S100B and NSE serum concentrations after simulated diving in rats


The purpose of this study was to assess whether one could detect S100 calcium‐binding protein B (S100B) and neuron‐specific enolase (NSE) in serum of rats after a simulated dive breathing air, with the main hypothesis that the serum concentrations of S100B and NSE in rats will increase above pre‐exposure levels following severe decompression stress measured as venous gas emboli (VGE). The dive group was exposed to a simulated air dive to 700 kPa for 45 min. Pulmonary artery was monitored for vascular gas bubbles by ultrasound. Pre‐ and postdive blood samples were analyzed for S100B and NSE using commercially available Elisa kits. There was no increase in serum S100B or NSE after simulated diving and few of the animals were showing high bubble grades after the dives. The present study examined whether the protein biomarkers S100B and NSE could be found in serum from rats after exposure to a simulated dive to 700 kPa for 45 min breathing air. There were no differences in serum concentrations before versus after the dive exposure. This may be explained by the lack of vascular gas bubbles after the dives.

Keywords:
biomarker, blood–brain barrier, central nervous system, diving


Autoři: Marianne B. Havnes;  Yvonne Kerlefsen;  Andreas Møllerløkken
Působiště autorů: Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, N-7489, Norway
Vyšlo v časopise:
Kategorie: Original Research
prolekare.web.journal.doi_sk: 10.14814/phy2.12546

© 2015 The Authors. Physiological Reports published by Wiley Periodicals, Inc. on behalf of the American Physiological Society and The Physiological Society.
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Souhrn

The purpose of this study was to assess whether one could detect S100 calcium‐binding protein B (S100B) and neuron‐specific enolase (NSE) in serum of rats after a simulated dive breathing air, with the main hypothesis that the serum concentrations of S100B and NSE in rats will increase above pre‐exposure levels following severe decompression stress measured as venous gas emboli (VGE). The dive group was exposed to a simulated air dive to 700 kPa for 45 min. Pulmonary artery was monitored for vascular gas bubbles by ultrasound. Pre‐ and postdive blood samples were analyzed for S100B and NSE using commercially available Elisa kits. There was no increase in serum S100B or NSE after simulated diving and few of the animals were showing high bubble grades after the dives. The present study examined whether the protein biomarkers S100B and NSE could be found in serum from rats after exposure to a simulated dive to 700 kPa for 45 min breathing air. There were no differences in serum concentrations before versus after the dive exposure. This may be explained by the lack of vascular gas bubbles after the dives.

Keywords:
biomarker, blood–brain barrier, central nervous system, diving


Zdroje

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