Scar Clinical Trial - Botox in the Healing of Surgical Wounds of the Neck

Status Recruiting

Clinical Trial Summary

The investigators hypothesize that Botox A will reduce scarring and improve healing of surgical neck wounds.

Clinical Trial Description

Botulinum Toxin A is a toxin produced by the anaerobic bacterial species Clostridium botulinum. The toxin specifically inhibits release of the neurotransmitter Acetylcholine at synaptic junctions, thus preventing neuromuscular transmission, and inducing paralysis of the muscle.

Previous studies have indicated that tensile forces on the skin may affect the healing of a wound. These forces act against the immature collagen laid down during wound healing and may stimulate overgrowth, thereby contributing to the formation of hypertrophic scars or keloids.

Using botox to paralyse the underlying muscles may reduce the tensile force on the overlying skin, and thus reduce scar formation and promote healing. Botox has also been shown to affect the cell cycle distribution of fibroblasts derived from hypertrophic scars.

The objective of this study is to determine the effects of BTX-A in wound healing and the reduction of scar formation.

Patients undergoing a thyroidectomy or parathyroidectomy will be randomized to receive either BTX-A injections along the surgical site or placebo immediately following closure. All incisions will be sutured in a similar fashion. BTX-A or normal saline will then be injected along the platysma muscle. The patient and the surgeon will be blinded to the treatment arm. Photographs will be taken of the surgical site at 4 weeks and 6 months. The patient and two otolaryngologists will independently score the healing of the wound using a standardized scoring method. The scores be compared between the two surgeons to determine correspondence and interobserver reliability.

The scores of the two treatment arms will be compared to reveal the effect of BTX-A on wound healing. ;

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Prevention

Related Conditions & MeSH terms

Scar

Clinical Trial Details

NCT number	NCT01177358
Study type	Interventional
Source	Nova Scotia Health Authority
Contact	Elaine W Fung, BSc, MD
Phone	1-902-412-1240
Email	elaine.fung@dal.ca
Status	Recruiting
Phase	Phase 2
Start date	September 2011
Completion date	July 2015

View Details

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.