ISSN:
1432-1203
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Biologie
,
Medizin
Notizen:
Summary In the Far East two types of α-thalassemia genes, namely α-thalassemia1 (α-thal1) and α-thalassemia2 (α-thal2) exist. Definite diagnosis of the α-thal1 and α-thal2 traits is very difficult because their hematological findings are minimally abnormal or normal. This study attempts to characterize the heterozygotes by hemoglobin chain synthesis in reticulocytes from obligatory cases of the α-thal1 and α-thal2 traits. Twelve parents of babies with hemoglobin Bart's hydrops fetalis (obligatory α-thal1 trait) had the mean total radioactivity α/β ratio of 0.76±SD 0.04, while that of 7 normal controls was 1.06±SD 0.04. The α/β globin chain ratios of 16 cases, who were either parents or offspring of patients with hemoglobin H disease, were found to segregate into 2 groups, i.e. 0.78±SD 0.03 (10 cases) and 0.92±SD 0.03 (6 cases), probably representing the α-thal1 and α-thal2 traits respectively. The hematological data of the first group showed definite hypochromic microcytic red cells, similar to thoseof the parents of the hydrops. The second group had significantly higher mean corpuscular hemoglobin than the first group, compatible with α-thal2 trait. Our globin chain synthesis study thus appears to be capable of discriminating normal, α-thal1 and α-thal2 traits.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00430348
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