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논문 기본 정보

자료유형
학술저널
저자정보
Jasmita Dass (Sir Ganga Ram Hospital) Aastha Gupta (Sir Ganga Ram Hospital) Suchi Mittal (Sir Ganga Ram Hospital) Amrita Saraf (Sir Ganga Ram Hospital) Sabina Langer (Sir Ganga Ram Hospital) Manorama Bhargava (Sir Ganga Ram Hospital)
저널정보
대한혈액학회 Blood Research Blood Research Vol.52 No.2
발행연도
2017.1
수록면
130 - 134 (5page)

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Background: Cation exchange-high performance liquid chromatography (CE-HPLC) is most com-monly used to evaluate hemoglobin (Hb) variants, which elute in the Hb A2 window. This study aimed to assess prevalence of an uncommon Hb variant, Hb D-Iran, and compare its red cell parameters and peak characteristics with those of Hb E that commonly elutes in the Hb A2 window. Methods: Generally, we assess abnormal Hb using CE-HPLC as the primary technique along with alkaline and acid electrophoresis. All cases with Hb A2 window >9%, as assessed by CE-HPLCs during 2009‒2013, were selected. Results: Twenty-nine cases with Hb D-Iran variant were identified—25 heterozygous, 2 homo-zygous, 1 compound heterozygous Hb D-Iran/β-thalassemia, and 1 Hb D-Iran/Hb D-Punjab. Overall prevalence of Hb D-Iran was 0.23%. Compared to patients with Hb E, those with Hb D-Iran had significantly higher Hb (12.1 vs. 11.3 g/dL, P=0.03), MCV (82.4 vs. 76.4 fL, P=0.0044), MCH (27.9 vs. 25.45 pg, P=0.0006), and MCHC (33.9 vs. 33.3 g/dL, P=0.0005). Amount of abnormal Hb (40.7 vs. 26.4%, P=0.0001) was sig-nificantly higher while retention time (3.56 vs. 3.70 min, P=0.0001) was significantly lower in Hb D-Iran than in Hb E. Conclusion: Hb D-Iran peak can be easily missed if area and retention time of the Hb A2 window are not carefully analyzed. To distinguish between variants, careful analysis of peak area and retention time is sufficient in most cases and may be further confirmed by the second technique—alkaline electrophoresis.

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