A study of Polymorphism of Vitamin D Receptor and miR-378 on Vaccination non-responding in Pregnant Women suffering from Chronic Hepatitis B Infection

Hepatitis B is a common infectious disease leading to hepatic cirrhosis and hepatocellular carcinoma. Studies have shown that serum levels of vitamin D and mir378 have a reverse relationship with the hepatitis B. The present study was conducted to determine the relationship between vitamin D and miR-378 receptor polymorphism on vaccination non- response in pregnant women suffering from chronic hepatitis B. This study examined 150 subjects including subjects with vaccination history and without hepatitis B, and subjects with vaccination history and with hepatitis. Genomic DNA was extracted using a salt saturation method. Then, RFLP- PCR method and SSCP- PCR techniques were used for miR378 to determine the mutations of Vitamin D. The mutant frequency and its rate were determined using SPSS software. The mutant alleles' rate was determined by analysis of variance. Results showed that there were no significant differences in mutant alleles between case and control groups in rs1544410 region (P=0.119) and allele C can be considered as a biomarker for hepatitis B. There was significant difference between case and control groups regarding rs1076064 allele and genotypic frequency (P=0.0037). It can be stated that rs1544410 polymorphism (P=0.0037) could not have a significant role in hepatitis B. In other words, A/G frequency had a significant role in hepatitis B and only allele C could be considered as a biomarker for hepatitis B risk.