Ischaemia-modified albumin during experimental apnoea

Canadian Journal of Physiology and Pharmacology
Fabrice JouliaR Guieu

Abstract

Ischaemia-modified albumin (IMA) is a marker of the release of reactive oxygen species (ROS) during hypoxaemia. In elite divers, breath-hold induces ROS production. Our aim was to evaluate the kinetics of IMA serum levels during apnea. Twenty breath-hold divers were instructed to perform a submaximal static breath-hold. Twenty non-diver subjects served as controls. Blood samples were collected at rest, every minute, at the end of breath-hold, and 10 min after recovery. The IMA level increased after 1 min of breath-hold (p < 0.003) and remained high until recovery. Divers were separated into 2 groups: subjects who held their breath for less than 4 min (G-4) and those who held it for more than 4 min (G+4). After 3 min of apnoea, the increase of IMA was higher in the G-4 group than in the G+4 group (p < 0.008). However, at the end of apnoea, the IMA level did not differ between groups. If IMA level was globally correlated with the apnoea duration, it is interesting to note that the higher IMA level was not found in the best divers. Similarly, if arterial blood oxygen saturation (SpO2) was globally inversely correlated with apnoea duration, the lowest SpO2 at the end of breath-hold was not found in the divers that performed the bes...Continue Reading

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Citations

Jun 7, 2018·Clinical Chemistry and Laboratory Medicine : CCLM·Satoshi KimuraAlejandro Gugliucci
Mar 27, 2019·Physiological Reports·Marion MarlingeFabrice C Joulia
Apr 2, 2021·European Journal of Applied Physiology·Antonis EliaMatthew J Lees

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