Epigenetic Changes Linked to Loss of Smell in COVID-19
Author Information
Author(s): Aslan Elif Sibel, White Kenneth, Meral Gulsen, Akcay Zeyneb Nur, Altundag Aytug, Gur Savas, Dokur Mehmet, Baktir Mehmet Akif, Karcioglu Batur Lutfiye
Primary Institution: Biruni University
Hypothesis
This study investigates the role of DNA methylation in the UGT1A1 gene associated with olfactory dysfunction in COVID-19 patients.
Conclusion
The study found that lower DNA methylation levels in the UGT1A1 gene are associated with persistent anosmia in COVID-19 patients.
Supporting Evidence
- 35-50% of COVID-19 patients experience some degree of smell loss.
- Significantly lower levels of DNA methylation were found in anosmic patients compared to normosmic patients.
- The study suggests that methylation status at the UGT1A1 locus could serve as a biomarker for olfactory dysfunction.
- Further investigations with larger cohorts are needed to confirm these findings.
Takeaway
People who lost their sense of smell after COVID-19 have different DNA markers compared to those who didn't, which might help doctors understand and treat this problem better.
Methodology
The study analyzed DNA methylation patterns in blood samples from two matched cohorts of COVID-19 patients with normal smell and those with anosmia.
Limitations
The study is limited by the small cohort size and lack of information on SARS-CoV-2 variants.
Participant Demographics
Cohorts were matched for age and sex, with 20 patients in each group.
Statistical Information
P-Value
< 0.0001
Statistical Significance
p < 0.0001
Digital Object Identifier (DOI)
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