COVID-19 forced us to investigate risk factors to provide the best medical attention, especially in vulnerable groups, such as pregnant patients. Studies in other populations have analyzed blood groups in relation to infection, complications, and death. The present study aimed to analyze the association of blood groups with the risk of infection and complications in pregnant women and newborns from the Mexican-Mestizo population. We studied 1906 individuals. Quantitative variables were analyzed through the Student’s t-test. Categorical variables were analyzed through Pearson’s chi-square test, and logistic regression was used to analyze the association between categorical variables and outcomes. No significant association was observed between blood groups and infection risk. Individuals with the AB blood type are at higher risk for developing severe disease, although blood groups do not seem to be involved in the risk of SARS-CoV-2 infection. However, the AB blood group could be considered a risk factor for developing severe COVID-19 in the Mexican population.
Zika virus (ZIKV) infections have been associated with severe clinical outcomes, including neurological manifestations, especially in newborns with intrauterine infection. However, no licensed vaccines or specific antiviral agents are available yet. Therefore, safe and low-cost therapy is required, especially for pregnant women. In this sense, metformin, an FDA-approved drug used to treat gestational diabetes, has previously exhibited an effect anti-ZIKA in vitro in HUVEC cells by activating AMPK. In this study, we evaluated metformin treatment during in vitro ZIKV infection in a permissive trophoblast cell line JEG3. Our results demonstrate that metformin impacts viral replication and protein synthesis and reverts the cytoskeletal changes promoted by ZIKV infection. Beyond this, lipid droplet formation is reduced, which is associated with the lipogenic activation of infection. Taken together, our findings indicate that metformin has potential as an antiviral agent against in vitro ZIKV infection in trophoblastic cells.
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