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1.
J Inflamm Res ; 14: 3123-3128, 2021.
Article in English | MEDLINE | ID: covidwho-1315920

ABSTRACT

OBJECTIVE: Patients with rheumatic immune diseases were more likely to develop severe or critical COVID-19. We aimed to determine whether rheumatoid factor antibodies were present in COVID patients and the level and type of rheumatoid factor antibodies produced in COVID-19 patients were related to the degree of the patient's condition. The study also aimed to determine the prevalence and characteristics of rheumatoid factor antibodies in patients with COVID-19. METHODS: Sera collected from 129 patients with COVID-19 were tested for rheumatoid factor antibodies by ELISA. Five patients were tracked for several months to monitor dynamic changes of these antibodies. RESULTS: Rheumatoid-associated autoantibodies were detected in 20.16% of patients (26/129) following infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). In addition, IgM-RF was primarily present in critically ill patients, while IgA-RF was mainly present in mild patients. Five patients were able to track for several months to monitor dynamic changes of these antibodies. Rheumatoid factor antibodies peaks in the later phase of the disease and last for longer time. Anti-Jo-1 antibody was found in one of the five patients. CONCLUSION: This was the case series report that rheumatoid-associated autoantibodies are present in patients with COVID-19. The clinical significance of these antibodies was not fully understood and needed further characterization. These autoantibodies are related to the severity of the patient's disease and exist for a long time in the patient's body, while their impact on the patient's health is unknown.

2.
J Med Virol ; 93(4): 2365-2373, 2021 04.
Article in English | MEDLINE | ID: covidwho-1217386

ABSTRACT

Coronavirus disease 2019 (COVID-19) is a newly emerging infectious disease. Our understanding of the clinical characteristics of liver damage and the relationship with disease severity in COVID-19 is still limited. To investigate the serum hepatic enzyme activities in different phenotypes of COVID-19 patients, evaluate their relationship with the illness severity and analyze the correlation of glycyrrhizin treatment and abnormal liver enzyme activities, one hundred and forty-seven patients with COVID-19 were enrolled in a retrospective study that investigated hepatic dysfunction. Liver alanine aminotransferase (ALT), aspartate aminotransferase (AST), lactic dehydrogenase (LDH), Y-glutamyl transferase (GGT), superoxide dismutase (SOD), and alkaline phosphatase (ALP) were analyzed in these patients. Patients with diammonium glycyrrhizinate (DG) treatment were further investigated. Of the 147 patients, 56 (38.1%) had abnormal ALT activity and 80 (54.4%) had abnormal AST activity. The peak of abnormal hepatic enzyme activities occurred at 3 to 6 days after on admission. Serum AST and LDH levels were elevated, while the SOD level was decreased in severe and critical patients, compared with mild cases. DG treatment may alleviate the abnormal liver enzyme activities in non-critical COVID-19 patients. Abnormal liver functions may be observed in patients with COVID-19, and were associated with SARS-CoV-2-induced acute liver damage. Glycyrrhizin treatment may be an effective therapeutic approach for the outcome of abnormal hepatic enzyme activities in severe COVID-19 cases. Serum hepatic enzyme tests may reflect the illness severity and should be monitored.


Subject(s)
COVID-19/enzymology , Liver/enzymology , Adult , Aged , Aged, 80 and over , Alanine Transaminase/blood , Alkaline Phosphatase/blood , Aspartate Aminotransferases/blood , COVID-19/blood , COVID-19/metabolism , Female , Humans , Liver/metabolism , Liver Function Tests , Male , Middle Aged , Phenotype , Retrospective Studies , SARS-CoV-2 , Severity of Illness Index , Superoxide Dismutase/blood , Young Adult
3.
Clin Chim Acta ; 517: 48-53, 2021 Jun.
Article in English | MEDLINE | ID: covidwho-1101132

ABSTRACT

OBJECTIVE: Coronavirus Disease 2019 (COVID-19) caused by a novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is still spreading worldwide, which may progress to pulmonary fibrosis (PF), leading to the worsen outcome. As the markers of lung injury, the correlation of Krebs von den Lungen-6 (KL-6) and fibronectin (Fn) with pulmonary fibrosis in COVID-19 was still unclear. METHODS: 113 patients diagnosed as COVID-19 were enrolled in this retrospective study, and divided into three categories as mild, moderate and severe cases. The concentrations of serum KL-6 and Fn at hospital admission were tested using the method of latex agglutination assay and immunoturbidimetic assay, respectively. RESULTS: Compared with that in the non-severe COVID-19 cases and normal control subjects, serum KL-6 concentration on admission was significantly higher in the severe group, which was positively correlated with C-reactive protein, and negatively correlated with lymphocytes count. Whereas, no obvious elevation in serum Fn concentration was investigated in COVID-19 patients with the different phenotypes. The severe cases displayed the higher incident rate of pulmonary fibrosis at hospital discharge. Compared with non-PF patients, the COVID-19 cases with PF had the higher serum KL-6 values. CONCLUSION: Serum KL-6 concentration was significantly elevated in severe COVID-19 patients, which may be useful for evaluating the disease severity. For early prevention of the development of pulmonary fibrosis, high concentrations of serum KL-6 in the early stage of COVID-19 should be paid close attention.


Subject(s)
COVID-19 , Fibronectins/blood , Mucin-1/blood , Pulmonary Fibrosis , Adolescent , Adult , Aged , Aged, 80 and over , Biomarkers , COVID-19/diagnosis , Female , Humans , Male , Middle Aged , Pulmonary Fibrosis/blood , Pulmonary Fibrosis/diagnosis , Retrospective Studies , Young Adult
4.
Med. J. Wuhan Univ. ; 4(41): 517-520, 20200715.
Article in Chinese | WHO COVID, ELSEVIER | ID: covidwho-617504

ABSTRACT

Objective: To compare the chemiluminescence and colloidal gold method in the detection of 2019 novel Coronavirus (2019-nCoV, or SARS-CoV-2) specific antibody and to evaluate the importance in the diagnosis and treatment of COVID-19. Methods: A total of 191 cases of diagnosed and suspected COVID-19 patients admitted in Febrary 2020 in Wuhan Leishenshan Hospital were included. The patients were divided into 2019-nCoV continuous positive group, 2019-nCoV positive to negative group, and 2019-nCoV suspect group according to the results of pharyngeal swab 2019-nCoV nucleic acid detection. In addition, 27 patients without COVID-19 were set as control group to test the specificity. The serum samples were collected, and colloidal gold and chemiluminescence method were used to detect total antibodies (IgM+IgG) and IgM. SPSS 24.0 was used to compare the difference in antibody detection rates between the two methods. Results: The specificity of total antibodies (IgM+IgG) and IgM detection was 100%. Two methods of total antibody detection had no significant difference in continuous positive group (P=1.00). In positive to negative group and suspect group, the positive detection rate of chemiluminescence method was significantly higher than colloidal gold method (95.2% vs 76.2% and 94.9% vs 70.5%, respectively, both P<0.05). The chemiluminescence method showed no significant difference between the three groups in IgM detection (P>0.05). Conclusion: The detection of 2019-nCoV specific antibody can be an important supplemental method to pharyngeal swab 2019-nCoV nucleic acid detection during the diagnosis and treatment of COVID-19. The chemiluminescence method is better than colloidal gold method in the detection of total antibody. The IgM detection using chemiluminescence method is suitable for all stages of the disease.

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