orel State University, Orel, Russia.; College of Engineering and Physical Sciences, Aston University, Birmingham, UK., Stavtsev D; R&D Center of Biomedical Photonics, Orel State University, Orel, Russia.; Institute of Biomedical Systems, National Research University of Electronic Technology (MIET), Zelenograd, Russia., Seryogina E; Cell Physiology and Pathology Laboratory, Orel State University, Orel, Russia., Kandurova K; R&D Center of Biomedical Photonics, Orel State University, Orel, Russia., Shupletsov V; R&D Center of Biomedical Photonics, Orel State University, Orel, Russia., Lapin K; V.A. Negovsky Scientific Research Institute of General Reanimatology, Federal Research and Clinical Centre of Intensive Care Medicine and Rehabilitology, Moscow, Russia., Alekseyev A; Cell Physiology and Pathology Laboratory, Orel State University, Orel, Russia., Kuznetsov S; Department of Histology, Cytology and Embryology, I.M. Sechenov First Moscow State Medical University, Moscow, Russia., Bykov A; Opto-Electronics and Measurement Techniques, Faculty of Information and Electrical Engineering, University of Oulu, Oulu, Finland., Dunaev A; Cell Physiology and Pathology Laboratory, Orel State University, Orel, Russia.; R&D Center of Biomedical Photonics, Orel State University, Orel, Russia., Meglinski I; Department of Histology, Cytology and Embryology, I.M. Sechenov First Moscow State Medical University, Moscow, Russia.; V.A. Negovsky Scientific Research Institute of General Reanimatology, Federal Research and Clinical Centre of Intensive Care Medicine and Rehabilitology, Moscow, Russia.; Opto-Electronics and Measurement Techniques, Faculty of Information and Electrical Engineering, University of Oulu, Oulu, Finland.; Immanuel Kant Baltic Federal University, Kaliningrad, Russia.; College of Engineering and Physical Sciences, Aston University, Birmingham, UK. |
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Jazyk: | angličtina |
Zdroj: | Journal of biophotonics [J Biophotonics] 2021 Dec; Vol. 14 (12), pp. e202100216. Date of Electronic Publication: 2021 Sep 28. |
DOI: | 10.1002/jbio.202100216 |
Abstrakt: | The impairments of cerebral blood flow microcirculation brought on by cardiac and respiratory arrest were assessed with multi-modal diagnostic facilities, utilising laser speckle contrast imaging, fluorescence spectroscopy and diffuse reflectance spectroscopy. The results of laser speckle contrast imaging show a notable reduction of cerebral blood flow in small and medium size vessels during a few minutes of respiratory arrest, while the same effect was observed in large sinuses and their branches during the circulatory cessation. Concurrently, the redox ratio assessed with fluorescence spectroscopy indicates progressing hypoxia, NADH accumulation and increase of FAD consumption. The results of diffuse reflectance spectra measurements display a more rapid grow of the perfusion of deoxygenated blood in case of circulatory impairment. In addition, consequent histopathological analysis performed by using new tissue staining procedure developed in-house. It shows notably higher reduction of size of the neurons due to their wrinkling within brain tissues influenced by circulation impair. Whereas, the brain tissues altered with the respiratory arrest demonstrate focal perivascular oedema and mild hypoxic changes of neuronal morphology. Thus, the study suggests that consequences of a cessation of cerebral blood flow become more dramatic and dangerous compare to respiratory arrest. (© 2021 The Authors. Journal of Biophotonics published by Wiley-VCH GmbH.) |
Databáze: | MEDLINE |
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