Feizollah Niazi1,2,3, Seyed Hassan Hooshyar1,2,3, Keshvad Hedayatyanfard1,2,3, Seyed Ali Ziai1,2,3, Farideh Doroodgar1,2,3, Sana Niazi1,2,3, Behnam Habibi1,2,3, Ali Asadirad1,2,3. 1. Drs. Niazi, Hooshyar, Doroodgar, and Niazi are with the Department of Plastic and Reconstructive Surgery at Modarres Hospital School of Medicine at Shahid Beheshti University of Medical Sciences in Tehran, Iran. 2. Drs. Hedayatyanfard, Ziai, and Habibi are with the Department of Pharmacology at the School of Medicine, Shahid Beheshti University of Medical Sciences in Tehran, Iran. 3. Dr. Asadirad is with the Department of Immunology at the School of Medicine, Shahid Beheshti University of Medical Sciences in Tehran, Iran.
Abstract
Background: Keloid and hypertrophic scars (HTS) are formed by excessive collagen formation. Angiotensin II, through the AT1 receptor, plays an important role in extracellular matrix production. However, less is known about angiotensin II and AT1 receptor concentrations in HTS and keloid tissues. Objective: The purpose of this study was to determine the angiotensin II and AT1 receptor concentrations in keloid, HTS, and normal skin tissues. Methods: Skin biopsy samples from patients with HTS (n=26), keloid (n=20), and normal (n=30) skin tissues were evaluated for angiotensin II and AT1 receptor concentrations by use of the enzyme-linked immunosorbent assay technique. Results: The angiotensin II concentration in patients with HTS was higher than that in the normal (P<0.0067) and keloid (P>0.9553) groups, while the AT1 receptor concentration in patients with keloid was higher than that in the HTS (P<0.0001) and normal (P<0.0048) groups. Conclusion: Angiotensin II and AT1 receptor concentrations could stimulate the formation of HTS and keloid. Angiotensin II receptor blockers and angiotensin-converting enzyme inhibitors may be suitable compounds for the treatment of scar tissue.
Background: Keloid and hypertrophic scars (HTS) are formed by excessive collagen formation. Angiotensin II, through the AT1 receptor, plays an important role in extracellular matrix production. However, less is known about angiotensin II and AT1 receptor concentrations in HTS and keloid tissues. Objective: The purpose of this study was to determine the angiotensin II and AT1 receptor concentrations in keloid, HTS, and normal skin tissues. Methods: Skin biopsy samples from patients with HTS (n=26), keloid (n=20), and normal (n=30) skin tissues were evaluated for angiotensin II and AT1 receptor concentrations by use of the enzyme-linked immunosorbent assay technique. Results: The angiotensin II concentration in patients with HTS was higher than that in the normal (P<0.0067) and keloid (P>0.9553) groups, while the AT1 receptor concentration in patients with keloid was higher than that in the HTS (P<0.0001) and normal (P<0.0048) groups. Conclusion:Angiotensin II and AT1 receptor concentrations could stimulate the formation of HTS and keloid. Angiotensin II receptor blockers and angiotensin-converting enzyme inhibitors may be suitable compounds for the treatment of scar tissue.
Authors: C N Criss; Y Gao; G De Silva; J Yang; J M Anderson; Y W Novitsky; H Soltanian; M J Rosen Journal: Hernia Date: 2014-04-13 Impact factor: 4.739