Efficacy of Intralesional Injection of Pentoxifylline, Platelet-Rich Plasma, and Combined Pentoxifylline With Platelet-Rich Plasma in Patients With Atrophic Acne Scars

Not Applicable

Recruiting

• Conditions: Atrophic Acne Scar
• Interventions: Drug: Pentoxifylline; Drug: platelet rich plasma; Drug: combined pentoxifylline and platelet rich plasma

• Registration Number: NCT06319768
• Lead Sponsor: Sohag University

Brief Summary

Platelet-rich plasma (PRP) is an Acne vulgaris is a common chronic inflammatory skin disorder. It is the eighth most prevalent disease worldwide with a prevalence of 9.4%. Acne scar is one of the most persistent complications of acne, causes marked psychological stress to the patient . The process of acne scar formation can be broadly divided into two stages: increased tissue formation and loss or damage of tissue, corresponding to keloid or hypertrophic scar and atrophic scar, respectively.

The ultimate severity of acne scars is correlated with acne grade and the delay in treatment of active disease. The atrophic scars include three subtypes: icepick or V-shaped, rolling or M-shaped, and boxcar or U-shaped scars. Among atrophic scars, the ice pick type represents 60%-70%; the boxcar type represents 20%-30%; and the rolling type represents 15%-25% (Salameh and Shumaker, 2022). According to the qualitative scarring grading system, a macular acne scar type also exists, which clinically shows erythematous, hyperpigmented, or hypopigmented flat marks.

autologous blood product containing high concentrations of platelets in a small volume of plasma. PRP has been utilized in the treatment of orthopedic, musculoskeletal, and maxillofacial conditions for many years, it has only recently gained popularity in dermatology. PRP contains various growth factors, including platelet-derived growth factor (PDGF), transforming growth factor (TFG), vascular endothelial growth factor (VEGF), and insulin-like growth factor (IGF). These growth factors stimulate tissue remodeling and are associated with enhanced healing through the attraction of macrophages, upregulation of collagen synthesis, and promotion of tissue regeneration. Moreover, platelet-derived growth factor (PDGF) was shown to promote wound healing, angiogenesis, and tissue remodeling.

Detailed Description

Not available

Study Timeline

• Study Start: 2024-01-01
• Study First Submitted: 2024-02-25
• Status Verified: 2024-03
• Study First Submitted QC: 2024-03-12
• Last Update Submitted: 2024-03-12
• Study First Posted: 2024-03-20
• Last Update Posted: 2024-03-20
• Primary Completion: 2024-06-15
• Study Completion: 2024-06-15

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 75

Inclusion Criteria

• Aged > 18 years old.
• Both sexes.
• All types of atrophic acne scars

Exclusion Criteria

• • Pregnant or lactating women.

  • Coagulation disorders or anemia.
  • Skin infections.
  • Patients with hormonal disturbance.
  • Chronic disease e.g: diabetes, renal disease....etc.
  • Refusal to participate.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
- In group A (PTX group) (n:25):	Pentoxifylline	Patients will be treated with intralesional PTX (Trentoximal Ampoule 100 mg/5 ml) in a dose of 1mg per lesion at a distance 1cm between two atrophic lesions with a maximum 20 mg per session (with insulin syringe 30Gx8mm). Lesion blanching is the endpoint of injection.
- In group B(PRP group) (n:25):	platelet rich plasma	Patients will be treated with intralesional PRP. PRP will be obtained by the double-spin method, followed by the collection of 10 mL of autologous whole blood into tubes containing trisodium citrate as an anticoagulant. The collected blood will first be centrifuged at 1000 RPM for 10 minutes at room temperature to separate the red blood cells at the bottom of the tube, the buffy coat (containing the white blood cells) in the middle, and the plasma above (soft spin). Then, the upper plasma will be pipetted above the buffy coat to undergo another centrifugation at 1500 RPM for another10 minutes (hard spin) to obtain a platelet pellet in the bottom of the tube (with a platelet count 4-4.5 times higher than that of baseline) and a platelet-poor plasma(PPP) in the upper part. The PPP will be partly removed and partly used to re-suspend the platelets to finally produce 2 mL of PRP.
- In group C (combined PTX & PRP) (n:25):	combined pentoxifylline and platelet rich plasma	Patients will be treated with a combination of both intralesional 1mg of PTX per lesion (with a maximum 20mg per session) then 0.1ml of intralesional PRP at the same lesion after 5 minutes.

Primary Outcome Measures

Name	Time	Method
goodman and baron qualitative grading system of postacne scarring	6 months	* The physician's clinical assessment will be performed for all groups by grading the scars before the treatment at baseline, after each treatment session, and 3 months after the last session. Any changes in scar grading will be documented using the Goodman and Baron qualitative acne scarring grading system, with four grades: Grade 1 states the macular scars. Grades 2, 3, and 4 represent mild, moderate, and sever atrophic acne scars, respectively; * Group B (n: 25): Will receive intralesional injection of PRP.; * Group C (n: 25): Will receive combined intralesional injection of both PTX \& PRP.

Trial Locations

Locations (1)

Sohag university Hospital; 🇪🇬 Sohag, Egypt