Correlation Between Quantitative Anti-dsDNA Levels with Severity of Proteinuria in Systemic Lupus Erythematosus Patients
Reumatología Clínica (English Edition), ISSN: 2173-5743, Vol: 18, Issue: 8, Page: 464-468
2022
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- 5Captures
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Article Description
To evaluate the correlation of quantitative anti-dsDNA level with proteinuria levels in patients with lupus nephritis in a tertiary care hospital. In this prospective cross-sectional study, 76 patients of newly diagnosed SLE coming to Fatima Memorial Hospital were included in the study period between January 2020 to June 2020. Demographic data such as age, gender, lupus manifestations such as serositis, arthritis, mucocutaneous disease, and neuropsychiatric manifestations were recorded. Quantitative anti-dsDNA was measured by enzyme-linked immunosorbent assay and proteinuria was estimated by 24 h urinary protein collection. Data was analyzed by SPSS 23. Association between categorical variables was assessed using chi-square test. For comparison of categorical independent and continuous dependent variable t -test or Mann–Whitney U test was applied. The median age of the cohort was 29 (with inter quartile range – IQR – of 13) years. The female gender comprised of 68 (89.4%) of the cohort population. The median anti-dsDNA level was 54.9 (183.6 IQR) IU, and baseline proteinuria of the cohort was 520 mg/dL (1.49 IQR). There was a significant association of anti-dsDNA level with systemic features such as arthritis ( p = <0.01), serositis ( p = <0.01) and, Raynaud's phenomenon ( p = <0.01). NPSLE and mucocutaneous features did not show statistically significant association ( p = 0.91 and 0.14 respectively). Baseline anti-dsDNA showed a statistically significant correlation with baseline proteinuria levels ( p = <0.01). Quantitative anti-dsDNA is directly correlated with nephritis measured as proteinuria, and can be detected even before organ involvement. Hence, it can determine disease course and guide early treatment. Evaluar la correlación del nivel cuantitativo de anti-dsDNA con los niveles de proteinuria en pacientes con nefritis lúpica en un hospital de tercer nivel. En este estudio transversal prospectivo se incluyeron 76 pacientes de LES recién diagnosticados que acudieron al Fatima Memorial Hospital en el período de estudio entre enero de 2020 y junio de 2020. Se registraron datos demográficos como edad, sexo, manifestaciones de lupus como serositis, artritis, enfermedad mucocutánea y manifestaciones neuropsiquiátricas. El anti-dsDNA cuantitativo se midió mediante un ensayo inmunoabsorbente ligado a enzimas y la proteinuria se estimó mediante la recogida de proteínas en orina de 24 horas. Los datos fueron analizados por SPSS 23. La asociación entre variables categóricas se evaluó mediante la prueba de χ 2. Para la comparación de variable dependiente continua e independiente categórica se aplicó la prueba t o la prueba u de Mann Whitney. La mediana de edad de la cohorte fue de 29 años (con rango intercuartil – IQR – de 13). El género femenino comprendía 68 (89,4%) de la población de la cohorte. El nivel medio de anti-dsDNA fue 54,9 (183,6 IQR) UI, y la proteinuria basal de la cohorte fue de 520 mg/dL (1,49 IQR). Hubo una asociación significativa del nivel de anti-dsDNA con características sistémicas como artritis (p = <0,01), serositis (p = <0,01) y fenómeno de Raynaud (p = <0,01). El NPSLE y características mucocutáneas no mostraron asociación estadísticamente significativa (p = 0,91 y 0,14, respectivamente). El anti-dsDNA basal mostró una correlación estadísticamente significativa con los niveles basales de proteinuria (p = <0,01). El anti-dsDNA cuantitativo se correlaciona directamente con la nefritis medida como proteinuria y puede detectarse incluso antes de la afectación de órganos; por lo tanto, puede determinar el curso de la enfermedad y orientar el tratamiento temprano.
Bibliographic Details
Elsevier BV
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