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Deprecated: Implicit conversion from float 265.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Virus+Res 2020 ; 289 (ä): 198171 Nephropedia Template TP
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IFN-gamma is an independent risk factor associated with mortality in patients with moderate and severe COVID-19 infection #MMPMID32979474
Gadotti AC; de Castro Deus M; Telles JP; Wind R; Goes M; Garcia Charello Ossoski R; de Padua AM; de Noronha L; Moreno-Amaral A; Baena CP; Tuon FF
Virus Res 2020[Nov]; 289 (ä): 198171 PMID32979474show ga
BACKGROUND: Innate and adaptive immune responses have been evaluated in infected patients with COVID-19. The severity of the disease has been supposed to be associated with some profile not reported with other bacterial and viral pneumonia. We proposed a study in patients with moderate to severe COVID-19 infection to evaluate the interleukin patterns and its role as prognosis factors. METHODS: A prospective cohort with moderate and severe cases of COVID-19 infection from June to July 2020. Blood samples from patients were collected regularly to evaluate IFN-gamma, TNF-alpha, IL-4, IL-6, and IL-10. Clinical, laboratory, radiological data, and outcomes were recorded. The outcome variable was in-hospital death, survival, mechanical ventilation, and admission at the intensive care unit. Data are presented in median and interquartile range [IQR]. RESULTS: We evaluated the Th1 and Th2 responses according to evolution, distinguishing possible predictive markers. The IFN-gamma median of 323 pg/mL [IQR 166-570] was found in patients who died and 208 pg/mL [IQR 155-392] in the survival group (p = 0.017). IFN-gamma was also higher in the early stages of the disease (394 pg/mL [IQR 229-575] against 162 pg/mL [IQR 117-259], p < 0.001). IL-4 that was increased in late-stage (182 pg/mL [IQR 162-199] against 131 pg/mL [IQR 124-152], p < 0.001) but not associated with mortality. Also, death was also related to male gender (relative risk = 1.5 [95 % confidence interval = 1.1-2.0]). CONCLUSION: Our results suggest that the activation of the host immune response between Th1 or Th2 in COVID-19 infection may be related to the final result between discharge or death. This implies an attempt to control cytokines, such as IFN-gamma, with combined therapies for clinical treatment.