Elevated Levels of Immunoglobulin E May Indicate Steroid Resistance or Relapse in Adult Primary Nephrotic Syndrome,Especially in Minimal Change Nephrotic Syndrome

Abstract

Immunoglobulin E (IgE) antibodies may play a role in the development of kidney diseases that are related to hypersensitivity reactions. Patients with idiopathic nephrotic syndrome often exhibit increased serum IgE levels and this may be related to sensitivity to steroid treatment. In the present study, the serum IgE levels in 120 patients with different types of primary nephrotic syndrome (PNS) were analysed and found to be significantly elevated in cases of minimal change nephrotic syndrome (MCNS) compared with membranous nephropathy or membranoproliferative glomerulonephritis. No difference in serum IgE level was observed between cases of steroid-sensitive nephrotic syndrome (SSNS) or steroid-resistant nephrotic syndrome, although the serum IgE level was significantly elevated in SSNS patients in relapse compared with SSNS patients in remission. In MCNS patients, 73.6% exhibited SSNS regardless of their serum IgE level at diagnosis. It is concluded that elevated levels of IgE may be a feature of steroid resistance or relapse, indicating prognostic significance in adult PNS, particularly in MCNS.

Keywords

Immunoglobulin E Primary nephrotic syndrome Minimal change nephrotic syndrome Steroid-sensitive nephrotic syndrome Steroid-resistant nephrotic syndrome Nephrotic syndrome relapse

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