Ventilatory changes in the golden hamster, Mesocricetus auratus, compared with the laboratory rat, Rattus norvegicus, during hypercapnia and/or hypoxia

1. 1. Tidal volume, respiratory frequency, and minute volume were measured with total body plethysmography. 2. 2. Both hypercapnic (0–7% CO 2) and hypoxic (13–21% O 2) gas mixtures caused “dose” related hyperventilation in the hamsters. However, there was no synergism between combined stimuli. 3. 3....

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Veröffentlicht in:	Comparative biochemistry and physiology. A, Comparative physiology Comparative physiology, 1984, Vol.77 (2), p.267-273
Hauptverfasser:	Holloway, Deborah A, Heath, Alan G
Format:	Artikel
Sprache:	eng
Schlagworte:	Air breathing Animals Biological and medical sciences Carbon Dioxide - metabolism Cricetinae - physiology Fundamental and applied biological sciences. Psychology Hypercapnia - physiopathology Hypoxia - physiopathology Male Mesocricetus - physiology Oxygen Consumption Plethysmography Rats Rats, Inbred Strains - physiology Respiration Respiratory system: anatomy, metabolism, gas exchange, ventilatory mechanics, respiratory hemodynamics Space life sciences Species Specificity Vertebrates: respiratory system
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Zusammenfassung:	1. 1. Tidal volume, respiratory frequency, and minute volume were measured with total body plethysmography. 2. 2. Both hypercapnic (0–7% CO 2) and hypoxic (13–21% O 2) gas mixtures caused “dose” related hyperventilation in the hamsters. However, there was no synergism between combined stimuli. 3. 3. Rats exhibited greater hyperventilation than the hamsters during hypercapnic + hypoxic and hypercapnic exposures. Hamsters responded more than the rats to hypoxia alone. 4. 4. Greater blood buffering capacity of hamsters is a possible explanation for the species differences in ventilatory sensitivity.
ISSN:	0300-9629
DOI:	10.1016/0300-9629(84)90059-8