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10.3389/fimmu.2021.656350

http://scihub22266oqcxt.onion/10.3389/fimmu.2021.656350
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suck abstract from ncbi


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pmid33868301      Front+Immunol 2021 ; 12 (ä): 656350
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  • Lung Neutrophilic Recruitment and IL-8/IL-17A Tissue Expression in COVID-19 #MMPMID33868301
  • Azevedo MLV; Zanchettin AC; Vaz de Paula CB; Motta Junior JDS; Malaquias MAS; Raboni SM; Neto PC; Zeni RC; Prokopenko A; Borges NH; Godoy TM; Benevides APK; de Souza DG; Baena CP; Machado-Souza C; de Noronha L
  • Front Immunol 2021[]; 12 (ä): 656350 PMID33868301show ga
  • The new SARS-CoV-2 virus differs from the pandemic Influenza A virus H1N1 subtype (H1N1pmd09) how it induces a pro-inflammatory response in infected patients. This study aims to evaluate the involvement of SNPs and tissue expression of IL-17A and the neutrophils recruitment in post-mortem lung samples from patients who died of severe forms of COVID-19 comparing to those who died by H1N1pdm09. Twenty lung samples from patients SARS-CoV-2 infected (COVID-19 group) and 10 lung samples from adults who died from a severe respiratory H1N1pdm09 infection (H1N1 group) were tested. The tissue expression of IL-8/IL-17A was identified by immunohistochemistry, and hematoxylin and eosin (H&E) stain slides were used for neutrophil scoring. DNA was extracted from paraffin blocks, and genotyping was done in real time-PCR for two IL17A target polymorphisms. Tissue expression increasing of IL-8/IL-17A and a higher number of neutrophils were identified in samples from the H1N1 group compared to the COVID-19 group. The distribution of genotype frequencies in the IL17A gene was not statistically significant between groups. However, the G allele (GG and GA) of rs3819025 was correlated with higher tissue expression of IL-17A in the COVID-19 group. SARS-CoV-2 virus evokes an exacerbated response of the host's immune system but differs from that observed in the H1N1pdm09 infection since the IL-8/IL-17A tissue expression, and lung neutrophilic recruitment may be decreased. In SNP rs3819025 (G/A), the G allele may be considered a risk allele in the patients who died for COVID-19.
  • |*COVID-19/genetics/immunology/pathology[MESH]
  • |*Interleukin-17/genetics/immunology[MESH]
  • |*Interleukin-8/genetics/immunology[MESH]
  • |*Polymorphism, Single Nucleotide[MESH]
  • |*SARS-CoV-2/genetics/immunology[MESH]
  • |Adult[MESH]
  • |Aged[MESH]
  • |Aged, 80 and over[MESH]
  • |Female[MESH]
  • |Gene Expression Regulation/*immunology[MESH]
  • |Humans[MESH]
  • |Influenza A Virus, H1N1 Subtype/genetics/immunology[MESH]
  • |Influenza, Human/genetics/immunology[MESH]
  • |Lung/*immunology/pathology/virology[MESH]
  • |Male[MESH]
  • |Middle Aged[MESH]


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