Metabolic and heart rate responses to hypoxia in early chicken embryos in the transition from diffusive to convective gas transport

Highlights ► During avian embryogenesis, the hypoxic drop in V ˙ O 2 did not cause a payment back of the O2 debt. ► At age E3, hypoxic hypometabolism was more prominent than at E5. ► The opposite was the case for heart rate (HR). ► In early embryos the O2 saving during hypometabolism can protect car...

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Published inRespiratory physiology & neurobiology Vol. 181; no. 2; pp. 109 - 117
Main Authors Mortola, Jacopo P, Marinescu, Daniel-Costin, Pierre, Annie, Artman, Lise
Format Journal Article
LanguageEnglish
Published Netherlands Elsevier B.V 30.04.2012
Subjects
Animals
Cardiac function
Chick Embryo
Cold Temperature
Convection
Diffusion
Embryogenesis
Heart - embryology
Heart - physiopathology
Heart Rate - physiology
Hypoxia - embryology
Hypoxia - physiopathology
Hypoxic hypometabolism
Medical Education
Myocardium - metabolism
Oxygen consumption
Oxygen Consumption - physiology
Pulmonary/Respiratory
Oxygen consumption
Embryogenesis
Cardiac function
Hypoxic hypometabolism
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Summary:Highlights ► During avian embryogenesis, the hypoxic drop in V ˙ O 2 did not cause a payment back of the O2 debt. ► At age E3, hypoxic hypometabolism was more prominent than at E5. ► The opposite was the case for heart rate (HR). ► In early embryos the O2 saving during hypometabolism can protect cardiac activity.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1569-9048
1878-1519
DOI:10.1016/j.resp.2012.02.002