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  • 1 Hungarian Academy of Sciences, Semmelweis University, Budapest, Hungary
  • 2 Uzsoki Street Hospital, Budapest, Hungary
  • 3 Semmelweis University, Budapest, Hungary
  • 4 Semmelweis University, Budapest, Hungary
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Mitochondrial functions have a major impact on T-cell functionality. In this study we characterized whether mitochondrial function in the neonatal T-cells differs from that in the adult T-cells during short T-cell activation. Methods: We used fow cytometry methods to test mitochondrial mass and to monitor mitochondrial Ca2+ levels, mitochondrial potential and superoxide generation in parallel with cytoplasmic Ca2+ levels during phythohaemagglutinine-induced activation of CD4+ and CD8+ T-cells of 12 term neonates and 11 healthy adults. Results: Baseline mitochondrial mass of CD4+ and CD8+ cells was lower in the neonate than in the adult. In comparison with the adult, neonatal resting CD4+ T-cells had lower cytoplasmic Ca2+ levels and this was associated with normal activation induced Ca2+-response. During short-term activation cytoplasmic Ca2+-response was lower in neonatal than in adult CD8+ T-cells. Mitochondrial Ca2+ uptake was increased in CD4+ neonatal T cells while it decreased in CD8+ T-cells. Mitochondrial depolarization was increased in CD4+ and decreased in CD8+ neonatal T-cells compared to adults. Superoxide generation was higher and equal in neonatal CD4+ and CD8+ cells, respectively, compared to the adult ones. Conclusion: Our data suggest that neonatal T-cells exhibit marked differences in mitochondrial function and superoxide generation compared to adult T-cells.

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Senior editors

Editor(s)-in-Chief: Rosivall, László

Honorary Editor(s)-in-Chief): Monos, Emil

Managing Editor(s): Bartha, Jenő; Berhidi, Anna

Co-editor(s): Koller, Ákos; Lénárd, László; Szénási, Gábor

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Hungarian Editorial Board

      Benedek, György (Szeged)
      Benyó, Zoltán (Budapest)
      Boros, Mihály (Szeged)
      Chernoch, László (Debrecen)
      Détári, László (Budapest)
      Hamar, János (Budapest)
      Hantos, Zoltán (Szeged)
      Hunyady, László (Budapest)
      Imre, Sándor (Debrecen)
      Jancsó, Gábor (Szeged)
      Karádi, Zoltán (Pécs)
      Kovács, László (Debrecen)
      Palkovits, Miklós (Budapest)
      Papp, Gyula (Szeged)
      Pavlik, Gábor (Budapest)
      Spät, András (Budapest)
      Szabó, Gyula (Szeged)
      Szelényi, Zoltán (Pécs)
      Szolcsányi, János (Pécs)
      Szollár, Lajos (Budapest)
      Szücs, Géza (Debrecen)
      Telegdy, Gyula (Szeged)
      Toldi, József (Szeged)
      Tósaki, Árpád (Debrecen)

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