Evaluation of Interleukin – 12 and Interleukin – 23 Expressions in Patients with Active and Latent Tuberculosis Infection

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Firas Ali Mohammed Al-Taie, Jawad K. Al-Khafaji, Hadi Fadhil Alyasari


Tuberculosis (TB) diagnosis should be performed as early as possible and with accuracy in order to limit the global TB outbreak. Early studies have suggested a role for cytokine biomarkers in the diagnosis of tuberculosis, but more research and validation in other populations are needed before this method can be considered reliable.  Immunological tests that can differentiate between active tuberculosis (ATB) and latent tuberculosis infection (LTBI) have been identified (LTBI) are still in search of their own set of indicators. To better understand the immunological responses to tuberculosis infection, we conducted two retrospective cohort studies. Participants were divided into three groups: those with ATB, those with LTBI, and those who were not categorized. Our findings from our multiplex cytokine experiment led to the development of a Biomarkers for two distinct cytokines that allows for the most accurate diagnosis of the various TB infection states in humans. It was revealed that TB-antigen induced IFN- was associated with two cytokine biomarkers (n=70) through our investigation. The diagnostic performance of the biosignature was demonstrated higher median levels of IL-12 and IL-23 recorded by the TB group (884.44 pg/ml) and (2750 pg/ml), respectively, in the TB group. Afterwards, it was tested on a biomarker validation cohort, and the results showed that it had 97.1 percent sensitivity as well as 91.4 percent specificity. We have discovered a two-cytokine bio signature that can be used to accurately distinguish ATB patients from people with LTBI and CON, respectively. This procedure has the potential to be used as an early and quickly diagnostic test for ATB.

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