Screening for co-existence of α-thalassemia in β-thalassemia and in HbE heterozygotes via an enzyme-linked immunosorbent assay for Hb Bart's and embryonic ζ-globin chain

We sought to demonstrate the ability of levels of Hb Bart's and ζ-globin chain quantified by enzymelinked immunosorbent assay (ELISA) in detecting α-thalassemia in β-thalassemia and HbE heterozygotes. We developed an in-house sandwich ELISA method using monoclonal antibodies (mAbs) to Hb Bart&#...

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Bibliographic Details
Main Authors: Thanusak Tatu, Surakit Khuntarak, Surasit Suwannasin, Tiemjan Kiewkarnkha, Sakdinan Khamrin, Watchara Kasinrerk
Format: Journal
Published: 2018
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Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84862899879&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/51919
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Institution: Chiang Mai University
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Summary:We sought to demonstrate the ability of levels of Hb Bart's and ζ-globin chain quantified by enzymelinked immunosorbent assay (ELISA) in detecting α-thalassemia in β-thalassemia and HbE heterozygotes. We developed an in-house sandwich ELISA method using monoclonal antibodies (mAbs) to Hb Bart's and ζ-globin chain, and quantified levels of Hb Bart's and ζ-globin chain in 172 and 223 anonymous blood samples of β-thalassemia and HbE heterozygotes, respectively. Genotypes of athalassemia 1, β-thalassemia were identified, and HbE allele was confirmed using a newly developed multiplex allele-specific PCR. The in-house sandwich ELISA method detected Hb Bart's in 6.4% of β-thalassemia heterozygotes, of which 5.2% showed detectable amounts of the ζ-globin chain. 15.2% of individuals heterozygous for HbE showed a detectable amount of Hb Bart's, and the ζ-globin chain was detected in 11.2% of this cohort. All samples having detectable amounts of Hb Bart's and the ζ-globin chain were verified to be SEA-type α-thalassemia 1. ELISAquantified Hb Bart's and ζ-globin chain levels can be used to detect double heterozygosity of α- and β-thalassemia and of α-thalassemia and HbE. This strategy may be useful in screening for co-existence of α-thalassemia in β-thalassemia and in HbE heterozygotes, particularly in countries where a-, β-thalassemia and HbE are endemic. © 2012 The Japanese Society of Hematology.