NCT00921505

Effect of Ibuprofen, Paracetamol and Their Combination on Radical Oxygen Species (ROS) Production

The Effect of Ibuprofen, Paracetamol and Their Combination on Reactive Oxygen Species (ROS)- Production in Leukocytes and Platelet Activation

• Status: Completed
• Phase: Phase 4
• Study type: Interventional
• Enrollment: 7 (estimated)
• Sponsor: Ullevaal University Hospital · Academic / Other
• Sex: All
• Age: 18 Years – 35 Years
• Healthy volunteers: Not accepted

Summary

The purpose of this study is to determine whether paracetamol, ibuprofen or their combination can modify generation of radical oxygen species (ROS) from stimulated neutrophils.

Detailed description

Non-steroidal anti-inflammatory drugs (NSAID) are used to alleviate clinical inflammatory symptoms (e.g. pain, swelling and reduced function). Leukocytes, upon activation during inflammatory states, generate radical oxygen species (ROS) which primarily are intended for host defence against invading pathogens. Certain NSAID can modify the generation of ROS from stimulated neutrophils ranging form increased production to reduced production. Preliminary experiments in our laboratory have shown that different NSAIDs have opposing effects on the ability of leukocytes (granulocytes and monocytes) to produce ROS upon a standardized stimulus, i.e. phorbol myristate acetate (PMA). Paracetamol has a marked inhibitory effect and ibuprofen has a facilitating effect on ROS production. An inhibitory effect of paracetamol was also seen when examining platelet activation markers, whereas acetylsalicylic acid showed a clear enhancing effect in this respect. We want to examine if intake of paracetamol or ibuprofen in vivo have similar effects on leukocyte ROS production and platelet activation, respectively.

Conditions

• Pain

Interventions

Type	Name	Description
DRUG	Ibuprofen	Tablet ibuprofen 400 mg oral single dose (1 tablet)
DRUG	Ibuprofen	Tablets (2 x 600 mg) oral single dose (2 tablets)
DRUG	Paracetamol (acetaminophen) 1000 mg	Tablets (2 x 500 mg) oral single dose (2 tablets)
DRUG	Paracetamol + ibuprofen	Tablets (ibuprofen 400 mg + paracetamol (acetaminophen) 2 x 500 mg) single oral dose (3 tablets)

Timeline

• Start date: 2009-05-01
• Primary completion: 2010-01-01
• Completion: 2010-01-01
• First posted: 2009-06-16
• Last updated: 2011-07-06

Locations

1 site across 1 country: Norway