Effect of helium preconditioning on neurological decompression sickness in rats

Beitrag in einer Fachzeitschrift

Details zur Publikation

Autorinnen und Autoren: Zhang R, Yu Y, Manaenko A, Bi H, Zhang N, Zhang L, Zhang T, Ye Z, Sun X
Zeitschrift: Journal of Applied Physiology
Jahr der Veröffentlichung: 2019
Band: 126
Heftnummer: 4
Seitenbereich: 934-940
ISSN: 8750-7587


Decompression sickness (DCS) occurs because of an excessively rapid and extensive reduction of the ambient pressure. Bubble-induced spinal cord ischemia is generally considered as a part of neurological DCS pathogenesis. Because helium preconditioning (HPC) recently demonstrated beneficial properties against ischemic damage, we hypothesized that HPC may decrease the neurological deficits of DCS in rats. Seventy-five male Sprague-Dawley rats were divided into a non-HPC group ( n = 25) and a HPC group ( n = 25) and 25 naive animals that were euthanized for histological examination ( n = 5) or anesthetized for baseline somatosensory evoked potential (SSEP) recordings ( n = 20). To induce DCS, rats were compressed with air to a pressure of 709 kPa for 60 min and decompressed at a rate of 203 kPa/min. HPC was administered as three episodes of 79% helium-21% oxygen mixture inhalation for 5 min interspersed with 5 min of air breathing. We found that HPC resulted in significantly decreased DCS incidence and delay of DCS onset. HPC also improved animal performance on the grip test after decompression and significantly ameliorated decompression-induced decrease of platelet number. Furthermore, the incidence of abnormal SSEP waves and histological spinal lesions was significantly reduced by HPC. We conclude that HPC can decrease the occurrence of DCS and ameliorate decompression-induced neurological deficits. NEW & NOTEWORTHY Helium preconditioning ameliorates decompression-induced neurological deficits in rats. Helium breathing before air dives may prevent neurological deficit and attenuate symptoms after decompression.

Einrichtungen weiterer Autorinnen und Autoren

Second Military Medical University (SMMU) / 第二军医大学


Zhang, R., Yu, Y., Manaenko, A., Bi, H., Zhang, N., Zhang, L.,... Sun, X. (2019). Effect of helium preconditioning on neurological decompression sickness in rats. Journal of Applied Physiology, 126(4), 934-940. https://dx.doi.org/10.1152/japplphysiol.00275.2018

Zhang, Rongjia, et al. "Effect of helium preconditioning on neurological decompression sickness in rats." Journal of Applied Physiology 126.4 (2019): 934-940.


Zuletzt aktualisiert 2019-06-05 um 08:53