Related Experiment Videos
Evidence for eosinophil activation in eosinophilic cystitis
S Dubucquoi1, A Janin, P Desreumaux
1Department of Pathology C, Hôpital Calmette, CHU Lille, France.
European Urology
|January 1, 1994
Summary
Eosinophilic cystitis (EC) involves activated eosinophils damaging bladder tissue. This study found these eosinophils produce interleukin-5 (IL-5), potentially explaining chronic EC lesions.
Area of Science:
- Urology
- Immunology
- Pathology
Background:
- Eosinophilic cystitis (EC) is a rare bladder condition.
- Activated eosinophils release cytotoxic proteins, causing tissue damage.
- Interleukin-5 (IL-5) is a cytokine known to attract and activate eosinophils.
Observation:
- This study investigated eosinophil activation in EC using electron microscopy, in situ hybridization, and immunochemistry.
- Researchers specifically looked for IL-5 synthesis and secretion by eosinophils.
Findings:
- Numerous activated eosinophils were identified in a typical EC case.
- These eosinophils were actively synthesizing and secreting IL-5 protein.
Implications:
- IL-5 production by activated eosinophils may drive EC pathogenesis.
- This mechanism could contribute to the chronic nature of lesions observed in eosinophilic cystitis.