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COVID-19 Survivor Patients Carrying the Rs35705950 Risk Allele in MUC5B Have Higher Plasma Levels of Mucin 5B

Salvador Garcia-Carmona,Ramces Falfan-Valencia, Abigail Veronica-Aguilar,Ivette Buendia-Roldan,Leslie Chavez-Galan,Rafael de Jesus Hernandez-Zenteno, Alfonso Martinez-Morales,Ingrid Fricke-Galindo, Jesus Alanis-Ponce, Daniela Valencia-Perez Rea, Ilse Adriana Gutierrez-Perez,Oscar Zaragoza-Garcia,Karol J. Nava-Quiroz,Angel Camarena,Mayra Mejia,Iris Paola Guzman-Guzman,Gloria Perez-Rubio

Current issues in molecular biology(2022)

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摘要
Background: Genetic susceptibility to infectious diseases is partly due to the variation in the human genome, and COVID-19 is not the exception. This study aimed to identify whether risk alleles of known genes linked with emphysema (SERPINA1) and pulmonary fibrosis (MUC5B) are associated with severe COVID-19, and whether plasma mucin 5B differs according to patients’ outcomes. Materials and methods: We included 1258 Mexican subjects diagnosed with COVID-19. We genotyped rs2892474 and rs17580 of the SERPINA1 gene and rs35705950 of MUC5B. Based on the rs35705950 genotypes, mucin 5B plasma protein levels were quantified. Results: Homozygous for the risk alleles of the three polymorphisms were found in less than 5% of the study population, but no statistically significant difference in the genotype or allele association analysis. At the protein level, non-survivors carrying one or two copies of the risk allele rs35705950 in MUC5B (GT + TT) had lower levels of mucin 5B compared to the survivors (0.0 vs. 0.17 ng/mL, p = 0.0013). Conclusion: The polymorphisms rs28929474 and rs17580 of SERPINA1 and rs35705950 of MUC5B are not associated with the risk of severe COVID-19 in the Mexican population. COVID-19 survivor patients bearing one or two copies of the rs35705950 risk allele have higher plasma levels of mucin 5B.
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关键词
MUC5B,COVID-19,rs35705950,A1AT,SERPINA1,mucin 5B
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