Hemoglobin Q-Thailand related disorders: Origin, molecular, hematological and diagnostic aspects

被引：36
作者：
Singsanan, Sanita [1 ,2 ]
Karnpean, Rossarin [1 ,2 ]
Fucharoen, Goonnapa [1 ]
Sanchaisuriya, Kanokwan [1 ]
Sae-ung, Nattaya [1 ]
Fucharoen, Supan [1 ]
机构：
[1] Khon Kaen Univ, Fac Associated Med Sci, Ctr Res & Dev Med Diagnost Lab, Khon Kaen 40002, Thailand
[2] Khon Kaen Univ, Fac Associated Med Sci, Grad Sch, Khon Kaen 40002, Thailand
来源：
BLOOD CELLS MOLECULES AND DISEASES | 2010年 / 45卷 / 03期
关键词：
Hemoglobin Q-Thailand; Hemoglobin QE; Hb Q-H disease; Thalassemia syndrome; Globin gene haplotype; HB-Q-THAILAND; BETA-THALASSEMIA; NORTHEAST THAILAND; PRENATAL-DIAGNOSIS; DISEASE; ASSOCIATION; GENE; ALPHA(0)-THALASSEMIA; PREGNANCY; FEATURES;
D O I：
10.1016/j.bcmd.2010.06.001
中图分类号：
R5 [内科学];
学科分类号：
1002 ; 100201 ;
摘要：
We describe the molecular and hematological profiles of thalassemia syndromes caused by interactions of hemoglobin (Hb) Q-Thailand [alpha 74(EF3) Asp-His] and various hemoglobinopathies found in 52 unrelated adult Thai subjects. Ten genotypes including several previously undescribed conditions were observed, which were classified into 4 groups. Group I included 26 Hb Q-Thailand heterozygotes and a homozygotous subject. Group II included subjects with Hb Q-Thailand and other alpha-thalassemia alleles in trans including 1 compound Hb Q-Thailand/alpha(+)-thalassemia (-alpha(3.7)), 2 Hb Q-Thailand/Hb Constant Spring disease and 6 Hb H/Q-Thailand disease. The average levels of Hb Q-Thailand were found to be 29.8%, 82.3%, 34.7%, 49.2-49.3% and 79.4%, respectively. Both Hbs Bart's and H were observed in addition to Hb Q-Thailand in all 6 cases with Hb Q-H disease but not in a homozygous Hb Q-Thailand. Group III included 7 double heterozygotes for Hb Q-Thailand/Hb E, 3 Hb Q-Thailand/Hb E/alpha(+)-thalassemia (-alpha(3.7)), 3 heterozygous Hb Q-Thailand/homozygous Hb E and 1 triple heterozygote for Hb Q-Thailand/Hb Constant Spring/Hb E. In this group, Hbs E (alpha(A)(2)beta(E)(2)), Q-Thailand (alpha(QT)(2)beta(A)(2)) and QE (alpha(QT)(2)beta(E)(2)) were observed on both HPLC and capillary electrophoresis. The Hb QE, rather than Hb Q-Thailand, was detected in all 3 cases with heterozygous Hb Q-Thailand and homozygous Hb E. The remaining two cases in group 4 were double heterozygotes for Hb Q-Thailand and beta(0)-thalassemia in which Hb Q-Thailand, elevated Hb A(2) (alpha(A)(2)delta(2)), and Hb QA(2) (alpha(QT)(2)delta(2)) were detected. DNA analysis identified the Hb Q-Thailand mutation (alpha 74: GAC-CAC) and the linked (-alpha(4.2)) in all cases. Analysis of alpha-globin gene haplotype provided the first evidence of a single origin of this Hb variant in Thai population. (C) 2010 Elsevier Inc. All rights reserved.
引用
收藏
页码：210 / 214
页数：5
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