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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
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pubmed:dateCreated |
1979-7-28
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pubmed:abstractText |
Fetal haemoglobin (HbF) levels have been measured in 137 normal (AA) subjects, 109 with the sickle-cell trait (AS) and 237 with sickle-cell anaemia (SS) from the oasis population of Eastern Saudi Arabia. In addition the proportion of F-cells has been estimated in 71 AA, 51 AS and 34 SS subjects. The mean HbF% (and the range of F-cells %) were: AA 0.77 (0.3--18), AS 1.38 (2.3--43) and SS 25.56 (33--98). The distribution of Hb F was always heterocellular. The influence of pregnancy accounts for most of the excess female subjects with sickle-cell trait showing raised Hb F and F-cells. Whilst the normal Arabs and those with sickle-cell trait did not differ from comparable groups of American blacks, both the % Hb F and % F-cells in Saudi Arabian patients with sickle-cell anaemia were much higher than in Blacks. The high Hb F levels in individuals with sickle-cell anaemia are not due to coexistent glucose-6-phosphate dehydrogenase deficiency or alpha-thalassaemia trait, and the Hb F level showed an inverse correlation with the degree of haemolysis. These findings indicate that the unusually elevated levels of Hb F are not due to an associated high frequency of a gene for hetero-cellular hereditary persistence of fetal haemoglobin in the oasis population, but rather from a genetically determined absolute increase in Hb F production related in some way to the SS genotype.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Nov
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pubmed:issn |
0007-1048
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
40
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
415-29
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:749927-Adolescent,
pubmed-meshheading:749927-Adult,
pubmed-meshheading:749927-Age Factors,
pubmed-meshheading:749927-Anemia, Sickle Cell,
pubmed-meshheading:749927-Child,
pubmed-meshheading:749927-Child, Preschool,
pubmed-meshheading:749927-Female,
pubmed-meshheading:749927-Fetal Hemoglobin,
pubmed-meshheading:749927-Genotype,
pubmed-meshheading:749927-Great Britain,
pubmed-meshheading:749927-Hemoglobin A2,
pubmed-meshheading:749927-Humans,
pubmed-meshheading:749927-Male,
pubmed-meshheading:749927-Pregnancy,
pubmed-meshheading:749927-Saudi Arabia,
pubmed-meshheading:749927-Sex Factors
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pubmed:year |
1978
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pubmed:articleTitle |
Fetal haemoglobin production and the sickle gene in the oases of Eastern Saudi Arabia.
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pubmed:publicationType |
Journal Article,
Comparative Study,
Research Support, U.S. Gov't, P.H.S.
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