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Effect of acute hypernatremia induced by hypertonic saline administration on endothelial glycocalyx in rabbits

D. Astapenko, V. Dostalova, V. Dostalova, J. Kraus, V. Radochova, P. Dostal, A. Ticha, R. Hyspler, C. Lehmann, V. Cerny,

. 2019 ; 72 (1) : 107-116. [pub] -

Language English Country Netherlands

Document type Journal Article

Persistent link   https://www.medvik.cz/link/bmc19045155

Grant support
NV15-31881A MZ0 CEP Register

BACKGROUND AND OBJECTIVE: The endothelial glycocalyx (EG) is fragile and sensitive to damage such as exposure to hypernatremia. Our aim was to describe the influence of hypernatremia on the EG in sublingual and brain microcirculation in rabbits. METHODS: Hypernatremia was induced by intravenous administration of 10% NaCl solution. The sublingual and brain microcirculation were evaluated by the Side-stream Dark Field imaging before (T1) and 20 minutes after infusion of 10% saline (T2). Damage to the EG was quantified by automated analysis of Perfused Boundary Region (PBR) indicating the amount of penetration of red blood cells into the EG. Syndecan-1 levels were also measured. RESULTS: Hypernatremia was reached in all 20 animals, the PBR values of the sublingual area raised from 1,98 (0,3) to 2,17 (0,18) μm (p = 0,05). The levels of syndecan-1 (1,23 (0,36); 1,31 (0,33) ng/l, p = 0,3) did not mirror PBR changes. CONCLUSIONS: Hypernatremia increased the PBR within the sublingual microcirculation in our animal model, probably due to compression of the EG related to temporary intravascular hypervolemia and changes of the EG charge in RBC instead of direct damaging effect on EG, which has been excluded by rather unchanged levels of syndecan-1.

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$a Astapenko, David $u Department of Anaesthesiology and Intensive Care Medicine, Charles University in Prague, Faculty of Medicine Hradec Kralove, University Hospital Hradec Kralove, Czech Republic.
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$a Effect of acute hypernatremia induced by hypertonic saline administration on endothelial glycocalyx in rabbits / $c D. Astapenko, V. Dostalova, V. Dostalova, J. Kraus, V. Radochova, P. Dostal, A. Ticha, R. Hyspler, C. Lehmann, V. Cerny,
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$a BACKGROUND AND OBJECTIVE: The endothelial glycocalyx (EG) is fragile and sensitive to damage such as exposure to hypernatremia. Our aim was to describe the influence of hypernatremia on the EG in sublingual and brain microcirculation in rabbits. METHODS: Hypernatremia was induced by intravenous administration of 10% NaCl solution. The sublingual and brain microcirculation were evaluated by the Side-stream Dark Field imaging before (T1) and 20 minutes after infusion of 10% saline (T2). Damage to the EG was quantified by automated analysis of Perfused Boundary Region (PBR) indicating the amount of penetration of red blood cells into the EG. Syndecan-1 levels were also measured. RESULTS: Hypernatremia was reached in all 20 animals, the PBR values of the sublingual area raised from 1,98 (0,3) to 2,17 (0,18) μm (p = 0,05). The levels of syndecan-1 (1,23 (0,36); 1,31 (0,33) ng/l, p = 0,3) did not mirror PBR changes. CONCLUSIONS: Hypernatremia increased the PBR within the sublingual microcirculation in our animal model, probably due to compression of the EG related to temporary intravascular hypervolemia and changes of the EG charge in RBC instead of direct damaging effect on EG, which has been excluded by rather unchanged levels of syndecan-1.
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$a Dostalova, Vlasta $u Department of Anaesthesiology and Intensive Care Medicine, Charles University in Prague, Faculty of Medicine Hradec Kralove, University Hospital Hradec Kralove, Czech Republic.
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$a Dostalova, Vlasta $u Department of Anaesthesiology and Intensive Care Medicine, Charles University in Prague, Faculty of Medicine Hradec Kralove, University Hospital Hradec Kralove, Czech Republic.
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$a Kraus, Jaroslav $u Department of Anaesthesiology and Intensive Care Medicine, Charles University in Prague, Faculty of Medicine Hradec Kralove, University Hospital Hradec Kralove, Czech Republic.
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$a Radochova, Vera $u University of Defence in Brno, Faculty of Military Health in Hradec Kralove, Czech Republic.
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$a Dostal, Pavel $u Department of Anaesthesiology and Intensive Care Medicine, Charles University in Prague, Faculty of Medicine Hradec Kralove, University Hospital Hradec Kralove, Czech Republic.
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$a Ticha, Alena $u Department of Clinical Biochemistry and Diagnostics, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic.
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$a Hyspler, Radomir $u Department of Clinical Biochemistry and Diagnostics, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic.
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$a Lehmann, Christian $u Departments of Anaesthesia, Pain Management and Perioperative Medicine, Dalhousie University, Halifax, NS, Canada. Department of Pharmacology, Microbiology and Immunology, Dalhousie University, Halifax, NS, Canada.
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$a Cerny, Vladimir $u Department of Anaesthesiology and Intensive Care Medicine, Charles University in Prague, Faculty of Medicine Hradec Kralove, University Hospital Hradec Kralove, Czech Republic. Departments of Anaesthesia, Pain Management and Perioperative Medicine, Dalhousie University, Halifax, NS, Canada. Department of Anesthesiology, Perioperative Medicine and Intensive Care, J.E. Purkinje University, Masaryk Hospital, Usti nad Labem, Czech Republic. Department of Research and Development, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic.
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