Abstract
Nowadays, many people suffer from Neurological Diseases (NDs), particularly neurodegenerative diseases. Hence, there is an urgent need to discover new and more effective diagnostic and prognostic biomarkers as well as therapeutic strategies for the treatment of NDs. In this context, detecting biomarkers can provide helpful information on various levels of NDs. Up to now, there has been a lot of progress in recognizing these diseases, but they are not completely clear yet. NDs are associated with inflammatory conditions and there are several differences in NDs’ immune biomarkers compared to normal conditions. Among these biomarkers, soluble CD163 (sCD163) levels (as a new biomarker) increase in biofluids, relating to the activation of macrophage/microglia and inflammation levels in NDs. ADAM17/TACE and ADAM10 are the responsible enzymes for producing sCD163 from macrophages. Increased shedding of CD163 is caused by inflammatory stimuli, and a function has been hypothesized for sCD163 in immunological suppression. When the body confronts an inflammation or infection, the concentration of sCD163 drives up. sCD163 is stable and can be easily quantified in the serum. In addition to its role as a biomarker, sCD163 can be a good modulator of adaptive immune suppression after stroke. sCD163, with a long half-life, has been proposed to be a surrogate for some critical markers such as Tumor Necrosis Factor-α (TNF- α). Furthermore, sCD163 production can be regulated by some regents/approaches such as zidovudine, nanotechnology, combination antiretroviral treatment, and aprepitant. Considering the importance of the issue, the critical role of sCD163 in NDs was highlighted for novel diagnostic and prognostic purposes.
Keywords: Diagnostic biomarker, prognostic biomarker, predictive biomarker, marker of treatment response, disease duration, brain injury, neurological disabilities, circulating soluble CD163, Decoy receptors, CNS-directed autoimmune response.
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