Abstract
Recombinant interleukin-2 (IL-2) therapy for malignancy is associated with a pulmonary vascular leakage syndrome (VLS) similar to that seen in sepsis. We investigated the possibility that the IL-2-induced VLS may be associated with the release of peroxynitrite (ONOO-), and used a model of IL-2-induced VLS in sheep to test the effects of the ONOO- decomposition catalyst WW-85. Eighteen sheep were chronically instrumented and randomly divided into three groups (n = 6 per group): sham: lactated Ringer's solution, control: IL-2, and treatment: IL-2 and WW-85. Treatment with WW-85 significantly improved lung transvascular fluid flux, decreased lipid peroxidation, limited iNOS as well as PAR intensity, prevented tachycardia, and attenuated the increase in core body temperature resulting from IL-2 treatment. These findings suggest that ONOO- plays a pivotal role in the pathology of IL-2-induced pulmonary VLS, and that WW-85 may become a useful treatment option.
Original language | English (US) |
---|---|
Pages (from-to) | 786-791 |
Number of pages | 6 |
Journal | Biochemical and Biophysical Research Communications |
Volume | 377 |
Issue number | 3 |
DOIs | |
State | Published - Dec 19 2008 |
Keywords
- Cancer therapy
- Lung lymph flow
- Nitric-oxide
- Transvascular fluid flux
- Vascular leakage
ASJC Scopus subject areas
- Biophysics
- Biochemistry
- Molecular Biology
- Cell Biology