Effectiveness of Botulinum Toxin A in Preventing Scar Formation and Initial Exploration of "Optimal Concentration"

Scar Clinical Trial

Official title:

Effectiveness of Botulinum Toxin A in Preventing Scar Formation and Initial Exploration of "Optimal Concentration"

Clinical Trial Details — Status: Active, not recruiting

Administrative data

• NCT number: NCT06349733
• Other study ID #: MR-37-23-008382
• Status: Active, not recruiting
• Phase: Early Phase 1
• Start date: March 23, 2023
• Est. completion date: April 10, 2024

Study information

• Verified date: March 2024
• Source: Qilu Hospital of Shandong University
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Each year, millions of burn, trauma, or surgical patients worldwide suffer from scarring that severely affects their quality of life and social functioning. In order to prevent and treat diseases related to abnormal scar hyperplasia, clinicians and researchers have adopted various methods, such as scar grinding, surgical resection, drug injection in scar tissue, cryotherapy, laser and so on. However, these methods can not effectively inhibit the abnormal proliferation of scars and improve the adverse effects of existing scars on patients. To date, there is no accepted gold standard for the effective treatment and improvement of abnormal scar tissue.

Description:

Through a large number of literature review and preliminary experiments, we summarized and found the following problems: a. The latest research on prevention of scar formation by botulinum toxin type A is only aimed at surgical wounds from the wound type, and there is no research on the scar prevention effect of trauma wounds. b. From the point of view of the study site, there is no study on the effect of scar prevention only on the head, neck, chest and other parts of the body. c. For the research results of botulinum toxin type A in the prevention of scarring, the current research focuses on the effectiveness of botulinum toxin type A at a certain concentration, and does not compare the effects of botulinum toxin type A at various concentrations.

Therefore, in order to explore the "optimal concentration" of botulinum toxin type A to prevent scar formation; To explore the effect of botulinum toxin A on scar prevention of traumatic wounds and surgical incisions. To explore the effect of botulinum toxin A on scar prevention in other parts of the body in addition to effective prevention of head, neck and chest scar, We intend to focus on the effectiveness and "optimal concentration" of botulinum toxin type A to prevent scarring, to determine the effect of this means on scar prevention, to provide new ideas for botulinum toxin type A to prevent scarring, and to broaden the methods of scar prevention.

Patients were randomly assigned to experimental group and control group. The experimental group was treated according to botulinum toxin type A The concentration gradient of toxin was set to 3 groups:1 U,2.5 U,5 U, and the control group was injected with 0.9% Nacl.Follow-up was performed immediately after surgery,7 days,15 days,1,3, and 6 months. Follow-up was performed according to SBSES, pruritus, pain, and patient satisfaction.

Recruitment information / eligibility

• Status: Active, not recruiting
• Enrollment: 50
• Est. completion date: April 10, 2024
• Est. primary completion date: November 10, 2023
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 12 Years to 65 Years

Eligibility

Inclusion Criteria:

Patients with emergency trauma and skin swellings, with clear consciousness, no mental retardation or cognitive difficulties, agree to participate in this study, 12= age = 65 years old

Exclusion Criteria:

1. Allergic to botulinum toxin type A;

2. Pregnant, lactating women, patients who plan to get pregnant in the near future;

3. Patients taking retinoic acid, synthetic steroids, amino glycosides antibiotics, calcium channel blockers, cyclosporine and cholinesterase inhibitors; 4 Neuromuscular diseases: such as myasthenia gravis, Lambert-Eaton syndrome, multiple sclerosis;

5. Patients with cardiovascular diseases, kidney diseases, liver and other basic diseases; 6 Patients with infection at the injection site; 7 Expect unrealistic patients.

Related Conditions & MeSH terms

• Scar

Intervention

Drug:
• Botulinum toxin type A
Eligible patients were randomly assigned to the experimental group and the control group. Patients in the experimental group will be randomized to receive injections of 1 U,2.5 U, and 5 U botulinum toxin type A,Patients in the control group received an injection of 0.9% Nacl

Locations

Country	Name	City	State
China	Qilu Hospital of Shandong University Dezhou Hospital	Dezhou	Shandong

Sponsors (1)

Lead Sponsor	Collaborator
Qilu Hospital of Shandong University

Country where clinical trial is conducted

China, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	The modified Stony Brook Scar Evaluation Scale	The mSBSES included width (0 = scar enlargement prominent and > 2 mm, 1 = presence of scar enlargement = 2 mm, 2 = no scar widening), height (0 = marked scar uplift, 1 = presence of scar uplift, 2 = no scar uplift), color (0 = scar significantly redder than surrounding, 1 = scar redder than surrounding and 2 = scar the same color as or lighter than surrounding skin), The visibility of the incision line (0 = marked incision line, 1 = presence of incision line, 2 = absence of incision line) was objectively assessed separately in non-chronological order, with overall scar values varying from 0 to 8, with higher scores indicating better scar appearance.	Postoperative 7 days, 15 days, 1 month, 3 months, 6 months
Secondary	Patient satisfaction	Patient satisfaction was measured on a four-point scale, with 1 = dissatisfied,2 = somewhat satisfied,3 = satisfied, and 4 = very satisfied.	Postoperative 7 days, 15 days, 1 month, 3 months, 6 months