Evaluation of a TNF-Alpha Modulator for Clinical and Molecular Indicators of Analgesic Effect
Information source: National Institutes of Health Clinical Center (CC)
ClinicalTrials.gov processed this data on August 23, 2015 Link to the current ClinicalTrials.gov record.
Condition(s) targeted: Pain
Intervention: Thalidomide, Ibuprofen or Diazepam (Drug)
Phase: Phase 2
Status: Completed
Sponsored by: National Institute of Nursing Research (NINR)
Summary
This study will evaluate the role of thalidomide, a tumor necrosis factor (TNF)-alpha
modulator, on severe inflammation and relief of pain following extraction of wisdom teeth.
TNFs are substances that affect the pathways of pain. This study involves an experimental
group in which patients will be given thalidomide or a placebo (an inactive substance); a
negative control group receiving the medication diazepam or a placebo; and a positive
control group receiving diazepam or ibuprofen.
Patients who are males ages 16 to 35, who are not allergic to aspirin or other nonsteroidal
anti-inflammatory drugs (known as NSAIDs), sulfites, or certain anesthetics, and who in good
health may be eligible for this study. Females are not eligible, owing to the risks that
thalidomide presents to unborn children. To minimize the risk of fetal malformations, male
patients who participate must use a condom during sexual intercourse for 4 weeks following
the study and must not donate blood for 4 weeks.
The medications used in the study will be given 1 hour before surgery. Then after the wisdom
teeth are removed, a small piece of tubing will be placed into both sides of the patient's
mouth where the teeth were removed. Every 20 minutes, for the next 6 hours, the researchers
will collect inflammatory fluid from the tubing, to measure for changes in anti-inflammatory
action. If they request pain relievers, patients will receive the medication ketorolac
(Toradol), used for short-term treatment of moderately severe acute pain. Side effects of
thalidomide include fatigue, dizziness, and rash. The use of ibuprofen and ketorolac may
include the risk of gastrointestinal ulcers and bleeding. Diazepam can cause involuntary
muscle movements and drowsiness, as well as dizziness lasting for up to 24 hours after it
has been used as sedation. Patients will be instructed not to try to walk alone or to try to
drive a vehicle during that period. Other risks related to participation in this study
include those usually experienced with removal of wisdom teeth-that is, pain and swelling,
bruising from insertion of the sedative into a vein (if needed), possible infection at the
extraction site, prolonged bleeding, and numbness.
Benefits from participating are having wisdom teeth removed at no cost as well as close
monitoring before and after surgery. Results from the study may help people in the future by
improving the management of pain following surgery.
Clinical Details
Official title: Evaluation of TNF-Alpha Modulator for Clinical and Molecular Indicators of Analgesic Effect
Study design: Endpoint Classification: Safety/Efficacy Study, Primary Purpose: Treatment
Detailed description:
The proposed investigation is a randomized, double-blind, placebo and positive-controlled
clinical study to evaluate the role of the cytokine tumor necrosis factor alpha (TNF-alpha)
modulator, thalidomide, in acute inflammation and analgesia. The analgesic effect of
thalidomide, a putative TNF-alpha modulator, will be evaluated using a model of tissue
injury, the oral surgery model. Briefly, healthy males referred for third molar extraction
will undergo the surgical extraction of third molars using standard surgical methods. At the
completion of the surgical procedure, a microdialysis probe will be placed under the
mucogingival flap previously elevated for the surgical procedure and subjects will be
observed for pain over the course of six hours following surgery. Thalidomide or control
will be administered one hour prior to surgery. Tissue levels of pro-inflammatory
cytokines, and inflammatory mediators will be measured at time intervals postoperatively
concomitant with pain measurements. Pain will be assessed postoperatively over the course
of six hours. Demonstration of amelioration of pain is the primary outcome measure; changes
in levels of tissue mediators will be taken as evidence of an acute anti-inflammatory effect
of thalidomide. Based on our previous work with the fusion protein etanercept (TNFR: fc)
which specifically binds TNF-alpha and prevents its interaction with cellular receptors,
similar changes in the inflammatory cascade and clinical endpoints of inflammation may
provide insight into the activity of thalidomide on acute inflammation and its clinical
sequela, pain.
Eligibility
Minimum age: N/A.
Maximum age: N/A.
Gender(s): Male.
Criteria:
INCLUSION CRITERIA:
- male patients referred for extraction of third molars willing to undergo surgical
extraction of all indicated third molars
- a minimum of one partial-bony impacted third molar, with a total difficulty score
total of not less than 8
- between the ages of 16 to 35 years (based upon eruption patterns and age-related
complications associated with surgical extraction of third molars)
- in good general health- ASA status 1 or 2 (healthy subjects based upon criteria for
safe outpatient conscious sedation)
- willing to undergo observation period for six hours postoperatively
EXCLUSION CRITERIA:
- females
- current mental disorder or substance abuse
- allergy to aspirin, NSAIDs, or sulfonamide
- history of peptic ulcers and GI bleeding
- concurrent use of agents which may potentiate the sedative effect of study drugs,
alcohol, opioids, benzodiazapines
- chronic use of medications confounding assessment of the inflammatory response or
analgesia, antihistamines, NSAIDs, steroids, antidepressants
- presence of chronic debilitating disease (such as diabetes, rheumatoid arthritis,
liver disease, etc.)
- presence of symptomatic tooth suggesting infection or inflammation
- excessive surgical difficulty encountered during the surgical procedure, resulting in
a difficulty score of 5 for any tooth
- patients with acute narrow angle glaucoma, and open angle glaucoma who are not
receiving therapy
Locations and Contacts
National Institute of Nursing Research (NINR), Bethesda, Maryland 20892, United States
Additional Information
Related publications: Anthonsen MW, Solhaug A, Johansen B. Functional coupling between secretory and cytosolic phospholipase A2 modulates tumor necrosis factor-alpha- and interleukin-1beta-induced NF-kappa B activation. J Biol Chem. 2001 Aug 10;276(32):30527-36. Epub 2001 Jun 4. Barosi G, Grossi A, Comotti B, Musto P, Gamba G, Marchetti M. Safety and efficacy of thalidomide in patients with myelofibrosis with myeloid metaplasia. Br J Haematol. 2001 Jul;114(1):78-83. Bastuji-Garin S, Ochonisky S, Bouche P, Gherardi RK, Duguet C, Djerradine Z, Poli F, Revuz J; Thalidomide Neuropathy Study Group. Incidence and risk factors for thalidomide neuropathy: a prospective study of 135 dermatologic patients. J Invest Dermatol. 2002 Nov;119(5):1020-6.
Starting date: July 2005
Last updated: March 3, 2008
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