High blood oxygen affinity in the air-breathing swamp eel Monopterus albus

2014 ◽  
Vol 178 ◽  
pp. 102-108 ◽  
Author(s):  
Christian Damsgaard ◽  
Inge Findorf ◽  
Signe Helbo ◽  
Yigit Kocagoz ◽  
Rasmus Buchanan ◽  
...  
Keyword(s):  
Oxygen Affinity ◽  
Blood Oxygen ◽  
Air Breathing ◽  
Monopterus Albus ◽  
Blood Oxygen Affinity ◽  
Swamp Eel

Relationship between phosphorylated metabolic intermediates and whole blood oxygen affinity in some air-breathing and water-breathing teleosts

1978 ◽  
Vol 56 (4) ◽  
pp. 887-890 ◽  
Author(s):  
R. E. Isaacks ◽  
H. D. Kim ◽  
D. R. Harkness
Keyword(s):  
Whole Blood ◽  
Oxygen Affinity ◽  
Organic Phosphate ◽  
Blood Oxygen ◽  
Air Breathing ◽  
Metabolic Intermediates ◽  
Arapaima Gigas ◽  
Blood Oxygen Affinity ◽  
The Relationship ◽  
Cell Volumes

The relationship between whole blood oxygen affinity and erythrocyte (RBC) organic phosphate composition of three species of air-breathing teleosts (Lepidosiren paradoxa, Electrophorus electrocus, and Synbranchus marmoratus) and three pairs of closely related air-breathing and water-breathing fishes (Arapaima gigas vs. Osteoglossum bicirrhosom, Hoplerythrinus unitaeniatus vs. Hoplias malabaricos, and Pterygoplichthys sp. vs. Pseudoplatystoma sp.) have been studied.Packed cell volumes, hemoglobin concentrations, whole blood P50's, and total erythrocyte phosphates are higher in air breathers than in water breathers.GTP and ATP are the predominant organic phosphates in the erythrocytes of all of the species studied except A. gigas, which contains inositol pentaphosphate as the major organic phosphate at a level of 1.8 μmol/cm3 RBC or 39% of the total cell phosphate.

Blood oxygen affinity in high- and low-altitude populations of the deer mouse

1982 ◽  
Vol 48 (1) ◽  
pp. 89-105 ◽  
Author(s):  
Lee R.G. Snyder ◽  
Stephen Born ◽  
Andrew J. Lechner
Keyword(s):  
Deer Mouse ◽  
Oxygen Affinity ◽  
Blood Oxygen ◽  
Blood Oxygen Affinity ◽  
Low Altitude

scholarly journals Temporal changes of plasma erythropoietin level in hypobaric hypoxic mice and the influence of an altered blood oxygen affinity.

1989 ◽  
Vol 39 (6) ◽  
pp. 833-846 ◽  
Author(s):  
Satoshi SHIMIZU ◽  
Susumu SAKATA ◽  
Yasunori ENOKI ◽  
Yoshimi OHGA ◽  
Izumi OKI ◽  
...  
Keyword(s):  
Oxygen Affinity ◽  
Temporal Changes ◽  
Blood Oxygen ◽  
Blood Oxygen Affinity ◽  
Altered Blood ◽  
Erythropoietin Level

scholarly journals Autosomal dominant polycythemia

Blood ◽  
1985 ◽  
Vol 66 (5) ◽  
pp. 1208-1214 ◽  
Author(s):  
JT Prchal ◽  
WM Crist ◽  
E Goldwasser ◽  
G Perrine ◽  
JF Prchal
Keyword(s):  
Autosomal Dominant ◽  
Oxygen Affinity ◽  
Colony Growth ◽  
Blood Oxygen ◽  
Autosomal Dominant Trait ◽  
Volume Measurements ◽  
Blood Oxygen Affinity ◽  
Low Levels ◽  
Stimulation Of

Two families with polycythemia inherited as an autosomal dominant trait are described. Serial hemoglobin determinations in multiple family members and RBC volume measurements in selected affected subjects documented their polycythemia. Measurements of arterial p02s, p50s, and blood oxygen affinity were normal in all affected individuals from each family who were tested. Erythropoietin (EPO) levels were low in affected individuals from family 1 and normal in affected members of family 2. Stimulation of in vitro CFU-E colony growth by low levels of EPO was significantly increased in subjects from family 1, but normal in those affected from family 2. We conclude that although the inheritance pattern for the polycythemia in both of these families appeared to be the same, the biologic defect leading to the disorder in each of these unique families was different. The precise mechanism of the increased EPO sensitivity noted in affected subjects from family 1 awaits elucidation.

scholarly journals The Circulatory Response to Acute Hypoxia in Octopus

1983 ◽  
Vol 104 (1) ◽  
pp. 59-71 ◽  
Author(s):  
M.J. WELLS ◽  
J. WELLS
Keyword(s):  
Oxygen Uptake ◽  
Acute Hypoxia ◽  
Oxygen Affinity ◽  
Octopus Vulgaris ◽  
Blood Oxygen ◽  
Total Oxygen ◽  
Circulatory Response ◽  
The Central Nervous System ◽  
Blood Oxygen Affinity ◽  
Cutaneous Respiration

Octopus vulgaris can regulate its oxygen uptake in a closed respirometer down to a Poo2 of less than 70 mmHg. As the tankwater Poo2 falls the hearts slow down. Pulse amplitudes and mean pressures fall in the afferent branchial vessels and in the dorsal aorta. Despite behavioural changes - expansion of the interbrachial web and extension of the arms - that might imply this, the proportion of the total oxygen uptake attributable to cutaneous respiration (less than 13%) does not alter as the external Poo2 falls. The response of the hearts to a low Poo2 is not affected by severing the nerve supply from the central nervous system, or by removal of the heart ganglia. It is evidently determined by oxygen lack and not by the accumulation of CO2 or other metabolites, since the same effects are achieved by placing the animals in water where the Poo2 has been reduced by boiling. The conclusion that regulation does not depend upon circulatory responses to hypoxia is considered in the light of recent work on the changes in blood oxygen affinity associated with acute hypoxia in cephalopods.

Physiological effects of lowered blood oxygen affinity in dogs

1978 ◽  
Vol 33 (3) ◽  
pp. 263-270 ◽  
Author(s):  
Michael A. Krall ◽  
James D. Bristow ◽  
J. Eugene Welch ◽  
James Metcalfe
Keyword(s):  
Oxygen Affinity ◽  
Physiological Effects ◽  
Blood Oxygen ◽  
Blood Oxygen Affinity
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