The blood oxygen binding properties of hypoxicSalmo gairdneri
| Autor: | Mikko Nikinmaa, Antti Soivio, Kai Westman |
|---|---|
| Rok vydání: | 1980 |
| Předmět: |
0303 health sciences
medicine.medical_specialty Physiology 030310 physiology chemistry.chemical_element Hypoxia (environmental) Bohr effect Biochemistry Oxygen affinity Oxygen 03 medical and health sciences Endocrinology Oxygen-carrying chemistry Internal medicine medicine Liberation Animal Science and Zoology medicine.symptom Ecology Evolution Behavior and Systematics Oxygen binding 030304 developmental biology Acidosis |
| Zdroj: | Journal of Comparative Physiology ? B. 136:83-87 |
| ISSN: | 1432-136X 0340-7616 |
| DOI: | 10.1007/bf00688627 |
| Popis: | The blood oxygen binding properties of rainbow trout responded to environmental hypoxia (the oxygen saturation of water 30% at 11°C) in three ways. The quickest response was a moderate acidosis, leading to slightly lowered blood oxygen loading due to the Bohr effect. The second response, an increase of blood oxygen carrying capacity, was completed with 6 h from the onset of hypoxia. The speed of the response suggests that the formation of new haemoglobin played no practical role, the increase being caused either by a decrease of plasma volume or the liberation of erythrocytes from a storage organ. The slowest response, a 25% increase of the blood oxygen affinity within a week of hypoxia, was probably caused by the concurrent decrease of the erythrocyte ATP concentration from 4.45 to 2.51 μmol/ml erythrocytes. |
| Databáze: | OpenAIRE |
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