Skip to content

"Ultrasound-Enhanced Propolis Therapy for Healing Diabetic Foot Wounds"

Effectiveness of Propolis Phonophoresis on Wound Healing in Diabetic Ulcer: a Randomized Controlled Trial

Status
Not yet recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07099482
Acronym
PEARL
Enrollment
80
Registered
2025-08-01
Start date
2026-08-30
Completion date
2027-09-25
Last updated
2026-08-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chronic Wound Healing, Diabetic Foot Ulcer t, Type 1 Diabetes Mellitus, Type 2 Diabetes Mellitus, Wound Management

Brief summary

This study aims to evaluate whether using ultrasound (phonophoresis) can help deliver propolis-a natural compound made by bees-more effectively into the skin to speed up wound healing in people with diabetic foot ulcers. Diabetic foot ulcers are a common and serious complication of diabetes and often take a long time to heal. Propolis has natural anti-inflammatory and antimicrobial properties that may promote healing, but it does not easily penetrate the skin. By using ultrasound to enhance absorption, this study tests whether combining propolis with phonophoresis is more effective than standard wound care alone. Participants will be randomly assigned to receive either the propolis ultrasound therapy or standard care. The study will measure wound size, healing time, pain, infection rates, and quality of life.

Detailed description

This randomized, double-blind, controlled clinical trial investigates the therapeutic effectiveness of propolis phonophoresis in treating diabetic foot ulcers (DFUs). DFUs affect approximately 25% of diabetic patients and are associated with high morbidity, prolonged healing, and significant healthcare costs. Propolis, a resinous substance produced by honeybees, has shown antimicrobial, anti-inflammatory, and wound-healing properties in previous studies. However, its limited skin permeability reduces its clinical utility when used topically. Phonophoresis is a non-invasive technique that uses ultrasound waves to enhance transdermal drug delivery. This study combines a 10% propolis gel with therapeutic ultrasound (1 MHz, 0.5-1.5 W/cm², pulsed mode at 20%) to evaluate its impact on wound healing outcomes compared to standard wound care. The intervention group will receive propolis phonophoresis therapy three times per week for four weeks. The control group will receive standard wound care and a sham ultrasound. Primary outcome measures include the percentage reduction in wound area, assessed via digital planimetry. Secondary outcomes include time to full wound closure, pain scores, infection rates, and quality-of-life assessments. The study is designed to explore whether this combined therapeutic approach can offer a clinically superior and non-surgical treatment alternative for patients with chronic diabetic ulcers.

Interventions

DEVICESham ultrasound (placebo)

Participants will receive conventional wound care including debridement, cleaning, and dressing. A sham ultrasound device that emits no therapeutic waves will be applied to simulate the intervention procedure.

DRUGPropolis gel (10%)

Participants will receive topical application of 10% propolis gel on the diabetic foot ulcer followed by therapeutic ultrasound (phonophoresis) using 1 MHz frequency, 0.5-1.5 W/cm² intensity, pulsed mode (20%), for 5 minutes per session, 3 sessions/week for 4 weeks.

Sponsors

Sinai University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Caregiver)

Masking description

Participants in both groups receive what appears to be the same treatment procedure. The intervention group receives active ultrasound therapy, while the control group receives a sham (non-therapeutic) ultrasound, keeping both participants and care providers blinded.

Intervention model description

Two-arm, randomized, double-blind, controlled trial comparing propolis phonophoresis versus standard wound care.

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

Adults aged 18 to 75 years Diagnosed with type 1 or type 2 diabetes mellitus Presence of a diabetic foot ulcer classified as Grade 1 or 2 (Wagner classification) Ulcer size between 1 cm² and 5 cm² Able and willing to provide informed consent

Exclusion criteria

Severe infection or presence of osteomyelitis at the ulcer site Use of systemic immunosuppressants or corticosteroids Known allergy or hypersensitivity to propolis Pregnant or breastfeeding women Participation in another clinical trial within the past 30 days

Design outcomes

Primary

MeasureTime frameDescription
Percentage Reduction in Wound AreaBaseline to Week 4The primary outcome will be the percentage reduction in the surface area of the diabetic foot ulcer from baseline to the end of the 4-week treatment period. Wound size will be measured using digital planimetry based on standardized wound photographs.

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 5, 2026