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Iranian Journal of Public Health، جلد ۵۲، شماره ۸، صفحات ۱۷۳۰-۱۷۳۸
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عنوان انگلیسی Genetic Characterization of the H Gene of MeV Strains (H1, B3, and D4) Recently Circulated in Iran for Improving the Molecular Measles Surveillance in the National Measles Lab
چکیده انگلیسی مقاله Background: Despite decreasing the global burden of measles disease after the introduction of vaccination, measles remains one of the most devastating childhood diseases. Since genotype B3 is reported as a predominant Measles Virus (MeV) genotype recently, the current study aimed to better understand MeV genetic variation by analyzing the complete sequence of Hemagglutinin (H) gene associated with outbreaks of circulated genotypes in Iran. Methods: Nine positive measles specimens were selected from three circulated different genotypes H1, B3, and D4. Two different regions of MeV RNA were detected by RT-PCR assay. Sequence data and phylogenetic trees were analyzed and constructed by MEGA X software program. Moreover, missense and silent mutations in critical positions of the MeV-H protein were investigated. Results: The result of phylogenetic analysis from the C-terminus of the Nucleoprotein gene (NP-450) and the complete H gene revealed that the mean sequence diversity was 0.06%-0.08% and 0.04%, respectively. Genotype H1 had the highest mutation in this study; however, the substitutions in genotype B3 fundamentally occurred in critical epitopes. Moreover, genotype D4 was more stable than genotypes B3 and H1. Conclusion: Mutations were investigated in the whole sequence of H protein. Moreover, the mutations that occur in the critical sites of the protein have an important effect on the pathogenicity of the virus. In this way, we were able to illustrate why genotype B3 is more transmissible than other measles genotypes and is the most important circulating genotype around the world.
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نویسندگان مقاله | Raziyeh Zareh-Khoshchehreh
1. Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran 2. Department of Virology, School of Medical Sciences, Tarbiat Modares University, Tehran, Iran


| Vahid Salimi
1. Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran 2. National Reference Laboratory for Measles and Rubella, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran


| Ghazal Sadat Fatemi Nasab
1. Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran 2. National Reference Laboratory for Measles and Rubella, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran


| Maryam Naseri
Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran


| Fatemeh Adjami Nezhad Fard
1. Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran 2. National Reference Laboratory for Measles and Rubella, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran


| Talat Mokhtari Azad
1. Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran 2. National Reference Laboratory for Measles and Rubella, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
نشانی اینترنتی https://ijph.tums.ac.ir/index.php/ijph/article/view/21197
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