Suppression of polyclonal immunoglobulin production by a soluble factor produced by a human thymus hybridoma

1986 ◽  
Vol 11 (3) ◽  
pp. 141-154 ◽  
Author(s):  
Masato Murakami ◽  
Martha K. Cathcart
Viruses ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1381
Author(s):  
Milena Małecka-Giełdowska ◽  
Maria Fołta ◽  
Agnieszka Wiśniewska ◽  
Emilia Czyżewska ◽  
Olga Ciepiela

Distinguishing between severe and nonsevere COVID-19 to ensure adequate healthcare quality and efficiency is a challenge for the healthcare system. The aim of this study was to assess the usefulness of CBC parameters together with analysis of FLC serum concentration in risk stratification of COVID-19. Materials and methods: CBC was analyzed in 735 COVID ICU, COVID non-ICU, and non-COVID ICU cases. FLC concentration was analyzed in 133 of them. Results: COVID ICU had neutrophils and lymphocytes with the greatest size, granularity, and nucleic acid content. Significant differences in concentrations of κ and λ FLCs were shown between COVID ICU and COVID non-ICU. However, no difference was found in the κ/λ ratio between these groups, and the ratio stayed within the reference value, which indicates the presence of polyclonal FLCs. FLC κ measurement has significant power to distinguish between severe COVID-19 and nonsevere COVID-19 (AUC = 0.7669), with a sensitivity of 86.67% and specificity of 93.33%. The κ coefficients’ odds ratio of 3.0401 was estimated. Conclusion: It can be concluded that the results obtained from the measure of free light immunoglobulin concentration in serum are useful in distinguishing between severe and nonsevere COVID-19.


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