[C825T polymorphism of G protein beta3 subunit gene and Uygur Hilit type of essential hypertension: a correlation study].

OBJECTIVE: To explore the association between C825T polymorphism of G protein beta3 subunit (GNB3) gene and different Hilit types of essential hypertension (EH) in the Uygur nationality of Xinjiang. METHODS: According to Uygur medical theories, EH patients (as the EH group) and non-EH patients (as the control group) were assigned to four Hilit groups. The C825T polymorphism of GNB3 was detected in 161 EH patients and 379 non-EH subjects of different Hilit types by using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) to explore the difference of the genotypes and allelic frequencies and hypertension. RESULTS: (1) In Xinjiang Uygur population, the distribution frequencies of GNB3 C825T polymorphism were in accordance with Hardy-Weinberg (chi2 = 0.871, P = 0.647). (2) There was no statistical difference in the distribution frequencies of three genotypes and two alleles of GNB3 between the EH group and the control group (P > 0.05). (3) There was statistical difference in distribution frequencies of three genotypes between the abnormal Sapra and non-abnormal Sapra group (the sum of abnormal Sewda, abnormal Kan, and abnormal Balhem) (chi2 = 6.905, P = 0.032), especially between the abnormal Sapra and abnormal Balhem groups (chi2 = 10.404, P = 0.006), but there was no statistical difference in distribution frequencies of alleles between the two groups (P > 0.05). (4) In 161 EH patients, there was statistical difference in the distribution frequencies of three genotypes and two alleles between the abnormal Sapra and non-abnormal Sapra group (chi2 = 9.034, P = 0.011; chi2 = 4.701, P = 0.03). CONCLUSIONS: Both TT genotype and T allele of GNB3 C825T polymorphism might not be associated with EH patients in Xinjiang Uygur populations. However, they were correlated with hypertension patients of non-abnormal Sapra, indicating the pathogeneses of EH with different Hilit types might be different.

[Genotyping of hepatitis A virus prevalent strains in Xinjiang Hetian of China in 2006].

OBJECTIVE: To analysis the genotypes of wild type hepatitis A virus circulated in Xinjiang Hetian of China in 2006. METHODS: The Vp1-2A region of HAV genome was amplified and sequenced from serum samples collected in Xinjiang Hetian of China in 2006, and subjected to phylogenetic analysis by Neighbor Joining (NJ) method. RESULTS: The nucleotide sequence differences in the VP1-2A region among Xinjiang Hetian HAV strains ranged from 0%-3.9%, all belonged to sub-genotype 1A. Genetically similar strains were identified among Xinjiang Hetian 2006 and Xinjiang Yili 2005 of China isolates. Only 0-2 amino acid differences were found among the Xinjiang Hetian HAV isolates in the VP1-2A region. CONCLUSION: There were different HAV strains existing in the investigated areas, these strains may have different transmission pathways for the spread of the disease. The results indicate the usefulness of molecular epidemiological methods in studying changes in the circulating HAV strains and in tracing transmission routes, and also for effectively control measures to prevent the spread of the disease.