2009
DOI: 10.3324/haematol.2009.008037
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Identification of high oxygen affinity hemoglobin variants in the investigation of patients with erythrocytosis

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Cited by 47 publications
(28 citation statements)
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“…Though the P50 values are well within normal range (22-28mmHg), but as compared to Indians, Kyrgyz had a higher mean P50 as compared to Indians representing a higher oxygen delivery. Additionally, our data rule-out the existence of abnormal Hb in either of the population group and the decrease in SpO 2 observed upon HA induction is due to increase in altitude Hb variants have been known to cause a reduction in oxygen supply to tissues (11). About 100 Hb variants are known in humans which can cause altered erythrocytosis (12).…”
Section: Discussionsupporting
confidence: 48%
“…Though the P50 values are well within normal range (22-28mmHg), but as compared to Indians, Kyrgyz had a higher mean P50 as compared to Indians representing a higher oxygen delivery. Additionally, our data rule-out the existence of abnormal Hb in either of the population group and the decrease in SpO 2 observed upon HA induction is due to increase in altitude Hb variants have been known to cause a reduction in oxygen supply to tissues (11). About 100 Hb variants are known in humans which can cause altered erythrocytosis (12).…”
Section: Discussionsupporting
confidence: 48%
“…The reduced intrinsic O 2 affinity of feline Hb clearly compensates for the loss of DPG-mediated regulation of O 2 binding, otherwise the constitutively elevated blood-O 2 affinity would impair O 2 unloading to the cells of respiring tissues. This is evidenced by the fact that human Hb mutants with suppressed DPG sensitivity are invariably associated with erythrocytosis (often at clinically pathological levels) caused by inadequate tissue oxygenation (Percy et al, 2009). …”
Section: Allosteric Regulatory Control Of Feline Hbsmentioning
confidence: 99%
“…A high-affinity hemoglobin should be ruled out in cases of erythrocytosis. 28 The conversion of 1,3 bisphosphoglycerate (BPG) to 2,3 BPG is catalyzed by the enzyme bisphosphoglycerate mutase. Hemoglobin is converted to a low oxygen affinity state by binding to 2,3 BPG and presence of 2,3 BPG shifts the oxygen affinity curve to the right.…”
Section: Other Congenital Secondary Erythrocytosesmentioning
confidence: 99%