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Alpha thalassaemia in Papua New Guinea
Lancet (London, England)
|February 25, 1984
Summary
High prevalence of Hemoglobin Bart's and alpha thalassaemia was found in Papua New Guinea infants. This suggests a link between altitude, malaria resistance, and alpha thalassaemia in certain populations.
Area of Science:
- Genetics
- Hematology
- Anthropology
Background:
- Alpha thalassaemia is a common inherited blood disorder.
- Haemoglobin Bart's is a marker for alpha thalassaemia.
- Previous studies have indicated varying prevalence of alpha thalassaemia in Papua New Guinea.
Purpose of the Study:
- To investigate the prevalence of Haemoglobin Bart's in newborns in Madang, Papua New Guinea.
- To analyze alpha globin gene variations in populations from Madang and Goroka.
- To explore potential correlations between alpha thalassaemia, geography, linguistics, and altitude.
Main Methods:
- Cord blood screening for Haemoglobin Bart's.
- Alpha globin gene analysis using genetic sequencing.
- Geographical and linguistic data collection and analysis.
Main Results:
- Haemoglobin Bart's detected in 81% of infants in Madang.
- Most individuals in Madang were heterozygous or homozygous for alpha+ thalassaemia.
- No Haemoglobin Bart's or alpha thalassaemia detected in infants from Goroka.
Conclusions:
- Alpha thalassaemia is highly prevalent in coastal Papua New Guinea.
- Prevalence may be linked to altitude and malaria resistance, not linguistic groups.
- Further research is needed to confirm the role of altitude and malaria.