Abstract
Background
The renin-angiotensin system is potentially involved in the pathogen-host interaction in the disease caused by SARS-CoV-2, since the angiotensin-converting enzyme (ACE) 2 serves as a receptor for the virus. The impact of the pandemic in specific regions and ethnic groups highlights the importance of investigating genetic factors that disrupt the balance of the system in response to SARS-CoV-2 infection, especially in genes with ethnic frequency variations. Therefore, this study aimed to evaluate the influence of the ACE I/D polymorphism on the incidence and severity of COVID-19 in a sample of the Brazilian population.
Methods and results
70 severe cases and 355 mild cases patients were evaluated. DNA extraction was performed using a QIAamp DNA Blood Mini kit. Genotyping of ACE I/D polymorphism was performed. Clinical outcomes were obtained from the patients’ records. We found an association between the ACE I/D polymorphism and the incidence or severity of COVID-19 in male participants. Moreover, we observed a relationship between severity and increasing age and body weight and a higher frequency of II genotype individuals among those who had a cough as their symptoms in mild patients. No differences were observed in leukocyte count or other parameters related to the inflammatory response in severe patients.
Conclusions
Our data showed the influence of the ACE I/D polymorphism on severity of COVID-19 in males, as well as on the occurrence of cough in patients with mild symptoms, with a higher incidence in those carrying the I allele.
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Data availability
Data supporting all figures and tables are not publicly available to protect patient privacy. These data can be accessed on request from Dr. Marcelo Wajchenberg, upon the completion of a Data Usage Agreement, according to policies from the Hospital Israelita Albert Einstein Ethical committees.
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Acknowledgements
The authors would like to thank the students of Hospital Israelita Albert Einstein for their technical assistance and support.
Funding
This study was supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq #301732/2018-3) and Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP#2018/16565-0).
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Conceptualization, S.A. C.B., M.W.; methodology, S.A., M.G., C.B.; investigation, S.A., I.G., M.S., D.M.; resources, S.A., M.W.; data curation, S.A., I.G., M.S., V.S., D.M., M.W.; writing—original draft preparation, S.A., M.G., writing—review and editing, S.A., M.G., V.S., M.W.; project administration, S.A.; funding acquisition, S.A and M.W.; All authors have read and agreed to the published version of the manuscript.
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The study was carried out in accordance with the principles of the Declaration of Helsinki and was approved by the ethical committee of the Sociedade Beneficente Israelita Brasileira Hospital Albert Einstein (CAAE: 32855020.3.0000.0071), São Paulo. Written informed consent was obtained from all subjects and/or their parents.
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Almeida, S.S., Gregnani, M.F., da Costa, I.M.G. et al. ACE I/D polymorphism is a risk factor for the clinical severity of COVID-19 in Brazilian male patients. Mol Biol Rep 51, 180 (2024). https://doi.org/10.1007/s11033-023-09189-4
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DOI: https://doi.org/10.1007/s11033-023-09189-4