Loading…
Altered chemokine levels in individuals at risk of Type 1 diabetes mellitus
Aims The hypothesis was tested in an exploratory study that individuals at high risk of developing Type 1 diabetes mellitus have altered systemic levels of cytokines and chemokines. Subjects and methods Forty‐two non‐diabetic first‐degree relatives of patients with Type 1 diabetes mellitus were re...
Saved in:
Published in: | Diabetic medicine 2006-02, Vol.23 (2), p.156-163 |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Summary: | Aims The hypothesis was tested in an exploratory study that individuals at high risk of developing Type 1 diabetes mellitus have altered systemic levels of cytokines and chemokines.
Subjects and methods Forty‐two non‐diabetic first‐degree relatives of patients with Type 1 diabetes mellitus were recruited. Of these, 18 had multiple islet autoantibodies (islet cell antibody, glutamic acid decarboxylase antibody, IA‐2 antibody). Follow‐up for 9–11 years confirmed high vs. moderate diabetes risk in islet autoantibody‐positive vs. ‐negative relatives. Cytokines and chemokines were determined by enzyme‐linked immunosorbent assay (ELISA).
Results Serum concentrations of classic Th1‐associated cytokines (IFN‐γ, IL‐12, IL‐18) or Th2/Treg‐associated cytokines (IL‐5, IL‐10, IL‐13) did not significantly differ in high vs. moderate diabetes risk group. However, of six chemokines analysed, levels of CCL3 and CCL4 were increased (P = 0.0442 and P = 0.0334) while CCL2 was decreased (P = 0.0318) in the multiple islet autoantibody‐positive group. No significant differences were seen for CCL5, CCL11, CXCL10. There was a significant correlation between the two closely related chemokines CCL3 and CCL4 in individuals at risk (r = 0.84, P = 0.00005), but not in the autoantibody‐negative group.
Conclusion Relatives at high risk of developing Type 1 diabetes mellitus have abnormal cellular immune regulation at the level of systemic chemokines. The up‐regulation of CCL3 and CCL4 vs. down‐regulation of CCL2 suggests opposed functions of these chemokines in the disease process. These findings need to be confirmed by independent studies. |
---|---|
ISSN: | 0742-3071 1464-5491 |
DOI: | 10.1111/j.1464-5491.2005.01743.x |