Aim: COVID-19 pandemic continues and dearth of information remains considering the utility of various inflammatory biomarkers. We carried out the present study to delineate the roles of these biomarkers in various strata of patients with coronavirus infection. Materials & methods: A retrospective study was carried out after obtaining approval from the relevant Ethics Committee. Patients established with COVID-19 infection as shown by positive real-time quantitative PCR test were included. Details on their demographics, diagnosis, whether they received tocilizumab, and the values of the following biomarkers were obtained: IL-6, C-reactive protein (CRP), serum ferritin, D-dimer, procalcitonin, fibrinogen, lactate dehydrogenase and creatinine kinase. Receiver operating characteristic curves were plotted and correlation of biomarkers with IL-6 were estimated. Results: One-hundred and three patients were recruited. We observed that serum ferritin followed by D-dimer had better predictive accuracy in identifying patients with pneumonia compared with asymptomatic; and CRP in addition to the earlier markers had better accuracy for predicting severe illness compared with mild–moderate. Serum IL-6 levels were significantly higher in patients with severe illness admitted in intensive care unit. Significantly, higher levels of IL-6 and serum ferritin were observed in patients receiving tocilizumab. A trend of increased IL-6 levels was observed immediately following the initiation of tocilizumab therapy followed by a drop thereafter. Conclusion: We observed serum ferritin, D-dimer and CRP to accurately predict patients developing severe COVID-19 infections as well as those at risk of developing COVID pneumonia. A trend in IL-6 levels was observed in patients on tocilizumab therapy.
【저자키워드】 coronavirus, IL-6, CRP, D-dimer, ferritin, procalcitonin, 【초록키워드】 Coronavirus infection, Biomarker, Biomarkers, intensive care, Tocilizumab, Pneumonia, IL-6, COVID-19 pandemic, Infection, intensive care unit, Diagnosis, C-reactive protein, risk, D-dimer, procalcitonin, lactate dehydrogenase, Retrospective study, Accuracy, COVID-19 infection, Patient, fibrinogen, COVID pneumonia, correlation, utility, information, quantitative PCR, predict, inflammatory biomarkers, marker, Lactate, creatinine, demographics, followed by, Predictive, receiver operating characteristic, Severe COVID-19 Infection, Serum ferritin, creatinine kinase, COVID-19 infections, ethics committee, approval, drop, tocilizumab therapy, material, severe COVID-19 infections, positive, serum IL-6 level, shown, carried, recruited, addition, receiving, significantly higher, IL-6 level, patients with pneumonia, with COVID-19, 【제목키워드】 Inflammatory biomarker, Bahrain, patients with COVID-19,