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Variations in globin synthesis in delta-beta-thalassaemia.

Abstract：

:Peripheral blood globin synthesis studies were done in 11 patients with delta beta-thalassaemia trait, Hb S-delta beta-thalassaemia or delta beta/betao-thalassaemia from two black and two Caucasian families. All patients had elevated Hb F and normal or decreased Hb A2 levels and 10 had family studies confirming the diagnosis. In addition, four unrelated non-thalassaemic patients with elevated Hb F levels also had peripheral blood globin synthesis studies. The beta/alpha specific activity globin synthesis ratios in the three blacks with delta beta-thalassaemia trait were 0.60--1.04. In the four Caucasians with delta beta-thalassaemia traint, the beta/alpha ratios were 0.58--1.02. These results demonstrate a wide range of ratios overlapping those of normal controls (0.99 +/- 0.06). The betas/alpha ratios in three blacks with Hb S-delta beta-thalassaemia ranged from 0.66 to 1.00, similar to those of patients with delta beta-thalassaemia trait. In the black patient with delta beta/betao-thalassaemia, the gamma/alpha ratio was 0.67. The beta/alpha peripheral blood ratios in the four non-thalassaemia patients with elevated Hb F ranged from 1.00 to 1.11, similar to those of normal controls. These studies indicate that a decreased beta/alpha ratio is not an invariable finding in delta beta-thalassaemia in blacks or Caucasian patients and that globin synthesis data alone is insufficient to diagnose definitively heterozygotes for delta beta-thalassaemia or to distinguish this trait from non-thalassaemic haematological disorders associated with a normal percentage of Hb A2 and an elevated level of Hb F.

journal_name

Br J Haematol

journal_title

British journal of haematology

authors

Kinney TR,Friedman S,Cifuentes E,Kim HC,Schwartz E

doi

10.1111/j.1365-2141.1978.tb07103.x

subject

Has Abstract

pub_date

1978-01-01 00:00:00

pages

15-22

issue

1

eissn

0007-1048

issn

1365-2141

journal_volume

38

pub_type

杂志文章

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