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Kinetics of T-cell-based assays on cerebrospinal fluid and peripheral blood mononuclear cells in patients with tuberculous meningitis

  • Park, Ki-Ho (Division of Infectious Diseases, Department of Internal Medicine, Kyung Hee University School of Medicine) ;
  • Lee, Mi Suk (Division of Infectious Diseases, Department of Internal Medicine, Kyung Hee University School of Medicine) ;
  • Lee, Sang-Oh (Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Choi, Sang-Ho (Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Kim, Yang Soo (Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Woo, Jun Hee (Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Kang, Joong Koo (Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Lee, Sang-Ahm (Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Kim, Sung-Han (Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine)
  • Received : 2013.11.04
  • Accepted : 2013.12.19
  • Published : 2014.11.01

Abstract

Background/Aims: The goal of this study was to monitor tuberculosis (TB)-specific T-cell responses in cerebrospinal f luid-mononuclear cells (CSF-MCs) and peripheral blood mononuclear cells (PBMCs) in patients with tuberculous meningitis (TBM) over the course of anti-TB therapy. Methods: Adult patients (${\geq}16$ years) with TBM admitted to Asan Medical Center, Seoul, South Korea, were prospectively enrolled between April 2008 and April 2011. Serial blood or CSF samples were collected over the course of the anti-TB therapy, and analyzed using an enzyme-linked immunosorbent spot (ELISPOT) assay. Results: Serial ELISPOT assays were performed on PBMCs from 17 patients (seven definite, four probable, and six possible TBM) and CSF-MC from nine patients (all definite TBM). The median number of interferon-gamma (IFN-${\gamma}$)-producing T-cells steadily increased during the first 6 months after commencement of anti-TB therapy in PBMCs. Serial CSF-MC ELISPOT assays revealed significant variability in immune responses during the first 6 weeks of anti-TB therapy, though early increases in CSF-MC ELISPOT results were associated with treatment failure or paradoxical response. Conclusions: Serial analysis of PBMCs by ELISPOT during the course of treatment was ineffective for predicting clinical response. However, increases in TB-specific IFN-${\gamma}$-producing T-cells in CSF-MC during the early phase of anti-TB therapy may be predictive of clinical failure.

Keywords

Acknowledgement

Supported by : National Research Foundation of Korea (NRF)

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