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  • Title: Prevalence of hemoglobin E, alpha-thalassemia and glucose-6-phosphate dehydrogenase deficiency in 1,000 cord bloods studied in Bangkok.
    Author: Tanphaichitr VS, Mahasandana C, Suvatte V, Yodthong S, Pung-amritt P, Seeloem J.
    Journal: Southeast Asian J Trop Med Public Health; 1995; 26 Suppl 1():271-4. PubMed ID: 8629122.
    Abstract:
    Thalassemia hemoglobinopathies and glucose-6-phosphate dehydrogenase (G-6-PD) deficiency are prevalent in Thailand. We studied the prevalence of these disorders from 1,000 cord bloods collected during 14 months period, using EDTA as anticoagulant. Red blood cell G-6-PD quantitative assay was performed in all male subjects. Nine hundred and eighty five specimens were available for hemoglobin (Hb) typing by starch gel electrophoresis. Further evaluation by cellulose acetate electrophoresis and follow up were made in the cases who had Hb E and/or high level of Hb Bart's. It was found that out of 505 males, 61 cases (12.08%) had G-6-PD deficiency. Among 985 cases studied for Hb typing, 61.92% revealed normal Hb type AF while Hb E was present in 18.68% and Hb Bart's designated alpha-thalassemias were present in 25.18% respectively. Of these 985 cases, 18.78% had low Hb Bart's level ie detectable to 8.2% consistent with alpha-thal2, Hb Constant Spring (CS) or alpha-thal1 trait. Ten cases (1.02%) had high levels of Hb Bart's ranging from 16.1-35% without or with Hb CS and E, and further follow-up revealed homozygous Hb CS, Hb A-E-Bart's, Hb H and Hb H with Hb CS disease. The other 53 cases (5.38%) had low level of Hb Bart's with Hb E consistent with alpha-thalassemia trait with Hb E trait. There were 127 cases (12.89%) who had only Hb E trait and 3 cases (0.3%) who had Hb F and E without Hb A initially.
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