[Molecular characterization of glucose-6-phosphate dehydrogenase variants in four ethnic groups in Yunnan province of China].

OBJECTIVE

In order to understand the molecular evolution, race origin and the relationship between the G6PD gene structure and clinical symptoms, the authors identified the molecular characterization of glucose-6-phosphate dehydrogenase and determined the G6PD gene frequency in four ethnic groups in Yunnan province of China.

METHODS

The point mutations of G6PD were detected by Mismatch-PCR/RE, SSCP,ARMS,DNA sequence and so on. G6PD gene frequency was determined by Hardy-Weinberg Law.

RESULTS

G6PD G1388A, G1376T,A95G mutations were determined in Bai and Dai people for the first time and G1388A also in Harni people by DNA sequence. G6PD C1024T were detected in Dai population by Mismatch-PCR/RE. The gene frequency of G6PD in Bai population in Dali city is 0.0113, and the incidence is 1.19% which are different from those in Dai population.

CONCLUSION

G6PD G1388A,G1376T, A95G and C1024T are the mutations in national minorities as well as in the Han people. The results suggest that different national minorities of China may have the same ancestor. The incidence of G6PD deficiency and the G6PD gene frequency in Bai population are different from those in Dai population. The distribution of G6PD deficiency in Yunnan is associated with the distribution of malaria epidemic in that province.