Pediatric Nephrology

, Volume 24, Issue 5, pp 1033–1038 | Cite as

Increased nitric oxide production by T- and B-cells in idiopathic nephrotic syndrome

  • Anna Iharada
  • Kazunari Kaneko
  • Shoji Tsuji
  • Masafumi Hasui
  • Seiji Kanda
  • Toshimasa Nishiyama
Original Article

Abstract

The pathogenesis of idiopathic nephrotic syndrome (INS) remains unclear. To study the role of nitric oxide (NO) in INS, we measured intracellular NO produced by T- and B-cells using a novel fluorescent indicator. Twelve children with INS (mean age 7.3 years; group A-1: in relapse, group A-2: in remission) were enrolled in the study together with 16 children with other renal diseases (9.5 years; group B) and 42 healthy control children (7.7 years; group C). The amount of NO produced by CD3+ cells (T-cells) and CD19+ cells (B-cells) and of plasma NOx was measured by flow cytometry and colorimetry, respectively. The average amount of NO produced by CD3+ and CD19+ cells in group A-1 subjects was significantly higher than that produced by these cells in group A-2 and B patients and the healthy controls (group C), respectively (P < 0.01), and it decreased after the patients achieved remission (P < 0.01). Plasma NOx levels in group A-1 patients was also highest among the different groups (P < 0.01). There were no significant differences in intracellular NO and plasma NOx among group A-2, B, and C subjects (P > 0.05). A significant correlation between plasma NOx and urinary protein excretion was found only in group A patients and not in group B patients. We conclude that an aberrant immune system may exist not only in T-cells but also in B-cells, and NO may play some role in INS.

Keywords

B-cell CD3+ CD19+ Idiopathic nephrotic syndrome Nitric oxide T-cell 

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Copyright information

© IPNA 2009

Authors and Affiliations

  • Anna Iharada
    • 1
  • Kazunari Kaneko
    • 1
  • Shoji Tsuji
    • 1
  • Masafumi Hasui
    • 1
  • Seiji Kanda
    • 2
  • Toshimasa Nishiyama
    • 2
  1. 1.Department of PediatricsKansai Medical UniversityHirakata-shi, OsakaJapan
  2. 2.Public HealthKansai Medical UniversityOsakaJapan

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