Cellulose sulfate increases blood concentration of kinins in rats

Intravenous injection of cellulose sulfate (CS) in rats induced a dose-dependent decrease of blood pressure accompanied by a concomitant increase of circulating levels of immunoreactive bradykinin (BK) from a level of 52 pg/mL of blood in control animals to 400 pg/mL in the group injected with 3.0 mg/kg of CS. An increase of desArg9BK was also observed while the blood concentration of BK(1-7) remained constant. Kinins contents in acidic extracts of lungs increased slightly while renal kinins from the same animals showed a slight decrease. The results suggest that plasma kallikrein-kinin system mediates CS-induced hypotension and that glandular kallikreins do not participate to the hypotensive action of CS.