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[Role of CD4+CD25+Foxp3+ regulatory T cells in type 2 diabetic nephropathy]

Jing Xu1, Hong-li Su, Jun-hong Wang

  • 1Department of Endocrinology, Second Affiliated Hospital, Xi'an Jiaotong University College of Medicine, Xi'an 710004, China. xujingj dey85@163.com

Nan Fang Yi Ke Da Xue Xue Bao = Journal of Southern Medical University
|February 17, 2009
PubMed
Abstract

Insights

Regulatory T cells (Treg) are reduced in type 2 diabetic nephropathy, particularly in advanced stages with macroalbuminuria. Lower Treg cell expression correlates with disease severity and urinary albumin excretion, suggesting a role in disease progression.

Area of Science:

  • Immunology
  • Nephrology
  • Endocrinology

Background:

  • Type 2 diabetic nephropathy (T2DN) is a major complication of type 2 diabetes.
  • Regulatory T cells (Treg) play a crucial role in immune homeostasis and preventing autoimmunity.
  • The specific role of Treg cells in T2DN pathogenesis remains incompletely understood.

Purpose of the Study:

  • To investigate the involvement of CD4+CD25+Foxp3+ Treg cells in T2DN.
  • To explore potential therapeutic targets for T2DN prevention and treatment.

Main Methods:

  • Flow cytometry was employed to quantify CD4+CD25+Foxp3+ Treg cell expression rates.
  • Analysis included 60 patients with T2DN and 15 healthy controls.
  • Patients were stratified based on urinary albumin excretion (microalbuminuria vs. macroalbuminuria).

Main Results:

  • No significant difference in Treg cell expression was observed between all T2DN patients and controls.
  • Treg cell expression was significantly lower in T2DN patients with microalbuminuria and macroalbuminuria compared to controls.
  • Patients with macroalbuminuria exhibited significantly lower Treg cell expression than those with microalbuminuria.
  • A significant inverse correlation was found between Treg cell expression and disease duration.
  • Urinary albumin excretion rate (UAER) showed a significant inverse correlation with Treg cell expression.

Conclusions:

  • CD4+CD25+Foxp3+ Treg cells are implicated in the development and progression of type 2 diabetic nephropathy.
  • Reduced Treg cell function may contribute to the pathogenesis of T2DN.
  • Modulating Treg cell activity could be a potential therapeutic strategy for T2DN.

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