CELLULAR IMMUNITY ACTIVATION METHOD BY STIMULATING RD1 COMPLEX PROTEINS AS VIRULENCE MARKER ON Mycobacterium tuberculum TO ESTABLISH DIAGNOSIS ON TUBERCULOSIS AND LATENT TUBERCULOSIS INFECTION

cellular immunity activation Region of Difference 1 (RD1) complex proteins stimulation virulence markers Mycobacterium tuberculosis diagnosis on Latent Tuberculosis Infection (LTBI)

Authors

  • Rebekah Setiabudi
    rebekahsetiabudi@gmail.com
    Department of Medical Microbiology, Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia
  • Ni Made Mertaniasih Department of Medical Microbiology, Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia
  • Didik Didik Handijatmo Faculty of Veterinary, Universitas Airlangga, Surabaya, Indonesia
  • Retno Asih Setyoningrum Department of Pediatrics, Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia
January 18, 2016

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This study was intended to invent a simpler and more affordable method to establish diagnosis on Tuberculosis (TB) and Latent Tuberculosis infection (LTBI). Similar to "Quantiferon TB Gold In Tube” (QFT-GIT) and T.SPOT.TB methods, the researchers also utilized "early secreted antigenic target 6kDa” (ESAT-6) and "cultur filtrate protein 10kDa” (CFP-10) proteins to be induced on the specimen. ESAT-6 and CFP-10 are commercial products used to induce interferon gamma (INF-γ) which were to be read using sophisticated and expensive equipment. This study was intended to conduct an analysis on effective cocktail protein modification, i.e. ESAT-6, CFP-10 and Ag85A/B/C, with high validity to detect cellular immunity activity through in vitro examination on peripheral blood monocyte cells of Tuberculosis-suspected patients or patients with latent tuberculosis infection. Peripheral Blood Monocyte Cells (PBMCs) activity on children tuberculosis patient or Latent Tuberculosis Infection (LTBI), adult tuberculosis patient or LTBI, which induced by cocktail protein modification and not induced, were analyzed microscopically. The activity of PBMCs on children and adult tuberculosis patient or LTBI induced by RD1 secretory proteins: ESAT-6, CFP-10, Ag85A/B/C was higher compared to PBMCs which had not been induced by the secretory proteins. Cellular debris and monocyte cells with abnormal shapes were found on PBMCs which had been induced by RD1 secretory proteins at 8 th day after culture.

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