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1.
Journal of Pediatric Infectious Diseases ; 17(02):7, 2022.
Article in English | Web of Science | ID: covidwho-1740515

ABSTRACT

Objective Oxidative stress and antioxidants play an important role in infections' response. We aimed to investigate the potential association between oxidative stress and the pathogenesis of severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) infection. Methods We analyzed oxidant and antioxidant parameters from serum samples of children with novel corona virus disease 2019 (COVID-19) besides demographic and clinical data of children. Serum levels of the 8-hydroxy deoxyguanosine (8-OHdG), protein carbonyl (CO), malondialdehyde (MDA), total glutathione (GSH), superoxide dismutase (SOD), catalase (CT), and glutathione peroxidase (GPx) enzyme activities were evaluated and compared between groups. Discussion A total of 96 children were evaluated, including 32 patients with confirmed COVID-19 (group 1), 35 patients with symptomatic infections without COVID-19 (group 2), and 29 healthy patients as a control group (group 3). Group 1 included 7 (21.8%) asymptomatic, 22 (68.7%) mild, and 3 (9.5%) moderate patients according to the severity of the disease. In all groups, there were no significant differences in oxidative stress and antioxidant parameter levels (p > 0.05). Furthermore, no statistical difference was found when the parameters of patients with COVID-19 and healthy children were evaluated according to disease course. Conclusion Serum levels of oxidant and antioxidant parameters were similar in children infected with SARS-CoV-2 and other infectious agents. However, further studies, including children with severe to critical disease, are necessary to characterize the oxidative stress, antioxidants, cytokine responses in COVID-19, and elucidate the pathogenesis.

2.
Journal of Pediatric Infectious Diseases ; : 7, 2021.
Article in English | Web of Science | ID: covidwho-1532195

ABSTRACT

Objective The frequency of coinfections in pediatric Coronavirus disease 2019 (COVID-19) cases and their impact on the clinical course are not fully understood. We aimed to investigate the viral and bacterial respiratory pathogens in children admitted to the pediatric emergency department (PED), their clinical course, and the presence of coinfections during the early months of the COVID-19 pandemic. Methods Clinical, laboratory and radiological findings, viral and bacterial pathogens detected by multiplex polymerase chain reaction (PCR) tests in nasopharyngeal swabs, clinical course, and treatments of all children who were tested for severe acute respiratory coronavirus 2 (SARS-CoV-2) at the PED between March 16 and May 15, 2020, were recorded. SARS-CoV-2 PCR-positive and negative groups were compared. Results Out of 570 patients tested for SARS-CoV-2 during the study period, 43 were found positive (7.5%). Non-SARS-CoV-2 viral pathogens were more common in the SARS-CoV-2 PCR-negative group than the SARS-CoV-2 PCR-positive group (13.2%, n=68 versus 4.7%, n=2), but this result was not statistically significant. Leukocyte, neutrophil, lymphocyte, and platelet counts were lower in SARS-CoV-2 PCR-positive group. Bacterial panel positivity was significantly higher in the SARS-CoV-2 PCR-positive group compared with the SARS-CoV-2 PCR-negative group (52%, n=12 versus 28%, n=91;p<0.05). The presence of coinfection did not alter the course of therapy in SARS-CoV-2 PCR-positive cases. Conclusion While viral coinfections were rare, bacterial panel positivity was common in children with COVID-19, but this had not influenced management decisions. The limitations of the tests should be kept in mind while interpreting the results.

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